Re: [LKP] [rcu] kernel BUG at include/linux/pagemap.h:149!
by Frederic Weisbecker
On Fri, Sep 11, 2015 at 10:19:47AM +0800, Boqun Feng wrote:
> Subject: [PATCH 01/27] rcu: Don't disable preemption for Tiny and Tree RCU
> readers
>
> Because preempt_disable() maps to barrier() for non-debug builds,
> it forces the compiler to spill and reload registers. Because Tree
> RCU and Tiny RCU now only appear in CONFIG_PREEMPT=n builds, these
> barrier() instances generate needless extra code for each instance of
> rcu_read_lock() and rcu_read_unlock(). This extra code slows down Tree
> RCU and bloats Tiny RCU.
>
> This commit therefore removes the preempt_disable() and preempt_enable()
> from the non-preemptible implementations of __rcu_read_lock() and
> __rcu_read_unlock(), respectively.
>
> For debug purposes, preempt_disable() and preempt_enable() are still
> kept if CONFIG_PREEMPT_COUNT=y, which makes the detection of sleeping
> inside atomic sections still work in non-preemptible kernels.
>
> Signed-off-by: Boqun Feng <boqun.feng(a)gmail.com>
> Signed-off-by: Paul E. McKenney <paulmck(a)linux.vnet.ibm.com>
> ---
> include/linux/rcupdate.h | 6 ++++--
> include/linux/rcutiny.h | 1 +
> kernel/rcu/tree.c | 9 +++++++++
> 3 files changed, 14 insertions(+), 2 deletions(-)
>
> diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
> index d63bb77..6c3cece 100644
> --- a/include/linux/rcupdate.h
> +++ b/include/linux/rcupdate.h
> @@ -297,12 +297,14 @@ void synchronize_rcu(void);
>
> static inline void __rcu_read_lock(void)
> {
> - preempt_disable();
> + if (IS_ENABLED(CONFIG_PREEMPT_COUNT))
> + preempt_disable();
preempt_disable() is a no-op when !CONFIG_PREEMPT_COUNT, right?
Or rather it's a barrier(), which is anyway implied by rcu_read_lock().
So perhaps we can get rid of the IS_ENABLED() check?
2 years, 4 months
- 4
- 4
Extending the 0-day system with syzkaller?
by David Drysdale
Hi Fengguang / LKP-folk,
Quick question -- how easy is it to add extra builds/tests/checks to
your marvellous 0-day kbuild system?
The reason I ask is that I've recently been exploring syzkaller [1],
which is a system call fuzzer written by some of my colleagues here at
Google (cc'ed). Although it's fairly new, it has uncovered a bunch of
kernel bugs already [2] so I wondered if it might be a good candidate
for inclusion in the 0-day checks at some point.
(As an aside, I'm in the process of writing an article about syzkaller
for LWN, which might also expose it to more folk.)
What do you think?
Thanks,
David
[1] https://github.com/google/syzkaller
[2] https://github.com/google/syzkaller/wiki/Found-Bugs
5 years, 4 months
- 7
- 14
[lkp] [dcache_{readdir, dir_lseek}() users] 4e82901cd6: reaim.jobs_per_min -49.1% regression
by kernel test robot
FYI, we noticed reaim.jobs_per_min -49.1% regression due to commit:
commit 4e82901cd6d1af21ae232ae835c36d8230c809e8 ("dcache_{readdir,dir_lseek}() users: switch to ->iterate_shared")
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
in testcase: reaim
on test machine: lkp-hsx04: 144 threads Brickland Haswell-EX with 512G memory
with following parameters: cpufreq_governor=performance/iterations=4/nr_task=1600%/test=fserver
Details are as below:
-------------------------------------------------------------------------------------------------->
=========================================================================================
compiler/cpufreq_governor/iterations/kconfig/nr_task/rootfs/tbox_group/test/testcase:
gcc-4.9/performance/4/x86_64-rhel/1600%/debian-x86_64-2015-02-07.cgz/lkp-hsx04/fserver/reaim
commit:
3125d2650cae97d8f313ab696cd0ed66916e767a
4e82901cd6d1af21ae232ae835c36d8230c809e8
3125d2650cae97d8 4e82901cd6d1af21ae232ae835
---------------- --------------------------
%stddev %change %stddev
\ | \
189504 ± 5% -49.1% 96506 ± 1% reaim.jobs_per_min
82.25 ± 5% -49.1% 41.89 ± 1% reaim.jobs_per_min_child
486.97 ± 6% +2540.6% 12859 ± 1% reaim.child_systime
377.56 ± 0% +14.0% 430.41 ± 0% reaim.child_utime
66.25 ± 0% +32.4% 87.69 ± 1% reaim.jti
191210 ± 5% -48.4% 98588 ± 2% reaim.max_jobs_per_min
73.90 ± 5% +95.9% 144.75 ± 1% reaim.parent_time
33.26 ± 1% -64.8% 11.71 ± 10% reaim.std_dev_percent
18.74 ± 4% -17.6% 15.44 ± 10% reaim.std_dev_time
304.45 ± 5% +93.1% 587.85 ± 1% reaim.time.elapsed_time
304.45 ± 5% +93.1% 587.85 ± 1% reaim.time.elapsed_time.max
1049052 ± 0% +44.3% 1513524 ± 1% reaim.time.involuntary_context_switches
1.766e+08 ± 0% +1.1% 1.784e+08 ± 0% reaim.time.minor_page_faults
1137 ± 1% +695.0% 9043 ± 1% reaim.time.percent_of_cpu_this_job_got
1950 ± 6% +2537.6% 51439 ± 1% reaim.time.system_time
1510 ± 0% +14.0% 1721 ± 0% reaim.time.user_time
7816334 ± 2% -26.5% 5744712 ± 3% reaim.time.voluntary_context_switches
358.57 ± 4% +78.9% 641.41 ± 1% uptime.boot
47094 ± 4% -55.0% 21202 ± 5% uptime.idle
632750 ± 7% +583.2% 4323189 ± 6% softirqs.RCU
573650 ± 0% +79.8% 1031264 ± 0% softirqs.SCHED
3249858 ± 1% +813.2% 29677185 ± 1% softirqs.TIMER
941405 ± 0% +33.9% 1260181 ± 1% vmstat.memory.cache
1.50 ± 33% +25466.7% 383.50 ± 12% vmstat.procs.b
11.75 ± 9% +1551.1% 194.00 ± 3% vmstat.procs.r
66096 ± 6% -59.7% 26611 ± 2% vmstat.system.cs
13790 ± 2% +679.2% 107457 ± 2% vmstat.system.in
304.45 ± 5% +93.1% 587.85 ± 1% time.elapsed_time
304.45 ± 5% +93.1% 587.85 ± 1% time.elapsed_time.max
1049052 ± 0% +44.3% 1513524 ± 1% time.involuntary_context_switches
1137 ± 1% +695.0% 9043 ± 1% time.percent_of_cpu_this_job_got
1950 ± 6% +2537.6% 51439 ± 1% time.system_time
1510 ± 0% +14.0% 1721 ± 0% time.user_time
7816334 ± 2% -26.5% 5744712 ± 3% time.voluntary_context_switches
5.521e+08 ± 2% +128.2% 1.26e+09 ± 9% cpuidle.C1-HSW.time
1119526 ± 12% +39.4% 1560698 ± 8% cpuidle.C1-HSW.usage
1.473e+09 ± 3% -26.0% 1.09e+09 ± 13% cpuidle.C1E-HSW.time
3341952 ± 0% -81.1% 631688 ± 8% cpuidle.C1E-HSW.usage
3.215e+08 ± 9% +626.5% 2.336e+09 ± 9% cpuidle.C3-HSW.time
400710 ± 3% +123.0% 893484 ± 5% cpuidle.C3-HSW.usage
3.797e+10 ± 5% -38.3% 2.342e+10 ± 3% cpuidle.C6-HSW.time
4992473 ± 0% -38.2% 3086799 ± 4% cpuidle.C6-HSW.usage
86345226 ± 17% +246.7% 2.993e+08 ± 9% cpuidle.POLL.time
680.00 ± 6% +441.2% 3680 ± 11% cpuidle.POLL.usage
8.28 ± 1% +707.7% 66.86 ± 1% turbostat.%Busy
241.50 ± 1% +700.9% 1934 ± 1% turbostat.Avg_MHz
19.38 ± 2% +25.8% 24.39 ± 1% turbostat.CPU%c1
0.90 ± 8% +86.7% 1.68 ± 7% turbostat.CPU%c3
71.44 ± 0% -90.1% 7.07 ± 4% turbostat.CPU%c6
40.50 ± 2% +30.2% 52.75 ± 3% turbostat.CoreTmp
6.20 ± 3% -87.9% 0.75 ± 13% turbostat.Pkg%pc2
44.75 ± 1% +25.7% 56.25 ± 1% turbostat.PkgTmp
264.66 ± 0% +83.6% 485.92 ± 0% turbostat.PkgWatt
235.00 ± 0% +2.3% 240.47 ± 0% turbostat.RAMWatt
679219 ± 0% +30.0% 883283 ± 1% meminfo.Active
576849 ± 0% +35.3% 780525 ± 2% meminfo.Active(anon)
562337 ± 0% +17.2% 659238 ± 1% meminfo.AnonPages
510249 ± 0% +19.7% 610864 ± 1% meminfo.Cached
2279043 ± 0% +22.0% 2780860 ± 3% meminfo.Committed_AS
10600 ± 0% +16.4% 12336 ± 3% meminfo.Inactive(anon)
57088 ± 0% +256.1% 203274 ± 5% meminfo.KernelStack
18972 ± 0% +9.3% 20734 ± 4% meminfo.Mapped
109131 ± 5% +30.5% 142400 ± 3% meminfo.PageTables
84481 ± 0% +25.7% 106227 ± 1% meminfo.SReclaimable
346606 ± 0% +57.4% 545507 ± 3% meminfo.SUnreclaim
25419 ± 1% +395.4% 125929 ± 9% meminfo.Shmem
431088 ± 0% +51.2% 651735 ± 2% meminfo.Slab
25.10 ± 4% -88.1% 2.98 ± 13% perf-profile.cycles-pp.call_cpuidle
26.12 ± 4% -88.4% 3.02 ± 13% perf-profile.cycles-pp.cpu_startup_entry
25.10 ± 4% -88.1% 2.98 ± 13% perf-profile.cycles-pp.cpuidle_enter
23.90 ± 4% -87.7% 2.95 ± 13% perf-profile.cycles-pp.cpuidle_enter_state
23.59 ± 3% -87.8% 2.87 ± 13% perf-profile.cycles-pp.intel_idle
1.10 ± 2% -100.0% 0.00 ± -1% perf-profile.cycles-pp.reschedule_interrupt
1.38 ± 6% -87.1% 0.18 ± 49% perf-profile.cycles-pp.rest_init
1.10 ± 2% -100.0% 0.00 ± -1% perf-profile.cycles-pp.scheduler_ipi
1.10 ± 2% -100.0% 0.00 ± -1% perf-profile.cycles-pp.smp_reschedule_interrupt
1.38 ± 6% -87.1% 0.18 ± 49% perf-profile.cycles-pp.start_kernel
24.80 ± 4% -88.5% 2.84 ± 11% perf-profile.cycles-pp.start_secondary
1.38 ± 6% -87.1% 0.18 ± 49% perf-profile.cycles-pp.x86_64_start_kernel
1.38 ± 6% -87.1% 0.18 ± 49% perf-profile.cycles-pp.x86_64_start_reservations
144401 ± 0% +35.4% 195475 ± 1% proc-vmstat.nr_active_anon
140772 ± 0% +17.3% 165063 ± 1% proc-vmstat.nr_anon_pages
127559 ± 0% +19.8% 152794 ± 1% proc-vmstat.nr_file_pages
2649 ± 0% +16.2% 3079 ± 3% proc-vmstat.nr_inactive_anon
0.00 ± 0% +Inf% 427.25 ± 5% proc-vmstat.nr_isolated_anon
3574 ± 0% +254.6% 12675 ± 4% proc-vmstat.nr_kernel_stack
27385 ± 6% +30.0% 35613 ± 3% proc-vmstat.nr_page_table_pages
6352 ± 1% +396.9% 31560 ± 9% proc-vmstat.nr_shmem
21119 ± 0% +25.8% 26563 ± 1% proc-vmstat.nr_slab_reclaimable
86645 ± 0% +57.2% 136181 ± 3% proc-vmstat.nr_slab_unreclaimable
18704 ± 91% +6342.3% 1204981 ± 1% proc-vmstat.numa_hint_faults
7213 ±107% +7548.2% 551723 ± 2% proc-vmstat.numa_hint_faults_local
41554 ± 1% +13.0% 46949 ± 3% proc-vmstat.numa_other
34.75 ± 25% +9.5e+05% 330841 ± 4% proc-vmstat.numa_pages_migrated
75.00 ± 0% +2.4e+06% 1806450 ± 1% proc-vmstat.numa_pte_updates
6980 ± 3% +286.5% 26983 ± 14% proc-vmstat.pgactivate
9.75 ± 46% +29151.3% 2852 ± 6% proc-vmstat.pgmigrate_fail
34.75 ± 25% +9.5e+05% 330841 ± 4% proc-vmstat.pgmigrate_success
30962 ± 2% +49.7% 46340 ± 22% numa-vmstat.node0.nr_file_pages
1336 ± 26% +176.5% 3696 ± 17% numa-vmstat.node0.nr_kernel_stack
655.25 ±138% +2346.8% 16032 ± 64% numa-vmstat.node0.nr_shmem
4444 ± 4% +60.6% 7138 ± 4% numa-vmstat.node0.nr_slab_reclaimable
24105 ± 13% +52.7% 36818 ± 14% numa-vmstat.node0.nr_slab_unreclaimable
37828 ± 8% +20.4% 45545 ± 10% numa-vmstat.node1.nr_active_anon
0.00 ± 0% +Inf% 104.75 ± 4% numa-vmstat.node1.nr_isolated_anon
777.00 ± 1% +263.0% 2820 ± 7% numa-vmstat.node1.nr_kernel_stack
21035 ± 3% +49.4% 31432 ± 3% numa-vmstat.node1.nr_slab_unreclaimable
19261584 ± 3% -8.3% 17664368 ± 6% numa-vmstat.node1.numa_local
6445 ± 5% -6.9% 6000 ± 2% numa-vmstat.node2.nr_active_file
731.75 ± 54% +274.9% 2743 ± 11% numa-vmstat.node2.nr_kernel_stack
5668 ± 9% +21.7% 6898 ± 6% numa-vmstat.node2.nr_slab_reclaimable
20284 ± 17% +52.0% 30833 ± 11% numa-vmstat.node2.nr_slab_unreclaimable
32582 ± 11% +30.8% 42629 ± 7% numa-vmstat.node3.nr_active_anon
32573 ± 11% +28.2% 41746 ± 7% numa-vmstat.node3.nr_anon_pages
0.00 ± 0% +Inf% 107.25 ± 10% numa-vmstat.node3.nr_isolated_anon
722.75 ± 31% +373.0% 3418 ± 18% numa-vmstat.node3.nr_kernel_stack
802.50 ± 3% +56.5% 1255 ± 51% numa-vmstat.node3.nr_mapped
269.25 ± 31% +265.0% 982.75 ± 84% numa-vmstat.node3.nr_shmem
4816 ± 17% +34.6% 6484 ± 8% numa-vmstat.node3.nr_slab_reclaimable
21220 ± 11% +75.8% 37314 ± 12% numa-vmstat.node3.nr_slab_unreclaimable
123852 ± 2% +49.7% 185420 ± 22% numa-meminfo.node0.FilePages
21489 ± 26% +174.9% 59065 ± 17% numa-meminfo.node0.KernelStack
861898 ± 3% +30.0% 1120062 ± 9% numa-meminfo.node0.MemUsed
17776 ± 4% +60.6% 28540 ± 4% numa-meminfo.node0.SReclaimable
96387 ± 13% +52.6% 147124 ± 14% numa-meminfo.node0.SUnreclaim
2622 ±138% +2347.4% 64189 ± 64% numa-meminfo.node0.Shmem
114164 ± 11% +53.9% 175665 ± 12% numa-meminfo.node0.Slab
175655 ± 6% +19.3% 209563 ± 9% numa-meminfo.node1.Active
151199 ± 8% +20.9% 182816 ± 10% numa-meminfo.node1.Active(anon)
12414 ± 2% +263.7% 45153 ± 6% numa-meminfo.node1.KernelStack
84163 ± 3% +49.4% 125761 ± 3% numa-meminfo.node1.SUnreclaim
108941 ± 6% +37.7% 149995 ± 3% numa-meminfo.node1.Slab
25784 ± 5% -6.9% 24004 ± 2% numa-meminfo.node2.Active(file)
11770 ± 54% +272.3% 43819 ± 10% numa-meminfo.node2.KernelStack
22674 ± 9% +21.7% 27592 ± 6% numa-meminfo.node2.SReclaimable
81132 ± 17% +51.8% 123123 ± 11% numa-meminfo.node2.SUnreclaim
103806 ± 14% +45.2% 150716 ± 9% numa-meminfo.node2.Slab
155823 ± 9% +26.8% 197624 ± 6% numa-meminfo.node3.Active
130231 ± 11% +31.2% 170866 ± 7% numa-meminfo.node3.Active(anon)
130132 ± 11% +28.6% 167346 ± 7% numa-meminfo.node3.AnonPages
11486 ± 32% +376.1% 54692 ± 18% numa-meminfo.node3.KernelStack
3220 ± 3% +56.7% 5046 ± 51% numa-meminfo.node3.Mapped
731454 ± 4% +23.8% 905502 ± 8% numa-meminfo.node3.MemUsed
19265 ± 17% +34.6% 25932 ± 8% numa-meminfo.node3.SReclaimable
84857 ± 11% +75.8% 149168 ± 11% numa-meminfo.node3.SUnreclaim
1072 ± 31% +267.3% 3939 ± 84% numa-meminfo.node3.Shmem
104123 ± 11% +68.2% 175101 ± 10% numa-meminfo.node3.Slab
2655 ± 0% +12.3% 2980 ± 1% slabinfo.anon_vma_chain.active_slabs
169938 ± 0% +12.3% 190786 ± 1% slabinfo.anon_vma_chain.num_objs
2655 ± 0% +12.3% 2980 ± 1% slabinfo.anon_vma_chain.num_slabs
57371 ± 2% +51.4% 86867 ± 2% slabinfo.cred_jar.active_objs
1375 ± 2% +59.0% 2187 ± 3% slabinfo.cred_jar.active_slabs
57785 ± 2% +59.0% 91883 ± 3% slabinfo.cred_jar.num_objs
1375 ± 2% +59.0% 2187 ± 3% slabinfo.cred_jar.num_slabs
105760 ± 0% +70.2% 180007 ± 2% slabinfo.dentry.active_objs
2611 ± 0% +65.9% 4334 ± 2% slabinfo.dentry.active_slabs
109710 ± 0% +65.9% 182048 ± 2% slabinfo.dentry.num_objs
2611 ± 0% +65.9% 4334 ± 2% slabinfo.dentry.num_slabs
12542 ± 0% +19.8% 15025 ± 2% slabinfo.files_cache.active_objs
12542 ± 0% +19.8% 15025 ± 2% slabinfo.files_cache.num_objs
12325 ± 0% +13.1% 13944 ± 3% slabinfo.kmalloc-128.active_objs
12368 ± 0% +12.8% 13949 ± 3% slabinfo.kmalloc-128.num_objs
48607 ± 1% +599.8% 340166 ± 7% slabinfo.kmalloc-256.active_objs
1406 ± 0% +296.1% 5569 ± 7% slabinfo.kmalloc-256.active_slabs
90025 ± 0% +295.9% 356448 ± 7% slabinfo.kmalloc-256.num_objs
1406 ± 0% +296.1% 5569 ± 7% slabinfo.kmalloc-256.num_slabs
19374 ± 4% +32.1% 25598 ± 11% slabinfo.kmalloc-512.active_objs
303.50 ± 4% +31.9% 400.25 ± 11% slabinfo.kmalloc-512.active_slabs
19466 ± 4% +31.7% 25645 ± 11% slabinfo.kmalloc-512.num_objs
303.50 ± 4% +31.9% 400.25 ± 11% slabinfo.kmalloc-512.num_slabs
54555 ± 0% +11.0% 60529 ± 1% slabinfo.kmalloc-64.active_objs
852.00 ± 0% +10.9% 945.25 ± 1% slabinfo.kmalloc-64.active_slabs
54569 ± 0% +10.9% 60543 ± 1% slabinfo.kmalloc-64.num_objs
852.00 ± 0% +10.9% 945.25 ± 1% slabinfo.kmalloc-64.num_slabs
8353 ± 2% +16.1% 9697 ± 1% slabinfo.mm_struct.active_objs
8767 ± 2% +12.5% 9867 ± 0% slabinfo.mm_struct.num_objs
18102 ± 1% +321.6% 76312 ± 2% slabinfo.pid.active_objs
282.25 ± 1% +324.1% 1197 ± 2% slabinfo.pid.active_slabs
18102 ± 1% +323.3% 76624 ± 2% slabinfo.pid.num_objs
282.25 ± 1% +324.1% 1197 ± 2% slabinfo.pid.num_slabs
15888 ± 0% +88.2% 29907 ± 5% slabinfo.radix_tree_node.active_objs
283.00 ± 0% +88.5% 533.50 ± 5% slabinfo.radix_tree_node.active_slabs
15888 ± 0% +88.3% 29912 ± 5% slabinfo.radix_tree_node.num_objs
283.00 ± 0% +88.5% 533.50 ± 5% slabinfo.radix_tree_node.num_slabs
37875 ± 1% +18.7% 44946 ± 2% slabinfo.shmem_inode_cache.active_objs
782.75 ± 1% +19.0% 931.25 ± 2% slabinfo.shmem_inode_cache.active_slabs
38374 ± 1% +19.0% 45658 ± 2% slabinfo.shmem_inode_cache.num_objs
782.75 ± 1% +19.0% 931.25 ± 2% slabinfo.shmem_inode_cache.num_slabs
9093 ± 2% +19.5% 10863 ± 0% slabinfo.sighand_cache.active_objs
9517 ± 1% +15.7% 11011 ± 0% slabinfo.sighand_cache.num_objs
15657 ± 4% +22.7% 19216 ± 2% slabinfo.signal_cache.active_objs
532.75 ± 3% +24.5% 663.25 ± 2% slabinfo.signal_cache.active_slabs
15994 ± 3% +24.4% 19903 ± 2% slabinfo.signal_cache.num_objs
532.75 ± 3% +24.5% 663.25 ± 2% slabinfo.signal_cache.num_slabs
4059 ± 0% +220.4% 13004 ± 4% slabinfo.task_struct.active_objs
1416 ± 0% +210.5% 4397 ± 4% slabinfo.task_struct.active_slabs
4249 ± 0% +210.5% 13193 ± 4% slabinfo.task_struct.num_objs
1416 ± 0% +210.5% 4397 ± 4% slabinfo.task_struct.num_slabs
9689 ± 1% -14.4% 8298 ± 0% slabinfo.tw_sock_TCP.active_objs
9689 ± 1% -14.4% 8298 ± 0% slabinfo.tw_sock_TCP.num_objs
118717 ± 0% +8.7% 129087 ± 2% slabinfo.vm_area_struct.active_objs
2834 ± 0% +11.0% 3147 ± 1% slabinfo.vm_area_struct.active_slabs
124715 ± 0% +11.0% 138490 ± 1% slabinfo.vm_area_struct.num_objs
2834 ± 0% +11.0% 3147 ± 1% slabinfo.vm_area_struct.num_slabs
826.91 ±172% +6.4e+05% 5282284 ± 23% sched_debug.cfs_rq:/.MIN_vruntime.avg
119075 ±172% +29123.4% 34797824 ± 5% sched_debug.cfs_rq:/.MIN_vruntime.max
9888 ±172% +1.1e+05% 10423763 ± 12% sched_debug.cfs_rq:/.MIN_vruntime.stddev
3.46 ± 9% +6452.2% 226.68 ± 4% sched_debug.cfs_rq:/.load.avg
76.63 ± 15% +13122.9% 10133 ± 58% sched_debug.cfs_rq:/.load.max
13.44 ± 12% +7589.8% 1033 ± 43% sched_debug.cfs_rq:/.load.stddev
10.02 ± 19% +2131.5% 223.68 ± 4% sched_debug.cfs_rq:/.load_avg.avg
192.42 ± 15% +4769.4% 9369 ± 59% sched_debug.cfs_rq:/.load_avg.max
31.87 ± 17% +2895.1% 954.48 ± 42% sched_debug.cfs_rq:/.load_avg.stddev
826.91 ±172% +6.4e+05% 5282285 ± 23% sched_debug.cfs_rq:/.max_vruntime.avg
119075 ±172% +29123.4% 34797824 ± 5% sched_debug.cfs_rq:/.max_vruntime.max
9888 ±172% +1.1e+05% 10423763 ± 12% sched_debug.cfs_rq:/.max_vruntime.stddev
867397 ± 4% +3259.7% 29141996 ± 5% sched_debug.cfs_rq:/.min_vruntime.avg
1522256 ± 3% +2296.5% 36481296 ± 5% sched_debug.cfs_rq:/.min_vruntime.max
317110 ± 9% +6979.6% 22450187 ± 3% sched_debug.cfs_rq:/.min_vruntime.min
466641 ± 2% +598.1% 3257731 ± 10% sched_debug.cfs_rq:/.min_vruntime.stddev
0.07 ± 12% +926.9% 0.72 ± 4% sched_debug.cfs_rq:/.nr_running.avg
1.00 ± 0% +120.5% 2.20 ± 16% sched_debug.cfs_rq:/.nr_running.max
0.24 ± 5% +148.7% 0.60 ± 8% sched_debug.cfs_rq:/.nr_running.stddev
1.57 ± 4% +12191.7% 193.17 ± 11% sched_debug.cfs_rq:/.runnable_load_avg.avg
44.80 ± 18% +17097.4% 7704 ± 50% sched_debug.cfs_rq:/.runnable_load_avg.max
6.83 ± 10% +11845.7% 816.26 ± 34% sched_debug.cfs_rq:/.runnable_load_avg.stddev
-561803 ±-17% +909.6% -5671743 ±-17% sched_debug.cfs_rq:/.spread0.avg
93073 ± 48% +1693.9% 1669627 ± 33% sched_debug.cfs_rq:/.spread0.max
-1112123 ± -9% +1011.8% -12365037 ±-14% sched_debug.cfs_rq:/.spread0.min
466665 ± 2% +598.4% 3259347 ± 10% sched_debug.cfs_rq:/.spread0.stddev
72.03 ± 8% +681.0% 562.57 ± 4% sched_debug.cfs_rq:/.util_avg.avg
845.49 ± 7% +19.8% 1012 ± 1% sched_debug.cfs_rq:/.util_avg.max
162.56 ± 7% +141.2% 392.17 ± 2% sched_debug.cfs_rq:/.util_avg.stddev
1041175 ± 4% +74.3% 1814551 ± 41% sched_debug.cpu.avg_idle.max
190602 ± 7% +74.9% 333448 ± 4% sched_debug.cpu.clock.avg
190622 ± 7% +74.9% 333489 ± 4% sched_debug.cpu.clock.max
190578 ± 7% +74.9% 333385 ± 4% sched_debug.cpu.clock.min
12.27 ± 11% +123.7% 27.45 ± 17% sched_debug.cpu.clock.stddev
190602 ± 7% +74.9% 333448 ± 4% sched_debug.cpu.clock_task.avg
190622 ± 7% +74.9% 333489 ± 4% sched_debug.cpu.clock_task.max
190578 ± 7% +74.9% 333385 ± 4% sched_debug.cpu.clock_task.min
12.27 ± 11% +123.7% 27.45 ± 17% sched_debug.cpu.clock_task.stddev
2.48 ± 30% +7940.8% 199.54 ± 8% sched_debug.cpu.cpu_load[0].avg
151.10 ± 73% +5500.9% 8462 ± 53% sched_debug.cpu.cpu_load[0].max
16.01 ± 55% +5396.2% 879.71 ± 37% sched_debug.cpu.cpu_load[0].stddev
2.30 ± 25% +8559.3% 198.83 ± 8% sched_debug.cpu.cpu_load[1].avg
103.62 ± 61% +7965.2% 8357 ± 53% sched_debug.cpu.cpu_load[1].max
12.13 ± 42% +7072.1% 869.95 ± 37% sched_debug.cpu.cpu_load[1].stddev
2.17 ± 20% +8999.8% 197.88 ± 9% sched_debug.cpu.cpu_load[2].avg
79.29 ± 49% +10256.5% 8211 ± 52% sched_debug.cpu.cpu_load[2].max
10.29 ± 32% +8233.9% 857.48 ± 36% sched_debug.cpu.cpu_load[2].stddev
2.09 ± 16% +9348.3% 197.64 ± 9% sched_debug.cpu.cpu_load[3].avg
69.15 ± 34% +11736.4% 8184 ± 52% sched_debug.cpu.cpu_load[3].max
9.19 ± 22% +9151.1% 850.06 ± 36% sched_debug.cpu.cpu_load[3].stddev
2.05 ± 14% +9635.5% 199.62 ± 8% sched_debug.cpu.cpu_load[4].avg
57.27 ± 25% +14613.6% 8427 ± 54% sched_debug.cpu.cpu_load[4].max
8.27 ± 17% +10402.4% 868.48 ± 38% sched_debug.cpu.cpu_load[4].stddev
3419 ± 20% +1048.9% 39291 ± 7% sched_debug.cpu.curr->pid.avg
13248 ± 10% +120.8% 29253 ± 3% sched_debug.cpu.curr->pid.stddev
4.14 ± 23% +5375.2% 226.50 ± 4% sched_debug.cpu.load.avg
166.82 ± 60% +5974.4% 10133 ± 58% sched_debug.cpu.load.max
20.66 ± 42% +4903.2% 1033 ± 43% sched_debug.cpu.load.stddev
519931 ± 4% +88.8% 981576 ± 44% sched_debug.cpu.max_idle_balance_cost.max
1655 ±112% +3127.4% 53420 ± 62% sched_debug.cpu.max_idle_balance_cost.stddev
0.00 ± 6% +257.7% 0.00 ± 14% sched_debug.cpu.next_balance.stddev
57551 ± 8% +292.1% 225655 ± 4% sched_debug.cpu.nr_load_updates.avg
74049 ± 6% +245.3% 255674 ± 4% sched_debug.cpu.nr_load_updates.max
42700 ± 6% +360.8% 196777 ± 2% sched_debug.cpu.nr_load_updates.min
10498 ± 5% +45.5% 15274 ± 7% sched_debug.cpu.nr_load_updates.stddev
0.07 ± 16% +1759.2% 1.37 ± 27% sched_debug.cpu.nr_running.avg
1.28 ± 25% +927.9% 13.19 ± 25% sched_debug.cpu.nr_running.max
0.26 ± 10% +629.1% 1.88 ± 24% sched_debug.cpu.nr_running.stddev
61209 ± 4% -22.7% 47333 ± 4% sched_debug.cpu.nr_switches.avg
33110 ± 3% -55.3% 14805 ± 6% sched_debug.cpu.nr_switches.stddev
9.09 ± 6% +36.1% 12.36 ± 4% sched_debug.cpu.nr_uninterruptible.avg
534.05 ± 7% +189.9% 1548 ± 8% sched_debug.cpu.nr_uninterruptible.max
-503.79 ± -4% +246.5% -1745 ± -5% sched_debug.cpu.nr_uninterruptible.min
392.51 ± 9% +124.5% 881.29 ± 4% sched_debug.cpu.nr_uninterruptible.stddev
190581 ± 7% +74.9% 333386 ± 4% sched_debug.cpu_clk
188297 ± 7% +75.8% 331102 ± 4% sched_debug.ktime
0.12 ± 7% -34.3% 0.08 ± 7% sched_debug.rt_rq:/.rt_time.avg
9.29 ± 7% -45.7% 5.04 ± 21% sched_debug.rt_rq:/.rt_time.max
0.93 ± 7% -41.8% 0.54 ± 16% sched_debug.rt_rq:/.rt_time.stddev
190581 ± 7% +74.9% 333386 ± 4% sched_debug.sched_clk
reaim.child_systime
14000 ++------------------------------------------------------------------+
| O O O OO O O
12000 ++ |
| O |
10000 O+O O O O O |
| OO O O OO O O OO O O O OO O O O OO O O O |
8000 ++ |
| |
6000 ++ |
| |
4000 ++ |
| |
2000 ++ |
*.*.**.*.*.*.**.*.*.**.*.*.*.**.*.*.*.**.*.*.*.**.*.*.**. .*. .* |
0 ++-----------------------O-------------------------------*-O-*--*---+
reaim.child_utime
1000 O+--OO---O-O---------------------------------------------------------+
900 ++O O |
| |
800 ++ |
700 ++ |
| |
600 ++ |
500 ++ |
400 ++ O OO O O O O O O O O OO O O O OO O O O OO O O O OO O O
*.*.**.*.*.*.*.**.*.*.*.**.*.*.*.*.**.*.*.*.**.*.*.*.**.*.*.*.*.** |
300 ++ |
200 ++ |
| |
100 ++ |
0 ++-----------------------O----------------------------------O--------+
reaim.std_dev_percent
40 ++*---*--*---*-*---*--*-*-*---*---*----*---*---------------------------+
* * * * * * * * ** * *. .*.*. |
35 ++ *.**.* *.*.*.**.* |
30 ++ |
| |
25 ++ |
| |
20 ++ |
| |
15 ++ O |
10 ++ O O O O O O O OO O O
O O OO O O O O O O O O O O O O O O OO O O O O |
5 ++O |
| |
0 ++------------------------O-----------------------------------O--------+
reaim.jti
100 ++--------------------------------------------------------------------+
90 O+O O OO O O OO O O OO O O O O O O O O OO O O |
| O O O O O O O O OO O O
80 ++ |
70 ++ |
*.*.*. *.*.*. .* .*. .*.**.*. .*.*.*.* .*.*.*.*.**.*.*.*.*.**.* |
60 ++ * *.* * *.* * * |
50 ++ |
40 ++ |
| |
30 ++ |
20 ++ |
| |
10 ++ |
0 ++------------------------O----------------------------------O--------+
reaim.time.user_time
4000 O+--OO---O-O---------------------------------------------------------+
| O O |
3500 ++ |
3000 ++ |
| |
2500 ++ |
| |
2000 ++ |
| O OO O O O O O O O O OO O O O OO O O O OO O O O OO O O
1500 *+*.**.*.*.*.*.**.*.*.*.**.*.*.*.*.**.*.*.*.**.*.*.*.**.*.*.*.*.** |
1000 ++ |
| |
500 ++ |
| |
0 ++-----------------------O----------------------------------O--------+
reaim.time.system_time
60000 ++------------------------------------------------------------------+
| |
50000 ++ O O O OO O O
| |
O O O |
40000 ++O O O O O O O O O O |
| O O O O O OO O O O O O O O O O O |
30000 ++ |
| |
20000 ++ |
| |
| |
10000 ++ |
*.*.**.*.*.*.**.*.*.**.*.*.*.**.*.*.*.**.*.*.*.**.*.*.* |
0 ++-----------------------O-----------------------------*-*-O-*-**---+
reaim.time.percent_of_cpu_this_job_got
10000 ++--O----O-O--------------------------------------------------------+
9000 O+O O O O O O O O O
| O |
8000 ++ O O O |
7000 ++ O O O OO O O OO O O OO O O OO O O O |
| |
6000 ++ |
5000 ++ |
4000 ++ |
| |
3000 ++ |
2000 ++ |
*.*.**.*.*.*.**.*.*.**.*.*.*.**.*.*.*.**.*.*. .*.**.*.*.*.** |
1000 ++ *.**.* |
0 ++-----------------------O---------------------------------O--------+
reaim.time.involuntary_context_switches
1.6e+06 ++----------------------------------------------------------------+
| O O O O OO O
1.4e+06 O+OO O O O OO O O O OO O O O O OO O O OO O |
| OO O O O O |
1.2e+06 ++ .*. .**.*.*. *. .*.**. *. .*. *.*.*.* |
1e+06 *+** * * * *.*.* *.**.* * *.*.*.**.*.*.* |
| |
800000 ++ |
| |
600000 ++ |
400000 ++ |
| |
200000 ++ |
| |
0 ++----------------------O--------------------------------O--------+
[*] bisect-good sample
[O] bisect-bad sample
To reproduce:
git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
Thanks,
Xiaolong
5 years, 4 months
- 3
- 4
[lkp] [sched/fair] 53d3bc773e: hackbench.throughput -32.9% regression
by kernel test robot
FYI, we noticed hackbench.throughput -32.9% regression due to commit:
commit 53d3bc773eaa7ab1cf63585e76af7ee869d5e709 ("Revert "sched/fair: Fix fairness issue on migration"")
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
in testcase: hackbench
on test machine: ivb42: 48 threads Ivytown Ivy Bridge-EP with 64G memory
with following parameters: cpufreq_governor=performance/ipc=socket/mode=threads/nr_threads=50%
In addition to that, the commit also has significant impact on the following tests:
unixbench: unixbench.score 25.9% improvement on test machine - ivb42: 48 threads Ivytown Ivy Bridge-EP with 64G memory
with test parameters: cpufreq_governor=performance/nr_task=100%/test=context1
hackbench: hackbench.throughput -15.6% regression on test machine - lkp-hsw-ep4: 72 threads Haswell-EP with 128G memory
with test parameters: cpufreq_governor=performance/ipc=pipe/iterations=12/mode=process/nr_threads=50%
Details are as below:
-------------------------------------------------------------------------------------------------->
=========================================================================================
compiler/cpufreq_governor/ipc/kconfig/mode/nr_threads/rootfs/tbox_group/testcase:
gcc-4.9/performance/socket/x86_64-rhel/threads/50%/debian-x86_64-2015-02-07.cgz/ivb42/hackbench
commit:
c5114626f33b62fa7595e57d87f33d9d1f8298a2
53d3bc773eaa7ab1cf63585e76af7ee869d5e709
c5114626f33b62fa 53d3bc773eaa7ab1cf63585e76
---------------- --------------------------
%stddev %change %stddev
\ | \
196590 ± 0% -32.9% 131963 ± 2% hackbench.throughput
602.66 ± 0% +2.8% 619.27 ± 2% hackbench.time.elapsed_time
602.66 ± 0% +2.8% 619.27 ± 2% hackbench.time.elapsed_time.max
1.76e+08 ± 3% +236.0% 5.914e+08 ± 2% hackbench.time.involuntary_context_switches
208664 ± 2% +26.0% 262929 ± 3% hackbench.time.minor_page_faults
4401 ± 0% +5.7% 4650 ± 0% hackbench.time.percent_of_cpu_this_job_got
25256 ± 0% +10.2% 27842 ± 2% hackbench.time.system_time
1272 ± 0% -24.5% 961.37 ± 2% hackbench.time.user_time
7.64e+08 ± 1% +131.8% 1.771e+09 ± 2% hackbench.time.voluntary_context_switches
143370 ± 0% -12.0% 126124 ± 1% meminfo.SUnreclaim
2462880 ± 0% -35.6% 1585869 ± 5% softirqs.SCHED
4051 ± 0% -39.9% 2434 ± 3% uptime.idle
1766752 ± 1% +122.6% 3932589 ± 1% vmstat.system.cs
249718 ± 2% +307.4% 1017398 ± 3% vmstat.system.in
1.76e+08 ± 3% +236.0% 5.914e+08 ± 2% time.involuntary_context_switches
208664 ± 2% +26.0% 262929 ± 3% time.minor_page_faults
1272 ± 0% -24.5% 961.37 ± 2% time.user_time
7.64e+08 ± 1% +131.8% 1.771e+09 ± 2% time.voluntary_context_switches
2228 ± 92% +137.1% 5285 ± 15% numa-meminfo.node0.AnonHugePages
73589 ± 4% -12.5% 64393 ± 2% numa-meminfo.node0.SUnreclaim
27438 ± 83% +102.6% 55585 ± 6% numa-meminfo.node0.Shmem
101051 ± 3% -10.9% 90044 ± 2% numa-meminfo.node0.Slab
69844 ± 4% -11.8% 61579 ± 3% numa-meminfo.node1.SUnreclaim
1136461 ± 3% +16.6% 1324662 ± 5% numa-numastat.node0.local_node
1140216 ± 3% +16.2% 1324689 ± 5% numa-numastat.node0.numa_hit
3755 ± 68% -99.3% 27.25 ± 94% numa-numastat.node0.other_node
1098889 ± 4% +20.1% 1320211 ± 6% numa-numastat.node1.local_node
1101996 ± 4% +20.5% 1327590 ± 6% numa-numastat.node1.numa_hit
7.18 ± 0% -50.2% 3.57 ± 43% perf-profile.cycles-pp.call_cpuidle
8.09 ± 0% -44.7% 4.47 ± 38% perf-profile.cycles-pp.cpu_startup_entry
7.17 ± 0% -50.3% 3.56 ± 43% perf-profile.cycles-pp.cpuidle_enter
7.14 ± 0% -50.3% 3.55 ± 43% perf-profile.cycles-pp.cpuidle_enter_state
7.11 ± 0% -50.6% 3.52 ± 43% perf-profile.cycles-pp.intel_idle
8.00 ± 0% -44.5% 4.44 ± 38% perf-profile.cycles-pp.start_secondary
92.32 ± 0% +5.4% 97.32 ± 0% turbostat.%Busy
2763 ± 0% +5.4% 2912 ± 0% turbostat.Avg_MHz
7.48 ± 0% -66.5% 2.50 ± 7% turbostat.CPU%c1
0.20 ± 2% -6.4% 0.18 ± 2% turbostat.CPU%c6
180.03 ± 0% -1.3% 177.62 ± 0% turbostat.CorWatt
5.83 ± 0% +38.9% 8.10 ± 3% turbostat.RAMWatt
6857 ± 83% +102.8% 13905 ± 6% numa-vmstat.node0.nr_shmem
18395 ± 4% -12.4% 16121 ± 2% numa-vmstat.node0.nr_slab_unreclaimable
675569 ± 3% +12.7% 761135 ± 4% numa-vmstat.node0.numa_local
71537 ± 5% -7.9% 65920 ± 2% numa-vmstat.node0.numa_other
17456 ± 4% -11.7% 15405 ± 3% numa-vmstat.node1.nr_slab_unreclaimable
695848 ± 3% +14.9% 799683 ± 5% numa-vmstat.node1.numa_hit
677405 ± 4% +14.5% 775903 ± 6% numa-vmstat.node1.numa_local
18442 ± 19% +28.9% 23779 ± 5% numa-vmstat.node1.numa_other
1.658e+09 ± 0% -59.1% 6.784e+08 ± 7% cpuidle.C1-IVT.time
1.066e+08 ± 0% -40.3% 63661563 ± 6% cpuidle.C1-IVT.usage
26348635 ± 0% -86.8% 3471048 ± 15% cpuidle.C1E-IVT.time
291620 ± 0% -85.1% 43352 ± 15% cpuidle.C1E-IVT.usage
54158643 ± 1% -88.5% 6254009 ± 14% cpuidle.C3-IVT.time
482437 ± 1% -87.0% 62620 ± 16% cpuidle.C3-IVT.usage
5.028e+08 ± 0% -75.8% 1.219e+08 ± 8% cpuidle.C6-IVT.time
3805026 ± 0% -85.5% 552326 ± 16% cpuidle.C6-IVT.usage
2766 ± 4% -51.4% 1344 ± 6% cpuidle.POLL.usage
35841 ± 0% -12.0% 31543 ± 0% proc-vmstat.nr_slab_unreclaimable
154090 ± 2% +43.1% 220509 ± 3% proc-vmstat.numa_hint_faults
129240 ± 2% +47.4% 190543 ± 3% proc-vmstat.numa_hint_faults_local
2238386 ± 1% +18.4% 2649737 ± 2% proc-vmstat.numa_hit
2232163 ± 1% +18.4% 2643105 ± 2% proc-vmstat.numa_local
22315 ± 1% -21.0% 17625 ± 5% proc-vmstat.numa_pages_migrated
154533 ± 2% +45.6% 225071 ± 3% proc-vmstat.numa_pte_updates
382980 ± 2% +33.2% 510157 ± 4% proc-vmstat.pgalloc_dma32
7311738 ± 2% +37.2% 10029060 ± 2% proc-vmstat.pgalloc_normal
7672040 ± 2% +37.1% 10519738 ± 2% proc-vmstat.pgfree
22315 ± 1% -21.0% 17625 ± 5% proc-vmstat.pgmigrate_success
5487 ± 6% -12.6% 4797 ± 4% slabinfo.UNIX.active_objs
5609 ± 5% -12.2% 4926 ± 4% slabinfo.UNIX.num_objs
4362 ± 4% +14.6% 4998 ± 2% slabinfo.cred_jar.active_objs
4362 ± 4% +14.6% 4998 ± 2% slabinfo.cred_jar.num_objs
42525 ± 0% -41.6% 24824 ± 3% slabinfo.kmalloc-256.active_objs
845.50 ± 0% -42.9% 482.50 ± 3% slabinfo.kmalloc-256.active_slabs
54124 ± 0% -42.9% 30920 ± 3% slabinfo.kmalloc-256.num_objs
845.50 ± 0% -42.9% 482.50 ± 3% slabinfo.kmalloc-256.num_slabs
47204 ± 0% -37.9% 29335 ± 2% slabinfo.kmalloc-512.active_objs
915.25 ± 0% -39.8% 551.00 ± 3% slabinfo.kmalloc-512.active_slabs
58599 ± 0% -39.8% 35300 ± 3% slabinfo.kmalloc-512.num_objs
915.25 ± 0% -39.8% 551.00 ± 3% slabinfo.kmalloc-512.num_slabs
12443 ± 2% -20.1% 9944 ± 3% slabinfo.pid.active_objs
12443 ± 2% -20.1% 9944 ± 3% slabinfo.pid.num_objs
440.00 ± 5% -32.8% 295.75 ± 4% slabinfo.taskstats.active_objs
440.00 ± 5% -32.8% 295.75 ± 4% slabinfo.taskstats.num_objs
312.45 ±157% -94.8% 16.29 ± 33% sched_debug.cfs_rq:/.load.stddev
0.27 ± 5% -56.3% 0.12 ± 30% sched_debug.cfs_rq:/.nr_running.stddev
16.51 ± 1% +9.5% 18.08 ± 3% sched_debug.cfs_rq:/.runnable_load_avg.avg
0.05 ±100% +7950.0% 3.66 ± 48% sched_debug.cfs_rq:/.runnable_load_avg.min
-740916 ±-28% -158.5% 433310 ±120% sched_debug.cfs_rq:/.spread0.avg
1009940 ± 19% +75.8% 1775442 ± 30% sched_debug.cfs_rq:/.spread0.max
-2384171 ± -7% -65.7% -818684 ±-76% sched_debug.cfs_rq:/.spread0.min
749.14 ± 1% +13.0% 846.34 ± 1% sched_debug.cfs_rq:/.util_avg.min
51.66 ± 4% -36.3% 32.92 ± 5% sched_debug.cfs_rq:/.util_avg.stddev
161202 ± 7% -41.7% 93997 ± 4% sched_debug.cpu.avg_idle.avg
595158 ± 6% -51.2% 290491 ± 22% sched_debug.cpu.avg_idle.max
132760 ± 8% -58.8% 54718 ± 19% sched_debug.cpu.avg_idle.stddev
11.40 ± 11% +111.0% 24.05 ± 16% sched_debug.cpu.clock.stddev
11.40 ± 11% +111.0% 24.05 ± 16% sched_debug.cpu.clock_task.stddev
32.34 ± 2% +23.9% 40.07 ± 19% sched_debug.cpu.cpu_load[0].max
0.34 ±103% +520.0% 2.11 ± 67% sched_debug.cpu.cpu_load[0].min
32.18 ± 2% +22.7% 39.50 ± 17% sched_debug.cpu.cpu_load[1].max
3.32 ± 8% +84.9% 6.14 ± 12% sched_debug.cpu.cpu_load[1].min
5.39 ± 7% +36.3% 7.34 ± 4% sched_debug.cpu.cpu_load[2].min
33.18 ± 3% +14.0% 37.82 ± 5% sched_debug.cpu.cpu_load[4].max
5.56 ± 6% +16.2% 6.45 ± 6% sched_debug.cpu.cpu_load[4].stddev
16741 ± 0% -15.4% 14166 ± 2% sched_debug.cpu.curr->pid.avg
19196 ± 0% -18.3% 15690 ± 1% sched_debug.cpu.curr->pid.max
5174 ± 5% -55.4% 2305 ± 14% sched_debug.cpu.curr->pid.stddev
1410 ± 1% -14.2% 1210 ± 6% sched_debug.cpu.nr_load_updates.stddev
9.95 ± 3% -14.5% 8.51 ± 5% sched_debug.cpu.nr_running.avg
29.07 ± 2% -15.0% 24.70 ± 4% sched_debug.cpu.nr_running.max
0.05 ±100% +850.0% 0.43 ± 37% sched_debug.cpu.nr_running.min
7.64 ± 3% -23.0% 5.88 ± 2% sched_debug.cpu.nr_running.stddev
10979930 ± 1% +123.3% 24518490 ± 2% sched_debug.cpu.nr_switches.avg
12350130 ± 1% +117.5% 26856375 ± 2% sched_debug.cpu.nr_switches.max
9594835 ± 2% +132.6% 22314436 ± 2% sched_debug.cpu.nr_switches.min
769296 ± 1% +56.8% 1206190 ± 3% sched_debug.cpu.nr_switches.stddev
8.30 ± 18% +32.9% 11.02 ± 15% sched_debug.cpu.nr_uninterruptible.max
turbostat.Avg_MHz
3000 O+---O-O-O--O-O-O-O--O-O-O--O-O-O--O-O-O-O--O------------------------+
*.O..*.*.* *.*.*..*.*.*..*.*.*..*.*.*.*..*.*.*..*.*.*..*.*.*.*..*.*
2500 ++ : : |
| : : |
| : : |
2000 ++ : : |
| : : |
1500 ++ : : |
| : : |
1000 ++ : : |
| : : |
| :: |
500 ++ : |
| : |
0 ++----------*--------------------------------------------------------+
turbostat._Busy
100 O+O--O-O-O--O-O-O--O-O-O--O-O-O--O-O-O--O-O-O-------------------------+
90 *+*..*.*.* *.*..*.*.*..*.*.*..*.*.*..*.*.*..*.*.*..*.*.*..*.*.*..*.*
| : : |
80 ++ : : |
70 ++ : : |
| : : |
60 ++ : : |
50 ++ : : |
40 ++ : : |
| : : |
30 ++ : : |
20 ++ :: |
| : |
10 ++ : |
0 ++----------*---------------------------------------------------------+
turbostat.CPU_c1
8 ++---------------*------------------------------------------------------+
*.*..*.*..* *. *..*.*.*..*.*..*.*.*..*.*..*.*.*..*.*..*.*.*..*.*..*.*
7 ++ : : |
6 ++ : : |
| : : |
5 ++ : : |
| : : |
4 ++ : : |
| O : : |
3 O+ O O: : O O |
2 ++ O :O:O O O O O O O O O O O |
| : O |
1 ++ : |
| : |
0 ++----------*-----------------------------------------------------------+
turbostat.PkgWatt
250 ++--------------------------------------------------------------------+
| |
O.O..O.O.O O O.O..O.O.O..O.O.O..O.O.O..O.O.O..*.*.*..*.*.*..*.*.*..*.*
200 ++ : : |
| : : |
| : : |
150 ++ : : |
| : : |
100 ++ : : |
| : : |
| : : |
50 ++ : : |
| : |
| : |
0 ++----------*---------------------------------------------------------+
turbostat.CorWatt
200 ++--------------------------------------------------------------------+
180 *+*..*.*.* *.*..*.*.*..*.*.*..*.*.*..*.*.*..*.*.*..*.*.*..*.*.*..*.*
O O O O O O O O O O O O O O O O O O O O |
160 ++ : : |
140 ++ : : |
| : : |
120 ++ : : |
100 ++ : : |
80 ++ : : |
| : : |
60 ++ : : |
40 ++ :: |
| : |
20 ++ : |
0 ++----------*---------------------------------------------------------+
turbostat.RAMWatt
9 ++---------------O------------------------------------------------------+
| O O O O O O O O O O O |
8 ++O O O O O O O |
7 O+ |
| |
6 *+*..*.*..* *..*.*..*.*.*..*.*..*.*.*..*.*..*.*.*..*.*..*.*.*..*.*..*.*
5 ++ : : |
| : : |
4 ++ : : |
3 ++ : : |
| : : |
2 ++ : : |
1 ++ : |
| : |
0 ++----------*-----------------------------------------------------------+
hackbench.throughput
200000 *+*-*--*-*---*--*-*-*-*--*-*-*-*--*-*-*-*-*--*-*-*-*--*-*-*-*--*-*-*
180000 ++ : : |
| : : |
160000 ++ : : |
140000 O+O : : O O |
| O O O:O:O O O O O O O O O O O O |
120000 ++ : : |
100000 ++ : : |
80000 ++ : : |
| : : |
60000 ++ : : |
40000 ++ : |
| : |
20000 ++ : |
0 ++---------*-------------------------------------------------------+
time.user_time
1400 ++------------*------------------------------------------------------+
*.*..*.*.* : *.*..*.*.*..*.*.*..*.*.*.*..*.*.*..*.*.*..*.*.*.*..*.*
1200 ++ : : |
| : : |
1000 O+O O: O:O O O O O O O O O O |
| O O : : O O O O |
800 ++ : : |
| : : |
600 ++ : : |
| : : |
400 ++ : : |
| :: |
200 ++ : |
| : |
0 ++----------*--------------------------------------------------------+
time.minor_page_faults
300000 ++-----------------------------------------------------------------+
| O O O O O O O O O |
250000 O+O O O O O O O O O O |
| |
*.*.*..*.* *..*.*.*.*..*.*.*.*..*.*.*.*.*..*. .*.*..*.*. .*..*.*.*
200000 ++ : : * * |
| : : |
150000 ++ : : |
| : : |
100000 ++ : : |
| : : |
| : : |
50000 ++ : |
| : |
0 ++---------*-------------------------------------------------------+
time.voluntary_context_switches
2e+09 ++----------------------------------------------------------------+
1.8e+09 ++ O O O O O O |
| O O O O O O O O O O O O |
1.6e+09 O+O |
1.4e+09 ++ |
| |
1.2e+09 ++ |
1e+09 ++ |
8e+08 ++ .*
*.*.*..*.* *.*..*.*.*.*.*..*.*.*.*.*..*.*.*.*.*..*.*.*.*.*..*.* |
6e+08 ++ : : |
4e+08 ++ : : |
| : : |
2e+08 ++ : |
0 ++---------*------------------------------------------------------+
time.involuntary_context_switches
7e+08 ++------------------------------------------------------------------+
| O O O |
6e+08 ++ O O O O O O O O O O O |
O O O O O O |
5e+08 ++ |
| |
4e+08 ++ |
| |
3e+08 ++ |
| |
2e+08 ++ .*.. .*.*. .*.*.*. .*
*.*..*.*.* *.*.* *.*.*.*..*.*.*..*.*.*.*. *.*. *..* |
1e+08 ++ : + |
| : + |
0 ++---------*--------------------------------------------------------+
hackbench.time.user_time
1400 ++------------*------------------------------------------------------+
*.*..*.*.* : *.*..*.*.*..*.*.*..*.*.*.*..*.*.*..*.*.*..*.*.*.*..*.*
1200 ++ : : |
| : : |
1000 O+O O: O:O O O O O O O O O O |
| O O : : O O O O |
800 ++ : : |
| : : |
600 ++ : : |
| : : |
400 ++ : : |
| :: |
200 ++ : |
| : |
0 ++----------*--------------------------------------------------------+
hackbench.time.percent_of_cpu_this_job_got
5000 ++-------------------------------------------------------------------+
4500 O+O O O O O O O O O O O O O O O O O O O |
*.*..*.*.* *.*.*..*.*.*..*.*.*..*.*.*.*..*.*.*..*.*.*..*.*.*.*..*.*
4000 ++ : : |
3500 ++ : : |
| : : |
3000 ++ : : |
2500 ++ : : |
2000 ++ : : |
| : : |
1500 ++ : : |
1000 ++ : : |
| : |
500 ++ : |
0 ++----------*--------------------------------------------------------+
hackbench.time.minor_page_faults
300000 ++-----------------------------------------------------------------+
| O O O O O O O O O |
250000 O+O O O O O O O O O O |
| |
*.*.*..*.* *..*.*.*.*..*.*.*.*..*.*.*.*.*..*. .*.*..*.*. .*..*.*.*
200000 ++ : : * * |
| : : |
150000 ++ : : |
| : : |
100000 ++ : : |
| : : |
| : : |
50000 ++ : |
| : |
0 ++---------*-------------------------------------------------------+
hackbench.time.voluntary_context_switches
2e+09 ++----------------------------------------------------------------+
1.8e+09 ++ O O O O O O |
| O O O O O O O O O O O O |
1.6e+09 O+O |
1.4e+09 ++ |
| |
1.2e+09 ++ |
1e+09 ++ |
8e+08 ++ .*
*.*.*..*.* *.*..*.*.*.*.*..*.*.*.*.*..*.*.*.*.*..*.*.*.*.*..*.* |
6e+08 ++ : : |
4e+08 ++ : : |
| : : |
2e+08 ++ : |
0 ++---------*------------------------------------------------------+
hackbench.time.involuntary_context_switches
7e+08 ++------------------------------------------------------------------+
| O O O |
6e+08 ++ O O O O O O O O O O O |
O O O O O O |
5e+08 ++ |
| |
4e+08 ++ |
| |
3e+08 ++ |
| |
2e+08 ++ .*.. .*.*. .*.*.*. .*
*.*..*.*.* *.*.* *.*.*.*..*.*.*..*.*.*.*. *.*. *..* |
1e+08 ++ : + |
| : + |
0 ++---------*--------------------------------------------------------+
softirqs.SCHED
3e+06 ++----------------------------------------------------------------+
| |
2.5e+06 *+*.*..*.* *.*..*.*.*.*.*..*.*.*.*.*..*.*.*.*.*.. .*. .*. |
| : : *.* *.*. *.*
| : : |
2e+06 ++ : : |
O O O: : O O O O |
1.5e+06 ++ O O :O:O O O O O O O O O O |
| : : |
1e+06 ++ : : |
| : : |
| :: |
500000 ++ : |
| : |
0 ++---------*------------------------------------------------------+
uptime.idle
4500 ++-------------------------------------------------------------------+
*.*..*.*.* .*.*..*.*.*..*.*.*..*.*.*.*..*.*.*..*. .*. .*.*..*.*
4000 ++ : * *.*. * |
3500 ++ : : |
| : : |
3000 ++ : : |
2500 O+O O: O: O O O O O O O |
| O : :O O O O O O O |
2000 ++ O : : |
1500 ++ : : |
| : : |
1000 ++ : : |
500 ++ : |
| : |
0 ++----------*--------------------------------------------------------+
cpuidle.POLL.usage
3500 ++-------------------------------------------------------------------+
| |
3000 ++ .*. *. .*.. .*. .*.. .*. .*.. .*
*.*..* * : * * *..*.* *.*.*.*. * *.*.*..*.*.*.*..* |
2500 ++ : : |
| : : |
2000 ++ : : |
O O : : |
1500 ++ O: : O O |
| O :O:O O O O O O O O O O |
1000 ++ O : : O O |
| : : |
500 ++ :: |
| : |
0 ++----------*--------------------------------------------------------+
cpuidle.C1-IVT.time
1.8e+09 *+*-*--*-*---*-*--*---*-*-*--*-*-*-*-*--*-*-*---*-----------------+
| : : * * *.*.*.*.*..*.*.*
1.6e+09 ++ : : |
1.4e+09 ++ : : |
| : : |
1.2e+09 ++ : : |
1e+09 ++ : : |
| : : |
8e+08 O+O O: : O O O O |
6e+08 ++ O O :O:O O O O O O O O |
| : : O O |
4e+08 ++ : |
2e+08 ++ : |
| : |
0 ++---------*------------------------------------------------------+
cpuidle.C1-IVT.usage
1.2e+08 ++----------------------------------------------------------------+
*.*.*..*.* *.*..*.*.*.*.*..*.*.*.*.*..*.*.*.*.*.. .*. |
1e+08 ++ : : *.* *.*..*.*.*
| : : |
| : : |
8e+07 O+O : : |
| O: : O O O O |
6e+07 ++ O O :O:O O O O O O O O |
| : : O O |
4e+07 ++ : : |
| : : |
| : |
2e+07 ++ : |
| : |
0 ++---------*------------------------------------------------------+
cpuidle.C1E-IVT.time
3e+07 ++----------------------------------------------------------------+
*.*.*..*.* *.*..*.*.*.*.*..*.*.*.*.*..*.*.*.*.*.. .*.*.*. |
2.5e+07 ++ : : * *..*.*.*
| : : |
| : : |
2e+07 ++ : : |
| : : |
1.5e+07 ++ : : |
| : : |
1e+07 ++ : : |
| : : |
O : |
5e+06 ++O O O O O O O O O |
| O : O O O O O O O O O |
0 ++---------*------------------------------------------------------+
cpuidle.C1E-IVT.usage
350000 ++-----------------------------------------------------------------+
| .*.*. |
300000 *+*.*..*.* *. *.*..*.*.*.*..*.*.*.*.*..*.*.*.*..*.*.*.*..*.*.*
| : : |
250000 ++ : : |
| : : |
200000 ++ : : |
| : : |
150000 ++ : : |
| : : |
100000 ++ : : |
| O :: |
50000 O+ O O O O O O O O O O |
| O : O O O O O O O |
0 ++---------*-------------------------------------------------------+
cpuidle.C3-IVT.time
6e+07 *+*--*-*-*------*--------*-*-*--*-*-*--*-*-*-*----*-----------------+
| : * *.*..* * *.*..*.*.*.*..*.|
5e+07 ++ : : *
| : : |
| : : |
4e+07 ++ : : |
| : : |
3e+07 ++ : : |
| : : |
2e+07 ++ : : |
| : : |
| :: |
1e+07 O+O O O : O O O O |
| O O O O O O O O O O O O |
0 ++---------*--------------------------------------------------------+
cpuidle.C3-IVT.usage
600000 ++-----------------------------------------------------------------+
| |
500000 *+*.*..*.* *..*.*.*.*..*.*.*.*..*.*.*.*.*..*.*.*. .*. |
| : : *..* *.*..*.*.*
| : : |
400000 ++ : : |
| : : |
300000 ++ : : |
| : : |
200000 ++ : : |
| : : |
| :: |
100000 O+O O O : O O O O O |
| O O O O O O O O O O O |
0 ++---------*-------------------------------------------------------+
cpuidle.C6-IVT.time
6e+08 ++------------------------------------------------------------------+
|.*..*.*.* .*.*..*.*. .*.*.*.*.. |
5e+08 *+ : *.*.*.*..*.* *. *.*.*.*..*.*.*.*..*.*
| : : |
| : : |
4e+08 ++ : : |
| : : |
3e+08 ++ : : |
| : : |
2e+08 ++ : : |
| O : : |
O O O O O: O O O O O O O O O O O |
1e+08 ++ :: O O O |
| : |
0 ++---------*--------------------------------------------------------+
cpuidle.C6-IVT.usage
4.5e+06 ++----------------------------------------------------------------+
*.*.*..*.* .*..*. .*.*.*..*.*.*.*.*..*.*.*.*. .*. |
4e+06 ++ : * * *..*.* *.*..*.*.*
3.5e+06 ++ : : |
| : : |
3e+06 ++ : : |
2.5e+06 ++ : : |
| : : |
2e+06 ++ : : |
1.5e+06 ++ : : |
| : : |
1e+06 ++O :: |
500000 O+ O O O O O O O O O |
| O : O O O O O O O O |
0 ++---------*------------------------------------------------------+
meminfo.Slab
200000 *+*-*--*-*---*--*-*-*-*--*-*-*-*--*-*-*-*-*--*-*-*-*--*-*-*-*--*-*-*
180000 ++O O : O O |
O O O : O O O O O O O O O O O O O |
160000 ++ : : |
140000 ++ : : |
| : : |
120000 ++ : : |
100000 ++ : : |
80000 ++ : : |
| : : |
60000 ++ : : |
40000 ++ : |
| : |
20000 ++ : |
0 ++---------*-------------------------------------------------------+
meminfo.SUnreclaim
160000 ++-----------------------------------------------------------------+
*. .*..*.* *..*.*. .*. .*.*..*.*. .*.*..*. .*. .*.*.*.*..*. .*
140000 ++* : : *.*. * * * *. * |
120000 O+O O O O O O O O O O O O O O O O O O O |
| : : |
100000 ++ : : |
| : : |
80000 ++ : : |
| : : |
60000 ++ : : |
40000 ++ : : |
| : |
20000 ++ : |
| : |
0 ++---------*-------------------------------------------------------+
vmstat.system.in
1.2e+06 ++----------------------------------------------------------------+
| O O O |
1e+06 ++ O O O O O O O O O O O O |
| O O O |
O O |
800000 ++ |
| |
600000 ++ |
| |
400000 ++ |
| |
*.*.*..*.* *.*..*.*.*.*.*..*.*.*.*.*..*.*.*.*.*..*.*.*.*.*..*.*.*
200000 ++ : : |
| : : |
0 ++---------*------------------------------------------------------+
vmstat.system.cs
4.5e+06 ++----------------------------------------------------------------+
| O O O O |
4e+06 O+ O O O O O O O O O O O O O O |
3.5e+06 ++O |
| |
3e+06 ++ |
2.5e+06 ++ |
| |
2e+06 ++ .*. .*
1.5e+06 *+*.*..*.* *.*..*.*.*.*.*..*.*.*.*.*..*.*.*.*.*..*.*.* *..*.* |
| : : |
1e+06 ++ : : |
500000 ++ : : |
| : |
0 ++---------*------------------------------------------------------+
[*] bisect-good sample
[O] bisect-bad sample
To reproduce:
git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
***************************************************************************************************
ivb42: 48 threads Ivytown Ivy Bridge-EP with 64G memory
=========================================================================================
compiler/cpufreq_governor/kconfig/nr_task/rootfs/tbox_group/test/testcase:
gcc-4.9/performance/x86_64-rhel/100%/debian-x86_64-2015-02-07.cgz/ivb42/context1/unixbench
commit:
c5114626f33b62fa7595e57d87f33d9d1f8298a2
53d3bc773eaa7ab1cf63585e76af7ee869d5e709
c5114626f33b62fa 53d3bc773eaa7ab1cf63585e76
---------------- --------------------------
%stddev %change %stddev
\ | \
18006 ± 1% +25.9% 22672 ± 0% unixbench.score
39774 ± 33% +5.4e+05% 2.138e+08 ± 4% unixbench.time.involuntary_context_switches
1717 ± 0% +1.9% 1749 ± 0% unixbench.time.percent_of_cpu_this_job_got
152.51 ± 0% +33.9% 204.18 ± 1% unixbench.time.user_time
7.052e+08 ± 1% -3.9% 6.78e+08 ± 1% unixbench.time.voluntary_context_switches
4.243e+08 ± 3% -9.4% 3.845e+08 ± 7% cpuidle.C1-IVT.time
1.544e+08 ± 6% -37.5% 96475672 ± 5% cpuidle.C1-IVT.usage
409626 ± 4% +28.6% 526843 ± 15% softirqs.RCU
274815 ± 4% -27.5% 199184 ± 9% softirqs.SCHED
39774 ± 33% +5.4e+05% 2.138e+08 ± 4% time.involuntary_context_switches
152.51 ± 0% +33.9% 204.18 ± 1% time.user_time
45.25 ± 0% +12.7% 51.00 ± 0% vmstat.procs.r
11774346 ± 0% +20.2% 14152328 ± 0% vmstat.system.cs
1848728 ± 0% +22.7% 2269123 ± 0% sched_debug.cfs_rq:/.min_vruntime.avg
2029277 ± 0% +18.7% 2409509 ± 0% sched_debug.cfs_rq:/.min_vruntime.max
1561074 ± 5% +29.9% 2027122 ± 3% sched_debug.cfs_rq:/.min_vruntime.min
103209 ± 9% -17.8% 84792 ± 10% sched_debug.cfs_rq:/.min_vruntime.stddev
11.68 ± 6% -35.9% 7.49 ± 6% sched_debug.cfs_rq:/.runnable_load_avg.avg
103208 ± 9% -17.8% 84795 ± 10% sched_debug.cfs_rq:/.spread0.stddev
946393 ± 5% -24.5% 714499 ± 10% sched_debug.cpu.avg_idle.max
234059 ± 6% -36.5% 148728 ± 37% sched_debug.cpu.avg_idle.stddev
11.57 ± 6% -31.2% 7.96 ± 20% sched_debug.cpu.cpu_load[1].avg
11.61 ± 7% -34.4% 7.61 ± 12% sched_debug.cpu.cpu_load[2].avg
11.70 ± 7% -35.4% 7.56 ± 8% sched_debug.cpu.cpu_load[3].avg
11.86 ± 7% -36.1% 7.58 ± 6% sched_debug.cpu.cpu_load[4].avg
0.48 ± 6% +13.9% 0.54 ± 3% sched_debug.cpu.nr_running.avg
0.37 ± 5% +10.5% 0.41 ± 4% sched_debug.cpu.nr_running.stddev
14556348 ± 0% +20.1% 17474921 ± 0% sched_debug.cpu.nr_switches.avg
14764042 ± 0% +24.5% 18380752 ± 0% sched_debug.cpu.nr_switches.max
14296508 ± 0% +14.9% 16430231 ± 0% sched_debug.cpu.nr_switches.min
121577 ± 25% +268.4% 447878 ± 8% sched_debug.cpu.nr_switches.stddev
-9.42 ± -3% +20.4% -11.33 ±-12% sched_debug.cpu.nr_uninterruptible.min
***************************************************************************************************
lkp-hsw-ep4: 72 threads Haswell-EP with 128G memory
=========================================================================================
compiler/cpufreq_governor/ipc/iterations/kconfig/mode/nr_threads/rootfs/tbox_group/testcase:
gcc-4.9/performance/pipe/12/x86_64-rhel/process/50%/debian-x86_64-2015-02-07.cgz/lkp-hsw-ep4/hackbench
commit:
c5114626f33b62fa7595e57d87f33d9d1f8298a2
53d3bc773eaa7ab1cf63585e76af7ee869d5e709
c5114626f33b62fa 53d3bc773eaa7ab1cf63585e76
---------------- --------------------------
%stddev %change %stddev
\ | \
207412 ± 0% -15.6% 175076 ± 1% hackbench.throughput
489.41 ± 0% +18.4% 579.66 ± 1% hackbench.time.elapsed_time
489.41 ± 0% +18.4% 579.66 ± 1% hackbench.time.elapsed_time.max
1.005e+09 ± 0% +113.2% 2.142e+09 ± 4% hackbench.time.involuntary_context_switches
6966 ± 0% +2.2% 7118 ± 0% hackbench.time.percent_of_cpu_this_job_got
32394 ± 0% +19.3% 38635 ± 1% hackbench.time.system_time
1700 ± 0% +54.6% 2627 ± 3% hackbench.time.user_time
3.164e+09 ± 0% +64.2% 5.195e+09 ± 3% hackbench.time.voluntary_context_switches
536.44 ± 0% +17.1% 627.97 ± 1% uptime.boot
4496 ± 1% -16.4% 3757 ± 4% uptime.idle
720.75 ± 0% +14.7% 826.75 ± 0% vmstat.procs.r
8795090 ± 0% +44.3% 12689850 ± 2% vmstat.system.cs
2115904 ± 1% -7.1% 1965559 ± 3% vmstat.system.in
49651750 ± 0% -34.1% 32710138 ± 3% numa-numastat.node0.local_node
49657590 ± 0% -34.1% 32719401 ± 3% numa-numastat.node0.numa_hit
51230886 ± 1% -37.1% 32238968 ± 4% numa-numastat.node1.local_node
51235497 ± 1% -37.1% 32241201 ± 4% numa-numastat.node1.numa_hit
16114 ± 3% +15.3% 18577 ± 2% softirqs.NET_RX
3907664 ± 1% +44.4% 5643157 ± 1% softirqs.RCU
2029740 ± 1% -67.7% 655775 ± 16% softirqs.SCHED
17332687 ± 0% +21.1% 20995794 ± 1% softirqs.TIMER
97.19 ± 0% +1.5% 98.70 ± 0% turbostat.%Busy
2694 ± 0% +1.2% 2726 ± 0% turbostat.Avg_MHz
2.58 ± 2% -56.9% 1.11 ± 7% turbostat.CPU%c1
0.22 ± 3% -14.8% 0.19 ± 2% turbostat.CPU%c6
894518 ± 5% -16.2% 749856 ± 5% numa-meminfo.node0.MemUsed
31304 ± 18% -19.8% 25116 ± 13% numa-meminfo.node0.PageTables
137230 ± 14% -13.2% 119062 ± 7% numa-meminfo.node0.Slab
77654 ± 43% +53.9% 119507 ± 2% numa-meminfo.node1.Active(anon)
676863 ± 6% +18.9% 804493 ± 5% numa-meminfo.node1.MemUsed
40040 ± 87% +102.8% 81204 ± 3% numa-meminfo.node1.Shmem
2.29 ± 8% -82.5% 0.40 ±112% perf-profile.cycles-pp.call_cpuidle
3.41 ± 8% -84.8% 0.52 ±113% perf-profile.cycles-pp.cpu_startup_entry
2.29 ± 8% -82.4% 0.40 ±112% perf-profile.cycles-pp.cpuidle_enter
2.26 ± 9% -82.4% 0.40 ±112% perf-profile.cycles-pp.cpuidle_enter_state
2.24 ± 9% -82.4% 0.40 ±112% perf-profile.cycles-pp.intel_idle
3.42 ± 7% -84.9% 0.52 ±113% perf-profile.cycles-pp.start_secondary
86451 ± 1% +9.1% 94357 ± 3% proc-vmstat.numa_hint_faults_local
1.009e+08 ± 0% -35.6% 64951081 ± 3% proc-vmstat.numa_hit
1.009e+08 ± 0% -35.6% 64941826 ± 3% proc-vmstat.numa_local
1744958 ± 0% -36.7% 1105128 ± 3% proc-vmstat.pgalloc_dma32
99309681 ± 0% -35.5% 64014721 ± 3% proc-vmstat.pgalloc_normal
1.01e+08 ± 0% -35.6% 65068018 ± 3% proc-vmstat.pgfree
489.41 ± 0% +18.4% 579.66 ± 1% time.elapsed_time
489.41 ± 0% +18.4% 579.66 ± 1% time.elapsed_time.max
1.005e+09 ± 0% +113.2% 2.142e+09 ± 4% time.involuntary_context_switches
32394 ± 0% +19.3% 38635 ± 1% time.system_time
1700 ± 0% +54.6% 2627 ± 3% time.user_time
3.164e+09 ± 0% +64.2% 5.195e+09 ± 3% time.voluntary_context_switches
7826 ± 18% -19.7% 6283 ± 13% numa-vmstat.node0.nr_page_table_pages
24938156 ± 0% -34.5% 16344223 ± 2% numa-vmstat.node0.numa_hit
24865727 ± 0% -34.6% 16268676 ± 2% numa-vmstat.node0.numa_local
19415 ± 43% +53.9% 29872 ± 2% numa-vmstat.node1.nr_active_anon
10012 ± 87% +102.5% 20273 ± 3% numa-vmstat.node1.nr_shmem
25578109 ± 2% -35.3% 16544997 ± 3% numa-vmstat.node1.numa_hit
25542618 ± 2% -35.4% 16513089 ± 3% numa-vmstat.node1.numa_local
7.39e+08 ± 1% -63.6% 2.693e+08 ± 12% cpuidle.C1-HSW.time
1.279e+08 ± 2% -75.4% 31468140 ± 20% cpuidle.C1-HSW.usage
97966635 ± 3% -38.4% 60323848 ± 6% cpuidle.C1E-HSW.time
2424496 ± 2% -54.3% 1108542 ± 10% cpuidle.C1E-HSW.usage
2168324 ± 5% -38.4% 1335858 ± 6% cpuidle.C3-HSW.time
23824 ± 2% -51.7% 11496 ± 10% cpuidle.C3-HSW.usage
133416 ± 1% -41.7% 77729 ± 10% cpuidle.C6-HSW.usage
72278 ± 96% -85.4% 10574 ± 13% cpuidle.POLL.time
7564 ± 0% -64.3% 2699 ± 13% cpuidle.POLL.usage
447972 ± 12% -77.1% 102749 ± 39% sched_debug.cfs_rq:/.MIN_vruntime.avg
23408331 ± 2% -74.0% 6077779 ± 38% sched_debug.cfs_rq:/.MIN_vruntime.max
3133258 ± 5% -75.3% 773710 ± 35% sched_debug.cfs_rq:/.MIN_vruntime.stddev
0.17 ±173% +1025.0% 1.88 ± 15% sched_debug.cfs_rq:/.load.min
4.72 ± 5% +21.2% 5.72 ± 4% sched_debug.cfs_rq:/.load_avg.min
447972 ± 12% -77.1% 102749 ± 39% sched_debug.cfs_rq:/.max_vruntime.avg
23408331 ± 2% -74.0% 6077779 ± 38% sched_debug.cfs_rq:/.max_vruntime.max
3133258 ± 5% -75.3% 773710 ± 35% sched_debug.cfs_rq:/.max_vruntime.stddev
34877232 ± 0% -16.9% 28973299 ± 2% sched_debug.cfs_rq:/.min_vruntime.avg
36136568 ± 0% -16.9% 30030834 ± 1% sched_debug.cfs_rq:/.min_vruntime.max
33553337 ± 0% -16.4% 28050567 ± 2% sched_debug.cfs_rq:/.min_vruntime.min
580186 ± 2% -26.0% 429600 ± 11% sched_debug.cfs_rq:/.min_vruntime.stddev
0.08 ±110% +710.0% 0.67 ± 21% sched_debug.cfs_rq:/.nr_running.min
0.17 ± 12% -59.6% 0.07 ± 31% sched_debug.cfs_rq:/.nr_running.stddev
25.39 ± 2% -17.8% 20.88 ± 3% sched_debug.cfs_rq:/.runnable_load_avg.max
0.44 ±173% +1002.5% 4.90 ± 13% sched_debug.cfs_rq:/.runnable_load_avg.min
4.84 ± 2% -39.4% 2.93 ± 8% sched_debug.cfs_rq:/.runnable_load_avg.stddev
952653 ± 15% -51.5% 462372 ± 50% sched_debug.cfs_rq:/.spread0.avg
2206041 ± 10% -31.4% 1514231 ± 8% sched_debug.cfs_rq:/.spread0.max
577122 ± 2% -25.8% 428166 ± 11% sched_debug.cfs_rq:/.spread0.stddev
46.85 ± 3% -34.0% 30.93 ± 24% sched_debug.cfs_rq:/.util_avg.stddev
115635 ± 1% +107.7% 240214 ± 8% sched_debug.cpu.avg_idle.avg
506560 ± 15% +83.7% 930497 ± 4% sched_debug.cpu.avg_idle.max
6833 ±131% +168.7% 18362 ± 34% sched_debug.cpu.avg_idle.min
78999 ± 9% +214.9% 248764 ± 8% sched_debug.cpu.avg_idle.stddev
290289 ± 0% +10.7% 321362 ± 0% sched_debug.cpu.clock.avg
290345 ± 0% +10.7% 321461 ± 0% sched_debug.cpu.clock.max
290230 ± 0% +10.7% 321263 ± 0% sched_debug.cpu.clock.min
34.48 ± 26% +74.7% 60.23 ± 5% sched_debug.cpu.clock.stddev
290289 ± 0% +10.7% 321362 ± 0% sched_debug.cpu.clock_task.avg
290345 ± 0% +10.7% 321461 ± 0% sched_debug.cpu.clock_task.max
290230 ± 0% +10.7% 321263 ± 0% sched_debug.cpu.clock_task.min
34.48 ± 26% +74.7% 60.23 ± 5% sched_debug.cpu.clock_task.stddev
0.50 ± 80% +865.0% 4.82 ± 7% sched_debug.cpu.cpu_load[0].min
2.00 ± 33% +155.0% 5.10 ± 6% sched_debug.cpu.cpu_load[1].min
3.31 ± 17% +59.6% 5.28 ± 6% sched_debug.cpu.cpu_load[2].min
4.28 ± 5% +28.0% 5.47 ± 4% sched_debug.cpu.cpu_load[3].min
29.69 ± 10% -21.4% 23.35 ± 4% sched_debug.cpu.cpu_load[4].max
4.39 ± 5% +24.7% 5.47 ± 4% sched_debug.cpu.cpu_load[4].min
4.99 ± 9% -30.3% 3.47 ± 5% sched_debug.cpu.cpu_load[4].stddev
1275 ± 74% +660.4% 9696 ± 35% sched_debug.cpu.curr->pid.min
2960 ± 11% -54.8% 1338 ± 39% sched_debug.cpu.curr->pid.stddev
0.22 ± 70% +935.0% 2.30 ± 30% sched_debug.cpu.load.min
0.00 ± 11% +39.0% 0.00 ± 4% sched_debug.cpu.next_balance.stddev
245043 ± 0% +12.4% 275488 ± 0% sched_debug.cpu.nr_load_updates.avg
253700 ± 0% +11.3% 282470 ± 0% sched_debug.cpu.nr_load_updates.max
242515 ± 0% +12.5% 272755 ± 0% sched_debug.cpu.nr_load_updates.min
8.93 ± 5% +12.5% 10.05 ± 2% sched_debug.cpu.nr_running.avg
29.08 ± 4% -23.2% 22.35 ± 2% sched_debug.cpu.nr_running.max
0.11 ± 70% +1970.0% 2.30 ± 26% sched_debug.cpu.nr_running.min
6.52 ± 3% -40.5% 3.88 ± 8% sched_debug.cpu.nr_running.stddev
29380032 ± 0% +62.7% 47789650 ± 1% sched_debug.cpu.nr_switches.avg
32480191 ± 0% +63.0% 52947357 ± 1% sched_debug.cpu.nr_switches.max
26568245 ± 0% +64.3% 43639487 ± 2% sched_debug.cpu.nr_switches.min
1724177 ± 1% +28.9% 2223172 ± 5% sched_debug.cpu.nr_switches.stddev
307.39 ± 7% -42.6% 176.42 ± 14% sched_debug.cpu.nr_uninterruptible.max
-278.64 ±-10% -41.9% -162.00 ± -5% sched_debug.cpu.nr_uninterruptible.min
131.21 ± 6% -45.4% 71.66 ± 3% sched_debug.cpu.nr_uninterruptible.stddev
290228 ± 0% +10.7% 321261 ± 0% sched_debug.cpu_clk
286726 ± 0% +11.2% 318853 ± 0% sched_debug.ktime
290228 ± 0% +10.7% 321261 ± 0% sched_debug.sched_clk
Disclaimer:
Results have been estimated based on internal Intel analysis and are provided
for informational purposes only. Any difference in system hardware or software
design or configuration may affect actual performance.
Thanks,
Ying Huang
5 years, 4 months
- 4
- 8
[random] a237e0d704: BUG: kernel test hang
by kernel test robot
FYI, we noticed the following commit:
https://git.kernel.org/pub/scm/linux/kernel/git/tytso/random.git dev
commit a237e0d70467a748cca16b2e4dbaefa831cd5f22 ("random: replace non-blocking pool with a Chacha20-based CRNG")
on test machine: vm-lkp-wsx03-quantal-i386: 1 threads qemu-system-i386 -enable-kvm with 360M memory
caused below changes:
+-------------------------------------------------------------------------+----------+------------+
| | v4.7-rc1 | a237e0d704 |
+-------------------------------------------------------------------------+----------+------------+
| boot_successes | 74 | 4 |
| boot_failures | 31 | |
| invoked_oom-killer:gfp_mask=0x | 9 | |
| Mem-Info | 9 | |
| Out_of_memory:Kill_process | 9 | |
| page_allocation_failure:order:#,mode:#(GFP_HIGHUSER_MOVABLE) | 8 | |
| warn_alloc_failed+0x | 7 | |
| backtrace:_do_fork | 9 | |
| backtrace:SyS_clone | 9 | |
| backtrace:do_writev | 6 | |
| backtrace:SyS_writev | 6 | |
| page_allocation_failure:order:#,mode:#(GFP_HIGHUSER_MOVABLE|__GFP_ZERO) | 1 | |
| BUG:unable_to_handle_kernel | 2 | |
| Oops:#[##] | 2 | |
| EIP_is_at_perf_prepare_sample | 2 | |
| Kernel_panic-not_syncing:Fatal_exception | 2 | |
| Kernel_panic-not_syncing:Out_of_memory_and_no_killable_processes | 2 | |
| IP-Config:Auto-configuration_of_network_failed | 20 | |
+-------------------------------------------------------------------------+----------+------------+
[ 1502.687825] Writes: Total: 2 Max/Min: 0/0 Fail: 0
Elapsed time: 1540
BUG: kernel test hang
qemu-system-i386 -enable-kvm -kernel /pkg/linux/i386-randconfig-s1-201622/gcc-6/a237e0d70467a748cca16b2e4dbaefa831cd5f22/vmlinuz-4.7.0-rc1-00001-ga237e0d -append 'root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-lkp-wsx03-quantal-i386-7/bisect_boot-1-quantal-core-i386.cgz-i386-randconfig-s1-201622-a237e0d70467a748cca16b2e4dbaefa831cd5f22-20160531-96518-1tb7f3s-0.yaml ARCH=i386 kconfig=i386-randconfig-s1-201622 branch=linux-devel/devel-spot-201605311827 commit=a237e0d70467a748cca16b2e4dbaefa831cd5f22 BOOT_IMAGE=/pkg/linux/i386-randconfig-s1-201622/gcc-6/a237e0d70467a748cca16b2e4dbaefa831cd5f22/vmlinuz-4.7.0-rc1-00001-ga237e0d max_uptime=600 RESULT_ROOT=/result/boot/1/vm-lkp-wsx03-quantal-i386/quantal-core-i386.cgz/i386-randconfig-s1-201622/gcc-6/a237e0d70467a748cca16b2e4dbaefa831cd5f22/0 LKP_SERVER=inn earlyprintk=ttyS0,115200 systemd.log_level=err debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal rw ip=::::vm-lkp-wsx03-quantal-i386-7::dhcp drbd.minor_count=8' -initrd /fs/sdc1/initrd-vm-lkp-wsx03-quantal-i386-7 -m 360 -smp 1 -device e1000,netdev=net0 -netdev user,id=net0 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -pidfile /dev/shm/kboot/pid-vm-lkp-wsx03-quantal-i386-7 -serial file:/dev/shm/kboot/serial-vm-lkp-wsx03-quantal-i386-7 -daemonize -display none -monitor null
FYI, raw QEMU command line is:
qemu-system-i386 -enable-kvm -kernel /pkg/linux/i386-randconfig-s1-201622/gcc-6/a237e0d70467a748cca16b2e4dbaefa831cd5f22/vmlinuz-4.7.0-rc1-00001-ga237e0d -append 'root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-lkp-wsx03-quantal-i386-7/bisect_boot-1-quantal-core-i386.cgz-i386-randconfig-s1-201622-a237e0d70467a748cca16b2e4dbaefa831cd5f22-20160531-96518-1tb7f3s-0.yaml ARCH=i386 kconfig=i386-randconfig-s1-201622 branch=linux-devel/devel-spot-201605311827 commit=a237e0d70467a748cca16b2e4dbaefa831cd5f22 BOOT_IMAGE=/pkg/linux/i386-randconfig-s1-201622/gcc-6/a237e0d70467a748cca16b2e4dbaefa831cd5f22/vmlinuz-4.7.0-rc1-00001-ga237e0d max_uptime=600 RESULT_ROOT=/result/boot/1/vm-lkp-wsx03-quantal-i386/quantal-core-i386.cgz/i386-randconfig-s1-201622/gcc-6/a237e0d70467a748cca16b2e4dbaefa831cd5f22/0 LKP_SERVER=inn earlyprintk=ttyS0,115200 systemd.log_level=err debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal rw ip=::::vm-lkp-wsx03-quantal-i386-7::dhcp drbd.minor_count=8' -initrd /fs/sdc1/initrd-vm-lkp-wsx03-quantal-i386-7 -m 360 -smp 1 -device e1000,netdev=net0 -netdev user,id=net0 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -pidfile /dev/shm/kboot/pid-vm-lkp-wsx03-quantal-i386-7 -serial file:/dev/shm/kboot/serial-vm-lkp-wsx03-quantal-i386-7 -daemonize -display none -monitor null
Thanks,
Kernel Test Robot
5 years, 4 months
- 1
- 0
[lkp] [nfs] 25847d9a3a: system hang
by kernel test robot
FYI, we noticed the following commit:
https://git.kernel.org/pub/scm/linux/kernel/git/agruen/linux-richacl.git richacl-wip
commit 25847d9a3ad59f72b8f37dd73f34ef45b5a30115 ("nfs: Add richacl support")
on test machine: lkp-hsw01: 56 threads Grantley Haswell-EP with 64G memory
caused system hang during vm-scalability test (our system heavily relies on NFS
to lanuch testcase and store test data).
To reproduce:
git clone git://git.kernel.org/pub/scm/linux/kernel/git/wfg/lkp-tests.git
cd lkp-tests
bin/lkp install job.yaml # job file is attached in this email
bin/lkp run job.yaml
Thanks,
Xiaolong
5 years, 4 months
- 2
- 1
[Revert "ppdev] 1701f68040: genirq: Flags mismatch irq 4. 00000000 (serial) vs. 00000080 (goldfish_pdev_bus)
by kernel test robot
Greetings,
0day kernel testing robot got the below dmesg and the first bad commit is
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit 1701f680407c6cc05121566cef5293d33881fe71
Author: Linus Torvalds <torvalds(a)linux-foundation.org>
AuthorDate: Fri Mar 25 09:02:13 2016 -0700
Commit: Linus Torvalds <torvalds(a)linux-foundation.org>
CommitDate: Fri Mar 25 09:02:13 2016 -0700
Revert "ppdev: use new parport device model"
This reverts commit e7223f18603374d235d8bb0398532323e5f318b9.
It causes problems when a ppdev tries to register before the parport
driver has been registered with the device model. That will trigger the
BUG_ON(!drv->bus->p);
at drivers/base/driver.c:153. The call chain is
kernel_init ->
kernel_init_freeable ->
do_one_initcall ->
ppdev_init ->
__parport_register_driver ->
driver_register *BOOM*
Reported-by: kernel test robot <fengguang.wu(a)intel.com>
Reported-by: Ross Zwisler <zwisler(a)gmail.com>
Reported-by: Petr Mladek <pmladek(a)suse.com>
Cc: Sudip Mukherjee <sudipm.mukherjee(a)gmail.com>
Cc: Greg Kroah-Hartman <gregkh(a)linuxfoundation.org>
Signed-off-by: Linus Torvalds <torvalds(a)linux-foundation.org>
+------------------------------------------------------------+------------+------------+-------------+
| | 3b3b3bd977 | 1701f68040 | v4.6_052910 |
+------------------------------------------------------------+------------+------------+-------------+
| boot_successes | 0 | 0 | 0 |
| boot_failures | 92 | 26 | 13 |
| kernel_BUG_at_drivers/base/driver.c | 92 | | |
| invalid_opcode:#[##] | 92 | | |
| invalid_opcode:#[##]PREEMPT_PREEMPT_SMP_SMP | 92 | | |
| EIP_is_at_driver_register | 92 | | |
| Kernel_panic-not_syncing:Fatal_exception | 92 | | |
| backtrace:__parport_register_driver | 92 | | |
| backtrace:ppdev_init | 92 | | |
| backtrace:kernel_init_freeable | 92 | | |
| genirq:Flags_mismatch_irq##(serial)vs.#(goldfish_pdev_bus) | 0 | 26 | 13 |
| WARNING:at_arch/x86/mm/dump_pagetables.c:#note_page | 0 | 24 | 13 |
| backtrace:mark_rodata_ro | 0 | 24 | 13 |
| genirq:Flags_mismatch_irq | 0 | 1 | 2 |
| genirq:Flags_mismatch_irq##(serial)vs | 0 | 0 | 2 |
+------------------------------------------------------------+------------+------------+-------------+
[ 14.172557] Bluetooth: Starting self testing
[ 14.173765] Bluetooth: Finished self testing
[ 14.173765] Bluetooth: Finished self testing
[ 14.180471] genirq: Flags mismatch irq 4. 00000000 (serial) vs. 00000080 (goldfish_pdev_bus)
[ 14.180471] genirq: Flags mismatch irq 4. 00000000 (serial) vs. 00000080 (goldfish_pdev_bus)
[ 14.184737] Freeing unused kernel memory: 2312K (8239a000 - 825dc000)
[ 14.184737] Freeing unused kernel memory: 2312K (8239a000 - 825dc000)
[ 14.186874] Write protecting the kernel text: 12348k
git bisect start v4.6 v4.5 --
git bisect bad 7b367f5dba5c5162a7308e85d3fc9170b0cb3e5f # 14:23 0- 22 Merge branch 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
git bisect good 46e595a17dcf11404f713845ecb5b06b92a94e43 # 14:31 22+ 24 Merge tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
git bisect good 70c5eb84738cba88e08526fa14e06418cb2bd473 # 14:36 22+ 23 Merge branch 'misc' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild
git bisect bad 8b8c877febd2610050758f1b7b97050a7d2dc794 # 17:12 0- 24 Merge tag 'hwmon-for-linus-v4.6-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
git bisect bad c155c7492c9ab81f3d358a10eb4f29376ae53d85 # 19:50 0- 29 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input
git bisect good 8407ef4685895759f111190d091394ef974f52fb # 22:27 22+ 48 Merge tag 'rtc-4.6-2' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux
git bisect good f98c2135f8e73f1cfba640dfb80beb0dad75f278 # 22:37 22+ 26 Merge branch 'drm-next' of git://people.freedesktop.org/~airlied/linux
git bisect good 3b3b3bd97788e1f574c71f865d8465b00a6b8708 # 22:44 22+ 26 Merge tag 'firewire-update2' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394
git bisect bad 1701f680407c6cc05121566cef5293d33881fe71 # 22:51 0- 18 Revert "ppdev: use new parport device model"
# first bad commit: [1701f680407c6cc05121566cef5293d33881fe71] Revert "ppdev: use new parport device model"
git bisect good 3b3b3bd97788e1f574c71f865d8465b00a6b8708 # 22:53 66+ 92 Merge tag 'firewire-update2' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394
# extra tests with CONFIG_DEBUG_INFO_REDUCED
git bisect bad 1701f680407c6cc05121566cef5293d33881fe71 # 22:58 0- 13 Revert "ppdev: use new parport device model"
# extra tests on HEAD of linux-devel/devel-hourly-2016052910
git bisect bad cab701ace412fb3a265289932d84b4d0496608ef # 22:58 0- 13 0day head guard for 'devel-hourly-2016052910'
# extra tests on tree/branch linus/master
# extra tests with first bad commit reverted
# extra tests on tree/branch linus/master
# extra tests on tree/branch linux-next/master
This script may reproduce the error.
----------------------------------------------------------------------------
#!/bin/bash
kernel=$1
initrd=quantal-core-i386.cgz
wget --no-clobber https://github.com/fengguang/reproduce-kernel-bug/raw/master/initrd/$initrd
kvm=(
qemu-system-x86_64
-enable-kvm
-cpu kvm64
-kernel $kernel
-initrd $initrd
-m 300
-smp 2
-device e1000,netdev=net0
-netdev user,id=net0
-boot order=nc
-no-reboot
-watchdog i6300esb
-rtc base=localtime
-serial stdio
-display none
-monitor null
)
append=(
hung_task_panic=1
earlyprintk=ttyS0,115200
systemd.log_level=err
debug
apic=debug
sysrq_always_enabled
rcupdate.rcu_cpu_stall_timeout=100
panic=-1
softlockup_panic=1
nmi_watchdog=panic
oops=panic
load_ramdisk=2
prompt_ramdisk=0
console=ttyS0,115200
console=tty0
vga=normal
root=/dev/ram0
rw
drbd.minor_count=8
)
"${kvm[@]}" --append "${append[*]}"
----------------------------------------------------------------------------
---
0-DAY kernel test infrastructure Open Source Technology Center
https://lists.01.org/pipermail/lkp Intel Corporation
5 years, 4 months
- 4
- 4
[lkp] [thermal] 1c3ceab5a8: WARNING: CPU: 0 PID: 1 at fs/sysfs/group.c:61 internal_create_group+0x1e4/0x420
by kernel test robot
FYI, we noticed the following commit:
https://github.com/0day-ci/linux Eduardo-Valentin/thermal-reorganizing-thermal-core/20160531-063319
commit 1c3ceab5a8e7bcd807696d94f8863dd4e400c8c5 ("thermal: core: use dev.groups to manage always present tz attributes")
on test machine: vm-vp-quantal-i386: 1 threads qemu-system-i386 -enable-kvm -cpu Haswell,+smep,+smap with 360M memory
caused below changes:
+------------------------------------------------------------------+------------+------------+
| | ed5838d224 | 1c3ceab5a8 |
+------------------------------------------------------------------+------------+------------+
| boot_successes | 0 | 0 |
| boot_failures | 12 | 10 |
| invoked_oom-killer:gfp_mask=0x | 12 | |
| Mem-Info | 12 | |
| Kernel_panic-not_syncing:Out_of_memory_and_no_killable_processes | 12 | |
| backtrace:btrfs_test_extent_io | 12 | |
| backtrace:init_btrfs_fs | 12 | |
| backtrace:kernel_init_freeable | 12 | 10 |
| page_allocation_failure:order:#,mode:#(GFP_KERNEL|__GFP_NORETRY) | 1 | |
| warn_alloc_failed+0x | 1 | |
| backtrace:ring_buffer_consumer_thread | 1 | |
| WARNING:at_fs/sysfs/group.c:#internal_create_group | 0 | 10 |
| BUG:unable_to_handle_kernel | 0 | 10 |
| Oops | 0 | 10 |
| EIP_is_at_string | 0 | 10 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 10 |
| backtrace:power_supply_register | 0 | 10 |
| backtrace:test_power_init | 0 | 10 |
+------------------------------------------------------------------+------------+------------+
[ 20.597358] __power_supply_register: Expected proper parent device for 'test_ac'
[ 20.601762] __power_supply_register: Expected proper parent device for 'test_battery'
[ 20.607055] ------------[ cut here ]------------
[ 20.612928] WARNING: CPU: 0 PID: 1 at fs/sysfs/group.c:61 internal_create_group+0x1e4/0x420
[ 20.627436] BUG: unable to handle kernel paging request at 6c756d65
[ 20.629794] IP: [<c1685a0c>] string+0x2c/0xb0
[ 20.631621] *pdpt = 0000000000000000 *pde = 0000000000000000
[ 20.634330] Oops: 0000 [#1] PREEMPT SMP
[ 20.638711] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.6.0-rc6-00055-g1c3ceab #1
[ 20.641928] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 20.645710] task: d42d8040 ti: d42d4000 task.ti: d42d4000
[ 20.647635] EIP: 0060:[<c1685a0c>] EFLAGS: 00010086 CPU: 0
[ 20.655603] EIP is at string+0x2c/0xb0
[ 20.657415] EAX: c2e111ca EBX: d42d5de8 ECX: 6c756d65 EDX: ffffffff
[ 20.660981] ESI: fffffffe EDI: ffff0a00 EBP: d42d5cdc ESP: d42d5cbc
[ 20.663074] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 20.665387] CR0: 80050033 CR2: 6c756d65 CR3: 02899000 CR4: 000406f0
[ 20.670149] Stack:
[ 20.671374] c10b44a9 00000282 ffff0a00 ffffff04 c2e115a0 d42d5de8 c23d5bcc c2e111ca
[ 20.676025] d42d5d18 c168710a ffffff04 ffff0a00 00000000 00000001 c2e111c0 000003e0
[ 20.680279] 00000002 c2e115a0 ffffff04 ffff0a00 00000000 000003e0 00000000 d42d5d2c
[ 20.687079] Call Trace:
[ 20.688916] [<c10b44a9>] ? do_raw_spin_unlock+0xc9/0x100
[ 20.690756] [<c168710a>] vsnprintf+0x1fa/0x410
[ 20.692577] [<c16877c7>] vscnprintf+0x17/0x50
[ 20.698734] [<c10c4bde>] vprintk_emit+0x2fe/0x560
[ 20.700766] [<c125a724>] ? internal_create_group+0x1e4/0x420
[ 20.702701] [<c10c4e7d>] vprintk+0x3d/0x40
[ 20.717325] [<c10623c8>] __warn+0xa8/0x100
[ 20.720974] [<c125a724>] ? internal_create_group+0x1e4/0x420
[ 20.723777] [<c106245b>] warn_slowpath_fmt+0x3b/0x40
[ 20.727559] [<c125a724>] internal_create_group+0x1e4/0x420
[ 20.731361] [<c125aa69>] sysfs_create_groups+0x39/0x90
[ 20.734687] [<c181c1f5>] device_add+0x5d5/0x610
[ 20.737403] [<c182d0ac>] ? pm_runtime_init+0xfc/0x110
[ 20.741928] [<c181c327>] device_register+0x17/0x20
[ 20.744590] [<c1bb1f78>] thermal_zone_device_register+0x178/0x840
[ 20.748612] [<c1b4d103>] __power_supply_register+0x273/0x3a0
[ 20.752551] [<c1b4d5b7>] power_supply_register+0x17/0x20
[ 20.757049] [<c27d4858>] test_power_init+0x21/0xa0
[ 20.759699] [<c27d4837>] ? wm831x_power_driver_init+0x11/0x11
[ 20.763614] [<c277fc78>] do_one_initcall+0xf7/0x1b8
[ 20.767399] [<c10b44a9>] ? do_raw_spin_unlock+0xc9/0x100
[ 20.770765] [<c277fea9>] ? kernel_init_freeable+0x170/0x214
[ 20.777180] [<c277fec5>] kernel_init_freeable+0x18c/0x214
[ 20.795488] [<c1ef2260>] kernel_init+0x10/0x110
[ 20.800411] [<c1efb289>] ret_from_kernel_thread+0x21/0x38
[ 20.806318] [<c1ef2250>] ? rest_init+0xb0/0xb0
[ 20.812016] Code: 89 e5 57 56 53 83 ec 14 8b 7d 0c 8b 75 08 89 55 f0 89 fa 89 75 ec 89 7d e8 c1 fa 10 81 f9 ff 0f 00 00 8d 72 ff 76 58 85 d2 74 46 <0f> b6 19 8d 79 01 84 db 75 1a eb 3a 90 8d b4 26 00 00 00 00 83
[ 20.840640] EIP: [<c1685a0c>] string+0x2c/0xb0 SS:ESP 0068:d42d5cbc
[ 20.844714] CR2: 000000006c756d65
[ 20.848276] ---[ end trace c01e283b9f8d84d6 ]---
[ 20.850775] Kernel panic - not syncing: Fatal exception
FYI, raw QEMU command line is:
qemu-system-i386 -enable-kvm -cpu Haswell,+smep,+smap -kernel /pkg/linux/i386-randconfig-x0-05310913/gcc-6/1c3ceab5a8e7bcd807696d94f8863dd4e400c8c5/vmlinuz-4.6.0-rc6-00055-g1c3ceab -append 'root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-vp-quantal-i386-41/bisect_boot-1-quantal-core-i386.cgz-i386-randconfig-x0-05310913-1c3ceab5a8e7bcd807696d94f8863dd4e400c8c5-20160531-120469-1d4e5q5-0.yaml ARCH=i386 kconfig=i386-randconfig-x0-05310913 branch=linux-devel/devel-catchup-201605311016 commit=1c3ceab5a8e7bcd807696d94f8863dd4e400c8c5 BOOT_IMAGE=/pkg/linux/i386-randconfig-x0-05310913/gcc-6/1c3ceab5a8e7bcd807696d94f8863dd4e400c8c5/vmlinuz-4.6.0-rc6-00055-g1c3ceab max_uptime=600 RESULT_ROOT=/result/boot/1/vm-vp-quantal-i386/quantal-core-i386.cgz/i386-randconfig-x0-05310913/gcc-6/1c3ceab5a8e7bcd807696d94f8863dd4e400c8c5/0 LKP_SERVER=inn earlyprintk=ttyS0,115200 systemd.log_level=err debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal rw ip=::::vm-vp-quantal-i386-41::dhcp drbd.minor_count=8' -initrd /fs/sde1/initrd-vm-vp-quantal-i386-41 -m 360 -smp 1 -device e1000,netdev=net0 -netdev user,id=net0 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -pidfile /dev/shm/kboot/pid-vm-vp-quantal-i386-41 -serial file:/dev/shm/kboot/serial-vm-vp-quantal-i386-41 -daemonize -display none -monitor null
Thanks,
Xiaolong
5 years, 4 months
- 1
- 0
[lkp] [thermal] d56e262ce9: BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
by kernel test robot
FYI, we noticed the following commit:
https://github.com/0day-ci/linux Eduardo-Valentin/thermal-core-prevent-zones-with-no-types-to-be-registered/20160531-054136
commit d56e262ce9bb43ee5ff603afef30a2670ecda94f ("thermal: core: move trips attributes to tz->device.groups")
on test machine: vm-lkp-wsx03-1G: 1 threads qemu-system-x86_64 -enable-kvm -cpu host with 1G memory
caused below changes:
+------------------------------------------------------------------+------------+------------+
| | a9ad6daaba | d56e262ce9 |
+------------------------------------------------------------------+------------+------------+
| boot_successes | 0 | 0 |
| boot_failures | 16 | 29 |
| BUG:KASAN:global-out-of-bounds_in_internal_create_group_at_addr | 16 | 29 |
| invoked_oom-killer:gfp_mask=0x | 2 | |
| Mem-Info | 2 | |
| Kernel_panic-not_syncing:Out_of_memory_and_no_killable_processes | 2 | |
| backtrace:power_supply_register | 16 | 29 |
| backtrace:test_power_init | 16 | 29 |
| backtrace:kernel_init_freeable | 16 | 29 |
| backtrace:btrfs_test_extent_io | 2 | |
| backtrace:init_btrfs_fs | 2 | |
| IP-Config:Auto-configuration_of_network_failed | 10 | |
| BUG:KASAN:null-ptr-deref_on_address | 0 | 29 |
| BUG:unable_to_handle_kernel | 0 | 29 |
| Oops | 0 | 29 |
| RIP:internal_create_group | 0 | 29 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 29 |
+------------------------------------------------------------------+------------+------------+
[ 13.017811] ==================================================================
[ 13.019206] BUG: unable to handle kernel NULL pointer dereference at 0000000000000010
[ 13.020849] IP: [<ffffffff87858fb2>] internal_create_group+0x1df/0x3ca
[ 13.022049] PGD 0
[ 13.022613] Oops: 0000 [#1] KASAN
[ 13.023465] CPU: 0 PID: 1 Comm: swapper Tainted: G B 4.6.0-rc6-00065-gd56e262 #1
[ 13.025036] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 13.026595] task: ffff88002ec88040 ti: ffff88002ec90000 task.ti: ffff88002ec90000
[ 13.028029] RIP: 0010:[<ffffffff87858fb2>] [<ffffffff87858fb2>] internal_create_group+0x1df/0x3ca
[ 13.029753] RSP: 0000:ffff88002ec97ac8 EFLAGS: 00010246
[ 13.030687] RAX: 0000000000000000 RBX: ffff88003ed3cb18 RCX: 0000000000000000
[ 13.031910] RDX: 0000000000000042 RSI: 0000000000000000 RDI: 0000000000000246
[ 13.033116] RBP: ffff88002ec97b10 R08: 0000000000000000 R09: fffffbfff1367072
[ 13.034291] R10: ffff88002ec88040 R11: fffffbfff1367073 R12: ffff88003ed3c8d0
[ 13.035510] R13: ffff88003ed72328 R14: 0000000000000010 R15: ffff88003ed3cb30
[ 13.036731] FS: 0000000000000000(0000) GS:ffffffff8925c000(0000) knlGS:0000000000000000
[ 13.038214] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 13.039289] CR2: 0000000000000010 CR3: 0000000009215000 CR4: 00000000000006f0
[ 13.040493] Stack:
[ 13.041009] ffffffff88484c6c ffff88003ed3cb20 000000003ecd3c68 ffff880000000000
[ 13.042687] 0000000000000003 ffff88001b5b07e8 ffff88003ed3c8d0 ffff88001b5b0800
[ 13.044410] 0000000000000000 ffff88002ec97b20 ffffffff878591ab ffff88002ec97b58
[ 13.046130] Call Trace:
[ 13.046689] [<ffffffff88484c6c>] ? thermal_zone_mode_is_visible+0x46/0x46
[ 13.047884] [<ffffffff878591ab>] sysfs_create_group+0xe/0x10
[ 13.048922] [<ffffffff8785929d>] sysfs_create_groups+0x3c/0x83
[ 13.049996] [<ffffffff87e9207f>] device_add+0x3ea/0x87f
[ 13.064033] [<ffffffff87e91c95>] ? dev_warn+0xd0/0xd0
[ 13.064991] [<ffffffff877022ed>] ? __wake_up_locked+0xe/0x10
[ 13.066000] [<ffffffff8771b55d>] ? init_timer_key+0x34/0x40
[ 13.066999] [<ffffffff877020f3>] ? __init_waitqueue_head+0x19/0x20
[ 13.068113] [<ffffffff87ea389c>] ? pm_runtime_init+0x1b2/0x1b7
[ 13.069164] [<ffffffff87e92529>] device_register+0x15/0x18
[ 13.070133] [<ffffffff8848980f>] thermal_zone_device_register+0x37e/0x940
[ 13.071321] [<ffffffff88489491>] ? thermal_notify_framework+0xb/0xb
[ 13.072420] [<ffffffff87e8fe1a>] ? put_device+0x12/0x14
[ 13.073380] [<ffffffff87e9224f>] ? device_add+0x5ba/0x87f
[ 13.074360] [<ffffffff87e91c95>] ? dev_warn+0xd0/0xd0
[ 13.075298] [<ffffffff87ea7e07>] ? wakeup_source_register+0x1b/0x21
[ 13.076389] [<ffffffff883e480f>] __power_supply_register+0x505/0x64d
[ 13.077509] [<ffffffff883e4ef5>] power_supply_register+0xe/0x10
[ 13.078551] [<ffffffff89a0d286>] test_power_init+0x35/0xeb
[ 13.079565] [<ffffffff89a0d251>] ? max8925_power_driver_init+0x14/0x14
[ 13.080736] [<ffffffff899b72b2>] do_one_initcall+0x178/0x242
[ 13.081742] [<ffffffff899b713a>] ? start_kernel+0x49b/0x49b
[ 13.082740] [<ffffffff899b6900>] ? initcall_blacklist+0x60/0xd8
[ 13.083798] [<ffffffff876f1780>] ? parse_args+0x7f/0x448
[ 13.084779] [<ffffffff899b698a>] ? set_debug_rodata+0x12/0x12
[ 13.085804] [<ffffffff899b757d>] kernel_init_freeable+0x201/0x29b
[ 13.086871] [<ffffffff88737aeb>] kernel_init+0xc/0xfb
[ 13.087821] [<ffffffff8873efe2>] ret_from_fork+0x22/0x40
[ 13.088809] [<ffffffff88737adf>] ? rest_init+0x86/0x86
[ 13.089763] Code: e8 9c 3f f6 ff 8b 55 cc 49 8b 36 4c 89 e7 48 8b 45 b8 ff d0 66 85 c0 41 89 c7 75 41 ff 45 cc 49 83 c6 08 4c 89 f7 e8 76 3f f6 ff <49> 8b 06 48 85 c0 75 80 48 8d 7b 20 e8 65 3f f6 ff 4c 8b 73 20
[ 13.098062] RIP [<ffffffff87858fb2>] internal_create_group+0x1df/0x3ca
[ 13.099294] RSP <ffff88002ec97ac8>
[ 13.100011] CR2: 0000000000000010
[ 13.100719] ---[ end trace 1779220cc3662cfa ]---
[ 13.101553] Kernel panic - not syncing: Fatal exception
[ 13.102502] Kernel Offset: 0x6600000 from 0xffffffff81000000 (relocation range: 0xffffffff80000000-0xffffffffbfffffff)
FYI, raw QEMU command line is:
qemu-system-x86_64 -enable-kvm -cpu host -kernel /pkg/linux/x86_64-randconfig-s3-05310954/gcc-6/d56e262ce9bb43ee5ff603afef30a2670ecda94f/vmlinuz-4.6.0-rc6-00065-gd56e262 -append 'root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-lkp-wsx03-1G-24/bisect_boot-1-debian-x86_64-2015-02-07.cgz-x86_64-randconfig-s3-05310954-d56e262ce9bb43ee5ff603afef30a2670ecda94f-20160531-109035-igvyw5-0.yaml ARCH=x86_64 kconfig=x86_64-randconfig-s3-05310954 branch=linux-devel/devel-catchup-201605311019 commit=d56e262ce9bb43ee5ff603afef30a2670ecda94f BOOT_IMAGE=/pkg/linux/x86_64-randconfig-s3-05310954/gcc-6/d56e262ce9bb43ee5ff603afef30a2670ecda94f/vmlinuz-4.6.0-rc6-00065-gd56e262 max_uptime=600 RESULT_ROOT=/result/boot/1/vm-lkp-wsx03-1G/debian-x86_64-2015-02-07.cgz/x86_64-randconfig-s3-05310954/gcc-6/d56e262ce9bb43ee5ff603afef30a2670ecda94f/0 LKP_SERVER=inn earlyprintk=ttyS0,115200 systemd.log_level=err debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal rw ip=::::vm-lkp-wsx03-1G-24::dhcp' -initrd /fs/sdc1/initrd-vm-lkp-wsx03-1G-24 -m 1024 -smp 1 -device e1000,netdev=net0 -netdev user,id=net0,hostfwd=tcp::23623-:22 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -drive file=/fs/sdc1/disk0-vm-lkp-wsx03-1G-24,media=disk,if=virtio -drive file=/fs/sdc1/disk1-vm-lkp-wsx03-1G-24,media=disk,if=virtio -pidfile /dev/shm/kboot/pid-vm-lkp-wsx03-1G-24 -serial file:/dev/shm/kboot/serial-vm-lkp-wsx03-1G-24 -daemonize -display none -monitor null
Thanks,
Xiaolong
5 years, 4 months
- 1
- 0
[gpio] 86ea8a95a4: kernel BUG at drivers/base/driver.c:153!
by kernel test robot
FYI, we noticed the following commit:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit 86ea8a95a42f752fe0aa1c7ad1bfe8ce9be5d30e ("gpio: 104-idio-16: Utilize the ISA bus driver")
on test machine: vm-vp-quantal-i386: 1 threads qemu-system-i386 -enable-kvm -cpu Haswell,+smep,+smap with 360M memory
caused below changes:
+------------------------------------------------------------------+------------+------------+
| | 72bf7443ba | 86ea8a95a4 |
+------------------------------------------------------------------+------------+------------+
| boot_successes | 0 | 0 |
| boot_failures | 12 | 12 |
| invoked_oom-killer:gfp_mask=0x | 12 | |
| Mem-Info | 12 | |
| Kernel_panic-not_syncing:Out_of_memory_and_no_killable_processes | 12 | |
| backtrace:btrfs_test_extent_io | 12 | |
| backtrace:init_btrfs_fs | 12 | |
| backtrace:kernel_init_freeable | 12 | 12 |
| page_allocation_failure:order:#,mode:#(GFP_KERNEL|__GFP_NORETRY) | 1 | |
| warn_alloc_failed+0x | 1 | |
| backtrace:ring_buffer_consumer_thread | 1 | |
| kernel_BUG_at_drivers/base/driver.c | 0 | 12 |
| invalid_opcode:#[##]SMP_DEBUG_PAGEALLOC | 0 | 12 |
| EIP_is_at_driver_register | 0 | 12 |
| Kernel_panic-not_syncing:Fatal_exception | 0 | 12 |
| backtrace:isa_register_driver | 0 | 12 |
| backtrace:idio_16_driver_init | 0 | 12 |
+------------------------------------------------------------------+------------+------------+
[ 10.002548] xz_dec_test: module loaded
[ 10.003490] xz_dec_test: Create a device node with 'mknod xz_dec_test c 250 0' and write .xz files to it.
[ 10.005742] ------------[ cut here ]------------
[ 10.006773] kernel BUG at drivers/base/driver.c:153!
[ 10.008042] invalid opcode: 0000 [#1] SMP DEBUG_PAGEALLOC
[ 10.009379] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.6.0-rc4-00031-g86ea8a9 #1
[ 10.011155] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS Debian-1.8.2-1 04/01/2014
[ 10.013090] task: d3e6e000 ti: d3e78000 task.ti: d3e78000
[ 10.014213] EIP: 0060:[<c15d8814>] EFLAGS: 00010246 CPU: 0
[ 10.015351] EIP is at driver_register+0x29/0xbc
[ 10.016365] EAX: c1ec186c EBX: c1dea3d8 ECX: 00000000 EDX: 00000001
[ 10.017576] ESI: 00000000 EDI: c9fb9340 EBP: d3e79f00 ESP: d3e79ef8
[ 10.018782] DS: 007b ES: 007b FS: 00d8 GS: 0000 SS: 0068
[ 10.019897] CR0: 80050033 CR2: 00000000 CR3: 01fed000 CR4: 000406d0
[ 10.021104] Stack:
[ 10.021834] c1dea3c0 00000000 d3e79f20 c15dedf7 00000286 00000000 00000286 c1f23128
[ 10.024194] 00000000 c9fb9340 d3e79f28 c1f2313b d3e79f84 c1ee7c5b d4d7a500 00000000
[ 10.026562] d3e79f00 c106ee1e 00000000 c1d83ad4 00060006 c1d80bf4 00000259 d4d7a5f8
[ 10.028924] Call Trace:
[ 10.029702] [<c15dedf7>] isa_register_driver+0x2b/0x11a
[ 10.030806] [<c1f23128>] ? gpiolib_debugfs_init+0x1f/0x1f
[ 10.031929] [<c1f2313b>] idio_16_driver_init+0x13/0x15
[ 10.033028] [<c1ee7c5b>] do_one_initcall+0xf7/0x1a4
[ 10.034092] [<c106ee1e>] ? parse_args+0x282/0x38b
[ 10.035143] [<c1ee7e79>] ? kernel_init_freeable+0x171/0x212
[ 10.036287] [<c1ee7e9c>] kernel_init_freeable+0x194/0x212
[ 10.037418] [<c1902636>] kernel_init+0xd/0xd5
[ 10.038424] [<c1909889>] ret_from_kernel_thread+0x21/0x38
[ 10.039547] [<c1902629>] ? rest_init+0x116/0x116
[ 10.040576] Code: 5d c3 55 89 e5 56 53 3e 8d 74 26 00 31 d2 89 c3 8b 40 04 8b 70 48 b8 6c 18 ec c1 85 f6 0f 94 c2 31 c9 e8 08 1c b2 ff 85 f6 75 02 <0f> 0b 8b 43 04 83 78 24 00 74 06 83 7b 20 00 75 18 83 78 28 00
[ 10.048568] EIP: [<c15d8814>] driver_register+0x29/0xbc SS:ESP 0068:d3e79ef8
[ 10.050047] ---[ end trace 7b29a3068007f652 ]---
[ 10.066206] Kernel panic - not syncing: Fatal exception
FYI, raw QEMU command line is:
qemu-system-i386 -enable-kvm -cpu Haswell,+smep,+smap -kernel /pkg/linux/i386-randconfig-x0-05280946/gcc-6/86ea8a95a42f752fe0aa1c7ad1bfe8ce9be5d30e/vmlinuz-4.6.0-rc4-00031-g86ea8a9 -append 'root=/dev/ram0 user=lkp job=/lkp/scheduled/vm-vp-quantal-i386-61/bisect_boot-1-quantal-core-i386.cgz-i386-randconfig-x0-05280946-86ea8a95a42f752fe0aa1c7ad1bfe8ce9be5d30e-20160530-53474-w6nzwk-0.yaml ARCH=i386 kconfig=i386-randconfig-x0-05280946 branch=linux-devel/devel-spot-201605280759 commit=86ea8a95a42f752fe0aa1c7ad1bfe8ce9be5d30e BOOT_IMAGE=/pkg/linux/i386-randconfig-x0-05280946/gcc-6/86ea8a95a42f752fe0aa1c7ad1bfe8ce9be5d30e/vmlinuz-4.6.0-rc4-00031-g86ea8a9 max_uptime=600 RESULT_ROOT=/result/boot/1/vm-vp-quantal-i386/quantal-core-i386.cgz/i386-randconfig-x0-05280946/gcc-6/86ea8a95a42f752fe0aa1c7ad1bfe8ce9be5d30e/0 LKP_SERVER=inn earlyprintk=ttyS0,115200 systemd.log_level=err debug apic=debug sysrq_always_enabled rcupdate.rcu_cpu_stall_timeout=100 panic=-1 softlockup_panic=1 nmi_watchdog=panic oops=panic load_ramdisk=2 prompt_ramdisk=0 console=ttyS0,115200 console=tty0 vga=normal rw ip=::::vm-vp-quantal-i386-61::dhcp drbd.minor_count=8' -initrd /fs/sdd1/initrd-vm-vp-quantal-i386-61 -m 360 -smp 1 -device e1000,netdev=net0 -netdev user,id=net0 -boot order=nc -no-reboot -watchdog i6300esb -rtc base=localtime -pidfile /dev/shm/kboot/pid-vm-vp-quantal-i386-61 -serial file:/dev/shm/kboot/serial-vm-vp-quantal-i386-61 -daemonize -display none -monitor null
Thanks,
Xiaolong
5 years, 4 months
- 3
- 2