Greetings, 0day kernel testing robot got the below dmesg and the first bad commit is https://git.kernel.org/pub/scm/linux/kernel/git/jirislaby/linux.git devel commit 6abbedef68c4abc71c9505e49f2f57d357068cc4 Author: Miquel Raynal <miquel.raynal(a)bootlin.com&gt; AuthorDate: Thu Aug 27 10:52:05 2020 +0200 Commit: Miquel Raynal <miquel.raynal(a)bootlin.com&gt; CommitDate: Fri Sep 11 18:55:07 2020 +0200 mtd: rawnand: Use the ECC framework OOB layouts No need to have our own in the raw NAND core. Signed-off-by: Miquel Raynal <miquel.raynal(a)bootlin.com&gt; Link: https://lore.kernel.org/linux-mtd/20200827085208.16276-18-miquel.raynal@b... 23eb0a866a mtd: rawnand: Make use of the ECC framework 6abbedef68 mtd: rawnand: Use the ECC framework OOB layouts 64c52a71e7 8250_tegra: clean up tegra_uart_handle_break +-----------------------------------------------------------+------------+------------+------------+ | | 23eb0a866a | 6abbedef68 | 64c52a71e7 | +-----------------------------------------------------------+------------+------------+------------+ | boot_successes | 16 | 0 | 0 | | boot_failures | 30 | 11 | 2 | | WARNING:at_kernel/rcu/rcutorture.c:#rcutorture_oom_notify | 23 | | | | EIP:rcutorture_oom_notify | 23 | | | | BUG:kernel_NULL_pointer_dereference,address | 22 | 1 | | | Oops:#[##] | 22 | 1 | | | EIP:rcu_torture_fwd_cb_hist | 21 | | | | Kernel_panic-not_syncing:Fatal_exception | 22 | | | | invoked_oom-killer:gfp_mask=0x | 5 | | | | Mem-Info | 6 | | | | EIP:__get_user_4 | 1 | | | | EIP:__put_user_4 | 3 | | | | BUG:kernel_timeout_in_test_stage | 1 | | | | INFO:trying_to_register_non-static_key | 1 | | | | EIP:do_raw_spin_trylock | 1 | | | | EIP:__copy_user_intel | 1 | | | | UBSAN:shift-out-of-bounds_in_arch/x86/kernel/vm#_32.c | 1 | | | | EIP:memcpy | 0 | 1 | | | Kernel_panic-not_syncing:Fatal_exception_in_interrupt | 0 | 1 | | | BUG:kernel_reboot-without-warning_in_test_stage | 0 | 10 | 2 | +-----------------------------------------------------------+------------+------------+------------+ If you fix the issue, kindly add following tag Reported-by: kernel test robot <lkp(a)intel.com&gt; [ 6.491023] random: mountall: uninitialized urandom read (12 bytes read) [ 6.602848] udevd[195]: starting version 175 [ 6.615912] sysctl (190) used greatest stack depth: 6200 bytes left [ 6.671749] init: plymouth-log main process (205) terminated with status 1 [ 6.787488] udevadm (201) used greatest stack depth: 6124 bytes left BUG: kernel reboot-without-warning in test stage Kboot worker: lkp-worker20 # HH:MM RESULT GOOD BAD GOOD_BUT_DIRTY DIRTY_NOT_BAD git bisect start f965d3ec86fa89285db0fbb983da76ba9c398efa v5.8 -- git bisect good 326e311b849426a95cac0149406efb2bbd13fa65 # 10:47 G 10 0 6 8 Merge tag 'pm-5.9-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm git bisect good 7fea526ff18ce71afcbaf7378e177483f0c05400 # 12:38 G 10 0 4 6 Merge remote-tracking branch 'reset/reset/next' into master git bisect bad 6c3ba3a61e4c7f840feec094dd82acbd5d94c6f2 # 17:27 B 0 1 14 4 Merge remote-tracking branch 'sound/for-next' into master git bisect good 1c163b6e4bd957c486c3e1458e0daea9a2f7b47d # 23:48 G 10 0 4 4 Merge remote-tracking branch 'printk/for-next' into master git bisect good 83a28da3a8a95f31b8b6a1bb0895a33ce6ae322f # 00:18 G 10 0 3 3 Merge remote-tracking branch 'dlm/next' into master git bisect bad 33922456d8ca6f15ca352ceb303d1d2330df9234 # 00:31 B 0 2 12 1 Merge remote-tracking branch 'crypto/master' into master git bisect good ca420c03055510aec61b7cc0a6ff1c8cdee94a76 # 01:26 G 10 0 3 3 Merge remote-tracking branch 'bpf-next/master' into master git bisect good 121c7c75c7211f27c1d4b86e4206e5a41c619885 # 02:19 G 10 0 3 5 Merge remote-tracking branch 'gfs2/for-next' into master git bisect good 3f3d8e6771c48ce428f6a2dab6e1248c79b8b729 # 02:53 G 10 0 5 5 Merge remote-tracking branch 'mtd/mtd/next' into master git bisect bad a20c0c3db2c9a989c33ef103d110aac38a5b8a3f # 03:09 B 0 1 10 0 Merge remote-tracking branch 'nand/nand/next' into master git bisect bad abfaaa267771ebecda3aedb8ec1d4c3682ab04a9 # 03:20 B 0 1 10 0 mtd: rawnand: atmel: Drop redundant nand_read_page_op() git bisect good 8f27947f2ea51f14340c5743ed6c865edaaba372 # 04:20 G 10 0 6 7 mtd: nand: Create a helper to extract the ECC configuration git bisect good 23eb0a866a1b001f0912f47caecf73187036acbe # 05:15 G 10 0 9 9 mtd: rawnand: Make use of the ECC framework git bisect bad df0f8f3ef62db1c97a4b30379077141a50c1e175 # 05:27 B 0 1 10 0 mtd: rawnand: Use the ECC framework user input parsing bits git bisect bad ee6e6cd2766eced50c3294a2eeb9753355e821e2 # 05:38 B 0 1 10 0 mtd: rawnand: Use the ECC framework nand_ecc_is_strong_enough() helper git bisect bad 6abbedef68c4abc71c9505e49f2f57d357068cc4 # 05:58 B 1 1 1 1 mtd: rawnand: Use the ECC framework OOB layouts # first bad commit: [6abbedef68c4abc71c9505e49f2f57d357068cc4] mtd: rawnand: Use the ECC framework OOB layouts git bisect good 23eb0a866a1b001f0912f47caecf73187036acbe # 07:38 G 33 0 23 33 mtd: rawnand: Make use of the ECC framework # extra tests with debug options git bisect bad 6abbedef68c4abc71c9505e49f2f57d357068cc4 # 08:11 B 0 1 10 0 mtd: rawnand: Use the ECC framework OOB layouts # extra tests on head commit of jirislaby/devel git bisect bad 64c52a71e74ef6724aa77c6e20cd93d124b76409 # 12:01 B 0 1 11 1 8250_tegra: clean up tegra_uart_handle_break # bad: [64c52a71e74ef6724aa77c6e20cd93d124b76409] 8250_tegra: clean up tegra_uart_handle_break --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/lkp@lists.01.org