#regzbot introduced: v6.1.82..v6.1.83
Dear Jeremy,
Am 21.04.24 um 15:54 schrieb Jeremy Lainé:
After upgrading my kernel to Debian's latest version (6.1.85), I
started encountering systematic kernel BUGs at boot, making the
bluetooth stack unusable. I initially reported this to Debian's bug
tracker:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=1069301
.. but have since confirmed that this is reproducible with vanilla
kernels, including the latest 6.1.y version (6.1.87).
Thank you for reporting this and taking the time to pinpoint the version.
I tried various kernel versions (straight from kernel.org) to pinpoint
when the problem started occurring and the resultats are:
- linux 6.1.80 => OK
- linux 6.1.82 => OK
- linux 6.1.83 => BUG
- linux 6.1.85 => BUG
- linux 6.1.87 => BUG
I have included a trace below, and full system details are available
in the Debian bug listed above. Can you suggest any other tests I can
perform to help diagnose the origin of the problem?
Would you be so kind to go the extra mail, and bisect the commit between
6.1.82 and 6.1.83 [1]?
[ 22.660847] list_del corruption, ffff94d9f6302000->prev is LIST_POISON2 (dead000000000122)
[ 22.660887] ------------[ cut here ]------------
[ 22.660890] kernel BUG at lib/list_debug.c:56!
[ 22.660907] invalid opcode: 0000 [#1] PREEMPT SMP NOPTI
[ 22.660917] CPU: 10 PID: 139 Comm: kworker/u25:0 Not tainted 6.1.0-20-amd64 #1 Debian 6.1.85-1
[ 22.660929] Hardware name: Dell Inc. XPS 9315/00KRKP, BIOS 1.19.1 03/14/2024
[ 22.660936] Workqueue: hci0 hci_cmd_sync_work [bluetooth]
[ 22.661128] RIP: 0010:__list_del_entry_valid.cold+0x4b/0x6f
[ 22.661147] Code: fe ff 0f 0b 48 89 f2 48 89 fe 48 c7 c7 48 18 7a 9f e8 14 a1 fe ff 0f 0b 48 89 fe 48 89 ca 48 c7 c7 10 18 7a 9f e8 00 a1 fe ff <0f> 0b 48 89 fe 48 c7 c7 d8 17 7a 9f e8 ef a0 fe ff 0f 0b 48 89 fe
[ 22.661156] RSP: 0000:ffffae0e406efde0 EFLAGS: 00010246
[ 22.661164] RAX: 000000000000004e RBX: ffff94d9f6302000 RCX: 0000000000000027
[ 22.661172] RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff94dfaf8a03a0
[ 22.661177] RBP: ffff94d859392000 R08: 0000000000000000 R09: ffffae0e406efc78
[ 22.661182] R10: 0000000000000003 R11: ffffffff9fed4448 R12: ffff94d859392000
[ 22.661187] R13: ffff94d859392770 R14: ffff94d858cb9800 R15: dead000000000100
[ 22.661194] FS: 0000000000000000(0000) GS:ffff94dfaf880000(0000) knlGS:0000000000000000
[ 22.661202] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 22.661208] CR2: 00007f423c024038 CR3: 0000000799c04000 CR4: 0000000000750ee0
[ 22.661214] PKRU: 55555554
[ 22.661218] Call Trace:
[ 22.661225] <TASK>
[ 22.661232] ? __die_body.cold+0x1a/0x1f
[ 22.661246] ? die+0x2a/0x50
[ 22.661257] ? do_trap+0xc5/0x110
[ 22.661268] ? __list_del_entry_valid.cold+0x4b/0x6f
[ 22.661279] ? do_error_trap+0x6a/0x90
[ 22.661289] ? __list_del_entry_valid.cold+0x4b/0x6f
[ 22.661298] ? exc_invalid_op+0x4c/0x60
[ 22.661307] ? __list_del_entry_valid.cold+0x4b/0x6f
[ 22.661316] ? asm_exc_invalid_op+0x16/0x20
[ 22.661328] ? __list_del_entry_valid.cold+0x4b/0x6f
[ 22.661337] hci_conn_del+0x136/0x3e0 [bluetooth]
[ 22.661466] hci_abort_conn_sync+0xaa/0x230 [bluetooth]
[ 22.661632] ? abort_conn_sync+0x3d/0x70 [bluetooth]
[ 22.661751] hci_cmd_sync_work+0x9f/0x150 [bluetooth]
[ 22.661915] process_one_work+0x1c4/0x380
[ 22.661929] worker_thread+0x4d/0x380
[ 22.661940] ? rescuer_thread+0x3a0/0x3a0
[ 22.661950] kthread+0xd7/0x100
[ 22.661959] ? kthread_complete_and_exit+0x20/0x20
[ 22.661969] ret_from_fork+0x1f/0x30
[ 22.661984] </TASK>
You can pipe the output through `scripts/decodecode` and it should show
more information.
[…]
Kind regards,
Paul
[1]:
https://docs.kernel.org/admin-guide/verify-bugs-and-bisect-regressions.html
