linux-kernel - [syzbot] [bluetooth?] INFO: trying to register non-static key in sco_sock

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Message-ID: <000000000000adc8200609fe63a4@google.com>
Date:   Sun, 12 Nov 2023 17:14:18 -0800
From:   syzbot <syzbot+702262f0d6464cc55bd2@...kaller.appspotmail.com>
To:     johan.hedberg@...il.com, linux-bluetooth@...r.kernel.org,
        linux-kernel@...r.kernel.org, luiz.dentz@...il.com,
        marcel@...tmann.org, syzkaller-bugs@...glegroups.com
Subject: [syzbot] [bluetooth?] INFO: trying to register non-static key in
 sco_sock_timeout (2)

Hello,

syzbot found the following issue on:

HEAD commit:    305230142ae0 Merge tag 'pm-6.7-rc1-2' of git://git.kernel...
git tree:       upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=1189277b680000
kernel config:  https://syzkaller.appspot.com/x/.config?x=1ffa1cec3b40f3ce
dashboard link: https://syzkaller.appspot.com/bug?extid=702262f0d6464cc55bd2
compiler:       gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40

Unfortunately, I don't have any reproducer for this issue yet.

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/5572da256a4e/disk-30523014.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/51b2eac17a7c/vmlinux-30523014.xz
kernel image: https://storage.googleapis.com/syzbot-assets/84c61292173b/bzImage-30523014.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+702262f0d6464cc55bd2@...kaller.appspotmail.com

INFO: trying to register non-static key.
The code is fine but needs lockdep annotation, or maybe
you didn't initialize this object before use?
turning off the locking correctness validator.
CPU: 0 PID: 24213 Comm: kworker/0:7 Not tainted 6.6.0-syzkaller-15365-g305230142ae0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Workqueue: events sco_sock_timeout
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0xd9/0x1b0 lib/dump_stack.c:106
 assign_lock_key kernel/locking/lockdep.c:976 [inline]
 register_lock_class+0xd6f/0x1320 kernel/locking/lockdep.c:1289
 __lock_acquire+0x13c/0x5de0 kernel/locking/lockdep.c:5013
 lock_acquire kernel/locking/lockdep.c:5753 [inline]
 lock_acquire+0x1ae/0x510 kernel/locking/lockdep.c:5718
 lock_sock_nested+0x3a/0xf0 net/core/sock.c:3519
 lock_sock include/net/sock.h:1720 [inline]
 sco_sock_timeout+0xd6/0x2b0 net/bluetooth/sco.c:96
 process_one_work+0x884/0x15c0 kernel/workqueue.c:2630
 process_scheduled_works kernel/workqueue.c:2703 [inline]
 worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
 kthread+0x33c/0x440 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
================================================================================
UBSAN: array-index-out-of-bounds in kernel/locking/qspinlock.c:131:9
index 16382 is out of range for type 'long unsigned int [8]'
CPU: 0 PID: 24213 Comm: kworker/0:7 Not tainted 6.6.0-syzkaller-15365-g305230142ae0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
Workqueue: events sco_sock_timeout
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x125/0x1b0 lib/dump_stack.c:106
 ubsan_epilogue lib/ubsan.c:217 [inline]
 __ubsan_handle_out_of_bounds+0x111/0x150 lib/ubsan.c:348
 decode_tail kernel/locking/qspinlock.c:131 [inline]
 __pv_queued_spin_lock_slowpath+0xb37/0xc70 kernel/locking/qspinlock.c:471
 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:586 [inline]
 queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline]
 queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
 do_raw_spin_lock+0x20e/0x2b0 kernel/locking/spinlock_debug.c:115
 spin_lock_bh include/linux/spinlock.h:356 [inline]
 lock_sock_nested+0x5f/0xf0 net/core/sock.c:3522
 lock_sock include/net/sock.h:1720 [inline]
 sco_sock_timeout+0xd6/0x2b0 net/bluetooth/sco.c:96
 process_one_work+0x884/0x15c0 kernel/workqueue.c:2630
 process_scheduled_works kernel/workqueue.c:2703 [inline]
 worker_thread+0x8b9/0x1290 kernel/workqueue.c:2784
 kthread+0x33c/0x440 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
================================================================================


---
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