[moderation] [pm?] BUG: spinlock bad magic in netdev_unregister_kobject

[syzbot]

Hello,

syzbot found the following issue on:

HEAD commit: 7b4f2bc91c15 Add linux-next specific files for 20240418
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=15c0a880980000
kernel config: https://syzkaller.appspot.com/x/.config?x=ae644165a243bf62
dashboard link: https://syzkaller.appspot.com/bug?extid=15a93273d26af18ac819
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
CC: [gre...@linuxfoundation.org len....@intel.com linux-...@vger.kernel.org linu...@vger.kernel.org pa...@ucw.cz raf...@kernel.org]

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

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/524a18e6c5be/disk-7b4f2bc9.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/029f1b84d653/vmlinux-7b4f2bc9.xz
kernel image: https://storage.googleapis.com/syzbot-assets/c02d1542e886/bzImage-7b4f2bc9.xz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+15a932...@syzkaller.appspotmail.com

BUG: spinlock bad magic on CPU#0, kbnepd bnep0/13924
lock: 0xffff88806854d708, .magic: ffffffff, .owner: t_bit, nbits)/1651864367, .owner_cpu: 0
CPU: 0 PID: 13924 Comm: kbnepd bnep0 Not tainted 6.9.0-rc4-next-20240418-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
debug_spin_lock_before kernel/locking/spinlock_debug.c:86 [inline]
do_raw_spin_lock+0x209/0x370 kernel/locking/spinlock_debug.c:115
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:120 [inline]
_raw_spin_lock_irq+0xdf/0x120 kernel/locking/spinlock.c:170
spin_lock_irq include/linux/spinlock.h:376 [inline]
pm_runtime_set_memalloc_noio+0x13d/0x260 drivers/base/power/runtime.c:228
netdev_unregister_kobject+0x178/0x250 net/core/net-sysfs.c:2106
unregister_netdevice_many_notify+0x11dd/0x16e0 net/core/dev.c:11208
unregister_netdevice_many net/core/dev.c:11236 [inline]
unregister_netdevice_queue+0x303/0x370 net/core/dev.c:11115
unregister_netdevice include/linux/netdevice.h:3118 [inline]
unregister_netdev+0x1c/0x30 net/core/dev.c:11254
bnep_session+0x2e09/0x3000 net/bluetooth/bnep/core.c:525
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
------------[ cut here ]------------
UBSAN: array-index-out-of-bounds in kernel/locking/qspinlock.c:131:9
index 9394 is out of range for type 'unsigned long[8]'
CPU: 0 PID: 13924 Comm: kbnepd bnep0 Not tainted 6.9.0-rc4-next-20240418-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
ubsan_epilogue lib/ubsan.c:231 [inline]
__ubsan_handle_out_of_bounds+0x121/0x150 lib/ubsan.c:429
decode_tail kernel/locking/qspinlock.c:131 [inline]
__pv_queued_spin_lock_slowpath+0xd5a/0xdc0 kernel/locking/qspinlock.c:468
pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:584 [inline]
queued_spin_lock_slowpath+0x42/0x50 arch/x86/include/asm/qspinlock.h:51
queued_spin_lock include/asm-generic/qspinlock.h:114 [inline]
do_raw_spin_lock+0x272/0x370 kernel/locking/spinlock_debug.c:116
__raw_spin_lock_irq include/linux/spinlock_api_smp.h:120 [inline]
_raw_spin_lock_irq+0xdf/0x120 kernel/locking/spinlock.c:170
spin_lock_irq include/linux/spinlock.h:376 [inline]
pm_runtime_set_memalloc_noio+0x13d/0x260 drivers/base/power/runtime.c:228
netdev_unregister_kobject+0x178/0x250 net/core/net-sysfs.c:2106
unregister_netdevice_many_notify+0x11dd/0x16e0 net/core/dev.c:11208
unregister_netdevice_many net/core/dev.c:11236 [inline]
unregister_netdevice_queue+0x303/0x370 net/core/dev.c:11115
unregister_netdevice include/linux/netdevice.h:3118 [inline]
unregister_netdev+0x1c/0x30 net/core/dev.c:11254
bnep_session+0x2e09/0x3000 net/bluetooth/bnep/core.c:525
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
</TASK>
---[ end trace ]---


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