Oops: general protection fault, probably for non-canonical address 0xdffffc0000000060: 0000 [#1] SMP KASAN PTI
KASAN: null-ptr-deref in range [0x0000000000000300-0x0000000000000307]
CPU: 0 UID: 0 PID: 10380 Comm: udevd Not tainted 6.16.0-rc2-syzkaller-00047-geb90d36bfa06 #0 PREEMPT(voluntary)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:strcmp+0x5b/0xb0 lib/string.c:284
Code: fa 48 c1 e8 03 83 e2 07 42 0f b6 04 28 38 d0 7f 04 84 c0 75 58 48 89 f0 48 89 f2 0f b6 6b ff 4c 8d 66 01 48 c1 e8 03 83 e2 07 <42> 0f b6 04 28 38 d0 7f 04 84 c0 75 2c 41 3a 6c 24 ff 74 ae 19 c0
RSP: 0018:ffffc900000079b8 EFLAGS: 00010046
RAX: 0000000000000060 RBX: ffffffff876908c1 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000300 RDI: ffffffff876908c0
RBP: 0000000000000026 R08: 0000000000000001 R09: 0000000000000001
R10: ffff88811a8c800b R11: 0000000000000001 R12: 0000000000000301
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffffff8e7737c0
FS: 00007f8885e64880(0000) GS:ffff888269164000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0883746d58 CR3: 00000001362fe000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
count_matching_names kernel/locking/lockdep.c:881 [inline]
register_lock_class+0x26d/0x4c0 kernel/locking/lockdep.c:1347
__lock_acquire+0xa6/0x1c90 kernel/locking/lockdep.c:5115
lock_acquire kernel/locking/lockdep.c:5871 [inline]
lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5828
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162
complete_with_flags kernel/sched/completion.c:20 [inline]
complete+0x1d/0x200 kernel/sched/completion.c:47
transfer drivers/usb/gadget/udc/dummy_hcd.c:1523 [inline]
dummy_timer+0x1c53/0x3a20 drivers/usb/gadget/udc/dummy_hcd.c:1979
__run_hrtimer kernel/time/hrtimer.c:1761 [inline]
__hrtimer_run_queues+0x202/0xad0 kernel/time/hrtimer.c:1825
hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1842
handle_softirqs+0x205/0x8d0 kernel/softirq.c:579
__do_softirq kernel/softirq.c:613 [inline]
invoke_softirq kernel/softirq.c:453 [inline]
__irq_exit_rcu+0xfa/0x160 kernel/softirq.c:680
irq_exit_rcu+0x9/0x30 kernel/softirq.c:696
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1050
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:finish_task_switch.isra.0+0x1e9/0x9e0 kernel/sched/core.c:5264
Code: 0f 85 5f 07 00 00 8b 0d 09 e8 2b 09 85 c9 0f 85 b9 02 00 00 48 89 df e8 e5 a8 e2 05 e8 40 99 36 00 fb 65 48 8b 1d ff c7 1c 0b <48> 8d bb 50 15 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1
RSP: 0018:ffffc90001f7fac8 EFLAGS: 00000206
RAX: 000000000103ffd7 RBX: ffff888138a3d700 RCX: 0000000000000006
RDX: 0000000000000000 RSI: ffffffff88b03cf0 RDI: ffffffff8768fc40
RBP: ffffc90001f7fb08 R08: 0000000000000001 R09: 0000000000000001
R10: ffffffff8a7ad1d7 R11: 0000000000000001 R12: ffff888137098000
R13: 0000000000000000 R14: ffff8881f5838858 R15: ffff8881f5839398
context_switch kernel/sched/core.c:5399 [inline]
__schedule+0x1332/0x3b10 kernel/sched/core.c:6785
__schedule_loop kernel/sched/core.c:6863 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6878
synchronize_rcu_expedited+0x390/0x460 kernel/rcu/tree_exp.h:1013
input_close_device+0x231/0x290 drivers/input/input.c:664
evdev_close_device drivers/input/evdev.c:405 [inline]
evdev_release+0x357/0x420 drivers/input/evdev.c:447
__fput+0x3ff/0xb70 fs/file_table.c:465
fput_close_sync+0x118/0x260 fs/file_table.c:570
__do_sys_close fs/open.c:1589 [inline]
__se_sys_close fs/open.c:1574 [inline]
__x64_sys_close+0x8b/0x120 fs/open.c:1574
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x4b0 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8885f52407
Code: 48 89 fa 4c 89 df e8 38 aa 00 00 8b 93 08 03 00 00 59 5e 48 83 f8 fc 74 1a 5b c3 0f 1f 84 00 00 00 00 00 48 8b 44 24 10 0f 05 <5b> c3 0f 1f 80 00 00 00 00 83 e2 39 83 fa 08 75 de e8 23 ff ff ff
RSP: 002b:00007ffd39b48c50 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
RAX: ffffffffffffffda RBX: 00007f8885e64880 RCX: 00007f8885f52407
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000008
RBP: 00007f8885e646e8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000002
R13: 00000000000002c0 R14: 0000564d3d7d1f50 R15: 0000564d3d7d1f50
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:strcmp+0x5b/0xb0 lib/string.c:284
Code: fa 48 c1 e8 03 83 e2 07 42 0f b6 04 28 38 d0 7f 04 84 c0 75 58 48 89 f0 48 89 f2 0f b6 6b ff 4c 8d 66 01 48 c1 e8 03 83 e2 07 <42> 0f b6 04 28 38 d0 7f 04 84 c0 75 2c 41 3a 6c 24 ff 74 ae 19 c0
RSP: 0018:ffffc900000079b8 EFLAGS: 00010046
RAX: 0000000000000060 RBX: ffffffff876908c1 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000300 RDI: ffffffff876908c0
RBP: 0000000000000026 R08: 0000000000000001 R09: 0000000000000001
R10: ffff88811a8c800b R11: 0000000000000001 R12: 0000000000000301
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffffff8e7737c0
FS: 00007f8885e64880(0000) GS:ffff888269164000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0883746d58 CR3: 00000001362fe000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: fa cli
1: 48 c1 e8 03 shr $0x3,%rax
5: 83 e2 07 and $0x7,%edx
8: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax
d: 38 d0 cmp %dl,%al
f: 7f 04 jg 0x15
11: 84 c0 test %al,%al
13: 75 58 jne 0x6d
15: 48 89 f0 mov %rsi,%rax
18: 48 89 f2 mov %rsi,%rdx
1b: 0f b6 6b ff movzbl -0x1(%rbx),%ebp
1f: 4c 8d 66 01 lea 0x1(%rsi),%r12
23: 48 c1 e8 03 shr $0x3,%rax
27: 83 e2 07 and $0x7,%edx
* 2a: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction
2f: 38 d0 cmp %dl,%al
31: 7f 04 jg 0x37
33: 84 c0 test %al,%al
35: 75 2c jne 0x63
37: 41 3a 6c 24 ff cmp -0x1(%r12),%bpl
3c: 74 ae je 0xffffffec
3e: 19 c0 sbb %eax,%eax