creative-sb0540 0003:041E:3100.009D: Could not get a key for main_code 9669
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: 6838 Comm: udevd Not tainted 6.15.0-rc1-syzkaller-00082-gf41f7b3d9daf #0 PREEMPT(voluntary) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:strcmp+0x5b/0xb0 lib/string.c:277
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:ffffc900000079b0 EFLAGS: 00010046
RAX: 0000000000000060 RBX: ffffffff87685b21 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000300 RDI: ffffffff87685b20
RBP: 0000000000000026 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: ffff88810b360020 R12: 0000000000000301
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffffff8e6e7d88
FS:  00007f68ca9fcc80(0000) GS:ffff8882691d3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0ebfcfcfe8 CR3: 000000011cbca000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 count_matching_names kernel/locking/lockdep.c:880 [inline]
 register_lock_class+0x26d/0x4c0 kernel/locking/lockdep.c:1345
 __lock_acquire+0x99/0x1ba0 kernel/locking/lockdep.c:5110
 lock_acquire kernel/locking/lockdep.c:5866 [inline]
 lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5823
 __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:1978
 __run_hrtimer kernel/time/hrtimer.c:1761 [inline]
 __hrtimer_run_queues+0x1ff/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:1049 [inline]
 sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x62/0x350 kernel/locking/lockdep.c:5870
Code: 64 0b 0b 83 f8 07 0f 87 bc 02 00 00 89 c0 48 0f a3 05 d2 02 1f 09 0f 82 74 02 00 00 8b 35 8a 0e 1f 09 85 f6 0f 85 8d 00 00 00 <48> 8b 44 24 30 65 48 2b 05 29 64 0b 0b 0f 85 c7 02 00 00 48 83 c4
RSP: 0018:ffffc90001cdf800 EFLAGS: 00000206
RAX: 0000000000000046 RBX: ffff88811c440c90 RCX: ffffffff8c6a3a40
RDX: 0000000000000000 RSI: ffffffff88ab3ea6 RDI: ffffffff87684ea0
RBP: 0000000000000000 R08: 5de30c0a81becc72 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline]
 _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154
 spin_lock include/linux/spinlock.h:351 [inline]
 fast_dput fs/dcache.c:818 [inline]
 dput.part.0+0x766/0x9b0 fs/dcache.c:896
 dput+0x1f/0x30 fs/dcache.c:892
 step_into+0xda9/0x2270 fs/namei.c:1981
 walk_component+0xfc/0x5b0 fs/namei.c:2134
 link_path_walk.part.0.constprop.0+0x682/0xd60 fs/namei.c:2493
 link_path_walk fs/namei.c:2423 [inline]
 path_lookupat+0x91/0x780 fs/namei.c:2649
 filename_lookup+0x224/0x5f0 fs/namei.c:2679
 vfs_statx+0xf8/0x210 fs/stat.c:346
 vfs_fstatat+0x7b/0xf0 fs/stat.c:368
 __do_sys_newfstatat+0xa1/0x130 fs/stat.c:532
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f68cab275f4
Code: 64 c7 00 09 00 00 00 83 c8 ff c3 48 89 f2 b9 00 01 00 00 48 89 fe bf 9c ff ff ff e9 00 00 00 00 41 89 ca b8 06 01 00 00 0f 05 <45> 31 c0 3d 00 f0 ff ff 76 10 48 8b 15 03 a8 0d 00 f7 d8 41 83 c8
RSP: 002b:00007ffe4a8d89a8 EFLAGS: 00000206 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 0000561f17fb5e60 RCX: 00007f68cab275f4
RDX: 00007ffe4a8d89b8 RSI: 00007ffe4a8d8a48 RDI: 00000000ffffff9c
RBP: 0000561f17ee8bf5 R08: 0000561f17ee8bf5 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 0000000000000000
R13: 0000561f17fb5f50 R14: 00007ffe4a8d8a48 R15: 0000561ef3910a04
 </TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:strcmp+0x5b/0xb0 lib/string.c:277
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:ffffc900000079b0 EFLAGS: 00010046
RAX: 0000000000000060 RBX: ffffffff87685b21 RCX: 0000000000000001
RDX: 0000000000000000 RSI: 0000000000000300 RDI: ffffffff87685b20
RBP: 0000000000000026 R08: 0000000000000001 R09: 0000000000000001
R10: 0000000000000000 R11: ffff88810b360020 R12: 0000000000000301
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffffff8e6e7d88
FS:  00007f68ca9fcc80(0000) GS:ffff8882691d3000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0ebfcfcfe8 CR3: 000000011cbca000 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