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