general protection fault, probably for non-canonical address 0xdffffc0000000040: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000200-0x0000000000000207]
CPU: 1 PID: 689 Comm: kworker/1:2 Not tainted 6.7.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
Workqueue: usb_hub_wq hub_event
RIP: 0010:strcmp+0x5b/0xb0 lib/string.c:282
Code: fa 48 c1 e8 03 83 e2 07 42 0f b6 04 28 38 d0 7f 04 84 c0 75 50 0f b6 6b ff 4c 8d 66 01 48 89 f0 48 89 f2 48 c1 e8 03 83 e2 07 <42> 0f b6 04 28 38 d0 7f 04 84 c0 75 24 41 3a 6c 24 ff 74 ae 19 c0
RSP: 0018:ffffc900001986c8 EFLAGS: 00010046
RAX: 0000000000000040 RBX: ffffffff86a696c1 RCX: ffffffff8b769100
RDX: 0000000000000000 RSI: 0000000000000200 RDI: ffffffff86a696c0
RBP: 0000000000000066 R08: ffffffff8b769110 R09: dffffc0000000000
R10: ffffffff8b769100 R11: 0000000000000100 R12: 0000000000000201
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000200
FS: 0000000000000000(0000) GS:ffff8881f6700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe201953070 CR3: 000000013b852000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
count_matching_names kernel/locking/lockdep.c:873 [inline]
register_lock_class+0x6f1/0x1320 kernel/locking/lockdep.c:1332
__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
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0x3a/0x50 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:1515 [inline]
dummy_timer+0x1271/0x35f0 drivers/usb/gadget/udc/dummy_hcd.c:1971
call_timer_fn+0x193/0x580 kernel/time/timer.c:1700
expire_timers kernel/time/timer.c:1751 [inline]
__run_timers+0x764/0xb10 kernel/time/timer.c:2022
run_timer_softirq+0x58/0xd0 kernel/time/timer.c:2035
__do_softirq+0x20a/0x94b kernel/softirq.c:553
invoke_softirq kernel/softirq.c:427 [inline]
__irq_exit_rcu kernel/softirq.c:632 [inline]
irq_exit_rcu+0xa7/0x110 kernel/softirq.c:644
sysvec_apic_timer_interrupt+0x8e/0xb0 arch/x86/kernel/apic/apic.c:1076
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:console_flush_all+0xa0c/0xd50 kernel/printk/printk.c:2973
Code: e8 b9 5b 23 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 de e8 17 a1 1c 00 48 85 db 0f 85 74 01 00 00 e8 79 a5 1c 00 fb 48 8b 04 24 <4c> 89 fa 83 e2 07 0f b6 00 38 d0 7f 08 84 c0 0f 85 4b 02 00 00 41
RSP: 0018:ffffc90001baf298 EFLAGS: 00000283
RAX: fffff52000375e7a RBX: 0000000000000000 RCX: ffffc9000c14c000
RDX: 0000000000040000 RSI: ffffffff81315367 RDI: 0000000000000007
RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000000
R10: 0000000000000000 R11: 205d393836542020 R12: 0000000000000000
R13: ffffffff88356f98 R14: ffffffff88356f40 R15: ffffc90001baf3d0
console_unlock+0x10c/0x260 kernel/printk/printk.c:3036
vprintk_emit+0x17f/0x5f0 kernel/printk/printk.c:2303
dev_vprintk_emit drivers/base/core.c:4850 [inline]
dev_printk_emit+0xfb/0x140 drivers/base/core.c:4861
__dev_printk+0xf5/0x270 drivers/base/core.c:4873
_dev_notice+0xe5/0x120 drivers/base/core.c:4918
usb_parse_interface drivers/usb/core/config.c:593 [inline]
usb_parse_configuration drivers/usb/core/config.c:795 [inline]
usb_get_configuration+0x2b49/0x5640 drivers/usb/core/config.c:944
usb_enumerate_device drivers/usb/core/hub.c:2431 [inline]
usb_new_device+0x1173/0x19f0 drivers/usb/core/hub.c:2569
hub_port_connect drivers/usb/core/hub.c:5463 [inline]
hub_port_connect_change drivers/usb/core/hub.c:5603 [inline]
port_event drivers/usb/core/hub.c:5763 [inline]
hub_event+0x2e62/0x4f40 drivers/usb/core/hub.c:5845
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
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:strcmp+0x5b/0xb0 lib/string.c:282
Code: fa 48 c1 e8 03 83 e2 07 42 0f b6 04 28 38 d0 7f 04 84 c0 75 50 0f b6 6b ff 4c 8d 66 01 48 89 f0 48 89 f2 48 c1 e8 03 83 e2 07 <42> 0f b6 04 28 38 d0 7f 04 84 c0 75 24 41 3a 6c 24 ff 74 ae 19 c0
RSP: 0018:ffffc900001986c8 EFLAGS: 00010046
RAX: 0000000000000040 RBX: ffffffff86a696c1 RCX: ffffffff8b769100
RDX: 0000000000000000 RSI: 0000000000000200 RDI: ffffffff86a696c0
RBP: 0000000000000066 R08: ffffffff8b769110 R09: dffffc0000000000
R10: ffffffff8b769100 R11: 0000000000000100 R12: 0000000000000201
R13: dffffc0000000000 R14: 0000000000000000 R15: 0000000000000200
FS: 0000000000000000(0000) GS:ffff8881f6700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe201953070 CR3: 000000013b852000 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 50 jne 0x65
15: 0f b6 6b ff movzbl -0x1(%rbx),%ebp
19: 4c 8d 66 01 lea 0x1(%rsi),%r12
1d: 48 89 f0 mov %rsi,%rax
20: 48 89 f2 mov %rsi,%rdx
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 24 jne 0x5b
37: 41 3a 6c 24 ff cmp -0x1(%r12),%bpl
3c: 74 ae je 0xffffffec
3e: 19 c0 sbb %eax,%eax