general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 PID: 5859 Comm: kworker/0:4 Not tainted 6.6.95-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
Workqueue: do_submit_urb (events)
RIP: 0010:process_one_work kernel/workqueue.c:2575 [inline]
RIP: 0010:process_scheduled_works+0x5aa/0x15b0 kernel/workqueue.c:2711
Code: 89 ac 24 10 01 00 00 44 89 e8 c1 e8 05 83 e0 0f 89 03 48 8b 44 24 38 48 8d 58 08 48 89 d8 48 c1 e8 03 48 89 84 24 80 00 00 00 <42> 80 3c 20 00 74 08 48 89 df e8 27 95 86 00 48 89 5c 24 48 4c 8b
RSP: 0018:ffffc90003307bc0 EFLAGS: 00010002
RAX: 0000000000000001 RBX: 0000000000000008 RCX: 0000001fffffffc0
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 00000000ffffffff
RBP: ffffc90003307da8 R08: ffffffff97149f73 R09: 1ffffffff2e293ee
R10: dffffc0000000000 R11: fffffbfff2e293ef R12: dffffc0000000000
R13: 0000001fffffffc0 R14: ffff888072668570 R15: ffff888025a07f18
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1b4e5c30a0 CR3: 000000002e4e5000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
worker_thread+0xa55/0xfc0 kernel/workqueue.c:2792
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:process_one_work kernel/workqueue.c:2575 [inline]
RIP: 0010:process_scheduled_works+0x5aa/0x15b0 kernel/workqueue.c:2711
Code: 89 ac 24 10 01 00 00 44 89 e8 c1 e8 05 83 e0 0f 89 03 48 8b 44 24 38 48 8d 58 08 48 89 d8 48 c1 e8 03 48 89 84 24 80 00 00 00 <42> 80 3c 20 00 74 08 48 89 df e8 27 95 86 00 48 89 5c 24 48 4c 8b
RSP: 0018:ffffc90003307bc0 EFLAGS: 00010002
RAX: 0000000000000001 RBX: 0000000000000008 RCX: 0000001fffffffc0
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 00000000ffffffff
RBP: ffffc90003307da8 R08: ffffffff97149f73 R09: 1ffffffff2e293ee
R10: dffffc0000000000 R11: fffffbfff2e293ef R12: dffffc0000000000
R13: 0000001fffffffc0 R14: ffff888072668570 R15: ffff888025a07f18
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1b4e5c30a0 CR3: 000000002e4e5000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 89 ac 24 10 01 00 00 mov %ebp,0x110(%rsp)
7: 44 89 e8 mov %r13d,%eax
a: c1 e8 05 shr $0x5,%eax
d: 83 e0 0f and $0xf,%eax
10: 89 03 mov %eax,(%rbx)
12: 48 8b 44 24 38 mov 0x38(%rsp),%rax
17: 48 8d 58 08 lea 0x8(%rax),%rbx
1b: 48 89 d8 mov %rbx,%rax
1e: 48 c1 e8 03 shr $0x3,%rax
22: 48 89 84 24 80 00 00 mov %rax,0x80(%rsp)
29: 00
* 2a: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) <-- trapping instruction
2f: 74 08 je 0x39
31: 48 89 df mov %rbx,%rdi
34: e8 27 95 86 00 call 0x869560
39: 48 89 5c 24 48 mov %rbx,0x48(%rsp)
3e: 4c rex.WR
3f: 8b .byte 0x8b