general protection fault, probably for non-canonical address 0xdffffc0000000038: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000001c0-0x00000000000001c7]
CPU: 0 PID: 16 Comm: ksoftirqd/0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:__queue_work+0xa7/0x1020 kernel/workqueue.c:1725
Code: ee e8 ad 38 2f 00 85 ed 0f 85 db 0c 00 00 e8 f0 34 2f 00 48 89 1c 24 49 8d af c0 01 00 00 48 89 e8 48 c1 e8 03 48 89 44 24 48 <42> 0f b6 04 28 84 c0 0f 85 05 0d 00 00 8b 5d 00 89 de 81 e6 00 80
RSP: 0018:ffffc900001579d0 EFLAGS: 00010002
RAX: 0000000000000038 RBX: ffff88802e356c40 RCX: ffff88801be5da00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000000001c0 R08: ffff88802e356c47 R09: 1ffff11005c6ad88
R10: dffffc0000000000 R11: ffffed1005c6ad89 R12: 0000000000000008
R13: dffffc0000000000 R14: ffff88802e356c40 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000006ad000 CR3: 000000002e2a1000 CR4: 00000000003506f0
Call Trace:
<TASK>
queue_work_on+0x121/0x1e0 kernel/workqueue.c:1835
queue_work include/linux/workqueue.h:562 [inline]
iomap_dio_done fs/iomap/direct-io.c:222 [inline]
iomap_dio_bio_end_io+0x462/0x630 fs/iomap/direct-io.c:235
req_bio_endio block/blk-mq.c:786 [inline]
blk_update_request+0x597/0xe40 block/blk-mq.c:931
blk_mq_end_request+0x3e/0x70 block/blk-mq.c:1058
blk_complete_reqs block/blk-mq.c:1138 [inline]
blk_done_softirq+0x10b/0x160 block/blk-mq.c:1143
handle_softirqs+0x280/0x820 kernel/softirq.c:578
run_ksoftirqd+0x9c/0xf0 kernel/softirq.c:950
smpboot_thread_fn+0x635/0xa00 kernel/smpboot.c:164
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:__queue_work+0xa7/0x1020 kernel/workqueue.c:1725
Code: ee e8 ad 38 2f 00 85 ed 0f 85 db 0c 00 00 e8 f0 34 2f 00 48 89 1c 24 49 8d af c0 01 00 00 48 89 e8 48 c1 e8 03 48 89 44 24 48 <42> 0f b6 04 28 84 c0 0f 85 05 0d 00 00 8b 5d 00 89 de 81 e6 00 80
RSP: 0018:ffffc900001579d0 EFLAGS: 00010002
RAX: 0000000000000038 RBX: ffff88802e356c40 RCX: ffff88801be5da00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00000000000001c0 R08: ffff88802e356c47 R09: 1ffff11005c6ad88
R10: dffffc0000000000 R11: ffffed1005c6ad89 R12: 0000000000000008
R13: dffffc0000000000 R14: ffff88802e356c40 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000006ad000 CR3: 000000002e2a1000 CR4: 00000000003506f0
----------------
Code disassembly (best guess):
0: ee out %al,(%dx)
1: e8 ad 38 2f 00 call 0x2f38b3
6: 85 ed test %ebp,%ebp
8: 0f 85 db 0c 00 00 jne 0xce9
e: e8 f0 34 2f 00 call 0x2f3503
13: 48 89 1c 24 mov %rbx,(%rsp)
17: 49 8d af c0 01 00 00 lea 0x1c0(%r15),%rbp
1e: 48 89 e8 mov %rbp,%rax
21: 48 c1 e8 03 shr $0x3,%rax
25: 48 89 44 24 48 mov %rax,0x48(%rsp)
* 2a: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax <-- trapping instruction
2f: 84 c0 test %al,%al
31: 0f 85 05 0d 00 00 jne 0xd3c
37: 8b 5d 00 mov 0x0(%rbp),%ebx
3a: 89 de mov %ebx,%esi
3c: 81 .byte 0x81
3d: e6 00 out %al,$0x0
3f: 80 .byte 0x80