------------[ cut here ]------------
WARNING: CPU: 0 PID: 15290 at kernel/workqueue.c:1453 __queue_work+0xc04/0xd50 kernel/workqueue.c:1453
Modules linked in:
CPU: 0 PID: 15290 Comm: syz.6.2769 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:__queue_work+0xc04/0xd50 kernel/workqueue.c:1453
Code: fc ff ff 48 8b 4c 24 08 80 e1 07 80 c1 03 38 c1 0f 8c 13 fd ff ff 48 8b 7c 24 08 e8 b6 48 70 00 e9 04 fd ff ff e8 ec 29 2b 00 <0f> 0b 48 83 c4 50 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 d6 29 2b 00
RSP: 0018:ffffc90000007b18 EFLAGS: 00010046
RAX: ffffffff814e0aa4 RBX: 0000000000010000 RCX: ffff88802baed940
RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8d89f02f R09: 1ffffffff1b13e05
R10: dffffc0000000000 R11: fffffbfff1b13e06 R12: ffff888044546180
R13: ffff888060b0f9c0 R14: ffff888060b0f800 R15: 0000000000000008
FS: 00007f075b36d6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1f5ce7f4c0 CR3: 0000000032640000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
<IRQ>
call_timer_fn+0x17b/0x540 kernel/time/timer.c:1648
expire_timers kernel/time/timer.c:1694 [inline]
__run_timers+0x569/0x800 kernel/time/timer.c:1970
run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1983
handle_softirqs+0x339/0x830 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:lock_release+0x58/0x8a0 kernel/locking/lockdep.c:5631
Code: 24 c0 00 00 00 49 bd 00 00 00 00 00 fc ff df 48 c7 44 24 60 b3 8a b5 41 48 c7 44 24 68 3c 85 c2 8b 48 c7 44 24 70 00 93 5d 81 <4c> 8d 64 24 60 49 c1 ec 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4b 89 04
RSP: 0018:ffffc9000341f640 EFLAGS: 00000282
RAX: b326d5d4177f9100 RBX: ffffffff966cf340 RCX: 0000000000080000
RDX: ffffc90012e48000 RSI: ffffffff8863e975 RDI: ffffffff8c31eb20
RBP: ffffc9000341f750 R08: dffffc0000000000 R09: 1ffffffff203aa18
R10: dffffc0000000000 R11: fffffbfff203aa19 R12: 000000000006a261
R13: dffffc0000000000 R14: ffff88814cb51308 R15: ffffffff8d618708
rcu_read_unlock include/linux/rcupdate.h:773 [inline]
inet_twsk_purge+0x7a7/0x840 net/ipv4/inet_timewait_sock.c:309
ops_exit_list net/core/net_namespace.c:177 [inline]
setup_net+0x844/0xa10 net/core/net_namespace.c:365
copy_net_ns+0x348/0x5b0 net/core/net_namespace.c:503
create_new_namespaces+0x3d3/0x6f0 kernel/nsproxy.c:110
copy_namespaces+0x37d/0x3e0 kernel/nsproxy.c:178
copy_process+0x1834/0x3e20 kernel/fork.c:2293
kernel_clone+0x23f/0x990 kernel/fork.c:2679
__do_sys_clone kernel/fork.c:2796 [inline]
__se_sys_clone kernel/fork.c:2780 [inline]
__x64_sys_clone+0x19a/0x210 kernel/fork.c:2780
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f075d113dd9
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f075b36cfd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f075d38cfa0 RCX: 00007f075d113dd9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040800000
RBP: 00007f075d1a9d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f075d38d038 R14: 00007f075d38cfa0 R15: 00007ffc1aaec038
</TASK>
----------------
Code disassembly (best guess):
0: 24 c0 and $0xc0,%al
2: 00 00 add %al,(%rax)
4: 00 49 bd add %cl,-0x43(%rcx)
7: 00 00 add %al,(%rax)
9: 00 00 add %al,(%rax)
b: 00 fc add %bh,%ah
d: ff lcall (bad)
e: df 48 c7 fisttps -0x39(%rax)
11: 44 24 60 rex.R and $0x60,%al
14: b3 8a mov $0x8a,%bl
16: b5 41 mov $0x41,%ch
18: 48 c7 44 24 68 3c 85 movq $0xffffffff8bc2853c,0x68(%rsp)
1f: c2 8b
21: 48 c7 44 24 70 00 93 movq $0xffffffff815d9300,0x70(%rsp)
28: 5d 81
* 2a: 4c 8d 64 24 60 lea 0x60(%rsp),%r12 <-- trapping instruction
2f: 49 c1 ec 03 shr $0x3,%r12
33: 48 b8 f1 f1 f1 f1 f8 movabs $0xf2f2f2f8f1f1f1f1,%rax
3a: f2 f2 f2
3d: 4b rex.WXB
3e: 89 .byte 0x89
3f: 04 .byte 0x4