------------[ cut here ]------------ workqueue: cannot queue rtl_ips_nic_off_wq_callback on wq rtl92c_usb WARNING: CPU: 1 PID: 9695 at kernel/workqueue.c:2257 __queue_work+0xc9c/0x10f0 kernel/workqueue.c:2256 Modules linked in: CPU: 1 UID: 0 PID: 9695 Comm: sed Not tainted 6.15.0-rc4-syzkaller-g615dca38c2ea #0 PREEMPT(voluntary) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:__queue_work+0xc9c/0x10f0 kernel/workqueue.c:2256 Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 28 04 00 00 48 8b 75 18 4c 89 f2 48 c7 c7 80 2d 47 87 e8 55 4c f7 ff 90 <0f> 0b 90 90 e9 96 f7 ff ff e8 96 ce 33 00 90 0f 0b 90 e9 1b f6 ff RSP: 0018:ffffc900001a8be8 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff813feaa8 RDX: ffff888107b68000 RSI: ffffffff813feab5 RDI: 0000000000000001 RBP: ffff88811cb43768 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: fffffffffffd0cb0 R12: 1ffff9200003518f R13: 0000000000000100 R14: ffff888122828978 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff8882692c4000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f196d4e7440 CR3: 0000000008ea4000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: call_timer_fn+0x197/0x620 kernel/time/timer.c:1789 expire_timers kernel/time/timer.c:1835 [inline] __run_timers+0x569/0x960 kernel/time/timer.c:2414 __run_timer_base kernel/time/timer.c:2426 [inline] __run_timer_base kernel/time/timer.c:2418 [inline] run_timer_base+0x114/0x190 kernel/time/timer.c:2435 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2445 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:1049 [inline] sysvec_apic_timer_interrupt+0x90/0xb0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lock_release+0x183/0x2f0 kernel/locking/lockdep.c:5891 Code: 0f c1 05 a8 75 0c 0b 83 f8 01 0f 85 1d 01 00 00 9c 58 f6 c4 02 0f 85 08 01 00 00 41 f7 c5 00 02 00 00 74 01 fb 48 8b 44 24 10 <65> 48 2b 05 fd 39 0c 0b 0f 85 58 01 00 00 48 83 c4 18 5b 41 5c 41 RSP: 0018:ffffc90003a17730 EFLAGS: 00000206 RAX: 83e175f0706b8b00 RBX: ffffffff890c2880 RCX: ffffc90003a1773c RDX: 0000000000000001 RSI: ffffffff88ab8a4b RDI: ffffffff876851a0 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 000000000000c7b1 R12: ffffffff813a6834 R13: 0000000000000206 R14: ffff888107b68000 R15: 0000000000000002 rcu_lock_release include/linux/rcupdate.h:341 [inline] rcu_read_unlock include/linux/rcupdate.h:871 [inline] class_rcu_destructor include/linux/rcupdate.h:1155 [inline] unwind_next_frame+0x3f9/0x20a0 arch/x86/kernel/unwind_orc.c:479 arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122 kasan_save_stack+0x33/0x60 mm/kasan/common.c:47 kasan_record_aux_stack+0x9b/0xb0 mm/kasan/generic.c:548 __call_rcu_common.constprop.0+0x9a/0x9f0 kernel/rcu/tree.c:3082 slab_free_hook mm/slub.c:2362 [inline] slab_free mm/slub.c:4656 [inline] kmem_cache_free+0x154/0x470 mm/slub.c:4758 exit_mmap+0x511/0xb90 mm/mmap.c:1309 __mmput kernel/fork.c:1379 [inline] mmput+0xdb/0x430 kernel/fork.c:1401 exit_mm kernel/exit.c:589 [inline] do_exit+0x9d1/0x2c30 kernel/exit.c:940 do_group_exit+0xd3/0x2a0 kernel/exit.c:1102 __do_sys_exit_group kernel/exit.c:1113 [inline] __se_sys_exit_group kernel/exit.c:1111 [inline] __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1111 x64_sys_call+0x1530/0x1730 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x260 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f196d5a5a90 Code: Unable to access opcode bytes at 0x7f196d5a5a66. RSP: 002b:00007ffcdc4def48 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f196d696860 RCX: 00007f196d5a5a90 RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00007f196d696860 R08: 0000000000000002 R09: 719b4e3dc8c48a23 R10: 00007ffcdc4dee00 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f196d69a658 R15: 0000000000000001 ---------------- Code disassembly (best guess): 0: 0f c1 05 a8 75 0c 0b xadd %eax,0xb0c75a8(%rip) # 0xb0c75af 7: 83 f8 01 cmp $0x1,%eax a: 0f 85 1d 01 00 00 jne 0x12d 10: 9c pushf 11: 58 pop %rax 12: f6 c4 02 test $0x2,%ah 15: 0f 85 08 01 00 00 jne 0x123 1b: 41 f7 c5 00 02 00 00 test $0x200,%r13d 22: 74 01 je 0x25 24: fb sti 25: 48 8b 44 24 10 mov 0x10(%rsp),%rax * 2a: 65 48 2b 05 fd 39 0c sub %gs:0xb0c39fd(%rip),%rax # 0xb0c3a2f <-- trapping instruction 31: 0b 32: 0f 85 58 01 00 00 jne 0x190 38: 48 83 c4 18 add $0x18,%rsp 3c: 5b pop %rbx 3d: 41 5c pop %r12 3f: 41 rex.B