------------[ cut here ]------------ WARNING: CPU: 1 PID: 47 at kernel/workqueue.c:2257 __queue_work+0xcd3/0xf50 kernel/workqueue.c:2256 Modules linked in: CPU: 1 UID: 0 PID: 47 Comm: kworker/1:1 Not tainted 6.13.0-rc2-syzkaller-00438-g9163b05eca1d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 Workqueue: events free_ipc RIP: 0010:__queue_work+0xcd3/0xf50 kernel/workqueue.c:2256 Code: ff e8 71 e8 37 00 90 0f 0b 90 e9 b2 fe ff ff e8 63 e8 37 00 eb 13 e8 5c e8 37 00 eb 0c e8 55 e8 37 00 eb 05 e8 4e e8 37 00 90 <0f> 0b 90 48 83 c4 60 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc RSP: 0018:ffffc90000a18b08 EFLAGS: 00010046 RAX: ffffffff816775dd RBX: 0000000000000100 RCX: ffff888020ea9e00 RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000 RBP: 0000000000010000 R08: ffffffff81676a08 R09: 1ffffffff203419e R10: dffffc0000000000 R11: ffffffff81677e10 R12: ffff88805bb3d000 R13: ffff88805bb3d1c0 R14: dffffc0000000000 R15: 0000000000000008 FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fff87561d28 CR3: 0000000029ca6000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: call_timer_fn+0x187/0x650 kernel/time/timer.c:1793 expire_timers kernel/time/timer.c:1839 [inline] __run_timers kernel/time/timer.c:2418 [inline] __run_timer_base+0x695/0x8e0 kernel/time/timer.c:2430 run_timer_base kernel/time/timer.c:2439 [inline] run_timer_softirq+0xb7/0x170 kernel/time/timer.c:2449 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:process_one_work kernel/workqueue.c:3235 [inline] RIP: 0010:process_scheduled_works+0xb59/0x1840 kernel/workqueue.c:3310 Code: f7 06 00 00 e8 e8 7d 36 00 48 8b 44 24 20 48 8d 98 b0 00 00 00 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 48 89 df e8 1d df 9c 00 48 ff 03 48 8d bc 24 40 01 00 00 4c RSP: 0018:ffffc90000b77bc0 EFLAGS: 00000246 RAX: 1ffff11003592896 RBX: ffff88801ac944b0 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: ffffffff8c5f9760 RDI: ffffffff8c5f9720 RBP: ffffc90000b77dc0 R08: ffffffff8168e020 R09: 1ffffffff203419e R10: dffffc0000000000 R11: fffffbfff203419f R12: ffffffff8efc7840 R13: ffffffff8168de96 R14: ffff88801ac94408 R15: 1ffff11003f555aa worker_thread+0x870/0xd30 kernel/workqueue.c:3391 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 ---------------- Code disassembly (best guess): 0: f7 06 00 00 e8 e8 testl $0xe8e80000,(%rsi) 6: 7d 36 jge 0x3e 8: 00 48 8b add %cl,-0x75(%rax) b: 44 24 20 rex.R and $0x20,%al e: 48 8d 98 b0 00 00 00 lea 0xb0(%rax),%rbx 15: 48 89 d8 mov %rbx,%rax 18: 48 c1 e8 03 shr $0x3,%rax 1c: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 23: fc ff df 26: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) * 2a: 74 08 je 0x34 <-- trapping instruction 2c: 48 89 df mov %rbx,%rdi 2f: e8 1d df 9c 00 call 0x9cdf51 34: 48 ff 03 incq (%rbx) 37: 48 8d bc 24 40 01 00 lea 0x140(%rsp),%rdi 3e: 00 3f: 4c rex.WR