------------[ cut here ]------------ WARNING: CPU: 0 PID: 6848 at kernel/workqueue.c:1441 __queue_work+0xddc/0xf90 Modules linked in: CPU: 0 PID: 6848 Comm: syz-executor Not tainted 6.1.131-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 RIP: 0010:__queue_work+0xddc/0xf90 kernel/workqueue.c:1441 Code: 8b 3c 24 e8 66 55 88 00 e9 d9 fc ff ff e8 2c f4 30 00 89 ee 48 c7 c7 a0 c5 1d 8d e8 5e 42 15 03 e9 1e fc ff ff e8 14 f4 30 00 <0f> 0b 48 83 c4 50 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 fe f3 30 00 RSP: 0018:ffffc90000007af8 EFLAGS: 00010046 RAX: ffffffff8159b5ac RBX: 00000000000b0012 RCX: ffff88801a318000 RDX: 0000000000000100 RSI: 0000000000000100 RDI: 0000000000000000 RBP: 0000000000010000 R08: ffffffff815aa245 R09: fffffbfff1d4168e R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: dffffc0000000000 R14: 0000000000000008 R15: ffff888078099800 FS: 0000555562395500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd1c1ba6038 CR3: 0000000079f8b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: call_timer_fn+0x1ad/0x6b0 kernel/time/timer.c:1504 expire_timers kernel/time/timer.c:1544 [inline] __run_timers+0x6a8/0x890 kernel/time/timer.c:1820 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1833 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:661 irq_exit_rcu+0x5/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:unwind_next_frame+0x18c6/0x2220 arch/x86/kernel/unwind_orc.c:605 Code: 48 89 d8 48 c1 e8 03 0f b6 04 28 84 c0 0f 85 96 08 00 00 4c 89 f0 48 c1 e8 03 0f b6 04 28 84 c0 0f 85 a2 08 00 00 48 0f bf 03 <48> 8b 74 24 08 48 01 c6 49 8d 54 24 40 4c 89 e7 e8 45 09 00 00 84 RSP: 0018:ffffc90003237500 EFLAGS: 00000246 RAX: fffffffffffffff0 RBX: ffffffff8f209b64 RCX: 0000000000000000 RDX: 0000000000000010 RSI: 0000000000000001 RDI: ffffc90003237640 RBP: dffffc0000000000 R08: dffffc0000000000 R09: ffffc90003237630 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffc900032375e0 R13: ffffffff8f209b66 R14: ffffffff8f209b65 R15: ffffc90003237630 arch_stack_walk+0x10d/0x140 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 save_stack+0xf6/0x1e0 mm/page_owner.c:127 __set_page_owner+0x1a/0x60 mm/page_owner.c:190 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x18d/0x1b0 mm/page_alloc.c:2532 prep_new_page mm/page_alloc.c:2539 [inline] get_page_from_freelist+0x3731/0x38d0 mm/page_alloc.c:4328 __alloc_pages+0x28d/0x770 mm/page_alloc.c:5606 vm_area_alloc_pages mm/vmalloc.c:2994 [inline] __vmalloc_area_node mm/vmalloc.c:3063 [inline] __vmalloc_node_range+0x9b3/0x14b0 mm/vmalloc.c:3235 vmalloc_user+0x70/0x80 mm/vmalloc.c:3389 kcov_ioctl+0x55/0x630 kernel/kcov.c:713 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xf1/0x160 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fd1c198cd6b Code: 00 48 89 44 24 18 31 c0 48 8d 44 24 60 c7 04 24 10 00 00 00 48 89 44 24 08 48 8d 44 24 20 48 89 44 24 10 b8 10 00 00 00 0f 05 <89> c2 3d 00 f0 ff ff 77 1c 48 8b 44 24 18 64 48 2b 04 25 28 00 00 RSP: 002b:00007fff8d30ba90 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000080000 RCX: 00007fd1c198cd6b RDX: 0000000000080000 RSI: ffffffff80086301 RDI: 00000000000000dc RBP: 00007fd1c1ba63b8 R08: 00000000000000da R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000003 R14: 0000000000000009 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: 48 89 d8 mov %rbx,%rax 3: 48 c1 e8 03 shr $0x3,%rax 7: 0f b6 04 28 movzbl (%rax,%rbp,1),%eax b: 84 c0 test %al,%al d: 0f 85 96 08 00 00 jne 0x8a9 13: 4c 89 f0 mov %r14,%rax 16: 48 c1 e8 03 shr $0x3,%rax 1a: 0f b6 04 28 movzbl (%rax,%rbp,1),%eax 1e: 84 c0 test %al,%al 20: 0f 85 a2 08 00 00 jne 0x8c8 26: 48 0f bf 03 movswq (%rbx),%rax * 2a: 48 8b 74 24 08 mov 0x8(%rsp),%rsi <-- trapping instruction 2f: 48 01 c6 add %rax,%rsi 32: 49 8d 54 24 40 lea 0x40(%r12),%rdx 37: 4c 89 e7 mov %r12,%rdi 3a: e8 45 09 00 00 call 0x984 3f: 84 .byte 0x84