------------[ cut here ]------------ WARNING: CPU: 2 PID: 10457 at kernel/workqueue.c:2257 __queue_work+0xc3a/0x1080 kernel/workqueue.c:2256 Modules linked in: CPU: 2 UID: 0 PID: 10457 Comm: syz.0.1133 Not tainted 6.13.0-rc3-syzkaller-00136-g8faabc041a00 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:__queue_work+0xc3a/0x1080 kernel/workqueue.c:2256 Code: 07 83 c0 03 38 d0 7c 09 84 d2 74 05 e8 1f e7 98 00 8b 5b 2c 31 ff 83 e3 20 89 de e8 10 7f 36 00 85 db 75 60 e8 c7 7c 36 00 90 <0f> 0b 90 e9 f9 f7 ff ff e8 b9 7c 36 00 90 0f 0b 90 e9 7e f6 ff ff RSP: 0018:ffffc90000548be8 EFLAGS: 00010046 RAX: 0000000000000000 RBX: 0000000000000100 RCX: ffffffff8162d1d1 RDX: ffff888021f8c880 RSI: ffffffff8162d229 RDI: 0000000000000005 RBP: ffff88804ef30930 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000100 R11: 0000000000000001 R12: 1ffff920000a918f R13: 0000000000000001 R14: 0000000000000100 R15: ffff88804b94b000 FS: 0000000000000000(0000) GS:ffff88802b600000(0063) knlGS:00000000f5086b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f73f6188 CR3: 0000000060d8e000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: call_timer_fn+0x1a0/0x610 kernel/time/timer.c:1793 expire_timers kernel/time/timer.c:1839 [inline] __run_timers+0x56a/0x930 kernel/time/timer.c:2418 __run_timer_base kernel/time/timer.c:2430 [inline] __run_timer_base kernel/time/timer.c:2422 [inline] run_timer_base+0x114/0x190 kernel/time/timer.c:2439 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2449 handle_softirqs+0x213/0x8f0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0x109/0x170 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+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:lockdep_unregister_key+0x1b2/0x2b0 kernel/locking/lockdep.c:6593 Code: 54 fd ff ff 48 89 df e8 cc c3 ff ff 89 c3 e8 05 d9 ff ff 9c 58 f6 c4 02 0f 85 92 00 00 00 41 f7 c5 00 02 00 00 74 01 fb 84 db <75> 4f 5b 5d 41 5c 41 5d 41 5e 41 5f e9 fd 8b 0a 00 48 c7 c0 14 15 RSP: 0018:ffffc9000758f018 EFLAGS: 00000246 RAX: 0000000000000046 RBX: 0000000000000000 RCX: 0000000000000001 RDX: dffffc0000000000 RSI: ffffffff8b4cd440 RDI: ffffffff8bb16ec0 RBP: ffff888044b0b298 R08: ffffffff9335fcea R09: 000000000001c9b5 R10: ffffffff9697899f R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000246 R14: ffffffff96b4d7c0 R15: ffff888044b0b2a0 __qdisc_destroy+0x11a/0x4b0 net/sched/sch_generic.c:1085 qdisc_put+0xab/0xe0 net/sched/sch_generic.c:1111 shutdown_scheduler_queue+0xa5/0x160 net/sched/sch_generic.c:1164 netdev_for_each_tx_queue include/linux/netdevice.h:2562 [inline] dev_shutdown+0xad/0x430 net/sched/sch_generic.c:1496 unregister_netdevice_many_notify+0x632/0x1e60 net/core/dev.c:11515 rtnl_delete_link net/core/rtnetlink.c:3476 [inline] rtnl_dellink+0x3d7/0xaa0 net/core/rtnetlink.c:3518 rtnetlink_rcv_msg+0x95b/0xea0 net/core/rtnetlink.c:6922 netlink_rcv_skb+0x165/0x410 net/netlink/af_netlink.c:2542 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline] netlink_unicast+0x53c/0x7f0 net/netlink/af_netlink.c:1347 netlink_sendmsg+0x8b8/0xd70 net/netlink/af_netlink.c:1891 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg net/socket.c:726 [inline] ____sys_sendmsg+0x9ae/0xb40 net/socket.c:2583 ___sys_sendmsg+0x135/0x1e0 net/socket.c:2637 __sys_sendmsg+0x16e/0x220 net/socket.c:2669 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x73/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7f38579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f508655c EFLAGS: 00000296 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess), 4 bytes skipped: 0: 48 89 df mov %rbx,%rdi 3: e8 cc c3 ff ff call 0xffffc3d4 8: 89 c3 mov %eax,%ebx a: e8 05 d9 ff ff call 0xffffd914 f: 9c pushf 10: 58 pop %rax 11: f6 c4 02 test $0x2,%ah 14: 0f 85 92 00 00 00 jne 0xac 1a: 41 f7 c5 00 02 00 00 test $0x200,%r13d 21: 74 01 je 0x24 23: fb sti 24: 84 db test %bl,%bl * 26: 75 4f jne 0x77 <-- trapping instruction 28: 5b pop %rbx 29: 5d pop %rbp 2a: 41 5c pop %r12 2c: 41 5d pop %r13 2e: 41 5e pop %r14 30: 41 5f pop %r15 32: e9 fd 8b 0a 00 jmp 0xa8c34 37: 48 rex.W 38: c7 .byte 0xc7 39: c0 .byte 0xc0 3a: 14 15 adc $0x15,%al