------------[ cut here ]------------ workqueue: cannot queue hci_cmd_timeout on wq hci3 WARNING: CPU: 1 PID: 29579 at kernel/workqueue.c:2255 __queue_work+0xd03/0x1160 kernel/workqueue.c:2254 Modules linked in: CPU: 1 UID: 0 PID: 29579 Comm: syz.0.6660 Not tainted syzkaller #0 PREEMPT(full) 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+0xd03/0x1160 kernel/workqueue.c:2254 Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 4b 04 00 00 48 8b 75 18 4c 89 fa 48 c7 c7 e0 01 ac 8b e8 de 4b f7 ff 90 <0f> 0b 90 90 e9 2f f7 ff ff e8 8f 54 38 00 90 0f 0b 90 e9 b4 f5 ff RSP: 0018:ffffc90000590be8 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff817a02f8 RDX: ffff8880274e4880 RSI: ffffffff817a0305 RDI: 0000000000000001 RBP: ffff888024320970 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff920000b218f R13: 0000000080000101 R14: ffffffff8182c6e0 R15: ffff88806d4c3178 FS: 0000000000000000(0000) GS:ffff8880975ba000(0063) knlGS:00000000f5466b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000033df6ff8 CR3: 000000005214a000 CR4: 0000000000352ef0 Call Trace: call_timer_fn+0x197/0x620 kernel/time/timer.c:1747 expire_timers kernel/time/timer.c:1793 [inline] __run_timers+0x569/0x960 kernel/time/timer.c:2372 __run_timer_base kernel/time/timer.c:2384 [inline] __run_timer_base kernel/time/timer.c:2376 [inline] run_timer_base+0x114/0x190 kernel/time/timer.c:2393 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2403 handle_softirqs+0x216/0x8e0 kernel/softirq.c:579 __do_softirq kernel/softirq.c:613 [inline] invoke_softirq kernel/softirq.c:453 [inline] __irq_exit_rcu+0x109/0x170 kernel/softirq.c:680 irq_exit_rcu+0x9/0x30 kernel/softirq.c:696 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1050 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:finish_task_switch.isra.0+0x22a/0xc10 kernel/sched/core.c:5225 Code: fb 09 00 00 44 8b 05 19 39 23 0f 45 85 c0 0f 85 be 01 00 00 4c 89 e7 e8 a4 f6 ff ff e8 af 4b 3a 00 fb 65 48 8b 1d de bb 4d 12 <48> 8d bb 18 16 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 RSP: 0018:ffffc9000615f498 EFLAGS: 00000206 RAX: 0000000000005cbd RBX: ffff8880274e4880 RCX: ffffffff81c2eedf RDX: 0000000000000000 RSI: ffffffff8de4f55a RDI: ffffffff8c163780 RBP: ffffc9000615f4e0 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff90abab97 R11: 0000000000000000 R12: ffff88802b33a440 R13: ffff888023738000 R14: ffff88802b23a440 R15: ffff88802b33b2b0 context_switch kernel/sched/core.c:5360 [inline] __schedule+0x1198/0x5de0 kernel/sched/core.c:6961 __schedule_loop kernel/sched/core.c:7043 [inline] schedule+0xe7/0x3a0 kernel/sched/core.c:7058 schedule_timeout+0x257/0x290 kernel/time/sleep_timeout.c:75 unix_wait_for_peer+0x245/0x280 net/unix/af_unix.c:1639 unix_dgram_sendmsg+0x1410/0x17f0 net/unix/af_unix.c:2273 sock_sendmsg_nosec net/socket.c:714 [inline] __sock_sendmsg net/socket.c:729 [inline] ____sys_sendmsg+0xa95/0xc70 net/socket.c:2614 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2668 __sys_sendmmsg+0x2f9/0x420 net/socket.c:2750 __compat_sys_sendmmsg net/compat.c:360 [inline] __do_compat_sys_sendmmsg net/compat.c:367 [inline] __se_compat_sys_sendmmsg net/compat.c:364 [inline] __ia32_compat_sys_sendmmsg+0x9d/0x100 net/compat.c:364 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0x7c/0x300 arch/x86/entry/syscall_32.c:306 do_fast_syscall_32+0x32/0x80 arch/x86/entry/syscall_32.c:331 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7f61579 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:00000000f546655c EFLAGS: 00000296 ORIG_RAX: 0000000000000159 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000080000000 RDX: 0000000000000041 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): 0: fb sti 1: 09 00 or %eax,(%rax) 3: 00 44 8b 05 add %al,0x5(%rbx,%rcx,4) 7: 19 39 sbb %edi,(%rcx) 9: 23 0f and (%rdi),%ecx b: 45 85 c0 test %r8d,%r8d e: 0f 85 be 01 00 00 jne 0x1d2 14: 4c 89 e7 mov %r12,%rdi 17: e8 a4 f6 ff ff call 0xfffff6c0 1c: e8 af 4b 3a 00 call 0x3a4bd0 21: fb sti 22: 65 48 8b 1d de bb 4d mov %gs:0x124dbbde(%rip),%rbx # 0x124dbc08 29: 12 * 2a: 48 8d bb 18 16 00 00 lea 0x1618(%rbx),%rdi <-- trapping instruction 31: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 38: fc ff df 3b: 48 89 fa mov %rdi,%rdx 3e: 48 rex.W 3f: c1 .byte 0xc1