------------[ cut here ]------------ workqueue: cannot queue hci_cmd_timeout on wq hci1 WARNING: CPU: 2 PID: 32398 at kernel/workqueue.c:2255 __queue_work+0xd03/0x1160 kernel/workqueue.c:2254 Modules linked in: CPU: 2 UID: 0 PID: 32398 Comm: modprobe 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 a0 03 ac 8b e8 be 1e f7 ff 90 <0f> 0b 90 90 e9 2f f7 ff ff e8 ff 79 38 00 90 0f 0b 90 e9 b4 f5 ff RSP: 0018:ffffc90000648be8 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff817a4388 RDX: ffff88804e04c880 RSI: ffffffff817a4395 RDI: 0000000000000001 RBP: ffff88805547c970 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff920000c918f R13: 0000000080000100 R14: ffffffff81833490 R15: ffff8880368e0178 FS: 0000000000000000(0000) GS:ffff8880d68b2000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0d003efa10 CR3: 0000000045039000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000e58e DR6: 00000000ffff0ff0 DR7: 0000000000000400 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+0x219/0x8e0 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:check_region_inline mm/kasan/generic.c:174 [inline] RIP: 0010:kasan_check_range+0x1b/0x1b0 mm/kasan/generic.c:189 Code: 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 64 01 00 00 48 89 f8 41 54 44 0f b6 c2 48 01 f0 55 53 <0f> 82 d7 00 00 00 eb 0f cc cc cc 48 b8 00 00 00 00 00 00 00 ff eb RSP: 0018:ffffc9002663f838 EFLAGS: 00000282 RAX: ffffffff9b318dc4 RBX: 0000000000000001 RCX: ffffffff8b8c604f RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffffff9b318dc0 RBP: ffff888046573900 R08: 0000000000000001 R09: fffffbfff36631c0 R10: 0000000000000003 R11: 0000000000000000 R12: dffffc0000000000 R13: 0000000000000005 R14: 0000000000000300 R15: 0000000000000000 instrument_atomic_read_write include/linux/instrumented.h:96 [inline] atomic_inc include/linux/atomic/atomic-instrumented.h:435 [inline] mt_validate_nulls+0x38f/0x9e0 lib/maple_tree.c:7565 mt_validate+0x30d8/0x4210 lib/maple_tree.c:7615 validate_mm+0xb0/0x570 mm/vma.c:651 mmap_region+0x1e9/0x3f0 mm/vma.c:2745 do_mmap+0xa3e/0x1210 mm/mmap.c:558 vm_mmap_pgoff+0x29e/0x470 mm/util.c:580 ksys_mmap_pgoff+0x32c/0x5c0 mm/mmap.c:604 __do_sys_mmap arch/x86/kernel/sys_x86_64.c:89 [inline] __se_sys_mmap arch/x86/kernel/sys_x86_64.c:82 [inline] __x64_sys_mmap+0x125/0x190 arch/x86/kernel/sys_x86_64.c:82 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x4e0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0d0071c242 Code: 08 00 04 00 00 eb e2 90 41 f7 c1 ff 0f 00 00 75 27 55 89 cd 53 48 89 fb 48 85 ff 74 33 41 89 ea 48 89 df b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 5e 5b 5d c3 0f 1f 00 c7 05 46 40 01 00 16 00 RSP: 002b:00007ffeceff1378 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f0d003c1000 RCX: 00007f0d0071c242 RDX: 0000000000000001 RSI: 0000000000026000 RDI: 00007f0d003c1000 RBP: 0000000000000812 R08: 0000000000000000 R09: 000000000003a000 R10: 0000000000000812 R11: 0000000000000206 R12: 00007ffeceff1400 R13: 00007f0d003f36b0 R14: 00007ffeceff17b0 R15: 00000fffd9dfe272 ---------------- Code disassembly (best guess): 0: 90 nop 1: 90 nop 2: 90 nop 3: 90 nop 4: 90 nop 5: 90 nop 6: 90 nop 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 66 0f 1f 00 nopw (%rax) 13: 48 85 f6 test %rsi,%rsi 16: 0f 84 64 01 00 00 je 0x180 1c: 48 89 f8 mov %rdi,%rax 1f: 41 54 push %r12 21: 44 0f b6 c2 movzbl %dl,%r8d 25: 48 01 f0 add %rsi,%rax 28: 55 push %rbp 29: 53 push %rbx * 2a: 0f 82 d7 00 00 00 jb 0x107 <-- trapping instruction 30: eb 0f jmp 0x41 32: cc int3 33: cc int3 34: cc int3 35: 48 b8 00 00 00 00 00 movabs $0xff00000000000000,%rax 3c: 00 00 ff 3f: eb .byte 0xeb