------------[ cut here ]------------ workqueue: cannot queue hci_cmd_timeout on wq hci0 WARNING: CPU: 0 PID: 8445 at kernel/workqueue.c:2257 __queue_work+0xc9c/0x10f0 kernel/workqueue.c:2256 Modules linked in: CPU: 0 UID: 0 PID: 8445 Comm: syz.0.720 Not tainted 6.16.0-rc7-syzkaller-00127-g302f88ff3584 #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+0xc9c/0x10f0 kernel/workqueue.c:2256 Code: 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 28 04 00 00 48 8b 75 18 4c 89 f2 48 c7 c7 c0 07 ac 8b e8 d5 16 f7 ff 90 <0f> 0b 90 90 e9 96 f7 ff ff e8 46 0f 38 00 90 0f 0b 90 e9 1b f6 ff RSP: 0018:ffffc90000007be8 EFLAGS: 00010082 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff817af1a8 RDX: ffff888063cc0000 RSI: ffffffff817af1b5 RDI: 0000000000000001 RBP: ffff888036918970 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 1ffff92000000f8f R13: 0000000080000100 R14: ffff88802f525978 R15: 0000000000000001 FS: 00007f739da786c0(0000) GS:ffff8880d6720000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000050 CR3: 00000000535d2000 CR4: 0000000000352ef0 Call Trace: call_timer_fn+0x19a/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:__seqprop_raw_spinlock_sequence include/linux/seqlock.h:226 [inline] RIP: 0010:ktime_get_coarse_real_ts64_mg+0xd6/0x300 kernel/time/timekeeping.c:2307 Code: 48 c7 c7 48 a9 df 9a e8 18 b8 ee ff 9c 41 5c 41 81 e4 00 02 00 00 31 ff 4c 89 e6 e8 c4 18 12 00 58 4d 85 e4 0f 85 b8 01 00 00 45 1d 12 00 44 8b 25 ee dd 35 19 45 89 e5 31 ff 41 83 e5 01 44 RSP: 0018:ffffc900057fefe8 EFLAGS: 00000293 RAX: 0000000000000000 RBX: ffffc900057ff058 RCX: ffffffff81a9ccb0 RDX: ffff888063cc0000 RSI: ffffffff81a9ccbb RDI: 0000000000000007 RBP: ffffc900057ff028 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: 1ffff92000affe0c R14: fffff52000affe0b R15: ffffc900057ff060 current_time+0x82/0x1a0 fs/inode.c:2253 inode_needs_update_time.part.0+0x21/0x270 fs/inode.c:2282 inode_needs_update_time fs/inode.c:2336 [inline] file_update_time+0x9b/0x1c0 fs/inode.c:2331 shmem_file_write_iter+0xec/0x140 mm/shmem.c:3464 __kernel_write_iter+0x31a/0xa90 fs/read_write.c:619 dump_emit_page fs/coredump.c:1112 [inline] dump_user_range+0x41f/0xb60 fs/coredump.c:1186 elf_core_dump+0x288a/0x3a90 fs/binfmt_elf.c:2075 do_coredump+0x399c/0x4f10 fs/coredump.c:950 get_signal+0x22e3/0x26d0 kernel/signal.c:3019 arch_do_signal_or_restart+0x8f/0x7d0 arch/x86/kernel/signal.c:337 exit_to_user_mode_loop kernel/entry/common.c:111 [inline] exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline] irqentry_exit_to_user_mode+0x12a/0x270 kernel/entry/common.c:184 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623 RIP: 0033:0x7f739cb8e9b1 Code: 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 48 3d 01 f0 ff ff 73 01 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f RSP: 002b:0000000000000050 EFLAGS: 00010217 RAX: 0000000000000000 RBX: 00007f739cdb5fa0 RCX: 00007f739cb8e9a9 RDX: 0000000000000000 RSI: 0000000000000050 RDI: 0000000000904000 RBP: 00007f739cc10d69 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f739cdb5fa0 R15: 00007ffd05d73168 ---------------- Code disassembly (best guess): 0: 48 c7 c7 48 a9 df 9a mov $0xffffffff9adfa948,%rdi 7: e8 18 b8 ee ff call 0xffeeb824 c: 9c pushf d: 41 5c pop %r12 f: 41 81 e4 00 02 00 00 and $0x200,%r12d 16: 31 ff xor %edi,%edi 18: 4c 89 e6 mov %r12,%rsi 1b: e8 c4 18 12 00 call 0x1218e4 20: 58 pop %rax 21: 4d 85 e4 test %r12,%r12 24: 0f 85 b8 01 00 00 jne 0x1e2 * 2a: e8 45 1d 12 00 call 0x121d74 <-- trapping instruction 2f: 44 8b 25 ee dd 35 19 mov 0x1935ddee(%rip),%r12d # 0x1935de24 36: 45 89 e5 mov %r12d,%r13d 39: 31 ff xor %edi,%edi 3b: 41 83 e5 01 and $0x1,%r13d 3f: 44 rex.R