Bluetooth: hci3 command 0x0406 tx timeout Bluetooth: hci0 command 0x0406 tx timeout watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.5:14135] Modules linked in: irq event stamp: 15464685 hardirqs last enabled at (15464684): [<ffffffff817eca20>] kmem_cache_free+0x160/0x2b0 mm/slab.c:3759 hardirqs last disabled at (15464685): [<ffffffff874018ae>] apic_timer_interrupt+0x8e/0xa0 arch/x86/entry/entry_64.S:793 softirqs last enabled at (15453014): [<ffffffff8760068b>] __do_softirq+0x68b/0x9ff kernel/softirq.c:314 softirqs last disabled at (15453017): [<ffffffff81321cf3>] invoke_softirq kernel/softirq.c:368 [inline] softirqs last disabled at (15453017): [<ffffffff81321cf3>] irq_exit+0x193/0x240 kernel/softirq.c:409 CPU: 1 PID: 14135 Comm: syz-executor.5 Not tainted 4.14.277-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff88809564a4c0 task.stack: ffff88809ab30000 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline] RIP: 0010:kmem_cache_free+0x173/0x2b0 mm/slab.c:3759 RSP: 0018:ffff8880ba507588 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 RAX: 0000000000000007 RBX: ffff88803b02d500 RCX: 1ffff11012ac95ad RDX: 0000000000000000 RSI: ffff88809564ad98 RDI: 0000000000000286 RBP: ffff88823a817240 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000286 R13: ffffffff85bebe18 R14: ffffffff860e6ae0 R15: 00000000000005c8 FS: 00007f87e6363700(0000) GS:ffff8880ba500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe674ad44c CR3: 00000000aa8a9000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> kfree_skbmem+0x98/0x100 net/core/skbuff.c:595 __kfree_skb net/core/skbuff.c:655 [inline] kfree_skb+0xf4/0x390 net/core/skbuff.c:672 ip_fragment.constprop.0+0x1c0/0x200 net/ipv4/ip_output.c:566 ip_finish_output+0x89e/0xc50 net/ipv4/ip_output.c:323 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip_output+0x1cd/0x510 net/ipv4/ip_output.c:413 dst_output include/net/dst.h:470 [inline] ip_local_out+0x93/0x170 net/ipv4/ip_output.c:125 nf_dup_ipv4 net/ipv4/netfilter/nf_dup_ipv4.c:91 [inline] nf_dup_ipv4+0x4bb/0x680 net/ipv4/netfilter/nf_dup_ipv4.c:53 tee_tg4+0x109/0x160 net/netfilter/xt_TEE.c:36 ipt_do_table+0xa9d/0x16f0 net/ipv4/netfilter/ip_tables.c:353 iptable_filter_hook+0x172/0x1e0 net/ipv4/netfilter/iptable_filter.c:47 nf_hook_entry_hookfn include/linux/netfilter.h:108 [inline] nf_hook_slow+0xb0/0x1a0 net/netfilter/core.c:468 nf_hook include/linux/netfilter.h:205 [inline] NF_HOOK include/linux/netfilter.h:248 [inline] ip_local_deliver+0x28c/0x460 net/ipv4/ip_input.c:257 dst_input include/net/dst.h:476 [inline] ip_rcv_finish+0x6e3/0x19f0 net/ipv4/ip_input.c:396 NF_HOOK include/linux/netfilter.h:250 [inline] ip_rcv+0x8a7/0xf10 net/ipv4/ip_input.c:493 __netif_receive_skb_core+0x15ee/0x2a30 net/core/dev.c:4474 __netif_receive_skb+0x27/0x1a0 net/core/dev.c:4512 process_backlog+0x218/0x6f0 net/core/dev.c:5195 napi_poll net/core/dev.c:5604 [inline] net_rx_action+0x466/0xfd0 net/core/dev.c:5670 __do_softirq+0x24d/0x9ff kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x193/0x240 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:638 [inline] smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1106 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793 </IRQ> RIP: 0010:__tlb_remove_page_size+0xde/0x440 mm/memory.c:327 RSP: 0018:ffff88809ab37790 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 RAX: dffffc0000000000 RBX: ffff88809ab379d0 RCX: 1ffff11012ac95ae RDX: 1ffff11009001001 RSI: ffffea0002d08e00 RDI: ffff888048008008 RBP: ffff888048008000 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: ffff88809564a4c0 R12: 000000000000005f R13: ffffea0002d08e00 R14: 00007f87e6bc5000 R15: ffff88809ab379f8 __tlb_remove_page include/asm-generic/tlb.h:152 [inline] zap_pte_range mm/memory.c:1378 [inline] zap_pmd_range mm/memory.c:1479 [inline] zap_pud_range mm/memory.c:1508 [inline] zap_p4d_range mm/memory.c:1529 [inline] unmap_page_range+0xf94/0x1d90 mm/memory.c:1550 unmap_single_vma+0x147/0x2b0 mm/memory.c:1595 unmap_vmas+0x9d/0x160 mm/memory.c:1625 exit_mmap+0x270/0x4d0 mm/mmap.c:3058 __mmput kernel/fork.c:931 [inline] mmput kernel/fork.c:952 [inline] mmput+0xfa/0x420 kernel/fork.c:947 exit_mm kernel/exit.c:548 [inline] do_exit+0x984/0x2850 kernel/exit.c:855 do_group_exit+0x100/0x2e0 kernel/exit.c:965 get_signal+0x38d/0x1ca0 kernel/signal.c:2412 do_signal+0x7c/0x1550 arch/x86/kernel/signal.c:792 exit_to_usermode_loop+0x160/0x200 arch/x86/entry/common.c:160 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f87e79ee0e9 RSP: 002b:00007f87e6363218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f87e7b00f68 RCX: 00007f87e79ee0e9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f87e7b00f68 RBP: 00007f87e7b00f60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f87e7b00f6c R13: 00007ffcb23f5b8f R14: 00007f87e6363300 R15: 0000000000022000 Code: eb 11 48 63 75 74 48 89 df e8 1a 5e 9b 01 e9 11 ff ff ff e8 f0 b2 c2 ff 48 83 3d 60 ce 71 07 00 0f 84 22 01 00 00 4c 89 e7 57 9d <0f> 1f 44 00 00 e9 31 ff ff ff 65 8b 05 ec 56 83 7e 83 f8 07 0f Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 14110 Comm: syz-executor.0 Not tainted 4.14.277-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 task: ffff888096968000 task.stack: ffff888079490000 RIP: 0010:timerqueue_add+0xd/0x250 lib/timerqueue.c:40 RSP: 0018:ffff8880ba406cc8 EFLAGS: 00000046 RAX: 0000000000000000 RBX: ffff8880ba42ed40 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff888076cd0d08 RDI: ffff8880ba42ed50 RBP: ffff8880ba42ec80 R08: ffffffff8c01cd08 R09: 0000000000000005 R10: 0000000000000000 R11: ffff888096968000 R12: ffff888076cd0d08 R13: 0000000000000003 R14: dffffc0000000000 R15: 0000000000000000 FS: 00007f641950a700(0000) GS:ffff8880ba400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555568f1848 CR3: 00000000aa8a9000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <IRQ> enqueue_hrtimer+0x119/0x3b0 kernel/time/hrtimer.c:851 __run_hrtimer kernel/time/hrtimer.c:1238 [inline] __hrtimer_run_queues+0x8e2/0xc80 kernel/time/hrtimer.c:1287 hrtimer_interrupt+0x1e6/0x5e0 kernel/time/hrtimer.c:1321 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1079 [inline] smp_apic_timer_interrupt+0x117/0x5e0 arch/x86/kernel/apic/apic.c:1104 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793 RIP: 0010:ipv4_mtu+0x0/0x370 net/ipv4/route.c:1333 RSP: 0018:ffff8880ba406f88 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff10 RAX: dffffc0000000000 RBX: ffffffff89d5e140 RCX: 0000000000000000 RDX: 1ffffffff13abc2c RSI: 1ffffffff10ac4ac RDI: ffff888076b1a180 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000004 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88803af2a7c0 R13: ffff888095324080 R14: ffff888076b1a180 R15: ffffffff88562560 dst_mtu include/net/dst.h:227 [inline] ip_dst_mtu_maybe_forward include/net/ip.h:372 [inline] ip_skb_dst_mtu include/net/ip.h:388 [inline] ip_finish_output+0x880/0xc50 net/ipv4/ip_output.c:318 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip_output+0x1cd/0x510 net/ipv4/ip_output.c:413 dst_output include/net/dst.h:470 [inline] ip_local_out+0x93/0x170 net/ipv4/ip_output.c:125 iptunnel_xmit+0x5cc/0x950 net/ipv4/ip_tunnel_core.c:91 ip_tunnel_xmit+0xedc/0x33e0 net/ipv4/ip_tunnel.c:799 sit_tunnel_xmit__ net/ipv6/sit.c:1006 [inline] sit_tunnel_xmit+0x1ab/0x2130 net/ipv6/sit.c:1019 __netdev_start_xmit include/linux/netdevice.h:4054 [inline] netdev_start_xmit include/linux/netdevice.h:4063 [inline] xmit_one net/core/dev.c:3005 [inline] dev_hard_start_xmit+0x188/0x890 net/core/dev.c:3021 __dev_queue_xmit+0x1d7f/0x2480 net/core/dev.c:3521 neigh_output include/net/neighbour.h:500 [inline] ip_finish_output2+0xba6/0x1340 net/ipv4/ip_output.c:237 ip_finish_output+0x37c/0xc50 net/ipv4/ip_output.c:325 NF_HOOK_COND include/linux/netfilter.h:239 [inline] ip_output+0x1cd/0x510 net/ipv4/ip_output.c:413 dst_output include/net/dst.h:470 [inline] ip_local_out+0x93/0x170 net/ipv4/ip_output.c:125 nf_dup_ipv4 net/ipv4/netfilter/nf_dup_ipv4.c:91 [inline] nf_dup_ipv4+0x4bb/0x680 net/ipv4/netfilter/nf_dup_ipv4.c:53 tee_tg4+0x109/0x160 net/netfilter/xt_TEE.c:36 ipt_do_table+0xa9d/0x16f0 net/ipv4/netfilter/ip_tables.c:353 iptable_filter_hook+0x172/0x1e0 net/ipv4/netfilter/iptable_filter.c:47 nf_hook_entry_hookfn include/linux/netfilter.h:108 [inline] nf_hook_slow+0xb0/0x1a0 net/netfilter/core.c:468 nf_hook include/linux/netfilter.h:205 [inline] NF_HOOK include/linux/netfilter.h:248 [inline] ip_local_deliver+0x28c/0x460 net/ipv4/ip_input.c:257 dst_input include/net/dst.h:476 [inline] ip_rcv_finish+0x6e3/0x19f0 net/ipv4/ip_input.c:396 NF_HOOK include/linux/netfilter.h:250 [inline] ip_rcv+0x8a7/0xf10 net/ipv4/ip_input.c:493 __netif_receive_skb_core+0x15ee/0x2a30 net/core/dev.c:4474 __netif_receive_skb+0x27/0x1a0 net/core/dev.c:4512 process_backlog+0x218/0x6f0 net/core/dev.c:5195 napi_poll net/core/dev.c:5604 [inline] net_rx_action+0x466/0xfd0 net/core/dev.c:5670 __do_softirq+0x24d/0x9ff kernel/softirq.c:288 invoke_softirq kernel/softirq.c:368 [inline] irq_exit+0x193/0x240 kernel/softirq.c:409 exiting_irq arch/x86/include/asm/apic.h:638 [inline] smp_apic_timer_interrupt+0x141/0x5e0 arch/x86/kernel/apic/apic.c:1106 apic_timer_interrupt+0x93/0xa0 arch/x86/entry/entry_64.S:793 </IRQ> RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:779 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xa3/0xe0 kernel/locking/spinlock.c:192 RSP: 0018:ffff888079497570 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff10 RAX: 1ffffffff11e1311 RBX: 0000000000000286 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000001 RDI: 0000000000000286 RBP: ffffffff8c085f08 R08: 1ffff1100ad0fe3b R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888086800000 R13: 000000000000000c R14: ffffffff8c085f08 R15: ffff88805687f1c0 __debug_check_no_obj_freed lib/debugobjects.c:760 [inline] debug_check_no_obj_freed+0x2c0/0x680 lib/debugobjects.c:776 free_pages_prepare mm/page_alloc.c:1064 [inline] __free_pages_ok+0x215/0xed0 mm/page_alloc.c:1262 release_pages+0x779/0xbf0 mm/swap.c:788 tlb_flush_mmu_free+0xc1/0x1a0 mm/memory.c:272 zap_pte_range mm/memory.c:1444 [inline] zap_pmd_range mm/memory.c:1479 [inline] zap_pud_range mm/memory.c:1508 [inline] zap_p4d_range mm/memory.c:1529 [inline] unmap_page_range+0x1558/0x1d90 mm/memory.c:1550 unmap_single_vma+0x147/0x2b0 mm/memory.c:1595 unmap_vmas+0x9d/0x160 mm/memory.c:1625 exit_mmap+0x270/0x4d0 mm/mmap.c:3058 __mmput kernel/fork.c:931 [inline] mmput kernel/fork.c:952 [inline] mmput+0xfa/0x420 kernel/fork.c:947 exit_mm kernel/exit.c:548 [inline] do_exit+0x984/0x2850 kernel/exit.c:855 do_group_exit+0x100/0x2e0 kernel/exit.c:965 get_signal+0x38d/0x1ca0 kernel/signal.c:2412 do_signal+0x7c/0x1550 arch/x86/kernel/signal.c:792 exit_to_usermode_loop+0x160/0x200 arch/x86/entry/common.c:160 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline] syscall_return_slowpath arch/x86/entry/common.c:270 [inline] do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297 entry_SYSCALL_64_after_hwframe+0x46/0xbb RIP: 0033:0x7f641ab950e9 RSP: 002b:00007f641950a218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f641aca7f68 RCX: 00007f641ab950e9 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f641aca7f68 RBP: 00007f641aca7f60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f641aca7f6c R13: 00007ffe8c9f2c6f R14: 00007f641950a300 R15: 0000000000022000 Code: e9 ad fe ff ff e8 44 21 7f fa eb b1 4c 89 e7 e8 3a 21 7f fa eb 82 90 90 90 90 90 90 90 90 41 57 41 56 41 55 41 54 49 89 f4 55 53 <48> 83 ec 08 48 89 3c 24 e8 c6 6a 55 fa 4c 89 e2 48 b8 00 00 00 ---------------- Code disassembly (best guess): 0: eb 11 jmp 0x13 2: 48 63 75 74 movslq 0x74(%rbp),%rsi 6: 48 89 df mov %rbx,%rdi 9: e8 1a 5e 9b 01 callq 0x19b5e28 e: e9 11 ff ff ff jmpq 0xffffff24 13: e8 f0 b2 c2 ff callq 0xffc2b308 18: 48 83 3d 60 ce 71 07 cmpq $0x0,0x771ce60(%rip) # 0x771ce80 1f: 00 20: 0f 84 22 01 00 00 je 0x148 26: 4c 89 e7 mov %r12,%rdi 29: 57 push %rdi 2a: 9d popfq * 2b: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) <-- trapping instruction 30: e9 31 ff ff ff jmpq 0xffffff66 35: 65 8b 05 ec 56 83 7e mov %gs:0x7e8356ec(%rip),%eax # 0x7e835728 3c: 83 f8 07 cmp $0x7,%eax 3f: 0f .byte 0xf