watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [udevd:3879] Modules linked in: irq event stamp: 0 hardirqs last enabled at (0): [<0000000000000000>] 0x0 hardirqs last disabled at (0): [] copy_process+0x1815/0x6b00 kernel/fork.c:1968 softirqs last enabled at (0): [] copy_process+0x18bc/0x6b00 kernel/fork.c:1971 softirqs last disabled at (0): [<0000000000000000>] 0x0 CPU: 0 PID: 3879 Comm: udevd Not tainted 5.3.0-rc2-next-20190802 #58 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:atomic_read include/asm-generic/atomic-instrumented.h:26 [inline] RIP: 0010:virt_spin_lock arch/x86/include/asm/qspinlock.h:83 [inline] RIP: 0010:native_queued_spin_lock_slowpath+0xaa/0x9f0 kernel/locking/qspinlock.c:325 Code: 0f 1f 44 00 00 49 89 fe 49 89 fd 41 bc 01 00 00 00 49 c1 ee 03 41 83 e5 07 48 b8 00 00 00 00 00 fc ff df 49 01 c6 41 83 c5 03 04 00 00 00 48 89 df e8 f9 fc 53 00 41 0f b6 06 41 38 c5 7c 08 RSP: 0018:ffff8880ae809b48 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000000 RBX: ffff88809426ccc8 RCX: ffffffff8158f457 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88809426ccc8 RBP: ffff8880ae809c08 R08: 1ffff1101284d999 R09: ffffed101284d99a R10: ffffed101284d999 R11: ffff88809426cccb R12: 0000000000000001 R13: 0000000000000003 R14: ffffed101284d999 R15: 0000000000000001 FS: 00007f05957337a0(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000070f158 CR3: 00000000969ba000 CR4: 00000000001406f0 Call Trace: pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:642 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:50 [inline] queued_spin_lock include/asm-generic/qspinlock.h:81 [inline] do_raw_spin_lock+0x20e/0x2e0 kernel/locking/spinlock_debug.c:113 __raw_spin_lock include/linux/spinlock_api_smp.h:143 [inline] _raw_spin_lock+0x37/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:338 [inline] tcp_write_timer+0x2b/0x1e0 net/ipv4/tcp_timer.c:610 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1771 [inline] __run_timers kernel/time/timer.c:1738 [inline] run_timer_softirq+0x6c0/0x17f0 kernel/time/timer.c:1784 __do_softirq+0x262/0x98c kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1095 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:828 RIP: 0010:__raw_write_unlock_irq include/linux/rwlock_api_smp.h:268 [inline] RIP: 0010:_raw_write_unlock_irq+0x54/0x90 kernel/locking/spinlock.c:343 Code: c0 b0 f4 d2 88 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 33 48 83 3d d5 43 93 01 00 74 20 fb 66 0f 1f 44 00 00 01 00 00 00 e8 62 5b 0e fa 65 8b 05 13 4d c2 78 85 c0 74 06 41 RSP: 0018:ffff888096b87bf0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff11a5e96 RBX: ffffffff81ca2470 RCX: 1ffffffff134c076 RDX: dffffc0000000000 RSI: ffffffff8177a69e RDI: ffffffff873fb0b8 RBP: ffff888096b87bf8 R08: ffff888096b783c0 R09: fffffbfff134ba39 R10: fffffbfff134ba38 R11: ffffffff89a5d1c7 R12: ffff888095ece6e0 R13: ffff888096b87dc0 R14: ffff888095ece6d0 R15: ffff888095ece6e0 ep_scan_ready_list+0x2f6/0xb20 fs/eventpoll.c:699 ep_send_events fs/eventpoll.c:1793 [inline] ep_poll+0x1f9/0xe60 fs/eventpoll.c:1930 do_epoll_wait+0x210/0x260 fs/eventpoll.c:2294 __do_sys_epoll_wait fs/eventpoll.c:2304 [inline] __se_sys_epoll_wait fs/eventpoll.c:2301 [inline] __x64_sys_epoll_wait+0x97/0xf0 fs/eventpoll.c:2301 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f0594e47943 Code: 00 31 d2 48 29 c2 64 89 11 48 83 c8 ff eb ea 90 90 90 90 90 90 90 90 83 3d b5 dc 2a 00 00 75 13 49 89 ca b8 e8 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 34 c3 48 83 ec 08 e8 3b c4 00 00 48 89 04 24 RSP: 002b:00007ffecd443708 EFLAGS: 00000246 ORIG_RAX: 00000000000000e8 RAX: ffffffffffffffda RBX: 0000000000000bb8 RCX: 00007f0594e47943 RDX: 0000000000000008 RSI: 00007ffecd443800 RDI: 000000000000000a RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000bb8 R11: 0000000000000246 R12: 0000000000000003 R13: 0000000000000000 R14: 0000000000a03190 R15: 000000000097b250 Sending NMI from CPU 0 to CPUs 1: INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.163 msecs NMI backtrace for cpu 1 CPU: 1 PID: 16117 Comm: syz-executor.3 Not tainted 5.3.0-rc2-next-20190802 #58 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:cpu_relax arch/x86/include/asm/processor.h:656 [inline] RIP: 0010:virt_spin_lock arch/x86/include/asm/qspinlock.h:84 [inline] RIP: 0010:native_queued_spin_lock_slowpath+0x132/0x9f0 kernel/locking/qspinlock.c:325 Code: 00 00 00 48 8b 45 d0 65 48 33 04 25 28 00 00 00 0f 85 37 07 00 00 48 81 c4 98 00 00 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 f3 90 73 ff ff ff 8b 45 98 4c 8d 65 d8 3d 00 01 00 00 0f 84 e5 00 00 RSP: 0018:ffff8880ae909210 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffff88809426ccc8 RCX: ffffffff8158f457 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88809426ccc8 RBP: ffff8880ae9092d0 R08: 1ffff1101284d999 R09: ffffed101284d99a R10: ffffed101284d999 R11: ffff88809426cccb R12: 0000000000000001 R13: 0000000000000003 R14: ffffed101284d999 R15: 0000000000000001 FS: 00005555556c4940(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2e139000 CR3: 00000000969b9000 CR4: 00000000001406e0 Call Trace: pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:642 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:50 [inline] queued_spin_lock include/asm-generic/qspinlock.h:81 [inline] do_raw_spin_lock+0x20e/0x2e0 kernel/locking/spinlock_debug.c:113 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:136 [inline] _raw_spin_lock_bh+0x3b/0x50 kernel/locking/spinlock.c:175 spin_lock_bh include/linux/spinlock.h:343 [inline] release_sock+0x20/0x1c0 net/core/sock.c:2932 wait_on_pending_writer+0x20f/0x420 net/tls/tls_main.c:91 tls_sk_proto_cleanup+0x2c5/0x3e0 net/tls/tls_main.c:295 tls_sk_proto_unhash+0x90/0x3f0 net/tls/tls_main.c:330 tcp_set_state+0x5b9/0x7d0 net/ipv4/tcp.c:2235 tcp_done+0xe2/0x320 net/ipv4/tcp.c:3824 tcp_reset+0x132/0x500 net/ipv4/tcp_input.c:4123 tcp_validate_incoming+0xa2d/0x1660 net/ipv4/tcp_input.c:5483 tcp_rcv_established+0x6b5/0x1e70 net/ipv4/tcp_input.c:5691 tcp_v6_do_rcv+0x41e/0x12c0 net/ipv6/tcp_ipv6.c:1371 tcp_v6_rcv+0x31f1/0x3500 net/ipv6/tcp_ipv6.c:1603 ip6_protocol_deliver_rcu+0x2fe/0x1660 net/ipv6/ip6_input.c:397 ip6_input_finish+0x84/0x170 net/ipv6/ip6_input.c:438 NF_HOOK include/linux/netfilter.h:305 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] ip6_input+0xe4/0x3f0 net/ipv6/ip6_input.c:447 dst_input include/net/dst.h:442 [inline] ip6_rcv_finish+0x1de/0x2f0 net/ipv6/ip6_input.c:76 NF_HOOK include/linux/netfilter.h:305 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] ipv6_rcv+0x10e/0x420 net/ipv6/ip6_input.c:272 __netif_receive_skb_one_core+0x113/0x1a0 net/core/dev.c:4999 __netif_receive_skb+0x2c/0x1d0 net/core/dev.c:5113 process_backlog+0x206/0x750 net/core/dev.c:5924 napi_poll net/core/dev.c:6347 [inline] net_rx_action+0x508/0x10c0 net/core/dev.c:6413 __do_softirq+0x262/0x98c kernel/softirq.c:292 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1080 do_softirq.part.0+0x11a/0x170 kernel/softirq.c:337 do_softirq kernel/softirq.c:329 [inline] __local_bh_enable_ip+0x211/0x270 kernel/softirq.c:189 local_bh_enable include/linux/bottom_half.h:32 [inline] inet_csk_listen_stop+0x1e0/0x850 net/ipv4/inet_connection_sock.c:993 tcp_close+0xd5b/0x10e0 net/ipv4/tcp.c:2338 inet_release+0xed/0x200 net/ipv4/af_inet.c:427 inet6_release+0x53/0x80 net/ipv6/af_inet6.c:470 __sock_release+0xce/0x280 net/socket.c:590 sock_close+0x1e/0x30 net/socket.c:1268 __fput+0x2ff/0x890 fs/file_table.c:280 ____fput+0x16/0x20 fs/file_table.c:313 task_work_run+0x145/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:188 [inline] exit_to_usermode_loop+0x316/0x380 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:194 [inline] syscall_return_slowpath arch/x86/entry/common.c:274 [inline] do_syscall_64+0x65f/0x760 arch/x86/entry/common.c:300 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x413511 Code: 75 14 b8 03 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 04 1b 00 00 c3 48 83 ec 08 e8 0a fc ff ff 48 89 04 24 b8 03 00 00 00 0f 05 <48> 8b 3c 24 48 89 c2 e8 53 fc ff ff 48 89 d0 48 83 c4 08 48 3d 01 RSP: 002b:00007ffda44de510 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000413511 RDX: 0000000000000000 RSI: ffffffff873d3e80 RDI: 0000000000000004 RBP: 0000000000000001 R08: ffffffff8128fdec R09: 000000004fe995a0 R10: 00007ffda44de5f0 R11: 0000000000000293 R12: 000000000075c9a0 R13: 000000000075c9a0 R14: 0000000000761ca0 R15: ffffffffffffffff