watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz-executor.2:10710] Modules linked in: irq event stamp: 38901 hardirqs last enabled at (38900): [] trace_hardirqs_on_thunk+0x1a/0x20 arch/x86/entry/thunk_64.S:41 hardirqs last disabled at (38901): [] trace_hardirqs_off_thunk+0x1a/0x20 arch/x86/entry/thunk_64.S:42 softirqs last enabled at (6394): [] __do_softirq+0x6cd/0x98c kernel/softirq.c:319 softirqs last disabled at (8415): [] invoke_softirq kernel/softirq.c:373 [inline] softirqs last disabled at (8415): [] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 CPU: 0 PID: 10710 Comm: syz-executor.2 Not tainted 5.3.0-rc7+ #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:hhf_dequeue+0x537/0xa20 net/sched/sch_hhf.c:432 Code: c8 42 80 3c 20 00 0f 85 3a 04 00 00 49 8b 85 90 03 00 00 48 39 45 c8 0f 85 4b fb ff ff 45 31 ff e9 b0 02 00 00 e8 19 95 aa fb <48> 8d 43 f0 41 be 01 00 00 00 49 8d 95 c0 02 00 00 48 39 c2 74 34 RSP: 0000:ffff8880ae809518 EFLAGS: 00000206 ORIG_RAX: ffffffffffffff13 RAX: ffff888086932680 RBX: ffff88808c7f7538 RCX: ffffffff85c7dbb9 RDX: 0000000000000100 RSI: ffffffff85c7e037 RDI: 0000000000000005 RBP: ffff8880ae809568 R08: ffff888086932680 R09: fffffbfff14e9555 R10: ffff888086932fd8 R11: ffff888086932680 R12: dffffc0000000000 R13: ffff88808c7f7240 R14: ffff88808c7f75d0 R15: 0000000000000000 FS: 0000555557253940(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2d33a000 CR3: 0000000089ea2000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: dequeue_skb net/sched/sch_generic.c:258 [inline] qdisc_restart net/sched/sch_generic.c:361 [inline] __qdisc_run+0x1e7/0x19d0 net/sched/sch_generic.c:379 __dev_xmit_skb net/core/dev.c:3533 [inline] __dev_queue_xmit+0x16f1/0x3650 net/core/dev.c:3838 dev_queue_xmit+0x18/0x20 net/core/dev.c:3902 neigh_hh_output include/net/neighbour.h:500 [inline] neigh_output include/net/neighbour.h:509 [inline] ip6_finish_output2+0xf58/0x2520 net/ipv6/ip6_output.c:116 __ip6_finish_output+0x444/0xa50 net/ipv6/ip6_output.c:142 ip6_finish_output+0x38/0x1f0 net/ipv6/ip6_output.c:152 NF_HOOK_COND include/linux/netfilter.h:294 [inline] ip6_output+0x235/0x7c0 net/ipv6/ip6_output.c:175 dst_output include/net/dst.h:436 [inline] NF_HOOK include/linux/netfilter.h:305 [inline] ndisc_send_skb+0xf29/0x1450 net/ipv6/ndisc.c:505 ndisc_send_rs+0x134/0x6d0 net/ipv6/ndisc.c:699 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3879 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1322 expire_timers kernel/time/timer.c:1366 [inline] __run_timers kernel/time/timer.c:1685 [inline] __run_timers kernel/time/timer.c:1653 [inline] run_timer_softirq+0x697/0x17a0 kernel/time/timer.c:1698 __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:537 [inline] smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1133 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 RIP: 0033:0x40e894 Code: f0 0f 1f 44 00 00 48 8d 6f f8 4c 39 c1 49 89 ee 77 2c 48 83 e8 08 48 39 ca 76 0f 0f 1f 00 48 83 e8 08 48 8b 10 48 39 ca 77 f4 <48> 39 e8 76 18 48 89 57 f8 4c 89 00 48 8b 50 f8 49 8b 0c 24 4c 8b RSP: 002b:00007fff5eed9ab0 EFLAGS: 00000287 ORIG_RAX: ffffffffffffff13 RAX: 00007f14a468aa38 RBX: 00007f14a45f25b8 RCX: ffffffff863b1bb0 RDX: ffffffff859b9d94 RSI: 00007f14a46b1808 RDI: 00007f14a4678a70 RBP: 00007f14a4678a68 R08: ffffffff86404624 R09: 00000000c43a528e R10: 00007fff5eed9c80 R11: 0000000000000246 R12: 00007f14a45f25a8 R13: 000000000000001f R14: 00007f14a4678a68 R15: 000000000003ffff Sending NMI from CPU 0 to CPUs 1: INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.606 msecs NMI backtrace for cpu 1 CPU: 1 PID: 10739 Comm: syz-executor.5 Not tainted 5.3.0-rc7+ #0 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:ffff8880ae908de0 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffff88808c7f7328 RCX: ffffffff81595c37 RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff88808c7f7328 RBP: ffff8880ae908ea0 R08: 1ffff110118fee65 R09: ffffed10118fee66 R10: ffffed10118fee65 R11: ffff88808c7f732b R12: 0000000000000001 R13: 0000000000000003 R14: ffffed10118fee65 R15: 0000000000000001 FS: 00007fb953b91700(0000) GS:ffff8880ae900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000070f07b CR3: 00000000a0830000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:654 [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] __dev_xmit_skb net/core/dev.c:3502 [inline] __dev_queue_xmit+0x14b8/0x3650 net/core/dev.c:3838 dev_queue_xmit+0x18/0x20 net/core/dev.c:3902 br_dev_queue_push_xmit+0x3f3/0x5c0 net/bridge/br_forward.c:52 NF_HOOK include/linux/netfilter.h:305 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] br_forward_finish+0xfa/0x400 net/bridge/br_forward.c:65 NF_HOOK include/linux/netfilter.h:305 [inline] NF_HOOK include/linux/netfilter.h:299 [inline] __br_forward+0x641/0xb00 net/bridge/br_forward.c:109 deliver_clone+0x61/0xc0 net/bridge/br_forward.c:125 maybe_deliver+0x2c7/0x390 net/bridge/br_forward.c:181 br_flood+0x13a/0x3d0 net/bridge/br_forward.c:223 br_dev_xmit+0x98c/0x15a0 net/bridge/br_device.c:100 __netdev_start_xmit include/linux/netdevice.h:4419 [inline] netdev_start_xmit include/linux/netdevice.h:4433 [inline] xmit_one net/core/dev.c:3280 [inline] dev_hard_start_xmit+0x1a3/0x9c0 net/core/dev.c:3296 __dev_queue_xmit+0x2b15/0x3650 net/core/dev.c:3869 dev_queue_xmit+0x18/0x20 net/core/dev.c:3902 neigh_hh_output include/net/neighbour.h:500 [inline] neigh_output include/net/neighbour.h:509 [inline] ip6_finish_output2+0xf58/0x2520 net/ipv6/ip6_output.c:116 __ip6_finish_output+0x444/0xa50 net/ipv6/ip6_output.c:142 ip6_finish_output+0x38/0x1f0 net/ipv6/ip6_output.c:152 NF_HOOK_COND include/linux/netfilter.h:294 [inline] ip6_output+0x235/0x7c0 net/ipv6/ip6_output.c:175 dst_output include/net/dst.h:436 [inline] NF_HOOK include/linux/netfilter.h:305 [inline] ndisc_send_skb+0xf29/0x1450 net/ipv6/ndisc.c:505 ndisc_send_rs+0x134/0x6d0 net/ipv6/ndisc.c:699 addrconf_rs_timer+0x30f/0x680 net/ipv6/addrconf.c:3879 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1322 expire_timers kernel/time/timer.c:1366 [inline] __run_timers kernel/time/timer.c:1685 [inline] __run_timers kernel/time/timer.c:1653 [inline] run_timer_softirq+0x697/0x17a0 kernel/time/timer.c:1698 __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:537 [inline] smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1133 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:830 RIP: 0010:__wake_up_bit+0x99/0x100 kernel/sched/wait_bit.c:125 Code: 31 c0 4c 89 e0 48 c7 45 90 00 00 00 00 48 c1 e8 03 48 c7 45 98 00 00 00 00 48 89 75 88 89 55 90 80 3c 08 00 75 54 49 8b 45 38 <49> 39 c4 74 16 48 8d 4d 88 ba 01 00 00 00 be 03 00 00 00 4c 89 ef RSP: 0018:ffff88808c72f5c8 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffffffff88e0d770 RBX: 1ffff110118e5eb9 RCX: dffffc0000000000 RDX: 0000000000000002 RSI: ffff88805b58b0a8 RDI: ffffffff88e0d738 RBP: ffff88808c72f660 R08: ffff88805b58b0a8 R09: ffffed100b6b1616 R10: ffffed100b6b1615 R11: ffff88805b58b0af R12: ffffffff88e0d770 R13: ffffffff88e0d738 R14: 0000000000001000 R15: 0000000000001000 wake_up_bit+0x3d/0x40 kernel/sched/wait_bit.c:149 unlock_buffer fs/buffer.c:74 [inline] discard_buffer fs/buffer.c:1439 [inline] block_invalidatepage+0x42a/0x650 fs/buffer.c:1490 ext4_invalidatepage+0x1f3/0x4f0 fs/ext4/inode.c:3399 ext4_da_invalidatepage+0x1bc/0x6f0 fs/ext4/inode.c:3243 do_invalidatepage mm/truncate.c:163 [inline] truncate_cleanup_page+0x328/0x680 mm/truncate.c:185 truncate_inode_pages_range+0x5f3/0x1740 mm/truncate.c:365 truncate_inode_pages+0x25/0x30 mm/truncate.c:476 swap_inode_boot_loader fs/ext4/ioctl.c:160 [inline] ext4_ioctl+0x1b0a/0x4120 fs/ext4/ioctl.c:990 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:509 [inline] do_vfs_ioctl+0xdb6/0x13e0 fs/ioctl.c:696 ksys_ioctl+0xab/0xd0 fs/ioctl.c:713 __do_sys_ioctl fs/ioctl.c:720 [inline] __se_sys_ioctl fs/ioctl.c:718 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:718 do_syscall_64+0xfd/0x6a0 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4598e9 Code: fd b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 0f 83 cb b7 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fb953b90c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00000000004598e9 RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000003 RBP: 000000000075c070 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb953b916d4 R13: 00000000004c1cdf R14: 00000000004d50e8 R15: 00000000ffffffff