watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.3:11013] Modules linked in: irq event stamp: 5437 hardirqs last enabled at (5436): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (5437): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (148): [] ipt_do_table+0xccf/0x1820 net/ipv4/netfilter/ip_tables.c:358 softirqs last disabled at (150): [] lwtunnel_xmit_redirect include/net/lwtunnel.h:92 [inline] softirqs last disabled at (150): [] ip_finish_output2+0x28d/0x15a0 net/ipv4/ip_output.c:214 CPU: 1 PID: 11013 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:lock_release+0x0/0x8b0 kernel/locking/lockdep.c:3917 Code: ff 48 c7 c7 40 f7 36 8d e8 fd 17 4d 00 4c 8b 4c 24 10 e9 9f fd ff ff 48 c7 c7 40 f7 36 8d e8 e7 17 4d 00 e9 dc fd ff ff 66 90 <48> b8 00 00 00 00 00 fc ff df 41 57 41 56 41 55 49 89 d5 41 54 55 RSP: 0018:ffff8880441f7098 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 0000000000040000 RBX: ffff8880abc40a40 RCX: ffffc90008936000 RDX: ffffffff868c9b16 RSI: 0000000000000001 RDI: ffff8880abc40ac8 RBP: ffff8880abc40ab0 R08: 0000000000008042 R09: 0000000000000002 R10: 0000000000000005 R11: 0000000000000000 R12: 1ffff1100883ee1b R13: 0000000000000006 R14: ffff8880abc40ab0 R15: 0000000000008042 FS: 00007f9351aeb700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b30325000 CR3: 0000000099cd4000 CR4: 00000000003406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __raw_spin_unlock include/linux/spinlock_api_smp.h:150 [inline] _raw_spin_unlock+0x17/0x40 kernel/locking/spinlock.c:176 spin_unlock include/linux/spinlock.h:369 [inline] tcf_police_act+0x786/0xe60 net/sched/act_police.c:268 tcf_action_exec net/sched/act_api.c:618 [inline] tcf_action_exec+0x160/0x400 net/sched/act_api.c:598 tcf_exts_exec include/net/pkt_cls.h:388 [inline] basic_classify+0x184/0x2b0 net/sched/cls_basic.c:52 tcf_classify+0x120/0x3c0 net/sched/cls_api.c:979 prio_classify net/sched/sch_prio.c:46 [inline] prio_enqueue+0x3bb/0x7a0 net/sched/sch_prio.c:78 __dev_xmit_skb net/core/dev.c:3494 [inline] __dev_queue_xmit+0x140a/0x2e00 net/core/dev.c:3807 neigh_hh_output include/net/neighbour.h:491 [inline] neigh_output include/net/neighbour.h:499 [inline] ip_finish_output2+0xb6d/0x15a0 net/ipv4/ip_output.c:230 ip_finish_output+0xae9/0x10b0 net/ipv4/ip_output.c:318 NF_HOOK_COND include/linux/netfilter.h:278 [inline] ip_output+0x203/0x5f0 net/ipv4/ip_output.c:406 dst_output include/net/dst.h:455 [inline] ip_local_out+0xaf/0x170 net/ipv4/ip_output.c:125 __ip_queue_xmit+0x91e/0x1c10 net/ipv4/ip_output.c:507 __tcp_transmit_skb+0x1b9c/0x3400 net/ipv4/tcp_output.c:1148 tcp_transmit_skb net/ipv4/tcp_output.c:1164 [inline] tcp_write_xmit+0x989/0x5100 net/ipv4/tcp_output.c:2391 tcp_sendmsg_locked+0x9c5/0x2f60 net/ipv4/tcp.c:1412 tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1462 inet_sendmsg+0x132/0x5a0 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:661 sock_write_iter+0x287/0x3c0 net/socket.c:966 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x51b/0x770 fs/read_write.c:487 vfs_write+0x1f3/0x540 fs/read_write.c:549 ksys_write+0x12b/0x2a0 fs/read_write.c:599 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f935359a0c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f9351aeb168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00007f93536ba050 RCX: 00007f935359a0c9 RDX: 000000000000fc30 RSI: 0000000020000480 RDI: 0000000000000004 RBP: 00007f93535f5ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcfbf8c66f R14: 00007f9351aeb300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60