watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.1:32651] Modules linked in: irq event stamp: 6289 hardirqs last enabled at (6288): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (6289): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (1266): [] ipt_do_table+0xccf/0x1820 net/ipv4/netfilter/ip_tables.c:358 softirqs last disabled at (1274): [] lwtunnel_xmit_redirect include/net/lwtunnel.h:92 [inline] softirqs last disabled at (1274): [] ip_finish_output2+0x28d/0x15a0 net/ipv4/ip_output.c:214 CPU: 0 PID: 32651 Comm: syz-executor.1 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022 RIP: 0010:lock_release+0x84/0x8b0 kernel/locking/lockdep.c:3920 Code: f1 f1 c7 42 04 04 f3 f3 f3 48 89 fa 65 48 8b 34 25 28 00 00 00 48 89 74 24 70 31 f6 48 c1 ea 03 0f b6 14 02 48 89 f8 83 e0 07 <83> c0 03 38 d0 7c 08 84 d2 0f 85 d0 05 00 00 44 8b 93 84 08 00 00 RSP: 0018:ffff88804599f258 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000004 RBX: ffff8880a1be41c0 RCX: ffffc90009d40000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff8880a1be4a44 RBP: ffff8880a8e1d608 R08: 0000000000000073 R09: 0000000000000002 R10: 0000000000000005 R11: 0000000000074071 R12: 1ffff11008b33e4e R13: ffffffff868c9b16 R14: ffff8880a8e1d5f0 R15: 0000000000000073 FS: 00007fd23d2c8700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f121000 CR3: 00000000a8ecf000 CR4: 00000000003406f0 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] route4_classify+0x8d6/0x1420 net/sched/cls_route.c:183 tcf_classify+0x120/0x3c0 net/sched/cls_api.c:979 drr_classify net/sched/sch_drr.c:329 [inline] drr_enqueue+0x39e/0x8c0 net/sched/sch_drr.c:357 __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_send_skb net/ipv4/ip_output.c:1452 [inline] ip_push_pending_frames+0x8b/0x140 net/ipv4/ip_output.c:1472 raw_sendmsg+0x1e9d/0x29e0 net/ipv4/raw.c:677 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 __sys_sendto+0x21a/0x320 net/socket.c:1899 __do_sys_sendto net/socket.c:1911 [inline] __se_sys_sendto net/socket.c:1907 [inline] __x64_sys_sendto+0xdd/0x1b0 net/socket.c:1907 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fd23ed555a9 Code: ff ff c3 66 2e 0f 1f 84 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 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fd23d2c8168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007fd23ee75f80 RCX: 00007fd23ed555a9 RDX: 0000000000000051 RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 00007fd23edb07b0 R08: 0000000020000180 R09: 0000000000000010 R10: 0000000000000080 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffce6090bdf R14: 00007fd23d2c8300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:60