watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.0:10296] Modules linked in: irq event stamp: 6053 hardirqs last enabled at (6052): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (6053): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (728): [] ipt_do_table+0xccf/0x1820 net/ipv4/netfilter/ip_tables.c:358 softirqs last disabled at (730): [] lwtunnel_xmit_redirect include/net/lwtunnel.h:92 [inline] softirqs last disabled at (730): [] ip_finish_output2+0x28d/0x15a0 net/ipv4/ip_output.c:214 CPU: 1 PID: 10296 Comm: syz-executor.0 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:lock_release+0x429/0x8b0 kernel/locking/lockdep.c:3930 Code: 84 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 95 03 00 00 48 83 3d 7b 34 a6 08 00 0f 84 cc 01 00 00 48 8b 3c 24 57 9d <0f> 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 49 c7 04 04 00 00 00 RSP: 0018:ffff88805cc87258 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff13e3051 RBX: ffff888091a62040 RCX: 1ffff1101234c52d RDX: dffffc0000000000 RSI: 0000000000000005 RDI: 0000000000000286 RBP: 0000000000000004 R08: 0000000000000024 R09: 0000000000000004 R10: 0000000000000000 R11: 0000000000074071 R12: 1ffff1100b990e4e R13: 8d9ab09f31fda7c6 R14: ffff888091a62040 R15: 0000000000000005 FS: 00007f01d38a6700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc29b62d058 CR3: 000000009ed7a000 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] 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: 0033:0x7f01d4f520e9 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:00007f01d38a6168 EFLAGS: 00000246 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 00007f01d5065030 RCX: 00007f01d4f520e9 RDX: 0000000000000002 RSI: 0000000020000200 RDI: 000000000000000a RBP: 00007f01d4fac08d R08: 0000000020000100 R09: 0000000000000010 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe8a519a1f R14: 00007f01d38a6300 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 ---------------- Code disassembly (best guess): 0: 84 08 test %cl,(%rax) 2: 00 00 add %al,(%rax) 4: 00 00 add %al,(%rax) 6: 00 00 add %al,(%rax) 8: 48 c1 e8 03 shr $0x3,%rax c: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1) 10: 0f 85 95 03 00 00 jne 0x3ab 16: 48 83 3d 7b 34 a6 08 cmpq $0x0,0x8a6347b(%rip) # 0x8a63499 1d: 00 1e: 0f 84 cc 01 00 00 je 0x1f0 24: 48 8b 3c 24 mov (%rsp),%rdi 28: 57 push %rdi 29: 9d popfq * 2a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) <-- trapping instruction 2f: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 36: fc ff df 39: 49 rex.WB 3a: c7 .byte 0xc7 3b: 04 04 add $0x4,%al 3d: 00 00 add %al,(%rax)