watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.4:14945] Modules linked in: irq event stamp: 3325185 hardirqs last enabled at (3325184): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (3325185): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (30858): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (32063): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (32063): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 1 PID: 14945 Comm: syz-executor.4 Not tainted 4.19.184-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:debug_lockdep_rcu_enabled+0x35/0xe0 kernel/rcu/update.c:253 Code: 00 00 00 00 fc ff df 48 89 c1 83 e0 07 48 c1 e9 03 83 c0 03 0f b6 14 11 38 d0 7c 08 84 d2 0f 85 87 00 00 00 8b 35 6f 64 d6 09 <85> f6 74 79 48 c7 c0 00 ea 45 8a 48 ba 00 00 00 00 00 fc ff df 48 RSP: 0018:ffff8880ba1074e0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000007 RBX: ffff88803ac3a368 RCX: 1ffffffff164dc18 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000286 RBP: 0000000021f6f5f6 R08: 0000000058abd5ee R09: 0000000000000005 R10: ffff888043cdef10 R11: 0000000000000000 R12: ffffffff895062e0 R13: dffffc0000000000 R14: ffff888045cf0100 R15: ffff8880ba107730 FS: 00007ff80caaf700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd19ea63fc8 CR3: 00000000a0586000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_read_lock include/linux/rcupdate.h:628 [inline] __nf_conntrack_find_get+0xbf/0x1740 net/netfilter/nf_conntrack_core.c:748 resolve_normal_ct net/netfilter/nf_conntrack_core.c:1526 [inline] nf_conntrack_in+0x444/0xe20 net/netfilter/nf_conntrack_core.c:1606 nf_hook_entry_hookfn include/linux/netfilter.h:119 [inline] nf_hook_slow+0xc5/0x1e0 net/netfilter/core.c:511 nf_hook include/linux/netfilter.h:244 [inline] NF_HOOK include/linux/netfilter.h:287 [inline] ip6_xmit+0x1229/0x20a0 net/ipv6/ip6_output.c:313 inet6_csk_xmit+0x2fb/0x5c0 net/ipv6/inet6_connection_sock.c:139 __tcp_transmit_skb+0x1bb2/0x33f0 net/ipv4/tcp_output.c:1148 tcp_transmit_skb net/ipv4/tcp_output.c:1164 [inline] tcp_write_wakeup+0x4f1/0x610 net/ipv4/tcp_output.c:3728 tcp_send_probe0+0x46/0x400 net/ipv4/tcp_output.c:3750 tcp_probe_timer net/ipv4/tcp_timer.c:385 [inline] tcp_write_timer_handler+0x8c2/0xa60 net/ipv4/tcp_timer.c:602 tcp_write_timer+0x103/0x1b0 net/ipv4/tcp_timer.c:618 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375 __run_timers kernel/time/timer.c:1696 [inline] run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709 __do_softirq+0x265/0x980 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:535 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:qlink_free mm/kasan/quarantine.c:150 [inline] RIP: 0010:qlist_free_all+0xfc/0x140 mm/kasan/quarantine.c:166 Code: 50 08 48 8d 4a ff 83 e2 01 48 0f 45 c1 4c 8b 70 18 e9 40 ff ff ff e8 e3 56 cf ff 48 83 3d 63 53 59 08 00 74 38 4c 89 ff 57 9d <0f> 1f 44 00 00 4d 85 e4 75 9e 49 c7 45 08 00 00 00 00 49 c7 45 00 RSP: 0018:ffff8880479d79f8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000007 RBX: ffff888046842800 RCX: 0000000000000000 RDX: 0000000000000000 RSI: ffff888043cdee48 RDI: 0000000000000286 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888094551000 R13: ffff8880479d7a30 R14: ffff88813bff0940 R15: 0000000000000286 quarantine_reduce+0x1a9/0x230 mm/kasan/quarantine.c:259 kasan_kmalloc+0xa2/0x160 mm/kasan/kasan.c:538 slab_post_alloc_hook mm/slab.h:445 [inline] slab_alloc mm/slab.c:3397 [inline] __do_kmalloc mm/slab.c:3725 [inline] __kmalloc+0x144/0x3c0 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] sk_prot_alloc+0x1e2/0x2d0 net/core/sock.c:1466 sk_alloc+0x36/0xec0 net/core/sock.c:1520 __netlink_create+0x63/0x270 net/netlink/af_netlink.c:643 netlink_create+0x3a1/0x5d0 net/netlink/af_netlink.c:706 __sock_create+0x3d8/0x740 net/socket.c:1276 sock_create net/socket.c:1316 [inline] __sys_socket+0xef/0x200 net/socket.c:1346 __do_sys_socket net/socket.c:1355 [inline] __se_sys_socket net/socket.c:1353 [inline] __x64_sys_socket+0x6f/0xb0 net/socket.c:1353 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x466459 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff80caaf188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 000000000056bf60 RCX: 0000000000466459 RDX: 0000000000000000 RSI: 0000000000000803 RDI: 0000000000000010 RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056bf60 R13: 00007ffc4cba2fdf R14: 00007ff80caaf300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 14965 Comm: syz-executor.4 Not tainted 4.19.184-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:ip_rcv_core+0x3db/0xc90 net/ipv4/ip_input.c:467 Code: 38 c2 7c 09 45 84 c0 0f 85 f7 05 00 00 66 83 79 06 00 ba 01 00 00 00 66 0f 45 51 06 4c 89 f9 48 c1 e9 03 0f b7 d2 65 48 01 16 <48> ba 00 00 00 00 00 fc ff df 0f b6 14 11 4c 89 f9 83 e1 07 38 ca RSP: 0018:ffff8880ba007bf8 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffff888036f70940 RCX: 1ffff11003276392 RDX: 0000000000000001 RSI: 0000607f45c7b418 RDI: ffff8880193b1d46 RBP: ffff8880193b0e00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff8880193b0e84 R13: ffff8880193b0e80 R14: ffff8880193b0ec4 R15: ffff8880193b1c90 FS: 00007ff80ca8e700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000201e3000 CR3: 00000000a0586000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ip_rcv+0x9d/0x3c0 net/ipv4/ip_input.c:521 __netif_receive_skb_one_core+0x114/0x180 net/core/dev.c:4954 __netif_receive_skb+0x27/0x1c0 net/core/dev.c:5066 process_backlog+0x241/0x700 net/core/dev.c:5848 napi_poll net/core/dev.c:6272 [inline] net_rx_action+0x4ac/0xfb0 net/core/dev.c:6338 __do_softirq+0x265/0x980 kernel/softirq.c:292 do_softirq_own_stack+0x2a/0x40 arch/x86/entry/entry_64.S:1092 do_softirq.part.0+0x160/0x1c0 kernel/softirq.c:336 do_softirq kernel/softirq.c:328 [inline] __local_bh_enable_ip+0x20e/0x270 kernel/softirq.c:189 local_bh_enable include/linux/bottom_half.h:32 [inline] rcu_read_unlock_bh include/linux/rcupdate.h:721 [inline] ip_finish_output2+0xde2/0x15a0 net/ipv4/ip_output.c:232 ip_do_fragment+0xe73/0x22c0 net/ipv4/ip_output.c:815 ip_fragment.constprop.0+0x174/0x240 net/ipv4/ip_output.c:551 ip_finish_output+0x7a4/0xd20 net/ipv4/ip_output.c:316 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+0x866/0x1b50 net/ipv4/ip_output.c:506 __tcp_transmit_skb+0x1bb2/0x33f0 net/ipv4/tcp_output.c:1148 tcp_transmit_skb net/ipv4/tcp_output.c:1164 [inline] tcp_write_xmit+0x989/0x50f0 net/ipv4/tcp_output.c:2390 __tcp_push_pending_frames+0xae/0x310 net/ipv4/tcp_output.c:2571 tcp_push+0x4b7/0x6b0 net/ipv4/tcp.c:745 tcp_sendmsg_locked+0x1553/0x2f60 net/ipv4/tcp.c:1419 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:622 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:632 ___sys_sendmsg+0x7bb/0x8e0 net/socket.c:2115 __sys_sendmsg net/socket.c:2153 [inline] __do_sys_sendmsg net/socket.c:2162 [inline] __se_sys_sendmsg net/socket.c:2160 [inline] __x64_sys_sendmsg+0x132/0x220 net/socket.c:2160 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x466459 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 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ff80ca8e188 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 000000000056c008 RCX: 0000000000466459 RDX: 0000000000000003 RSI: 0000000020000600 RDI: 0000000000000004 RBP: 00000000004bf9fb R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c008 R13: 00007ffc4cba2fdf R14: 00007ff80ca8e300 R15: 0000000000022000