Warning: Permanently added '10.128.0.46' (ECDSA) to the list of known hosts. 2019/10/22 23:43:32 fuzzer started 2019/10/22 23:43:32 dialing manager at 10.128.0.105:33369 2019/10/22 23:43:33 syscalls: 2524 2019/10/22 23:43:33 code coverage: enabled 2019/10/22 23:43:33 comparison tracing: enabled 2019/10/22 23:43:33 extra coverage: extra coverage is not supported by the kernel 2019/10/22 23:43:33 setuid sandbox: enabled 2019/10/22 23:43:33 namespace sandbox: enabled 2019/10/22 23:43:33 Android sandbox: /sys/fs/selinux/policy does not exist 2019/10/22 23:43:33 fault injection: enabled 2019/10/22 23:43:33 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/10/22 23:43:33 net packet injection: enabled 2019/10/22 23:43:33 net device setup: enabled 2019/10/22 23:43:33 concurrency sanitizer: enabled syzkaller login: [ 48.168488][ T7210] ================================================================== [ 48.176615][ T7210] BUG: KCSAN: data-race in __nf_ct_refresh_acct / __nf_ct_refresh_acct [ 48.184841][ T7210] [ 48.187193][ T7210] read to 0xffff888122a85408 of 4 bytes by interrupt on cpu 0: [ 48.194742][ T7210] __nf_ct_refresh_acct+0xd4/0x1b0 [ 48.199835][ T7210] nf_conntrack_tcp_packet+0xd40/0x3390 [ 48.205359][ T7210] nf_conntrack_in+0x410/0xa80 [ 48.210114][ T7210] ipv4_conntrack_in+0x27/0x40 [ 48.214860][ T7210] nf_hook_slow+0x83/0x160 [ 48.219270][ T7210] ip_rcv+0x12f/0x1a0 [ 48.223234][ T7210] __netif_receive_skb_one_core+0xa7/0xe0 [ 48.228930][ T7210] __netif_receive_skb+0x37/0xf0 [ 48.233845][ T7210] netif_receive_skb_internal+0x59/0x190 [ 48.239454][ T7210] napi_gro_receive+0x28f/0x330 [ 48.244282][ T7210] receive_buf+0x284/0x30b0 [ 48.248760][ T7210] virtnet_poll+0x436/0x7d0 [ 48.253327][ T7210] net_rx_action+0x3ae/0xa90 [ 48.257895][ T7210] __do_softirq+0x115/0x33f [ 48.262366][ T7210] [ 48.264676][ T7210] write to 0xffff888122a85408 of 4 bytes by task 7210 on cpu 1: [ 48.272285][ T7210] __nf_ct_refresh_acct+0xfb/0x1b0 [ 48.277378][ T7210] nf_conntrack_tcp_packet+0xd40/0x3390 [ 48.282899][ T7210] nf_conntrack_in+0x410/0xa80 [ 48.287652][ T7210] ipv4_conntrack_local+0xbe/0x130 [ 48.292743][ T7210] nf_hook_slow+0x83/0x160 [ 48.297135][ T7210] __ip_local_out+0x1f7/0x2b0 [ 48.301800][ T7210] ip_local_out+0x31/0x90 [ 48.306106][ T7210] __ip_queue_xmit+0x3a8/0xa40 [ 48.310845][ T7210] ip_queue_xmit+0x45/0x60 [ 48.315237][ T7210] __tcp_transmit_skb+0xe81/0x1d60 [ 48.320323][ T7210] __tcp_send_ack+0x246/0x300 [ 48.324987][ T7210] tcp_send_ack+0x34/0x40 [ 48.329717][ T7210] tcp_cleanup_rbuf+0x130/0x360 [ 48.334538][ T7210] [ 48.336843][ T7210] Reported by Kernel Concurrency Sanitizer on: [ 48.342988][ T7210] CPU: 1 PID: 7210 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0 [ 48.350414][ T7210] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.360455][ T7210] ================================================================== [ 48.368503][ T7210] Kernel panic - not syncing: panic_on_warn set ... [ 48.375071][ T7210] CPU: 1 PID: 7210 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0 [ 48.382501][ T7210] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.392542][ T7210] Call Trace: [ 48.395812][ T7210] dump_stack+0xf5/0x159 [ 48.400032][ T7210] panic+0x210/0x640 [ 48.403920][ T7210] ? ip_queue_xmit+0x45/0x60 [ 48.408485][ T7210] ? vprintk_func+0x8d/0x140 [ 48.413053][ T7210] kcsan_report.cold+0xc/0x10 [ 48.417711][ T7210] __kcsan_setup_watchpoint+0x32e/0x4a0 [ 48.423234][ T7210] __tsan_write4+0x32/0x40 [ 48.427628][ T7210] __nf_ct_refresh_acct+0xfb/0x1b0 [ 48.432716][ T7210] nf_conntrack_tcp_packet+0xd40/0x3390 [ 48.438247][ T7210] ? __kcsan_setup_watchpoint+0x6b/0x4a0 [ 48.443860][ T7210] nf_conntrack_in+0x410/0xa80 [ 48.448605][ T7210] ipv4_conntrack_local+0xbe/0x130 [ 48.453697][ T7210] nf_hook_slow+0x83/0x160 [ 48.458176][ T7210] ? nf_ct_tcp_fixup+0xe0/0xe0 [ 48.462918][ T7210] __ip_local_out+0x1f7/0x2b0 [ 48.467574][ T7210] ? constant_test_bit+0x30/0x30 [ 48.472491][ T7210] ip_local_out+0x31/0x90 [ 48.476800][ T7210] __ip_queue_xmit+0x3a8/0xa40 [ 48.481548][ T7210] ip_queue_xmit+0x45/0x60 [ 48.485949][ T7210] __tcp_transmit_skb+0xe81/0x1d60 [ 48.491044][ T7210] __tcp_send_ack+0x246/0x300 [ 48.495702][ T7210] tcp_send_ack+0x34/0x40 [ 48.500014][ T7210] tcp_cleanup_rbuf+0x130/0x360 [ 48.505280][ T7210] tcp_recvmsg+0x633/0x1a30 [ 48.509780][ T7210] inet_recvmsg+0xbb/0x250 [ 48.514175][ T7210] ? __tsan_read8+0x2c/0x30 [ 48.518660][ T7210] ? inet_sendpage+0x100/0x100 [ 48.523416][ T7210] sock_recvmsg+0x92/0xb0 [ 48.527743][ T7210] sock_read_iter+0x15f/0x1e0 [ 48.532416][ T7210] new_sync_read+0x389/0x4f0 [ 48.537002][ T7210] __vfs_read+0xb1/0xc0 [ 48.541141][ T7210] vfs_read+0x143/0x2c0 [ 48.545278][ T7210] ksys_read+0xd5/0x1b0 [ 48.549427][ T7210] __x64_sys_read+0x4c/0x60 [ 48.553919][ T7210] do_syscall_64+0xcc/0x370 [ 48.558408][ T7210] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 48.564288][ T7210] RIP: 0033:0x47c530 [ 48.568170][ T7210] Code: 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 49 c7 c2 00 00 00 00 49 c7 c0 00 00 00 00 49 c7 c1 00 00 00 00 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 48.587866][ T7210] RSP: 002b:000000c4201c77d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000000 [ 48.596258][ T7210] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530 [ 48.604208][ T7210] RDX: 0000000000001000 RSI: 000000c420168000 RDI: 0000000000000003 [ 48.612180][ T7210] RBP: 000000c4201c7828 R08: 0000000000000000 R09: 0000000000000000 [ 48.620129][ T7210] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004 [ 48.628078][ T7210] R13: ffffffffffffffff R14: 0000000000000008 R15: ffffffffffffffff [ 48.637218][ T7210] Kernel Offset: disabled [ 48.641535][ T7210] Rebooting in 86400 seconds..