Warning: Permanently added '10.128.0.212' (ECDSA) to the list of known hosts. 2019/10/04 12:31:13 fuzzer started 2019/10/04 12:31:15 dialing manager at 10.128.0.105:38119 2019/10/04 12:31:15 syscalls: 2523 2019/10/04 12:31:15 code coverage: enabled 2019/10/04 12:31:15 comparison tracing: enabled 2019/10/04 12:31:15 extra coverage: extra coverage is not supported by the kernel 2019/10/04 12:31:15 setuid sandbox: enabled 2019/10/04 12:31:15 namespace sandbox: enabled 2019/10/04 12:31:15 Android sandbox: /sys/fs/selinux/policy does not exist 2019/10/04 12:31:15 fault injection: enabled 2019/10/04 12:31:15 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/10/04 12:31:15 net packet injection: enabled 2019/10/04 12:31:15 net device setup: enabled 2019/10/04 12:31:15 concurrency sanitizer: enabled syzkaller login: [ 48.251501][ T7271] ================================================================== [ 48.259749][ T7271] BUG: KCSAN: data-race in __nf_conntrack_find_get+0x284/0x870 and __nf_ct_refresh_acct+0xfb/0x1b0 [ 48.270433][ T7271] [ 48.272742][ T7271] read to 0xffff888124de4d08 of 4 bytes by interrupt on cpu 1: [ 48.280301][ T7271] __nf_conntrack_find_get+0x284/0x870 [ 48.285747][ T7271] nf_conntrack_in+0x2ef/0xaa0 [ 48.290484][ T7271] ipv4_conntrack_in+0x27/0x40 [ 48.295241][ T7271] nf_hook_slow+0x83/0x160 [ 48.299646][ T7271] ip_rcv+0x12f/0x1a0 [ 48.303611][ T7271] __netif_receive_skb_one_core+0xa7/0xe0 [ 48.309326][ T7271] __netif_receive_skb+0x37/0xf0 [ 48.314239][ T7271] netif_receive_skb_internal+0x59/0x190 [ 48.319843][ T7271] napi_gro_receive+0x28f/0x330 [ 48.324677][ T7271] receive_buf+0x284/0x30b0 [ 48.329170][ T7271] virtnet_poll+0x436/0x7d0 [ 48.333653][ T7271] net_rx_action+0x3ae/0xa50 [ 48.338218][ T7271] __do_softirq+0x115/0x33f [ 48.342697][ T7271] irq_exit+0xbb/0xe0 [ 48.346658][ T7271] [ 48.348965][ T7271] write to 0xffff888124de4d08 of 4 bytes by task 7271 on cpu 0: [ 48.356566][ T7271] __nf_ct_refresh_acct+0xfb/0x1b0 [ 48.361668][ T7271] nf_conntrack_tcp_packet+0xd40/0x3390 [ 48.367196][ T7271] nf_conntrack_in+0x410/0xaa0 [ 48.371934][ T7271] ipv4_conntrack_local+0xbe/0x130 [ 48.377028][ T7271] nf_hook_slow+0x83/0x160 [ 48.381427][ T7271] __ip_local_out+0x1f7/0x2b0 [ 48.386087][ T7271] ip_local_out+0x31/0x90 [ 48.390391][ T7271] __ip_queue_xmit+0x3a8/0xa40 [ 48.395136][ T7271] ip_queue_xmit+0x45/0x60 [ 48.399528][ T7271] __tcp_transmit_skb+0xdeb/0x1cd0 [ 48.404613][ T7271] __tcp_send_ack+0x246/0x300 [ 48.409273][ T7271] tcp_send_ack+0x34/0x40 [ 48.413579][ T7271] tcp_cleanup_rbuf+0x130/0x360 [ 48.418398][ T7271] [ 48.420700][ T7271] Reported by Kernel Concurrency Sanitizer on: [ 48.426827][ T7271] CPU: 0 PID: 7271 Comm: syz-fuzzer Not tainted 5.3.0+ #0 [ 48.433914][ T7271] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.443941][ T7271] ================================================================== [ 48.451974][ T7271] Kernel panic - not syncing: panic_on_warn set ... [ 48.458550][ T7271] CPU: 0 PID: 7271 Comm: syz-fuzzer Not tainted 5.3.0+ #0 [ 48.465634][ T7271] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 48.475672][ T7271] Call Trace: [ 48.478944][ T7271] dump_stack+0xf5/0x159 [ 48.483166][ T7271] panic+0x209/0x639 [ 48.487057][ T7271] ? vprintk_func+0x8d/0x140 [ 48.491727][ T7271] kcsan_report.cold+0x57/0xeb [ 48.496469][ T7271] __kcsan_setup_watchpoint+0x342/0x500 [ 48.501989][ T7271] __tsan_write4+0x32/0x40 [ 48.506380][ T7271] __nf_ct_refresh_acct+0xfb/0x1b0 [ 48.511476][ T7271] nf_conntrack_tcp_packet+0xd40/0x3390 [ 48.517008][ T7271] nf_conntrack_in+0x410/0xaa0 [ 48.521752][ T7271] ipv4_conntrack_local+0xbe/0x130 [ 48.526843][ T7271] nf_hook_slow+0x83/0x160 [ 48.531237][ T7271] ? nf_ct_tcp_fixup+0xe0/0xe0 [ 48.535977][ T7271] __ip_local_out+0x1f7/0x2b0 [ 48.540631][ T7271] ? constant_test_bit+0x30/0x30 [ 48.545546][ T7271] ip_local_out+0x31/0x90 [ 48.549855][ T7271] __ip_queue_xmit+0x3a8/0xa40 [ 48.554601][ T7271] ip_queue_xmit+0x45/0x60 [ 48.559003][ T7271] __tcp_transmit_skb+0xdeb/0x1cd0 [ 48.564097][ T7271] __tcp_send_ack+0x246/0x300 [ 48.568759][ T7271] tcp_send_ack+0x34/0x40 [ 48.573064][ T7271] tcp_cleanup_rbuf+0x130/0x360 [ 48.577891][ T7271] tcp_recvmsg+0x633/0x1a30 [ 48.582390][ T7271] inet_recvmsg+0xbb/0x250 [ 48.586782][ T7271] ? __tsan_read8+0x2c/0x30 [ 48.591261][ T7271] ? inet_sendpage+0x100/0x100 [ 48.596002][ T7271] sock_recvmsg+0x92/0xb0 [ 48.600309][ T7271] sock_read_iter+0x15f/0x1e0 [ 48.604966][ T7271] new_sync_read+0x389/0x4f0 [ 48.609536][ T7271] __vfs_read+0xb1/0xc0 [ 48.613670][ T7271] vfs_read+0x143/0x2c0 [ 48.617804][ T7271] ksys_read+0xd5/0x1b0 [ 48.621938][ T7271] __x64_sys_read+0x4c/0x60 [ 48.626417][ T7271] do_syscall_64+0xcf/0x2f0 [ 48.630902][ T7271] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 48.636768][ T7271] RIP: 0033:0x47c530 [ 48.640640][ T7271] 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 [ 48.660217][ T7271] RSP: 002b:000000c4203a57d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 48.668609][ T7271] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530 [ 48.676595][ T7271] RDX: 0000000000001000 RSI: 000000c420134000 RDI: 0000000000000003 [ 48.684543][ T7271] RBP: 000000c4203a5830 R08: 0000000000000000 R09: 0000000000000000 [ 48.692490][ T7271] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000010 [ 48.700490][ T7271] R13: ffffffffffffffff R14: 0000000000000002 R15: ffffffffffffffff [ 48.709591][ T7271] Kernel Offset: disabled [ 48.713920][ T7271] Rebooting in 86400 seconds..