Warning: Permanently added '10.128.0.95' (ECDSA) to the list of known hosts. 2019/10/30 20:48:18 fuzzer started 2019/10/30 20:48:20 dialing manager at 10.128.0.105:37477 2019/10/30 20:48:20 syscalls: 2540 2019/10/30 20:48:20 code coverage: enabled 2019/10/30 20:48:20 comparison tracing: enabled 2019/10/30 20:48:20 extra coverage: extra coverage is not supported by the kernel 2019/10/30 20:48:20 setuid sandbox: enabled 2019/10/30 20:48:20 namespace sandbox: enabled 2019/10/30 20:48:20 Android sandbox: /sys/fs/selinux/policy does not exist 2019/10/30 20:48:20 fault injection: enabled 2019/10/30 20:48:20 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/10/30 20:48:20 net packet injection: enabled 2019/10/30 20:48:20 net device setup: enabled 2019/10/30 20:48:20 concurrency sanitizer: enabled 2019/10/30 20:48:23 adding functions to KCSAN blacklist: '__tcp_select_window' 'pid_update_inode' 'find_next_bit' 'do_nanosleep' '__hrtimer_run_queues' 'mod_timer' 'tomoyo_supervisor' 'tcp_add_backlog' 'tick_do_update_jiffies64' syzkaller login: [ 53.271793][ T7348] ================================================================== [ 53.280935][ T7348] BUG: KCSAN: data-race in __nf_conntrack_find_get / __nf_ct_refresh_acct [ 53.289509][ T7348] [ 53.291827][ T7348] read to 0xffff888122641008 of 4 bytes by interrupt on cpu 0: [ 53.299461][ T7348] __nf_conntrack_find_get+0x284/0x880 [ 53.305004][ T7348] nf_conntrack_in+0x2ef/0xa80 [ 53.309880][ T7348] ipv4_conntrack_in+0x27/0x40 [ 53.314846][ T7348] nf_hook_slow+0x83/0x160 [ 53.319875][ T7348] ip_rcv+0x12f/0x1a0 [ 53.323867][ T7348] __netif_receive_skb_one_core+0xa7/0xe0 [ 53.329579][ T7348] __netif_receive_skb+0x37/0xf0 [ 53.334587][ T7348] netif_receive_skb_internal+0x59/0x190 [ 53.340419][ T7348] napi_gro_receive+0x28f/0x330 [ 53.345254][ T7348] receive_buf+0x284/0x30b0 [ 53.349827][ T7348] virtnet_poll+0x436/0x7d0 [ 53.354356][ T7348] net_rx_action+0x3ae/0xa90 [ 53.359007][ T7348] __do_softirq+0x115/0x33f [ 53.363601][ T7348] run_ksoftirqd+0x46/0x60 [ 53.368609][ T7348] [ 53.370929][ T7348] write to 0xffff888122641008 of 4 bytes by task 7348 on cpu 1: [ 53.379097][ T7348] __nf_ct_refresh_acct+0xfb/0x1b0 [ 53.384304][ T7348] nf_conntrack_tcp_packet+0xd40/0x3390 [ 53.390137][ T7348] nf_conntrack_in+0x410/0xa80 [ 53.395096][ T7348] ipv4_conntrack_local+0xbe/0x130 [ 53.400634][ T7348] nf_hook_slow+0x83/0x160 [ 53.405296][ T7348] __ip_local_out+0x1f7/0x2b0 [ 53.410043][ T7348] ip_local_out+0x31/0x90 [ 53.414560][ T7348] __ip_queue_xmit+0x3a8/0xa40 [ 53.419535][ T7348] ip_queue_xmit+0x45/0x60 [ 53.424285][ T7348] __tcp_transmit_skb+0xe81/0x1d60 [ 53.429378][ T7348] __tcp_send_ack+0x246/0x300 [ 53.434127][ T7348] tcp_send_ack+0x34/0x40 [ 53.438717][ T7348] tcp_cleanup_rbuf+0x130/0x360 [ 53.444765][ T7348] [ 53.447168][ T7348] Reported by Kernel Concurrency Sanitizer on: [ 53.453480][ T7348] CPU: 1 PID: 7348 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0 [ 53.461126][ T7348] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.471541][ T7348] ================================================================== [ 53.481150][ T7348] Kernel panic - not syncing: panic_on_warn set ... [ 53.488802][ T7348] CPU: 1 PID: 7348 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0 [ 53.496339][ T7348] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.506465][ T7348] Call Trace: [ 53.509935][ T7348] dump_stack+0xf5/0x159 [ 53.514161][ T7348] panic+0x210/0x640 [ 53.518190][ T7348] ? ip_queue_xmit+0x45/0x60 [ 53.522957][ T7348] ? vprintk_func+0x8d/0x140 [ 53.527540][ T7348] kcsan_report.cold+0xc/0x10 [ 53.532214][ T7348] __kcsan_setup_watchpoint+0x32e/0x4a0 [ 53.537783][ T7348] __tsan_write4+0x32/0x40 [ 53.542278][ T7348] __nf_ct_refresh_acct+0xfb/0x1b0 [ 53.547609][ T7348] nf_conntrack_tcp_packet+0xd40/0x3390 [ 53.553172][ T7348] ? __kcsan_setup_watchpoint+0x6b/0x4a0 [ 53.558943][ T7348] nf_conntrack_in+0x410/0xa80 [ 53.564100][ T7348] ipv4_conntrack_local+0xbe/0x130 [ 53.569302][ T7348] nf_hook_slow+0x83/0x160 [ 53.573981][ T7348] ? nf_ct_tcp_fixup+0xe0/0xe0 [ 53.578740][ T7348] __ip_local_out+0x1f7/0x2b0 [ 53.583420][ T7348] ? constant_test_bit+0x30/0x30 [ 53.588429][ T7348] ip_local_out+0x31/0x90 [ 53.592934][ T7348] __ip_queue_xmit+0x3a8/0xa40 [ 53.597701][ T7348] ip_queue_xmit+0x45/0x60 [ 53.602277][ T7348] __tcp_transmit_skb+0xe81/0x1d60 [ 53.607381][ T7348] __tcp_send_ack+0x246/0x300 [ 53.612130][ T7348] tcp_send_ack+0x34/0x40 [ 53.616451][ T7348] tcp_cleanup_rbuf+0x130/0x360 [ 53.621291][ T7348] tcp_recvmsg+0x633/0x1a30 [ 53.625794][ T7348] inet_recvmsg+0xbb/0x250 [ 53.630291][ T7348] ? __tsan_read8+0x2c/0x30 [ 53.635073][ T7348] ? inet_sendpage+0x100/0x100 [ 53.640072][ T7348] sock_recvmsg+0x92/0xb0 [ 53.644493][ T7348] sock_read_iter+0x15f/0x1e0 [ 53.649187][ T7348] new_sync_read+0x389/0x4f0 [ 53.653789][ T7348] __vfs_read+0xb1/0xc0 [ 53.657929][ T7348] vfs_read+0x143/0x2c0 [ 53.662075][ T7348] ksys_read+0xd5/0x1b0 [ 53.666220][ T7348] __x64_sys_read+0x4c/0x60 [ 53.670745][ T7348] do_syscall_64+0xcc/0x370 [ 53.675351][ T7348] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 53.681259][ T7348] RIP: 0033:0x47c530 [ 53.685153][ T7348] 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 [ 53.705043][ T7348] RSP: 002b:000000c4203797d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000 [ 53.713656][ T7348] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530 [ 53.721630][ T7348] RDX: 0000000000001000 RSI: 000000c4203f8000 RDI: 0000000000000003 [ 53.729702][ T7348] RBP: 000000c420379830 R08: 0000000000000000 R09: 0000000000000000 [ 53.737954][ T7348] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000008 [ 53.745948][ T7348] R13: ffffffffffffffff R14: 0000000000000002 R15: ffffffffffffffff [ 53.756267][ T7348] Kernel Offset: disabled [ 53.760626][ T7348] Rebooting in 86400 seconds..