Warning: Permanently added '10.128.0.150' (ECDSA) to the list of known hosts. 2019/10/29 04:09:12 fuzzer started 2019/10/29 04:09:14 dialing manager at 10.128.0.105:40771 2019/10/29 04:09:14 syscalls: 2540 2019/10/29 04:09:14 code coverage: enabled 2019/10/29 04:09:14 comparison tracing: enabled 2019/10/29 04:09:14 extra coverage: extra coverage is not supported by the kernel 2019/10/29 04:09:14 setuid sandbox: enabled 2019/10/29 04:09:14 namespace sandbox: enabled 2019/10/29 04:09:14 Android sandbox: /sys/fs/selinux/policy does not exist 2019/10/29 04:09:14 fault injection: enabled 2019/10/29 04:09:14 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/10/29 04:09:14 net packet injection: enabled 2019/10/29 04:09:14 net device setup: enabled 2019/10/29 04:09:14 concurrency sanitizer: enabled 2019/10/29 04:09:15 adding functions to KCSAN blacklist: 'task_dump_owner' 'generic_permission' 'do_nanosleep' '__hrtimer_run_queues' 'do_exit' syzkaller login: [ 51.684907][ T7227] ================================================================== [ 51.693070][ T7227] BUG: KCSAN: data-race in __nf_conntrack_find_get / __nf_ct_refresh_acct [ 51.702094][ T7227] [ 51.704419][ T7227] read to 0xffff88811fd73808 of 4 bytes by interrupt on cpu 0: [ 51.711953][ T7227] __nf_conntrack_find_get+0x284/0x880 [ 51.717404][ T7227] nf_conntrack_in+0x2ef/0xa80 [ 51.722153][ T7227] ipv4_conntrack_in+0x27/0x40 [ 51.726991][ T7227] nf_hook_slow+0x83/0x160 [ 51.731393][ T7227] ip_rcv+0x12f/0x1a0 [ 51.735442][ T7227] __netif_receive_skb_one_core+0xa7/0xe0 [ 51.741145][ T7227] __netif_receive_skb+0x37/0xf0 [ 51.746066][ T7227] netif_receive_skb_internal+0x59/0x190 [ 51.751723][ T7227] napi_gro_receive+0x28f/0x330 [ 51.756560][ T7227] receive_buf+0x284/0x30b0 [ 51.761045][ T7227] virtnet_poll+0x436/0x7d0 [ 51.765631][ T7227] net_rx_action+0x3ae/0xa90 [ 51.770209][ T7227] __do_softirq+0x115/0x33f [ 51.774697][ T7227] irq_exit+0xbb/0xe0 [ 51.778657][ T7227] [ 51.781001][ T7227] write to 0xffff88811fd73808 of 4 bytes by task 7227 on cpu 1: [ 51.788664][ T7227] __nf_ct_refresh_acct+0xfb/0x1b0 [ 51.793762][ T7227] nf_conntrack_tcp_packet+0xd40/0x3390 [ 51.799296][ T7227] nf_conntrack_in+0x410/0xa80 [ 51.804082][ T7227] ipv4_conntrack_local+0xbe/0x130 [ 51.809239][ T7227] nf_hook_slow+0x83/0x160 [ 51.813640][ T7227] __ip_local_out+0x1f7/0x2b0 [ 51.818301][ T7227] ip_local_out+0x31/0x90 [ 51.822614][ T7227] __ip_queue_xmit+0x3a8/0xa40 [ 51.827365][ T7227] ip_queue_xmit+0x45/0x60 [ 51.831961][ T7227] __tcp_transmit_skb+0xe81/0x1d60 [ 51.837240][ T7227] __tcp_send_ack+0x246/0x300 [ 51.841904][ T7227] tcp_send_ack+0x34/0x40 [ 51.846346][ T7227] tcp_cleanup_rbuf+0x130/0x360 [ 51.851262][ T7227] [ 51.853575][ T7227] Reported by Kernel Concurrency Sanitizer on: [ 51.859865][ T7227] CPU: 1 PID: 7227 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0 [ 51.867348][ T7227] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.877597][ T7227] ================================================================== [ 51.885771][ T7227] Kernel panic - not syncing: panic_on_warn set ... [ 51.892361][ T7227] CPU: 1 PID: 7227 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0 [ 51.899829][ T7227] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.909958][ T7227] Call Trace: [ 51.913241][ T7227] dump_stack+0xf5/0x159 [ 51.917621][ T7227] panic+0x210/0x640 [ 51.921535][ T7227] ? ip_queue_xmit+0x45/0x60 [ 51.926199][ T7227] ? vprintk_func+0x8d/0x140 [ 51.932299][ T7227] kcsan_report.cold+0xc/0x10 [ 51.937001][ T7227] __kcsan_setup_watchpoint+0x32e/0x4a0 [ 51.942532][ T7227] __tsan_write4+0x32/0x40 [ 51.946938][ T7227] __nf_ct_refresh_acct+0xfb/0x1b0 [ 51.952037][ T7227] nf_conntrack_tcp_packet+0xd40/0x3390 [ 51.957662][ T7227] ? __kcsan_setup_watchpoint+0x6b/0x4a0 [ 51.963375][ T7227] nf_conntrack_in+0x410/0xa80 [ 51.968130][ T7227] ipv4_conntrack_local+0xbe/0x130 [ 51.973260][ T7227] nf_hook_slow+0x83/0x160 [ 51.977661][ T7227] ? nf_ct_tcp_fixup+0xe0/0xe0 [ 51.982414][ T7227] __ip_local_out+0x1f7/0x2b0 [ 51.987079][ T7227] ? constant_test_bit+0x30/0x30 [ 51.992005][ T7227] ip_local_out+0x31/0x90 [ 51.996321][ T7227] __ip_queue_xmit+0x3a8/0xa40 [ 52.001075][ T7227] ip_queue_xmit+0x45/0x60 [ 52.005482][ T7227] __tcp_transmit_skb+0xe81/0x1d60 [ 52.010585][ T7227] __tcp_send_ack+0x246/0x300 [ 52.015715][ T7227] tcp_send_ack+0x34/0x40 [ 52.020032][ T7227] tcp_cleanup_rbuf+0x130/0x360 [ 52.024934][ T7227] tcp_recvmsg+0x633/0x1a30 [ 52.029429][ T7227] inet_recvmsg+0xbb/0x250 [ 52.034170][ T7227] ? __tsan_read8+0x2c/0x30 [ 52.038663][ T7227] ? inet_sendpage+0x100/0x100 [ 52.043417][ T7227] sock_recvmsg+0x92/0xb0 [ 52.048220][ T7227] sock_read_iter+0x15f/0x1e0 [ 52.052896][ T7227] new_sync_read+0x389/0x4f0 [ 52.057478][ T7227] __vfs_read+0xb1/0xc0 [ 52.061877][ T7227] vfs_read+0x143/0x2c0 [ 52.066085][ T7227] ksys_read+0xd5/0x1b0 [ 52.070233][ T7227] __x64_sys_read+0x4c/0x60 [ 52.074828][ T7227] do_syscall_64+0xcc/0x370 [ 52.080486][ T7227] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 52.086452][ T7227] RIP: 0033:0x47c530 [ 52.090365][ T7227] 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 [ 52.110836][ T7227] RSP: 002b:000000c42012f7d0 EFLAGS: 00000202 ORIG_RAX: 0000000000000000 [ 52.119271][ T7227] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530 [ 52.127283][ T7227] RDX: 0000000000001000 RSI: 000000c420314000 RDI: 0000000000000003 [ 52.135366][ T7227] RBP: 000000c42012f828 R08: 0000000000000000 R09: 0000000000000000 [ 52.143321][ T7227] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004 [ 52.151281][ T7227] R13: ffffffffffffffff R14: 0000000000000004 R15: ffffffffffffffff [ 52.160952][ T7227] Kernel Offset: disabled [ 52.165282][ T7227] Rebooting in 86400 seconds..