Warning: Permanently added '10.128.10.3' (ECDSA) to the list of known hosts. 2019/10/22 20:40:46 fuzzer started 2019/10/22 20:40:48 dialing manager at 10.128.0.105:33369 2019/10/22 20:40:48 syscalls: 2524 2019/10/22 20:40:48 code coverage: enabled 2019/10/22 20:40:48 comparison tracing: enabled 2019/10/22 20:40:48 extra coverage: extra coverage is not supported by the kernel 2019/10/22 20:40:48 setuid sandbox: enabled 2019/10/22 20:40:48 namespace sandbox: enabled 2019/10/22 20:40:48 Android sandbox: /sys/fs/selinux/policy does not exist 2019/10/22 20:40:48 fault injection: enabled 2019/10/22 20:40:48 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled 2019/10/22 20:40:48 net packet injection: enabled 2019/10/22 20:40:48 net device setup: enabled 2019/10/22 20:40:48 concurrency sanitizer: enabled syzkaller login: [ 47.453376][ C1] ================================================================== [ 47.461498][ C1] BUG: KCSAN: data-race in __tcp_select_window / tcp_add_backlog [ 47.469188][ C1] [ 47.471503][ C1] read to 0xffff888126ab412c of 4 bytes by task 7221 on cpu 0: [ 47.479040][ C1] __tcp_select_window+0x6b/0x4d0 [ 47.484051][ C1] __tcp_transmit_skb+0x700/0x1d60 [ 47.489146][ C1] __tcp_send_ack+0x246/0x300 [ 47.494157][ C1] tcp_send_ack+0x34/0x40 [ 47.498468][ C1] tcp_cleanup_rbuf+0x130/0x360 [ 47.503311][ C1] tcp_recvmsg+0x633/0x1a30 [ 47.507793][ C1] inet_recvmsg+0xbb/0x250 [ 47.512190][ C1] sock_recvmsg+0x92/0xb0 [ 47.516502][ C1] sock_read_iter+0x15f/0x1e0 [ 47.521251][ C1] new_sync_read+0x389/0x4f0 [ 47.525819][ C1] __vfs_read+0xb1/0xc0 [ 47.529975][ C1] vfs_read+0x143/0x2c0 [ 47.534120][ C1] ksys_read+0xd5/0x1b0 [ 47.538255][ C1] __x64_sys_read+0x4c/0x60 [ 47.542741][ C1] [ 47.545054][ C1] write to 0xffff888126ab412c of 4 bytes by interrupt on cpu 1: [ 47.552662][ C1] tcp_add_backlog+0x4a0/0xcc0 [ 47.557406][ C1] tcp_v4_rcv+0x1a60/0x1bb0 [ 47.561890][ C1] ip_protocol_deliver_rcu+0x4d/0x420 [ 47.567242][ C1] ip_local_deliver_finish+0x110/0x140 [ 47.572681][ C1] ip_local_deliver+0x133/0x210 [ 47.577532][ C1] ip_rcv_finish+0x121/0x160 [ 47.582113][ C1] ip_rcv+0x18f/0x1a0 [ 47.586077][ C1] __netif_receive_skb_one_core+0xa7/0xe0 [ 47.591950][ C1] __netif_receive_skb+0x37/0xf0 [ 47.596870][ C1] netif_receive_skb_internal+0x59/0x190 [ 47.602485][ C1] napi_gro_receive+0x28f/0x330 [ 47.607313][ C1] receive_buf+0x284/0x30b0 [ 47.611795][ C1] virtnet_poll+0x436/0x7d0 [ 47.616271][ C1] [ 47.618579][ C1] Reported by Kernel Concurrency Sanitizer on: [ 47.624715][ C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-rc3+ #0 [ 47.632060][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.642096][ C1] ================================================================== [ 47.650220][ C1] Kernel panic - not syncing: panic_on_warn set ... [ 47.656790][ C1] CPU: 1 PID: 16 Comm: ksoftirqd/1 Not tainted 5.4.0-rc3+ #0 [ 47.664132][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 47.674166][ C1] Call Trace: [ 47.677445][ C1] dump_stack+0xf5/0x159 [ 47.681674][ C1] panic+0x210/0x640 [ 47.685557][ C1] ? __netif_receive_skb+0x37/0xf0 [ 47.690654][ C1] ? vprintk_func+0x8d/0x140 [ 47.695239][ C1] kcsan_report.cold+0xc/0x10 [ 47.699905][ C1] __kcsan_setup_watchpoint+0x32e/0x4a0 [ 47.705436][ C1] __tsan_write4+0x32/0x40 [ 47.709855][ C1] tcp_add_backlog+0x4a0/0xcc0 [ 47.714618][ C1] tcp_v4_rcv+0x1a60/0x1bb0 [ 47.719112][ C1] ? __tsan_read8+0x2c/0x30 [ 47.723603][ C1] ip_protocol_deliver_rcu+0x4d/0x420 [ 47.728966][ C1] ip_local_deliver_finish+0x110/0x140 [ 47.734407][ C1] ip_local_deliver+0x133/0x210 [ 47.739244][ C1] ? ip_protocol_deliver_rcu+0x420/0x420 [ 47.744872][ C1] ip_rcv_finish+0x121/0x160 [ 47.749460][ C1] ip_rcv+0x18f/0x1a0 [ 47.753432][ C1] ? ip_sublist_rcv+0x5e0/0x5e0 [ 47.758528][ C1] ? ip_local_deliver+0x210/0x210 [ 47.763537][ C1] __netif_receive_skb_one_core+0xa7/0xe0 [ 47.769252][ C1] __netif_receive_skb+0x37/0xf0 [ 47.774172][ C1] netif_receive_skb_internal+0x59/0x190 [ 47.780312][ C1] napi_gro_receive+0x28f/0x330 [ 47.785148][ C1] receive_buf+0x284/0x30b0 [ 47.789635][ C1] ? __tsan_write8+0x32/0x40 [ 47.794215][ C1] ? virtqueue_get_buf_ctx+0x4fd/0x5c0 [ 47.799655][ C1] ? __kcsan_setup_watchpoint+0x6b/0x4a0 [ 47.805268][ C1] ? __kcsan_setup_watchpoint+0x6b/0x4a0 [ 47.810897][ C1] virtnet_poll+0x436/0x7d0 [ 47.815648][ C1] ? __sanitizer_cov_trace_const_cmp1+0x1a/0x20 [ 47.821878][ C1] net_rx_action+0x3ae/0xa90 [ 47.826635][ C1] __do_softirq+0x115/0x33f [ 47.831133][ C1] ? takeover_tasklets+0x250/0x250 [ 47.836241][ C1] run_ksoftirqd+0x46/0x60 [ 47.840640][ C1] smpboot_thread_fn+0x37d/0x4a0 [ 47.845565][ C1] kthread+0x1d4/0x200 [ 47.849617][ C1] ? constant_test_bit.constprop.0+0x30/0x30 [ 47.856451][ C1] ? kthread_stop+0x2d0/0x2d0 [ 47.861109][ C1] ret_from_fork+0x1f/0x30 [ 47.866752][ C1] Kernel Offset: disabled [ 47.871313][ C1] Rebooting in 86400 seconds..