Warning: Permanently added '10.128.0.21' (ECDSA) to the list of known hosts.
2019/10/22 20:47:11 fuzzer started
2019/10/22 20:47:13 dialing manager at 10.128.0.105:33369
2019/10/22 20:47:13 syscalls: 2524
2019/10/22 20:47:13 code coverage: enabled
2019/10/22 20:47:13 comparison tracing: enabled
2019/10/22 20:47:13 extra coverage: extra coverage is not supported by the kernel
2019/10/22 20:47:13 setuid sandbox: enabled
2019/10/22 20:47:13 namespace sandbox: enabled
2019/10/22 20:47:13 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/22 20:47:13 fault injection: enabled
2019/10/22 20:47:13 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/22 20:47:13 net packet injection: enabled
2019/10/22 20:47:13 net device setup: enabled
2019/10/22 20:47:13 concurrency sanitizer: enabled
syzkaller login: [   47.361441][ T7250] ==================================================================
[   47.369581][ T7250] BUG: KCSAN: data-race in tcp_add_backlog / tcp_grow_window.isra.0
[   47.377533][ T7250] 
[   47.379842][ T7250] write to 0xffff8881223a932c of 4 bytes by interrupt on cpu 1:
[   47.387452][ T7250]  tcp_add_backlog+0x4a0/0xcc0
[   47.392196][ T7250]  tcp_v4_rcv+0x1a60/0x1bb0
[   47.396676][ T7250]  ip_protocol_deliver_rcu+0x4d/0x420
[   47.402025][ T7250]  ip_local_deliver_finish+0x110/0x140
[   47.407479][ T7250]  ip_local_deliver+0x133/0x210
[   47.412322][ T7250]  ip_rcv_finish+0x121/0x160
[   47.417000][ T7250]  ip_rcv+0x18f/0x1a0
[   47.421029][ T7250]  __netif_receive_skb_one_core+0xa7/0xe0
[   47.426739][ T7250]  __netif_receive_skb+0x37/0xf0
[   47.431701][ T7250]  netif_receive_skb_internal+0x59/0x190
[   47.437310][ T7250]  napi_gro_receive+0x28f/0x330
[   47.442136][ T7250]  receive_buf+0x284/0x30b0
[   47.446616][ T7250]  virtnet_poll+0x436/0x7d0
[   47.451103][ T7250]  net_rx_action+0x3ae/0xa90
[   47.455673][ T7250] 
[   47.457989][ T7250] read to 0xffff8881223a932c of 4 bytes by task 7250 on cpu 0:
[   47.465623][ T7250]  tcp_grow_window.isra.0+0x6b/0x480
[   47.470889][ T7250]  tcp_event_data_recv+0x68f/0x990
[   47.475979][ T7250]  tcp_rcv_established+0xbfe/0xf50
[   47.481083][ T7250]  tcp_v4_do_rcv+0x381/0x4e0
[   47.485655][ T7250]  __release_sock+0x135/0x1e0
[   47.490306][ T7250]  release_sock+0x61/0x160
[   47.494707][ T7250]  tcp_recvmsg+0x63b/0x1a30
[   47.499194][ T7250]  inet_recvmsg+0xbb/0x250
[   47.503589][ T7250]  sock_recvmsg+0x92/0xb0
[   47.507909][ T7250]  sock_read_iter+0x15f/0x1e0
[   47.512588][ T7250]  new_sync_read+0x389/0x4f0
[   47.517184][ T7250]  __vfs_read+0xb1/0xc0
[   47.521325][ T7250]  vfs_read+0x143/0x2c0
[   47.525465][ T7250] 
[   47.527772][ T7250] Reported by Kernel Concurrency Sanitizer on:
[   47.533906][ T7250] CPU: 0 PID: 7250 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   47.541344][ T7250] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.551373][ T7250] ==================================================================
[   47.559421][ T7250] Kernel panic - not syncing: panic_on_warn set ...
[   47.566000][ T7250] CPU: 0 PID: 7250 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   47.573869][ T7250] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.583906][ T7250] Call Trace:
[   47.587180][ T7250]  dump_stack+0xf5/0x159
[   47.591405][ T7250]  panic+0x210/0x640
[   47.595303][ T7250]  ? sock_recvmsg+0x92/0xb0
[   47.599791][ T7250]  ? vprintk_func+0x8d/0x140
[   47.604364][ T7250]  kcsan_report.cold+0xc/0x10
[   47.609027][ T7250]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   47.614679][ T7250]  __tsan_read4+0x2c/0x30
[   47.619007][ T7250]  tcp_grow_window.isra.0+0x6b/0x480
[   47.624272][ T7250]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   47.629939][ T7250]  tcp_event_data_recv+0x68f/0x990
[   47.635033][ T7250]  tcp_rcv_established+0xbfe/0xf50
[   47.640125][ T7250]  ? ipv4_dst_check+0xc6/0xf0
[   47.644898][ T7250]  tcp_v4_do_rcv+0x381/0x4e0
[   47.649552][ T7250]  __release_sock+0x135/0x1e0
[   47.654215][ T7250]  release_sock+0x61/0x160
[   47.658665][ T7250]  tcp_recvmsg+0x63b/0x1a30
[   47.663161][ T7250]  inet_recvmsg+0xbb/0x250
[   47.667553][ T7250]  ? __tsan_read8+0x2c/0x30
[   47.672035][ T7250]  ? inet_sendpage+0x100/0x100
[   47.676791][ T7250]  sock_recvmsg+0x92/0xb0
[   47.681105][ T7250]  sock_read_iter+0x15f/0x1e0
[   47.685763][ T7250]  new_sync_read+0x389/0x4f0
[   47.690336][ T7250]  __vfs_read+0xb1/0xc0
[   47.694468][ T7250]  vfs_read+0x143/0x2c0
[   47.698601][ T7250]  ksys_read+0xd5/0x1b0
[   47.702733][ T7250]  __x64_sys_read+0x4c/0x60
[   47.707216][ T7250]  do_syscall_64+0xcc/0x370
[   47.711700][ T7250]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   47.717568][ T7250] RIP: 0033:0x47c530
[   47.721441][ T7250] 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
[   47.741103][ T7250] RSP: 002b:000000c4202257d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   47.749522][ T7250] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   47.757604][ T7250] RDX: 0000000000001000 RSI: 000000c420056000 RDI: 0000000000000003
[   47.765556][ T7250] RBP: 000000c420225830 R08: 0000000000000000 R09: 0000000000000000
[   47.773537][ T7250] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000080
[   47.781495][ T7250] R13: ffffffffffffffff R14: 0000000000000010 R15: ffffffffffffffff
[   47.790866][ T7250] Kernel Offset: disabled
[   47.795187][ T7250] Rebooting in 86400 seconds..