Warning: Permanently added '10.128.1.57' (ECDSA) to the list of known hosts.
2019/10/22 12:46:47 fuzzer started
2019/10/22 12:46:49 dialing manager at 10.128.0.105:37053
2019/10/22 12:46:49 syscalls: 2524
2019/10/22 12:46:49 code coverage: enabled
2019/10/22 12:46:49 comparison tracing: enabled
2019/10/22 12:46:49 extra coverage: extra coverage is not supported by the kernel
2019/10/22 12:46:49 setuid sandbox: enabled
2019/10/22 12:46:49 namespace sandbox: enabled
2019/10/22 12:46:49 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/22 12:46:49 fault injection: enabled
2019/10/22 12:46:49 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/22 12:46:49 net packet injection: enabled
2019/10/22 12:46:49 net device setup: enabled
2019/10/22 12:46:49 concurrency sanitizer: enabled
syzkaller login: [   57.669796][ T7244] ==================================================================
[   57.677932][ T7244] BUG: KCSAN: data-race in tcp_add_backlog / tcp_grow_window.isra.0
[   57.685890][ T7244] 
[   57.688255][ T7244] write to 0xffff88811ae752ec of 4 bytes by interrupt on cpu 1:
[   57.695903][ T7244]  tcp_add_backlog+0x4a0/0xcc0
[   57.700687][ T7244]  tcp_v4_rcv+0x1a60/0x1bb0
[   57.705176][ T7244]  ip_protocol_deliver_rcu+0x4d/0x420
[   57.710519][ T7244]  ip_local_deliver_finish+0x110/0x140
[   57.716321][ T7244]  ip_local_deliver+0x133/0x210
[   57.721156][ T7244]  ip_rcv_finish+0x121/0x160
[   57.725724][ T7244]  ip_rcv+0x18f/0x1a0
[   57.729689][ T7244]  __netif_receive_skb_one_core+0xa7/0xe0
[   57.735401][ T7244]  __netif_receive_skb+0x37/0xf0
[   57.740349][ T7244]  netif_receive_skb_internal+0x59/0x190
[   57.745972][ T7244]  napi_gro_receive+0x28f/0x330
[   57.750834][ T7244]  receive_buf+0x284/0x30b0
[   57.755399][ T7244]  virtnet_poll+0x436/0x7d0
[   57.759879][ T7244]  net_rx_action+0x3ae/0xa90
[   57.764448][ T7244] 
[   57.766767][ T7244] read to 0xffff88811ae752ec of 4 bytes by task 7244 on cpu 0:
[   57.774290][ T7244]  tcp_grow_window.isra.0+0x6b/0x480
[   57.779552][ T7244]  tcp_event_data_recv+0x68f/0x990
[   57.784637][ T7244]  tcp_rcv_established+0xbfe/0xf50
[   57.789726][ T7244]  tcp_v4_do_rcv+0x381/0x4e0
[   57.794297][ T7244]  __release_sock+0x135/0x1e0
[   57.798966][ T7244]  release_sock+0x61/0x160
[   57.803360][ T7244]  tcp_recvmsg+0x63b/0x1a30
[   57.807861][ T7244]  inet_recvmsg+0xbb/0x250
[   57.812255][ T7244]  sock_recvmsg+0x92/0xb0
[   57.816559][ T7244]  sock_read_iter+0x15f/0x1e0
[   57.821215][ T7244]  new_sync_read+0x389/0x4f0
[   57.825782][ T7244]  __vfs_read+0xb1/0xc0
[   57.829914][ T7244]  vfs_read+0x143/0x2c0
[   57.834052][ T7244] 
[   57.836353][ T7244] Reported by Kernel Concurrency Sanitizer on:
[   57.842486][ T7244] CPU: 0 PID: 7244 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   57.849924][ T7244] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   57.860050][ T7244] ==================================================================
[   57.868087][ T7244] Kernel panic - not syncing: panic_on_warn set ...
[   57.874648][ T7244] CPU: 0 PID: 7244 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   57.882075][ T7244] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   57.892103][ T7244] Call Trace:
[   57.895372][ T7244]  dump_stack+0xf5/0x159
[   57.899601][ T7244]  panic+0x210/0x640
[   57.903488][ T7244]  ? sock_recvmsg+0x92/0xb0
[   57.907967][ T7244]  ? vprintk_func+0x8d/0x140
[   57.912557][ T7244]  kcsan_report.cold+0xc/0x10
[   57.917219][ T7244]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   57.922744][ T7244]  __tsan_read4+0x2c/0x30
[   57.927063][ T7244]  tcp_grow_window.isra.0+0x6b/0x480
[   57.932323][ T7244]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   57.937942][ T7244]  tcp_event_data_recv+0x68f/0x990
[   57.943048][ T7244]  tcp_rcv_established+0xbfe/0xf50
[   57.948151][ T7244]  ? ipv4_dst_check+0xc6/0xf0
[   57.952834][ T7244]  tcp_v4_do_rcv+0x381/0x4e0
[   57.957405][ T7244]  __release_sock+0x135/0x1e0
[   57.962061][ T7244]  release_sock+0x61/0x160
[   57.966457][ T7244]  tcp_recvmsg+0x63b/0x1a30
[   57.970943][ T7244]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   57.976553][ T7244]  inet_recvmsg+0xbb/0x250
[   57.980949][ T7244]  ? __tsan_read8+0x2c/0x30
[   57.985429][ T7244]  ? inet_sendpage+0x100/0x100
[   57.990169][ T7244]  sock_recvmsg+0x92/0xb0
[   57.994476][ T7244]  sock_read_iter+0x15f/0x1e0
[   57.999147][ T7244]  new_sync_read+0x389/0x4f0
[   58.003727][ T7244]  __vfs_read+0xb1/0xc0
[   58.008002][ T7244]  vfs_read+0x143/0x2c0
[   58.012188][ T7244]  ksys_read+0xd5/0x1b0
[   58.016337][ T7244]  __x64_sys_read+0x4c/0x60
[   58.020828][ T7244]  do_syscall_64+0xcc/0x370
[   58.025311][ T7244]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   58.031177][ T7244] RIP: 0033:0x47c530
[   58.035053][ T7244] 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
[   58.054632][ T7244] RSP: 002b:000000c4203bd810 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
[   58.063019][ T7244] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   58.070967][ T7244] RDX: 0000000000001000 RSI: 000000c420318000 RDI: 0000000000000003
[   58.079019][ T7244] RBP: 000000c4203bd868 R08: 0000000000000000 R09: 0000000000000000
[   58.087140][ T7244] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008
[   58.095088][ T7244] R13: ffffffffffffffff R14: 0000000000000002 R15: ffffffffffffffff
[   58.104401][ T7244] Kernel Offset: disabled
[   58.108723][ T7244] Rebooting in 86400 seconds..