Warning: Permanently added '10.128.0.187' (ECDSA) to the list of known hosts.
2019/10/22 18:50:15 fuzzer started
2019/10/22 18:50:16 dialing manager at 10.128.0.105:33369
2019/10/22 18:50:16 syscalls: 2524
2019/10/22 18:50:16 code coverage: enabled
2019/10/22 18:50:16 comparison tracing: enabled
2019/10/22 18:50:16 extra coverage: extra coverage is not supported by the kernel
2019/10/22 18:50:16 setuid sandbox: enabled
2019/10/22 18:50:16 namespace sandbox: enabled
2019/10/22 18:50:16 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/22 18:50:16 fault injection: enabled
2019/10/22 18:50:16 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/22 18:50:16 net packet injection: enabled
2019/10/22 18:50:16 net device setup: enabled
2019/10/22 18:50:16 concurrency sanitizer: enabled
syzkaller login: [   51.005420][ T7238] ld (7238) used greatest stack depth: 10136 bytes left
[   51.359196][ T7226] ==================================================================
[   51.367421][ T7226] BUG: KCSAN: data-race in tcp_add_backlog / tcp_recvmsg
[   51.375185][ T7226] 
[   51.377501][ T7226] write to 0xffff888126b38a38 of 8 bytes by interrupt on cpu 0:
[   51.385428][ T7226]  tcp_add_backlog+0x45a/0xcc0
[   51.390280][ T7226]  tcp_v4_rcv+0x1a60/0x1bb0
[   51.394765][ T7226]  ip_protocol_deliver_rcu+0x4d/0x420
[   51.400767][ T7226]  ip_local_deliver_finish+0x110/0x140
[   51.406209][ T7226]  ip_local_deliver+0x133/0x210
[   51.411039][ T7226]  ip_rcv_finish+0x121/0x160
[   51.415852][ T7226]  ip_rcv+0x18f/0x1a0
[   51.419816][ T7226]  __netif_receive_skb_one_core+0xa7/0xe0
[   51.425592][ T7226]  __netif_receive_skb+0x37/0xf0
[   51.430575][ T7226]  netif_receive_skb_internal+0x59/0x190
[   51.436189][ T7226]  napi_gro_receive+0x28f/0x330
[   51.441132][ T7226]  receive_buf+0x284/0x30b0
[   51.445618][ T7226]  virtnet_poll+0x436/0x7d0
[   51.450129][ T7226]  net_rx_action+0x3ae/0xa90
[   51.454759][ T7226] 
[   51.457072][ T7226] read to 0xffff888126b38a38 of 8 bytes by task 7226 on cpu 1:
[   51.464775][ T7226]  tcp_recvmsg+0x470/0x1a30
[   51.469293][ T7226]  inet_recvmsg+0xbb/0x250
[   51.473970][ T7226]  sock_recvmsg+0x92/0xb0
[   51.478303][ T7226]  sock_read_iter+0x15f/0x1e0
[   51.483069][ T7226]  new_sync_read+0x389/0x4f0
[   51.487638][ T7226]  __vfs_read+0xb1/0xc0
[   51.491890][ T7226]  vfs_read+0x143/0x2c0
[   51.496149][ T7226]  ksys_read+0xd5/0x1b0
[   51.500286][ T7226]  __x64_sys_read+0x4c/0x60
[   51.504776][ T7226]  do_syscall_64+0xcc/0x370
[   51.509260][ T7226]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   51.515126][ T7226] 
[   51.517434][ T7226] Reported by Kernel Concurrency Sanitizer on:
[   51.523585][ T7226] CPU: 1 PID: 7226 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   51.531013][ T7226] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   51.541045][ T7226] ==================================================================
[   51.549085][ T7226] Kernel panic - not syncing: panic_on_warn set ...
[   51.555664][ T7226] CPU: 1 PID: 7226 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   51.563092][ T7226] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   51.573186][ T7226] Call Trace:
[   51.576470][ T7226]  dump_stack+0xf5/0x159
[   51.580716][ T7226]  panic+0x210/0x640
[   51.584689][ T7226]  ? __x64_sys_read+0x4c/0x60
[   51.589361][ T7226]  ? vprintk_func+0x8d/0x140
[   51.593944][ T7226]  kcsan_report.cold+0xc/0x10
[   51.598680][ T7226]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   51.604231][ T7226]  __tsan_read8+0x2c/0x30
[   51.608549][ T7226]  tcp_recvmsg+0x470/0x1a30
[   51.613060][ T7226]  inet_recvmsg+0xbb/0x250
[   51.617518][ T7226]  ? __tsan_read8+0x2c/0x30
[   51.622008][ T7226]  ? inet_sendpage+0x100/0x100
[   51.626767][ T7226]  sock_recvmsg+0x92/0xb0
[   51.631081][ T7226]  sock_read_iter+0x15f/0x1e0
[   51.635745][ T7226]  new_sync_read+0x389/0x4f0
[   51.640323][ T7226]  __vfs_read+0xb1/0xc0
[   51.644462][ T7226]  vfs_read+0x143/0x2c0
[   51.648618][ T7226]  ksys_read+0xd5/0x1b0
[   51.652771][ T7226]  __x64_sys_read+0x4c/0x60
[   51.657261][ T7226]  do_syscall_64+0xcc/0x370
[   51.661745][ T7226]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   51.668333][ T7226] RIP: 0033:0x47c530
[   51.672213][ T7226] 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
[   51.691816][ T7226] RSP: 002b:000000c4203e5810 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
[   51.700325][ T7226] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   51.708306][ T7226] RDX: 0000000000001000 RSI: 000000c4202dc000 RDI: 0000000000000003
[   51.716266][ T7226] RBP: 000000c4203e5868 R08: 0000000000000000 R09: 0000000000000000
[   51.724349][ T7226] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004
[   51.732306][ T7226] R13: ffffffffffffffff R14: 0000000000000002 R15: ffffffffffffffff
[   51.742129][ T7226] Kernel Offset: disabled
[   51.746477][ T7226] Rebooting in 86400 seconds..