Warning: Permanently added '10.128.0.61' (ECDSA) to the list of known hosts.
2019/10/22 02:42:12 fuzzer started
2019/10/22 02:42:14 dialing manager at 10.128.0.105:37053
2019/10/22 02:42:14 syscalls: 2524
2019/10/22 02:42:14 code coverage: enabled
2019/10/22 02:42:14 comparison tracing: enabled
2019/10/22 02:42:14 extra coverage: extra coverage is not supported by the kernel
2019/10/22 02:42:14 setuid sandbox: enabled
2019/10/22 02:42:14 namespace sandbox: enabled
2019/10/22 02:42:14 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/22 02:42:14 fault injection: enabled
2019/10/22 02:42:14 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/22 02:42:14 net packet injection: enabled
2019/10/22 02:42:14 net device setup: enabled
2019/10/22 02:42:14 concurrency sanitizer: enabled
syzkaller login: [   45.701988][ T7199] ==================================================================
[   45.710124][ T7199] BUG: KCSAN: data-race in tcp_add_backlog / tcp_rcv_space_adjust
[   45.718118][ T7199] 
[   45.720469][ T7199] read to 0xffff888126a8e14c of 4 bytes by interrupt on cpu 1:
[   45.727985][ T7199]  tcp_add_backlog+0x43/0xcc0
[   45.732634][ T7199]  tcp_v4_rcv+0x1a60/0x1bb0
[   45.737110][ T7199]  ip_protocol_deliver_rcu+0x4d/0x420
[   45.742455][ T7199]  ip_local_deliver_finish+0x110/0x140
[   45.747884][ T7199]  ip_local_deliver+0x133/0x210
[   45.752705][ T7199]  ip_rcv_finish+0x121/0x160
[   45.757265][ T7199]  ip_rcv+0x18f/0x1a0
[   45.761282][ T7199]  __netif_receive_skb_one_core+0xa7/0xe0
[   45.767095][ T7199]  __netif_receive_skb+0x37/0xf0
[   45.772007][ T7199]  netif_receive_skb_internal+0x59/0x190
[   45.777701][ T7199]  napi_gro_receive+0x28f/0x330
[   45.782527][ T7199]  receive_buf+0x284/0x30b0
[   45.787003][ T7199]  virtnet_poll+0x436/0x7d0
[   45.791479][ T7199]  net_rx_action+0x3ae/0xa90
[   45.796034][ T7199] 
[   45.798339][ T7199] write to 0xffff888126a8e14c of 4 bytes by task 7199 on cpu 0:
[   45.805957][ T7199]  tcp_rcv_space_adjust+0x40f/0x4c0
[   45.811131][ T7199]  tcp_recvmsg+0xdaa/0x1a30
[   45.815607][ T7199]  inet_recvmsg+0xbb/0x250
[   45.820011][ T7199]  sock_recvmsg+0x92/0xb0
[   45.824315][ T7199]  sock_read_iter+0x15f/0x1e0
[   45.828970][ T7199]  new_sync_read+0x389/0x4f0
[   45.833534][ T7199]  __vfs_read+0xb1/0xc0
[   45.837761][ T7199]  vfs_read+0x143/0x2c0
[   45.841890][ T7199]  ksys_read+0xd5/0x1b0
[   45.846018][ T7199]  __x64_sys_read+0x4c/0x60
[   45.850496][ T7199]  do_syscall_64+0xcc/0x370
[   45.854975][ T7199]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   45.860834][ T7199] 
[   45.863135][ T7199] Reported by Kernel Concurrency Sanitizer on:
[   45.869260][ T7199] CPU: 0 PID: 7199 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   45.876685][ T7199] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   45.886713][ T7199] ==================================================================
[   45.894763][ T7199] Kernel panic - not syncing: panic_on_warn set ...
[   45.901331][ T7199] CPU: 0 PID: 7199 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   45.908758][ T7199] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   45.918787][ T7199] Call Trace:
[   45.922063][ T7199]  dump_stack+0xf5/0x159
[   45.926288][ T7199]  panic+0x210/0x640
[   45.930174][ T7199]  ? ksys_read+0xd5/0x1b0
[   45.934655][ T7199]  ? vprintk_func+0x8d/0x140
[   45.939221][ T7199]  kcsan_report.cold+0xc/0x10
[   45.943875][ T7199]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   45.949497][ T7199]  __tsan_write4+0x32/0x40
[   45.953890][ T7199]  tcp_rcv_space_adjust+0x40f/0x4c0
[   45.959068][ T7199]  tcp_recvmsg+0xdaa/0x1a30
[   45.963653][ T7199]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   45.969272][ T7199]  inet_recvmsg+0xbb/0x250
[   45.973667][ T7199]  ? __tsan_read8+0x2c/0x30
[   45.978150][ T7199]  ? inet_sendpage+0x100/0x100
[   45.982894][ T7199]  sock_recvmsg+0x92/0xb0
[   45.987201][ T7199]  sock_read_iter+0x15f/0x1e0
[   45.991858][ T7199]  new_sync_read+0x389/0x4f0
[   45.996429][ T7199]  __vfs_read+0xb1/0xc0
[   46.000566][ T7199]  vfs_read+0x143/0x2c0
[   46.004702][ T7199]  ksys_read+0xd5/0x1b0
[   46.008880][ T7199]  __x64_sys_read+0x4c/0x60
[   46.013366][ T7199]  do_syscall_64+0xcc/0x370
[   46.017848][ T7199]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   46.023719][ T7199] RIP: 0033:0x47c530
[   46.027607][ T7199] 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
[   46.047216][ T7199] RSP: 002b:000000c4204ed810 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
[   46.055601][ T7199] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   46.063567][ T7199] RDX: 0000000000001000 RSI: 000000c42015a000 RDI: 0000000000000003
[   46.071512][ T7199] RBP: 000000c4204ed868 R08: 0000000000000000 R09: 0000000000000000
[   46.079461][ T7199] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000010
[   46.087408][ T7199] R13: ffffffffffffffff R14: 0000000000000002 R15: ffffffffffffffff
[   46.096623][ T7199] Kernel Offset: disabled
[   46.100940][ T7199] Rebooting in 86400 seconds..