Warning: Permanently added '10.128.0.192' (ECDSA) to the list of known hosts.
2019/10/22 10:00:26 fuzzer started
2019/10/22 10:00:28 dialing manager at 10.128.0.105:37053
2019/10/22 10:00:28 syscalls: 2524
2019/10/22 10:00:28 code coverage: enabled
2019/10/22 10:00:28 comparison tracing: enabled
2019/10/22 10:00:28 extra coverage: extra coverage is not supported by the kernel
2019/10/22 10:00:28 setuid sandbox: enabled
2019/10/22 10:00:28 namespace sandbox: enabled
2019/10/22 10:00:28 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/22 10:00:28 fault injection: enabled
2019/10/22 10:00:28 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/22 10:00:28 net packet injection: enabled
2019/10/22 10:00:28 net device setup: enabled
2019/10/22 10:00:28 concurrency sanitizer: enabled
syzkaller login: [   49.404297][ T7239] ==================================================================
[   49.412551][ T7239] BUG: KCSAN: data-race in tcp_add_backlog / tcp_recvmsg
[   49.420020][ T7239] 
[   49.422478][ T7239] write to 0xffff8881260bd2f8 of 8 bytes by interrupt on cpu 1:
[   49.430397][ T7239]  tcp_add_backlog+0x45a/0xcc0
[   49.435617][ T7239]  tcp_v4_rcv+0x1a60/0x1bb0
[   49.440195][ T7239]  ip_protocol_deliver_rcu+0x4d/0x420
[   49.445586][ T7239]  ip_local_deliver_finish+0x110/0x140
[   49.451042][ T7239]  ip_local_deliver+0x133/0x210
[   49.457586][ T7239]  ip_rcv_finish+0x121/0x160
[   49.462213][ T7239]  ip_rcv+0x18f/0x1a0
[   49.466415][ T7239]  __netif_receive_skb_one_core+0xa7/0xe0
[   49.473332][ T7239]  __netif_receive_skb+0x37/0xf0
[   49.480047][ T7239]  netif_receive_skb_internal+0x59/0x190
[   49.487335][ T7239]  napi_gro_receive+0x28f/0x330
[   49.493311][ T7239]  receive_buf+0x284/0x30b0
[   49.500334][ T7239]  virtnet_poll+0x436/0x7d0
[   49.506005][ T7239]  net_rx_action+0x3ae/0xa90
[   49.511373][ T7239] 
[   49.513918][ T7239] read to 0xffff8881260bd2f8 of 8 bytes by task 7239 on cpu 0:
[   49.521923][ T7239]  tcp_recvmsg+0x470/0x1a30
[   49.526410][ T7239]  inet_recvmsg+0xbb/0x250
[   49.531417][ T7239]  sock_recvmsg+0x92/0xb0
[   49.535984][ T7239]  sock_read_iter+0x15f/0x1e0
[   49.540825][ T7239]  new_sync_read+0x389/0x4f0
[   49.545507][ T7239]  __vfs_read+0xb1/0xc0
[   49.549749][ T7239]  vfs_read+0x143/0x2c0
[   49.554021][ T7239]  ksys_read+0xd5/0x1b0
[   49.558328][ T7239]  __x64_sys_read+0x4c/0x60
[   49.563076][ T7239]  do_syscall_64+0xcc/0x370
[   49.567649][ T7239]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   49.573724][ T7239] 
[   49.576303][ T7239] Reported by Kernel Concurrency Sanitizer on:
[   49.582647][ T7239] CPU: 0 PID: 7239 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   49.590452][ T7239] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.601041][ T7239] ==================================================================
[   49.609359][ T7239] Kernel panic - not syncing: panic_on_warn set ...
[   49.616451][ T7239] CPU: 0 PID: 7239 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   49.624176][ T7239] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.634657][ T7239] Call Trace:
[   49.638297][ T7239]  dump_stack+0xf5/0x159
[   49.642677][ T7239]  panic+0x210/0x640
[   49.649909][ T7239]  ? __x64_sys_read+0x4c/0x60
[   49.654715][ T7239]  ? vprintk_func+0x8d/0x140
[   49.659304][ T7239]  kcsan_report.cold+0xc/0x10
[   49.663985][ T7239]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   49.669813][ T7239]  __tsan_read8+0x2c/0x30
[   49.674159][ T7239]  tcp_recvmsg+0x470/0x1a30
[   49.679066][ T7239]  inet_recvmsg+0xbb/0x250
[   49.683683][ T7239]  ? __tsan_read8+0x2c/0x30
[   49.690624][ T7239]  ? inet_sendpage+0x100/0x100
[   49.695386][ T7239]  sock_recvmsg+0x92/0xb0
[   49.699729][ T7239]  sock_read_iter+0x15f/0x1e0
[   49.704669][ T7239]  new_sync_read+0x389/0x4f0
[   49.710564][ T7239]  __vfs_read+0xb1/0xc0
[   49.715069][ T7239]  vfs_read+0x143/0x2c0
[   49.719218][ T7239]  ksys_read+0xd5/0x1b0
[   49.723365][ T7239]  __x64_sys_read+0x4c/0x60
[   49.727853][ T7239]  do_syscall_64+0xcc/0x370
[   49.732362][ T7239]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   49.738619][ T7239] RIP: 0033:0x47c530
[   49.742991][ T7239] 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
[   49.763892][ T7239] RSP: 002b:000000c420379810 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
[   49.772589][ T7239] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   49.780866][ T7239] RDX: 0000000000001000 RSI: 000000c4203d8000 RDI: 0000000000000003
[   49.788861][ T7239] RBP: 000000c420379868 R08: 0000000000000000 R09: 0000000000000000
[   49.798125][ T7239] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000004
[   49.806211][ T7239] R13: ffffffffffffffff R14: 0000000000000004 R15: ffffffffffffffff
[   49.815681][ T7239] Kernel Offset: disabled
[   49.820029][ T7239] Rebooting in 86400 seconds..