Warning: Permanently added '10.128.0.175' (ECDSA) to the list of known hosts.
2019/10/22 12:29:59 fuzzer started
2019/10/22 12:30:01 dialing manager at 10.128.0.105:37053
2019/10/22 12:30:01 syscalls: 2524
2019/10/22 12:30:01 code coverage: enabled
2019/10/22 12:30:01 comparison tracing: enabled
2019/10/22 12:30:01 extra coverage: extra coverage is not supported by the kernel
2019/10/22 12:30:01 setuid sandbox: enabled
2019/10/22 12:30:01 namespace sandbox: enabled
2019/10/22 12:30:01 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/22 12:30:01 fault injection: enabled
2019/10/22 12:30:01 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/22 12:30:01 net packet injection: enabled
2019/10/22 12:30:01 net device setup: enabled
2019/10/22 12:30:01 concurrency sanitizer: enabled
syzkaller login: [   47.195379][ T7215] ==================================================================
[   47.203494][ T7215] BUG: KCSAN: data-race in tcp_add_backlog / tcp_grow_window.isra.0
[   47.211438][ T7215] 
[   47.213746][ T7215] write to 0xffff888122cc29ec of 4 bytes by interrupt on cpu 0:
[   47.221348][ T7215]  tcp_add_backlog+0x4a0/0xcc0
[   47.226117][ T7215]  tcp_v4_rcv+0x1a60/0x1bb0
[   47.230596][ T7215]  ip_protocol_deliver_rcu+0x4d/0x420
[   47.235982][ T7215]  ip_local_deliver_finish+0x110/0x140
[   47.241413][ T7215]  ip_local_deliver+0x133/0x210
[   47.246236][ T7215]  ip_rcv_finish+0x121/0x160
[   47.250799][ T7215]  ip_rcv+0x18f/0x1a0
[   47.254753][ T7215]  __netif_receive_skb_one_core+0xa7/0xe0
[   47.260448][ T7215]  __netif_receive_skb+0x37/0xf0
[   47.265357][ T7215]  netif_receive_skb_internal+0x59/0x190
[   47.270974][ T7215]  napi_gro_receive+0x28f/0x330
[   47.275815][ T7215]  receive_buf+0x284/0x30b0
[   47.280298][ T7215]  virtnet_poll+0x436/0x7d0
[   47.284780][ T7215]  net_rx_action+0x3ae/0xa90
[   47.289339][ T7215] 
[   47.291647][ T7215] read to 0xffff888122cc29ec of 4 bytes by task 7215 on cpu 1:
[   47.299198][ T7215]  tcp_grow_window.isra.0+0x6b/0x480
[   47.304455][ T7215]  tcp_event_data_recv+0x68f/0x990
[   47.309556][ T7215]  tcp_rcv_established+0xbfe/0xf50
[   47.314643][ T7215]  tcp_v4_do_rcv+0x381/0x4e0
[   47.319206][ T7215]  __release_sock+0x135/0x1e0
[   47.323981][ T7215]  release_sock+0x61/0x160
[   47.328374][ T7215]  tcp_recvmsg+0x63b/0x1a30
[   47.332851][ T7215]  inet_recvmsg+0xbb/0x250
[   47.337241][ T7215]  sock_recvmsg+0x92/0xb0
[   47.341544][ T7215]  sock_read_iter+0x15f/0x1e0
[   47.346283][ T7215]  new_sync_read+0x389/0x4f0
[   47.350849][ T7215]  __vfs_read+0xb1/0xc0
[   47.355016][ T7215]  vfs_read+0x143/0x2c0
[   47.359143][ T7215] 
[   47.361461][ T7215] Reported by Kernel Concurrency Sanitizer on:
[   47.367594][ T7215] CPU: 1 PID: 7215 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   47.375023][ T7215] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.385066][ T7215] ==================================================================
[   47.393117][ T7215] Kernel panic - not syncing: panic_on_warn set ...
[   47.399679][ T7215] CPU: 1 PID: 7215 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   47.407105][ T7215] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.417137][ T7215] Call Trace:
[   47.420414][ T7215]  dump_stack+0xf5/0x159
[   47.424633][ T7215]  panic+0x210/0x640
[   47.428508][ T7215]  ? sock_recvmsg+0x92/0xb0
[   47.432987][ T7215]  ? vprintk_func+0x8d/0x140
[   47.437566][ T7215]  kcsan_report.cold+0xc/0x10
[   47.442224][ T7215]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   47.447744][ T7215]  __tsan_read4+0x2c/0x30
[   47.452059][ T7215]  tcp_grow_window.isra.0+0x6b/0x480
[   47.457346][ T7215]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   47.462955][ T7215]  tcp_event_data_recv+0x68f/0x990
[   47.468050][ T7215]  tcp_rcv_established+0xbfe/0xf50
[   47.473145][ T7215]  ? ipv4_dst_check+0xc6/0xf0
[   47.477802][ T7215]  tcp_v4_do_rcv+0x381/0x4e0
[   47.482372][ T7215]  __release_sock+0x135/0x1e0
[   47.487026][ T7215]  release_sock+0x61/0x160
[   47.491420][ T7215]  tcp_recvmsg+0x63b/0x1a30
[   47.495906][ T7215]  ? debug_smp_processor_id+0x4c/0x172
[   47.501344][ T7215]  inet_recvmsg+0xbb/0x250
[   47.505734][ T7215]  ? __tsan_read8+0x2c/0x30
[   47.510213][ T7215]  ? inet_sendpage+0x100/0x100
[   47.514953][ T7215]  sock_recvmsg+0x92/0xb0
[   47.519258][ T7215]  sock_read_iter+0x15f/0x1e0
[   47.523914][ T7215]  new_sync_read+0x389/0x4f0
[   47.528484][ T7215]  __vfs_read+0xb1/0xc0
[   47.532616][ T7215]  vfs_read+0x143/0x2c0
[   47.536750][ T7215]  ksys_read+0xd5/0x1b0
[   47.540882][ T7215]  __x64_sys_read+0x4c/0x60
[   47.545364][ T7215]  do_syscall_64+0xcc/0x370
[   47.549845][ T7215]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   47.555719][ T7215] RIP: 0033:0x47c530
[   47.559600][ T7215] 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
[   47.579190][ T7215] RSP: 002b:000000c4203537d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   47.587594][ T7215] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   47.595539][ T7215] RDX: 0000000000001000 RSI: 000000c4202c8000 RDI: 0000000000000003
[   47.603486][ T7215] RBP: 000000c420353830 R08: 0000000000000000 R09: 0000000000000000
[   47.611442][ T7215] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000003
[   47.619397][ T7215] R13: 000000c4201c6dc8 R14: 0000000000000002 R15: ffffffffffffffff
[   47.628509][ T7215] Kernel Offset: disabled
[   47.632827][ T7215] Rebooting in 86400 seconds..