Warning: Permanently added '10.128.0.35' (ECDSA) to the list of known hosts.
2019/10/22 13:25:35 fuzzer started
2019/10/22 13:25:37 dialing manager at 10.128.0.105:37053
2019/10/22 13:25:37 syscalls: 2524
2019/10/22 13:25:37 code coverage: enabled
2019/10/22 13:25:37 comparison tracing: enabled
2019/10/22 13:25:37 extra coverage: extra coverage is not supported by the kernel
2019/10/22 13:25:37 setuid sandbox: enabled
2019/10/22 13:25:37 namespace sandbox: enabled
2019/10/22 13:25:37 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/22 13:25:37 fault injection: enabled
2019/10/22 13:25:37 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/22 13:25:37 net packet injection: enabled
2019/10/22 13:25:37 net device setup: enabled
2019/10/22 13:25:37 concurrency sanitizer: enabled
syzkaller login: [   48.140457][ T7228] ==================================================================
[   48.148600][ T7228] BUG: KCSAN: data-race in tcp_add_backlog / tcp_grow_window.isra.0
[   48.156556][ T7228] 
[   48.158867][ T7228] write to 0xffff888125dad2ec of 4 bytes by interrupt on cpu 0:
[   48.166484][ T7228]  tcp_add_backlog+0x4a0/0xcc0
[   48.171264][ T7228]  tcp_v4_rcv+0x1a60/0x1bb0
[   48.175750][ T7228]  ip_protocol_deliver_rcu+0x4d/0x420
[   48.181092][ T7228]  ip_local_deliver_finish+0x110/0x140
[   48.186557][ T7228]  ip_local_deliver+0x133/0x210
[   48.191382][ T7228]  ip_rcv_finish+0x121/0x160
[   48.195976][ T7228]  ip_rcv+0x18f/0x1a0
[   48.199931][ T7228]  __netif_receive_skb_one_core+0xa7/0xe0
[   48.205624][ T7228]  __netif_receive_skb+0x37/0xf0
[   48.210533][ T7228]  netif_receive_skb_internal+0x59/0x190
[   48.216136][ T7228]  napi_gro_receive+0x28f/0x330
[   48.220957][ T7228]  receive_buf+0x284/0x30b0
[   48.225433][ T7228]  virtnet_poll+0x436/0x7d0
[   48.229909][ T7228]  net_rx_action+0x3ae/0xa90
[   48.234471][ T7228] 
[   48.236791][ T7228] read to 0xffff888125dad2ec of 4 bytes by task 7228 on cpu 1:
[   48.244304][ T7228]  tcp_grow_window.isra.0+0x6b/0x480
[   48.249563][ T7228]  tcp_event_data_recv+0x68f/0x990
[   48.254648][ T7228]  tcp_rcv_established+0xbfe/0xf50
[   48.259734][ T7228]  tcp_v4_do_rcv+0x381/0x4e0
[   48.264298][ T7228]  __release_sock+0x135/0x1e0
[   48.268951][ T7228]  release_sock+0x61/0x160
[   48.273344][ T7228]  tcp_recvmsg+0x63b/0x1a30
[   48.277857][ T7228]  inet_recvmsg+0xbb/0x250
[   48.282277][ T7228]  sock_recvmsg+0x92/0xb0
[   48.286580][ T7228]  sock_read_iter+0x15f/0x1e0
[   48.291237][ T7228]  new_sync_read+0x389/0x4f0
[   48.295803][ T7228]  __vfs_read+0xb1/0xc0
[   48.299939][ T7228]  vfs_read+0x143/0x2c0
[   48.304061][ T7228] 
[   48.306358][ T7228] Reported by Kernel Concurrency Sanitizer on:
[   48.312485][ T7228] CPU: 1 PID: 7228 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   48.319907][ T7228] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   48.329944][ T7228] ==================================================================
[   48.337976][ T7228] Kernel panic - not syncing: panic_on_warn set ...
[   48.344546][ T7228] CPU: 1 PID: 7228 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   48.351980][ T7228] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   48.362008][ T7228] Call Trace:
[   48.365278][ T7228]  dump_stack+0xf5/0x159
[   48.369496][ T7228]  panic+0x210/0x640
[   48.373376][ T7228]  ? sock_recvmsg+0x92/0xb0
[   48.377855][ T7228]  ? vprintk_func+0x8d/0x140
[   48.382423][ T7228]  kcsan_report.cold+0xc/0x10
[   48.387078][ T7228]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   48.392600][ T7228]  __tsan_read4+0x2c/0x30
[   48.396904][ T7228]  tcp_grow_window.isra.0+0x6b/0x480
[   48.402160][ T7228]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   48.407768][ T7228]  tcp_event_data_recv+0x68f/0x990
[   48.412856][ T7228]  tcp_rcv_established+0xbfe/0xf50
[   48.417951][ T7228]  ? ipv4_dst_check+0xc6/0xf0
[   48.422604][ T7228]  tcp_v4_do_rcv+0x381/0x4e0
[   48.427181][ T7228]  __release_sock+0x135/0x1e0
[   48.431840][ T7228]  release_sock+0x61/0x160
[   48.436243][ T7228]  tcp_recvmsg+0x63b/0x1a30
[   48.440724][ T7228]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   48.446333][ T7228]  inet_recvmsg+0xbb/0x250
[   48.450729][ T7228]  ? __tsan_read8+0x2c/0x30
[   48.455209][ T7228]  ? inet_sendpage+0x100/0x100
[   48.459950][ T7228]  sock_recvmsg+0x92/0xb0
[   48.464256][ T7228]  sock_read_iter+0x15f/0x1e0
[   48.468911][ T7228]  new_sync_read+0x389/0x4f0
[   48.473481][ T7228]  __vfs_read+0xb1/0xc0
[   48.477611][ T7228]  vfs_read+0x143/0x2c0
[   48.481741][ T7228]  ksys_read+0xd5/0x1b0
[   48.485872][ T7228]  __x64_sys_read+0x4c/0x60
[   48.490350][ T7228]  do_syscall_64+0xcc/0x370
[   48.494836][ T7228]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   48.500717][ T7228] RIP: 0033:0x47c530
[   48.504591][ T7228] 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
[   48.524167][ T7228] RSP: 002b:000000c4204f37d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   48.532559][ T7228] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   48.540503][ T7228] RDX: 0000000000001000 RSI: 000000c420136000 RDI: 0000000000000003
[   48.548446][ T7228] RBP: 000000c4204f3830 R08: 0000000000000000 R09: 0000000000000000
[   48.556391][ T7228] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000007
[   48.564335][ T7228] R13: 000000c420021500 R14: 0000000000000004 R15: ffffffffffffffff
[   48.573437][ T7228] Kernel Offset: disabled
[   48.577755][ T7228] Rebooting in 86400 seconds..