Warning: Permanently added '10.128.0.138' (ECDSA) to the list of known hosts.
2019/10/22 13:53:47 fuzzer started
2019/10/22 13:53:49 dialing manager at 10.128.0.105:37053
2019/10/22 13:53:49 syscalls: 2524
2019/10/22 13:53:49 code coverage: enabled
2019/10/22 13:53:49 comparison tracing: enabled
2019/10/22 13:53:49 extra coverage: extra coverage is not supported by the kernel
2019/10/22 13:53:49 setuid sandbox: enabled
2019/10/22 13:53:49 namespace sandbox: enabled
2019/10/22 13:53:49 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/22 13:53:49 fault injection: enabled
2019/10/22 13:53:49 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/22 13:53:49 net packet injection: enabled
2019/10/22 13:53:49 net device setup: enabled
2019/10/22 13:53:49 concurrency sanitizer: enabled
syzkaller login: [   49.210766][ T7189] ==================================================================
[   49.219006][ T7189] BUG: KCSAN: data-race in tcp_add_backlog / tcp_grow_window.isra.0
[   49.226955][ T7189] 
[   49.229384][ T7189] write to 0xffff888121c9f2ec of 4 bytes by interrupt on cpu 1:
[   49.237107][ T7189]  tcp_add_backlog+0x4a0/0xcc0
[   49.241890][ T7189]  tcp_v4_rcv+0x1a60/0x1bb0
[   49.246372][ T7189]  ip_protocol_deliver_rcu+0x4d/0x420
[   49.251720][ T7189]  ip_local_deliver_finish+0x110/0x140
[   49.257196][ T7189]  ip_local_deliver+0x133/0x210
[   49.262025][ T7189]  ip_rcv_finish+0x121/0x160
[   49.266602][ T7189]  ip_rcv+0x18f/0x1a0
[   49.270563][ T7189]  __netif_receive_skb_one_core+0xa7/0xe0
[   49.276274][ T7189]  __netif_receive_skb+0x37/0xf0
[   49.281204][ T7189]  netif_receive_skb_internal+0x59/0x190
[   49.286814][ T7189]  napi_gro_receive+0x28f/0x330
[   49.291653][ T7189]  receive_buf+0x284/0x30b0
[   49.296141][ T7189]  virtnet_poll+0x436/0x7d0
[   49.300633][ T7189]  net_rx_action+0x3ae/0xa90
[   49.305193][ T7189] 
[   49.307519][ T7189] read to 0xffff888121c9f2ec of 4 bytes by task 7189 on cpu 0:
[   49.315050][ T7189]  tcp_grow_window.isra.0+0x6b/0x480
[   49.320309][ T7189]  tcp_event_data_recv+0x68f/0x990
[   49.325745][ T7189]  tcp_rcv_established+0xbfe/0xf50
[   49.330854][ T7189]  tcp_v4_do_rcv+0x381/0x4e0
[   49.335894][ T7189]  __release_sock+0x135/0x1e0
[   49.340548][ T7189]  release_sock+0x61/0x160
[   49.344944][ T7189]  tcp_recvmsg+0x63b/0x1a30
[   49.349433][ T7189]  inet_recvmsg+0xbb/0x250
[   49.353830][ T7189]  sock_recvmsg+0x92/0xb0
[   49.358148][ T7189]  sock_read_iter+0x15f/0x1e0
[   49.362837][ T7189]  new_sync_read+0x389/0x4f0
[   49.367416][ T7189]  __vfs_read+0xb1/0xc0
[   49.371548][ T7189]  vfs_read+0x143/0x2c0
[   49.375684][ T7189] 
[   49.378001][ T7189] Reported by Kernel Concurrency Sanitizer on:
[   49.384280][ T7189] CPU: 0 PID: 7189 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   49.391896][ T7189] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.401932][ T7189] ==================================================================
[   49.409970][ T7189] Kernel panic - not syncing: panic_on_warn set ...
[   49.416537][ T7189] CPU: 0 PID: 7189 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   49.423966][ T7189] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.433994][ T7189] Call Trace:
[   49.437279][ T7189]  dump_stack+0xf5/0x159
[   49.441503][ T7189]  panic+0x210/0x640
[   49.445396][ T7189]  ? sock_recvmsg+0x92/0xb0
[   49.449878][ T7189]  ? vprintk_func+0x8d/0x140
[   49.454447][ T7189]  kcsan_report.cold+0xc/0x10
[   49.459120][ T7189]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   49.464650][ T7189]  __tsan_read4+0x2c/0x30
[   49.469070][ T7189]  tcp_grow_window.isra.0+0x6b/0x480
[   49.474351][ T7189]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   49.479975][ T7189]  tcp_event_data_recv+0x68f/0x990
[   49.485073][ T7189]  tcp_rcv_established+0xbfe/0xf50
[   49.490183][ T7189]  ? ipv4_dst_check+0xc6/0xf0
[   49.494847][ T7189]  tcp_v4_do_rcv+0x381/0x4e0
[   49.499450][ T7189]  __release_sock+0x135/0x1e0
[   49.504113][ T7189]  release_sock+0x61/0x160
[   49.508516][ T7189]  tcp_recvmsg+0x63b/0x1a30
[   49.513017][ T7189]  inet_recvmsg+0xbb/0x250
[   49.517412][ T7189]  ? __tsan_read8+0x2c/0x30
[   49.521898][ T7189]  ? inet_sendpage+0x100/0x100
[   49.526656][ T7189]  sock_recvmsg+0x92/0xb0
[   49.530969][ T7189]  sock_read_iter+0x15f/0x1e0
[   49.535717][ T7189]  new_sync_read+0x389/0x4f0
[   49.540304][ T7189]  __vfs_read+0xb1/0xc0
[   49.544453][ T7189]  vfs_read+0x143/0x2c0
[   49.548672][ T7189]  ksys_read+0xd5/0x1b0
[   49.552817][ T7189]  __x64_sys_read+0x4c/0x60
[   49.557299][ T7189]  do_syscall_64+0xcc/0x370
[   49.561784][ T7189]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   49.567651][ T7189] RIP: 0033:0x47c530
[   49.571537][ T7189] 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
[   49.591130][ T7189] RSP: 002b:000000c4203c1810 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
[   49.599517][ T7189] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   49.607467][ T7189] RDX: 0000000000001000 RSI: 000000c42037a000 RDI: 0000000000000003
[   49.615431][ T7189] RBP: 000000c4203c1868 R08: 0000000000000000 R09: 0000000000000000
[   49.623388][ T7189] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000020
[   49.631343][ T7189] R13: ffffffffffffffff R14: 0000000000000004 R15: ffffffffffffffff
[   49.640800][ T7189] Kernel Offset: disabled
[   49.645124][ T7189] Rebooting in 86400 seconds..