Warning: Permanently added '10.128.10.28' (ECDSA) to the list of known hosts.
2019/10/26 11:42:41 fuzzer started
2019/10/26 11:42:43 dialing manager at 10.128.0.105:33655
2019/10/26 11:42:43 syscalls: 2533
2019/10/26 11:42:43 code coverage: enabled
2019/10/26 11:42:43 comparison tracing: enabled
2019/10/26 11:42:43 extra coverage: extra coverage is not supported by the kernel
2019/10/26 11:42:43 setuid sandbox: enabled
2019/10/26 11:42:43 namespace sandbox: enabled
2019/10/26 11:42:43 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/26 11:42:43 fault injection: enabled
2019/10/26 11:42:43 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/26 11:42:43 net packet injection: enabled
2019/10/26 11:42:43 net device setup: enabled
2019/10/26 11:42:43 concurrency sanitizer: enabled
2019/10/26 11:42:44 adding functions to KCSAN blacklist: 'pid_update_inode' 'tcp_poll' '__hrtimer_run_queues' 'tomoyo_supervisor' 'pipe_poll' 'find_next_bit' 
syzkaller login: [   49.504383][ T7200] ==================================================================
[   49.512697][ T7200] BUG: KCSAN: data-race in tcp_add_backlog / tcp_grow_window.isra.0
[   49.520741][ T7200] 
[   49.523047][ T7200] write to 0xffff88812567b2ec of 4 bytes by interrupt on cpu 1:
[   49.530681][ T7200]  tcp_add_backlog+0x4a0/0xcc0
[   49.535436][ T7200]  tcp_v4_rcv+0x1a60/0x1bb0
[   49.539914][ T7200]  ip_protocol_deliver_rcu+0x4d/0x420
[   49.545260][ T7200]  ip_local_deliver_finish+0x110/0x140
[   49.550691][ T7200]  ip_local_deliver+0x133/0x210
[   49.555515][ T7200]  ip_rcv_finish+0x121/0x160
[   49.560140][ T7200]  ip_rcv+0x18f/0x1a0
[   49.564120][ T7200]  __netif_receive_skb_one_core+0xa7/0xe0
[   49.569821][ T7200]  __netif_receive_skb+0x37/0xf0
[   49.574771][ T7200]  netif_receive_skb_internal+0x59/0x190
[   49.580377][ T7200]  napi_gro_receive+0x28f/0x330
[   49.585202][ T7200]  receive_buf+0x284/0x30b0
[   49.589678][ T7200]  virtnet_poll+0x436/0x7d0
[   49.594156][ T7200]  net_rx_action+0x3ae/0xa90
[   49.598713][ T7200] 
[   49.601018][ T7200] read to 0xffff88812567b2ec of 4 bytes by task 7200 on cpu 0:
[   49.608533][ T7200]  tcp_grow_window.isra.0+0x6b/0x480
[   49.613789][ T7200]  tcp_event_data_recv+0x68f/0x990
[   49.618872][ T7200]  tcp_rcv_established+0xbfe/0xf50
[   49.623959][ T7200]  tcp_v4_do_rcv+0x381/0x4e0
[   49.628523][ T7200]  __release_sock+0x135/0x1e0
[   49.633212][ T7200]  release_sock+0x61/0x160
[   49.637607][ T7200]  tcp_recvmsg+0x63b/0x1a30
[   49.642120][ T7200]  inet_recvmsg+0xbb/0x250
[   49.646510][ T7200]  sock_recvmsg+0x92/0xb0
[   49.650815][ T7200]  sock_read_iter+0x15f/0x1e0
[   49.655482][ T7200]  new_sync_read+0x389/0x4f0
[   49.660047][ T7200]  __vfs_read+0xb1/0xc0
[   49.664183][ T7200]  vfs_read+0x143/0x2c0
[   49.668306][ T7200] 
[   49.670605][ T7200] Reported by Kernel Concurrency Sanitizer on:
[   49.676750][ T7200] CPU: 0 PID: 7200 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   49.684183][ T7200] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.694219][ T7200] ==================================================================
[   49.702263][ T7200] Kernel panic - not syncing: panic_on_warn set ...
[   49.708823][ T7200] CPU: 0 PID: 7200 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   49.716248][ T7200] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   49.726284][ T7200] Call Trace:
[   49.729560][ T7200]  dump_stack+0xf5/0x159
[   49.733789][ T7200]  panic+0x210/0x640
[   49.737662][ T7200]  ? sock_recvmsg+0x92/0xb0
[   49.742141][ T7200]  ? vprintk_func+0x8d/0x140
[   49.746726][ T7200]  kcsan_report.cold+0xc/0x10
[   49.751384][ T7200]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   49.756910][ T7200]  __tsan_read4+0x2c/0x30
[   49.761221][ T7200]  tcp_grow_window.isra.0+0x6b/0x480
[   49.766484][ T7200]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   49.772096][ T7200]  tcp_event_data_recv+0x68f/0x990
[   49.777189][ T7200]  tcp_rcv_established+0xbfe/0xf50
[   49.782279][ T7200]  ? ipv4_dst_check+0xc6/0xf0
[   49.786933][ T7200]  tcp_v4_do_rcv+0x381/0x4e0
[   49.791502][ T7200]  __release_sock+0x135/0x1e0
[   49.796204][ T7200]  release_sock+0x61/0x160
[   49.800686][ T7200]  tcp_recvmsg+0x63b/0x1a30
[   49.805227][ T7200]  inet_recvmsg+0xbb/0x250
[   49.809632][ T7200]  ? __tsan_read8+0x2c/0x30
[   49.814121][ T7200]  ? inet_sendpage+0x100/0x100
[   49.818869][ T7200]  sock_recvmsg+0x92/0xb0
[   49.823180][ T7200]  sock_read_iter+0x15f/0x1e0
[   49.827838][ T7200]  new_sync_read+0x389/0x4f0
[   49.832411][ T7200]  __vfs_read+0xb1/0xc0
[   49.836543][ T7200]  vfs_read+0x143/0x2c0
[   49.840678][ T7200]  ksys_read+0xd5/0x1b0
[   49.844811][ T7200]  __x64_sys_read+0x4c/0x60
[   49.849296][ T7200]  do_syscall_64+0xcc/0x370
[   49.853786][ T7200]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   49.859652][ T7200] RIP: 0033:0x47c530
[   49.863527][ T7200] 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
[   49.883150][ T7200] RSP: 002b:000000c4203377d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   49.891544][ T7200] RAX: ffffffffffffffda RBX: 0000000001881fa0 RCX: 000000000047c530
[   49.899493][ T7200] RDX: 0000000000001000 RSI: 000000c4202fe000 RDI: 0000000000000003
[   49.907559][ T7200] RBP: 000000c420337830 R08: 0000000000000000 R09: 0000000000000000
[   49.915517][ T7200] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000200
[   49.923465][ T7200] R13: ffffffffffffffff R14: 0000000000000002 R15: ffffffffffffffff
[   49.932848][ T7200] Kernel Offset: disabled
[   49.937164][ T7200] Rebooting in 86400 seconds..