Warning: Permanently added '10.128.1.35' (ECDSA) to the list of known hosts.
2019/10/25 23:40:57 fuzzer started
2019/10/25 23:40:58 dialing manager at 10.128.0.105:32811
2019/10/25 23:40:58 syscalls: 2533
2019/10/25 23:40:58 code coverage: enabled
2019/10/25 23:40:58 comparison tracing: enabled
2019/10/25 23:40:58 extra coverage: extra coverage is not supported by the kernel
2019/10/25 23:40:58 setuid sandbox: enabled
2019/10/25 23:40:58 namespace sandbox: enabled
2019/10/25 23:40:58 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/25 23:40:58 fault injection: enabled
2019/10/25 23:40:58 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/25 23:40:58 net packet injection: enabled
2019/10/25 23:40:58 net device setup: enabled
2019/10/25 23:40:58 concurrency sanitizer: enabled
2019/10/25 23:40:59 adding functions to KCSAN blacklist: 'echo_char' 'ktime_get_real_seconds' 'tomoyo_supervisor' '__hrtimer_run_queues' 'pid_update_inode' 'common_perm_cond' 
syzkaller login: [   43.249281][ T7179] ==================================================================
[   43.257871][ T7179] BUG: KCSAN: data-race in tcp_add_backlog / tcp_recvmsg
[   43.265044][ T7179] 
[   43.267532][ T7179] write to 0xffff888126bc4a38 of 8 bytes by interrupt on cpu 0:
[   43.275154][ T7179]  tcp_add_backlog+0x45a/0xcc0
[   43.279907][ T7179]  tcp_v4_rcv+0x1a60/0x1bb0
[   43.284418][ T7179]  ip_protocol_deliver_rcu+0x4d/0x420
[   43.291881][ T7179]  ip_local_deliver_finish+0x110/0x140
[   43.297328][ T7179]  ip_local_deliver+0x133/0x210
[   43.302156][ T7179]  ip_rcv_finish+0x121/0x160
[   43.306893][ T7179]  ip_rcv+0x18f/0x1a0
[   43.310867][ T7179]  __netif_receive_skb_one_core+0xa7/0xe0
[   43.316588][ T7179]  __netif_receive_skb+0x37/0xf0
[   43.321543][ T7179]  netif_receive_skb_internal+0x59/0x190
[   43.327151][ T7179]  napi_gro_receive+0x28f/0x330
[   43.331977][ T7179]  receive_buf+0x284/0x30b0
[   43.336467][ T7179]  virtnet_poll+0x436/0x7d0
[   43.340957][ T7179]  net_rx_action+0x3ae/0xa90
[   43.345531][ T7179] 
[   43.347871][ T7179] read to 0xffff888126bc4a38 of 8 bytes by task 7179 on cpu 1:
[   43.355843][ T7179]  tcp_recvmsg+0x470/0x1a30
[   43.360320][ T7179]  inet_recvmsg+0xbb/0x250
[   43.364732][ T7179]  sock_recvmsg+0x92/0xb0
[   43.369039][ T7179]  sock_read_iter+0x15f/0x1e0
[   43.373702][ T7179]  new_sync_read+0x389/0x4f0
[   43.378267][ T7179]  __vfs_read+0xb1/0xc0
[   43.382945][ T7179]  vfs_read+0x143/0x2c0
[   43.387079][ T7179]  ksys_read+0xd5/0x1b0
[   43.391218][ T7179]  __x64_sys_read+0x4c/0x60
[   43.395742][ T7179]  do_syscall_64+0xcc/0x370
[   43.400233][ T7179]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   43.406215][ T7179] 
[   43.408517][ T7179] Reported by Kernel Concurrency Sanitizer on:
[   43.414657][ T7179] CPU: 1 PID: 7179 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   43.422083][ T7179] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   43.432201][ T7179] ==================================================================
[   43.441467][ T7179] Kernel panic - not syncing: panic_on_warn set ...
[   43.449182][ T7179] CPU: 1 PID: 7179 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   43.460615][ T7179] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   43.470951][ T7179] Call Trace:
[   43.474224][ T7179]  dump_stack+0xf5/0x159
[   43.478448][ T7179]  panic+0x210/0x640
[   43.482425][ T7179]  ? __x64_sys_read+0x4c/0x60
[   43.487090][ T7179]  ? vprintk_func+0x8d/0x140
[   43.491684][ T7179]  kcsan_report.cold+0xc/0x10
[   43.496371][ T7179]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   43.501989][ T7179]  __tsan_read8+0x2c/0x30
[   43.506308][ T7179]  tcp_recvmsg+0x470/0x1a30
[   43.510886][ T7179]  ? debug_smp_processor_id+0x4c/0x172
[   43.516426][ T7179]  inet_recvmsg+0xbb/0x250
[   43.520853][ T7179]  ? __tsan_read8+0x2c/0x30
[   43.525355][ T7179]  ? inet_sendpage+0x100/0x100
[   43.530290][ T7179]  sock_recvmsg+0x92/0xb0
[   43.534620][ T7179]  sock_read_iter+0x15f/0x1e0
[   43.539287][ T7179]  new_sync_read+0x389/0x4f0
[   43.543894][ T7179]  __vfs_read+0xb1/0xc0
[   43.548046][ T7179]  vfs_read+0x143/0x2c0
[   43.552193][ T7179]  ksys_read+0xd5/0x1b0
[   43.556331][ T7179]  __x64_sys_read+0x4c/0x60
[   43.560815][ T7179]  do_syscall_64+0xcc/0x370
[   43.565329][ T7179]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   43.571197][ T7179] RIP: 0033:0x47c530
[   43.575793][ T7179] 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
[   43.595380][ T7179] RSP: 002b:000000c420399810 EFLAGS: 00000202 ORIG_RAX: 0000000000000000
[   43.603945][ T7179] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   43.612014][ T7179] RDX: 0000000000001000 RSI: 000000c4200a6000 RDI: 0000000000000003
[   43.620017][ T7179] RBP: 000000c420399868 R08: 0000000000000000 R09: 0000000000000000
[   43.627988][ T7179] R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000008
[   43.636046][ T7179] R13: ffffffffffffffff R14: 0000000000000004 R15: ffffffffffffffff
[   43.645896][ T7179] Kernel Offset: disabled
[   43.650357][ T7179] Rebooting in 86400 seconds..