Warning: Permanently added '10.128.10.36' (ECDSA) to the list of known hosts.
2019/10/30 20:44:31 fuzzer started
2019/10/30 20:44:33 dialing manager at 10.128.0.105:37477
2019/10/30 20:44:33 syscalls: 2540
2019/10/30 20:44:33 code coverage: enabled
2019/10/30 20:44:33 comparison tracing: enabled
2019/10/30 20:44:33 extra coverage: extra coverage is not supported by the kernel
2019/10/30 20:44:33 setuid sandbox: enabled
2019/10/30 20:44:33 namespace sandbox: enabled
2019/10/30 20:44:33 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/30 20:44:33 fault injection: enabled
2019/10/30 20:44:33 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/30 20:44:33 net packet injection: enabled
2019/10/30 20:44:33 net device setup: enabled
2019/10/30 20:44:33 concurrency sanitizer: enabled
2019/10/30 20:44:33 adding functions to KCSAN blacklist: '__hrtimer_run_queues' 'mod_timer' 'tomoyo_supervisor' 
syzkaller login: [   58.618411][ T7295] ==================================================================
[   58.626668][ T7295] BUG: KCSAN: data-race in tcp_add_backlog / tcp_recvmsg
[   58.633678][ T7295] 
[   58.636008][ T7295] write to 0xffff888126fa3338 of 8 bytes by interrupt on cpu 1:
[   58.643622][ T7295]  tcp_add_backlog+0x45a/0xcc0
[   58.648365][ T7295]  tcp_v4_rcv+0x1a60/0x1bb0
[   58.652873][ T7295]  ip_protocol_deliver_rcu+0x4d/0x420
[   58.658240][ T7295]  ip_local_deliver_finish+0x110/0x140
[   58.663678][ T7295]  ip_local_deliver+0x133/0x210
[   58.668518][ T7295]  ip_rcv_finish+0x121/0x160
[   58.673094][ T7295]  ip_rcv+0x18f/0x1a0
[   58.677064][ T7295]  __netif_receive_skb_one_core+0xa7/0xe0
[   58.682763][ T7295]  __netif_receive_skb+0x37/0xf0
[   58.687679][ T7295]  netif_receive_skb_internal+0x59/0x190
[   58.693288][ T7295]  napi_gro_receive+0x28f/0x330
[   58.698121][ T7295]  receive_buf+0x284/0x30b0
[   58.702617][ T7295]  virtnet_poll+0x436/0x7d0
[   58.707110][ T7295]  net_rx_action+0x3ae/0xa90
[   58.711671][ T7295] 
[   58.713984][ T7295] read to 0xffff888126fa3338 of 8 bytes by task 7295 on cpu 0:
[   58.721512][ T7295]  tcp_recvmsg+0x470/0x1a30
[   58.726015][ T7295]  inet_recvmsg+0xbb/0x250
[   58.730439][ T7295]  sock_recvmsg+0x92/0xb0
[   58.734766][ T7295]  sock_read_iter+0x15f/0x1e0
[   58.739457][ T7295]  new_sync_read+0x389/0x4f0
[   58.744025][ T7295]  __vfs_read+0xb1/0xc0
[   58.748160][ T7295]  vfs_read+0x143/0x2c0
[   58.752291][ T7295]  ksys_read+0xd5/0x1b0
[   58.756512][ T7295]  __x64_sys_read+0x4c/0x60
[   58.760994][ T7295]  do_syscall_64+0xcc/0x370
[   58.765498][ T7295]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   58.771378][ T7295] 
[   58.773681][ T7295] Reported by Kernel Concurrency Sanitizer on:
[   58.779838][ T7295] CPU: 0 PID: 7295 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   58.787269][ T7295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   58.797302][ T7295] ==================================================================
[   58.805464][ T7295] Kernel panic - not syncing: panic_on_warn set ...
[   58.812031][ T7295] CPU: 0 PID: 7295 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   58.819459][ T7295] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   58.829603][ T7295] Call Trace:
[   58.832878][ T7295]  dump_stack+0xf5/0x159
[   58.837103][ T7295]  panic+0x210/0x640
[   58.840986][ T7295]  ? __x64_sys_read+0x4c/0x60
[   58.845657][ T7295]  ? vprintk_func+0x8d/0x140
[   58.850231][ T7295]  kcsan_report.cold+0xc/0x10
[   58.854909][ T7295]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   58.860433][ T7295]  __tsan_read8+0x2c/0x30
[   58.864757][ T7295]  tcp_recvmsg+0x470/0x1a30
[   58.869380][ T7295]  inet_recvmsg+0xbb/0x250
[   58.873883][ T7295]  ? __tsan_read8+0x2c/0x30
[   58.878575][ T7295]  ? inet_sendpage+0x100/0x100
[   58.883658][ T7295]  sock_recvmsg+0x92/0xb0
[   58.888001][ T7295]  sock_read_iter+0x15f/0x1e0
[   58.892667][ T7295]  new_sync_read+0x389/0x4f0
[   58.897256][ T7295]  __vfs_read+0xb1/0xc0
[   58.901400][ T7295]  vfs_read+0x143/0x2c0
[   58.905669][ T7295]  ksys_read+0xd5/0x1b0
[   58.909810][ T7295]  __x64_sys_read+0x4c/0x60
[   58.914388][ T7295]  do_syscall_64+0xcc/0x370
[   58.918898][ T7295]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   58.924772][ T7295] RIP: 0033:0x47c530
[   58.928654][ T7295] 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
[   58.948261][ T7295] RSP: 002b:000000c4202df7d8 EFLAGS: 00000212 ORIG_RAX: 0000000000000000
[   58.956655][ T7295] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   58.964619][ T7295] RDX: 0000000000001000 RSI: 000000c4204a2000 RDI: 0000000000000003
[   58.972742][ T7295] RBP: 000000c4202df830 R08: 0000000000000000 R09: 0000000000000000
[   58.980694][ T7295] R10: 0000000000000000 R11: 0000000000000212 R12: 0000000000000200
[   58.988647][ T7295] R13: ffffffffffffffff R14: 0000000000000020 R15: ffffffffffffffff
[   58.998074][ T7295] Kernel Offset: disabled
[   59.002411][ T7295] Rebooting in 86400 seconds..