Warning: Permanently added '10.128.0.25' (ECDSA) to the list of known hosts.
2019/10/19 17:50:36 fuzzer started
2019/10/19 17:50:38 dialing manager at 10.128.0.105:43535
2019/10/19 17:50:38 syscalls: 2524
2019/10/19 17:50:38 code coverage: enabled
2019/10/19 17:50:38 comparison tracing: enabled
2019/10/19 17:50:38 extra coverage: extra coverage is not supported by the kernel
2019/10/19 17:50:38 setuid sandbox: enabled
2019/10/19 17:50:38 namespace sandbox: enabled
2019/10/19 17:50:38 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/19 17:50:38 fault injection: enabled
2019/10/19 17:50:38 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/19 17:50:38 net packet injection: enabled
2019/10/19 17:50:38 net device setup: enabled
2019/10/19 17:50:38 concurrency sanitizer: enabled
syzkaller login: [   45.885876][ T7219] ==================================================================
[   45.894533][ T7219] BUG: KCSAN: data-race in tcp_poll / tcp_recvmsg
[   45.900929][ T7219] 
[   45.903248][ T7219] write to 0xffff888125fb17bc of 4 bytes by task 7207 on cpu 0:
[   45.910869][ T7219]  tcp_recvmsg+0xd86/0x1a30
[   45.915362][ T7219]  inet_recvmsg+0xbb/0x250
[   45.919769][ T7219]  sock_recvmsg+0x92/0xb0
[   45.924151][ T7219]  sock_read_iter+0x15f/0x1e0
[   45.928935][ T7219]  new_sync_read+0x389/0x4f0
[   45.933518][ T7219]  __vfs_read+0xb1/0xc0
[   45.937665][ T7219]  vfs_read+0x143/0x2c0
[   45.941843][ T7219]  ksys_read+0xd5/0x1b0
[   45.945992][ T7219]  __x64_sys_read+0x4c/0x60
[   45.950489][ T7219]  do_syscall_64+0xcc/0x370
[   45.954982][ T7219]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   45.960866][ T7219] 
[   45.963206][ T7219] read to 0xffff888125fb17bc of 4 bytes by task 7219 on cpu 1:
[   45.970737][ T7219]  tcp_poll+0x1cc/0x6b0
[   45.974880][ T7219]  sock_poll+0xed/0x250
[   45.979024][ T7219]  ep_item_poll.isra.0+0x90/0x190
[   45.984034][ T7219]  ep_send_events_proc+0x113/0x590
[   45.989219][ T7219]  ep_scan_ready_list.constprop.0+0x189/0x500
[   45.995284][ T7219]  ep_poll+0xe3/0x900
[   45.999255][ T7219]  do_epoll_wait+0x162/0x180
[   46.003834][ T7219]  __x64_sys_epoll_pwait+0xcd/0x180
[   46.009019][ T7219]  do_syscall_64+0xcc/0x370
[   46.013511][ T7219]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   46.019380][ T7219] 
[   46.021715][ T7219] Reported by Kernel Concurrency Sanitizer on:
[   46.027885][ T7219] CPU: 1 PID: 7219 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   46.035333][ T7219] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.045384][ T7219] ==================================================================
[   46.053431][ T7219] Kernel panic - not syncing: panic_on_warn set ...
[   46.060020][ T7219] CPU: 1 PID: 7219 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   46.067460][ T7219] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.077510][ T7219] Call Trace:
[   46.080795][ T7219]  dump_stack+0xf5/0x159
[   46.085027][ T7219]  panic+0x210/0x640
[   46.088932][ T7219]  ? do_syscall_64+0xcc/0x370
[   46.093605][ T7219]  ? vprintk_func+0x8d/0x140
[   46.098195][ T7219]  kcsan_report.cold+0xc/0x10
[   46.102871][ T7219]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   46.108409][ T7219]  __tsan_read4+0x2c/0x30
[   46.112753][ T7219]  tcp_poll+0x1cc/0x6b0
[   46.116907][ T7219]  ? tcp_alloc_md5sig_pool+0x320/0x320
[   46.122370][ T7219]  sock_poll+0xed/0x250
[   46.126521][ T7219]  ? sock_read_iter+0x1e0/0x1e0
[   46.131363][ T7219]  ep_item_poll.isra.0+0x90/0x190
[   46.136382][ T7219]  ep_send_events_proc+0x113/0x590
[   46.141481][ T7219]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   46.147111][ T7219]  ep_scan_ready_list.constprop.0+0x189/0x500
[   46.153172][ T7219]  ? ep_loop_check_proc+0x2f0/0x2f0
[   46.158366][ T7219]  ep_poll+0xe3/0x900
[   46.162338][ T7219]  ? __fget+0xb8/0x1d0
[   46.166412][ T7219]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   46.172046][ T7219]  ? __fget_light+0xaf/0x190
[   46.176629][ T7219]  do_epoll_wait+0x162/0x180
[   46.181213][ T7219]  __x64_sys_epoll_pwait+0xcd/0x180
[   46.187038][ T7219]  do_syscall_64+0xcc/0x370
[   46.191546][ T7219]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   46.197434][ T7219] RIP: 0033:0x45b300
[   46.201331][ T7219] Code: 0f 05 89 44 24 20 c3 cc cc cc 8b 7c 24 08 48 8b 74 24 10 8b 54 24 18 44 8b 54 24 1c 49 c7 c0 00 00 00 00 b8 19 01 00 00 0f 05 <89> 44 24 20 c3 cc cc cc cc cc cc cc cc cc cc cc 8b 7c 24 08 48 c7
[   46.220922][ T7219] RSP: 002b:000000c4202d18c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000119
[   46.229349][ T7219] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000045b300
[   46.237311][ T7219] RDX: 0000000000000080 RSI: 000000c4202d1908 RDI: 0000000000000004
[   46.245283][ T7219] RBP: 000000c4202d1f08 R08: 0000000000000000 R09: 0000000000000004
[   46.253242][ T7219] R10: 0000000000000000 R11: 0000000000000246 R12: 000000c4204e9800
[   46.261201][ T7219] R13: 0000000000000053 R14: 0000000000000000 R15: 0000000000000000
[   46.270439][ T7219] Kernel Offset: disabled
[   46.274815][ T7219] Rebooting in 86400 seconds..