Warning: Permanently added '10.128.0.22' (ECDSA) to the list of known hosts.
2019/10/09 16:08:24 fuzzer started
2019/10/09 16:08:26 dialing manager at 10.128.0.105:43333
2019/10/09 16:08:26 syscalls: 2523
2019/10/09 16:08:26 code coverage: enabled
2019/10/09 16:08:26 comparison tracing: enabled
2019/10/09 16:08:26 extra coverage: extra coverage is not supported by the kernel
2019/10/09 16:08:26 setuid sandbox: enabled
2019/10/09 16:08:26 namespace sandbox: enabled
2019/10/09 16:08:26 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/09 16:08:26 fault injection: enabled
2019/10/09 16:08:26 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/09 16:08:26 net packet injection: enabled
2019/10/09 16:08:26 net device setup: enabled
2019/10/09 16:08:26 concurrency sanitizer: enabled
syzkaller login: [   50.896845][ T7257] ==================================================================
[   50.904968][ T7257] BUG: KCSAN: data-race in tcp_poll / tcp_recvmsg
[   50.911372][ T7257] 
[   50.913699][ T7257] write to 0xffff888124257774 of 4 bytes by task 7259 on cpu 0:
[   50.921317][ T7257]  tcp_recvmsg+0xd86/0x1a30
[   50.925808][ T7257]  inet_recvmsg+0xbb/0x250
[   50.930209][ T7257]  sock_recvmsg+0x92/0xb0
[   50.935043][ T7257]  sock_read_iter+0x15f/0x1e0
[   50.939709][ T7257]  new_sync_read+0x389/0x4f0
[   50.944285][ T7257]  __vfs_read+0xb1/0xc0
[   50.948427][ T7257]  vfs_read+0x143/0x2c0
[   50.952566][ T7257]  ksys_read+0xd5/0x1b0
[   50.956718][ T7257]  __x64_sys_read+0x4c/0x60
[   50.961218][ T7257]  do_syscall_64+0xcf/0x2f0
[   50.965712][ T7257]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   50.971582][ T7257] 
[   50.973904][ T7257] read to 0xffff888124257774 of 4 bytes by task 7257 on cpu 1:
[   50.981431][ T7257]  tcp_poll+0x1cc/0x6b0
[   50.985573][ T7257]  sock_poll+0xed/0x250
[   50.989734][ T7257]  ep_item_poll.isra.0+0x90/0x190
[   50.994753][ T7257]  ep_send_events_proc+0x113/0x5c0
[   50.999852][ T7257]  ep_scan_ready_list.constprop.0+0x189/0x500
[   51.005910][ T7257]  ep_poll+0xe3/0x900
[   51.009892][ T7257]  do_epoll_wait+0x162/0x180
[   51.014462][ T7257]  __x64_sys_epoll_pwait+0xcd/0x170
[   51.019669][ T7257]  do_syscall_64+0xcf/0x2f0
[   51.024151][ T7257]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   51.030011][ T7257] 
[   51.032325][ T7257] Reported by Kernel Concurrency Sanitizer on:
[   51.038456][ T7257] CPU: 1 PID: 7257 Comm: syz-fuzzer Not tainted 5.3.0+ #0
[   51.045543][ T7257] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   51.055570][ T7257] ==================================================================
[   51.063606][ T7257] Kernel panic - not syncing: panic_on_warn set ...
[   51.070179][ T7257] CPU: 1 PID: 7257 Comm: syz-fuzzer Not tainted 5.3.0+ #0
[   51.077269][ T7257] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   51.087393][ T7257] Call Trace:
[   51.090671][ T7257]  dump_stack+0xf5/0x159
[   51.094906][ T7257]  panic+0x209/0x639
[   51.098783][ T7257]  ? do_syscall_64+0xcf/0x2f0
[   51.103451][ T7257]  ? vprintk_func+0x8d/0x140
[   51.108119][ T7257]  kcsan_report.cold+0xc/0x1b
[   51.112776][ T7257]  __kcsan_setup_watchpoint+0x3ee/0x510
[   51.118310][ T7257]  __tsan_read4+0x2c/0x30
[   51.122618][ T7257]  tcp_poll+0x1cc/0x6b0
[   51.126749][ T7257]  ? tcp_alloc_md5sig_pool+0x320/0x320
[   51.132197][ T7257]  sock_poll+0xed/0x250
[   51.136333][ T7257]  ? sock_read_iter+0x1e0/0x1e0
[   51.141163][ T7257]  ep_item_poll.isra.0+0x90/0x190
[   51.146164][ T7257]  ep_send_events_proc+0x113/0x5c0
[   51.151252][ T7257]  ? __kcsan_setup_watchpoint+0x96/0x510
[   51.156871][ T7257]  ep_scan_ready_list.constprop.0+0x189/0x500
[   51.162962][ T7257]  ? ep_loop_check_proc+0x2f0/0x2f0
[   51.168184][ T7257]  ep_poll+0xe3/0x900
[   51.172143][ T7257]  ? __fget+0xb8/0x1d0
[   51.176197][ T7257]  ? __kcsan_setup_watchpoint+0x96/0x510
[   51.181805][ T7257]  ? __fget_light+0xaf/0x190
[   51.186547][ T7257]  do_epoll_wait+0x162/0x180
[   51.191120][ T7257]  __x64_sys_epoll_pwait+0xcd/0x170
[   51.196311][ T7257]  do_syscall_64+0xcf/0x2f0
[   51.200798][ T7257]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   51.206666][ T7257] RIP: 0033:0x45b300
[   51.210545][ T7257] 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
[   51.230127][ T7257] RSP: 002b:000000c42004f8d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000119
[   51.238516][ T7257] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000045b300
[   51.246461][ T7257] RDX: 0000000000000080 RSI: 000000c42004f918 RDI: 0000000000000004
[   51.254408][ T7257] RBP: 000000c42004ff18 R08: 0000000000000000 R09: 00000000000023b2
[   51.262357][ T7257] R10: 0000000000000000 R11: 0000000000000246 R12: 000000000042f0a0
[   51.270306][ T7257] R13: 00000000000000f1 R14: 0000000000000011 R15: 0000000000000000
[   51.279027][ T7257] Kernel Offset: disabled
[   51.283352][ T7257] Rebooting in 86400 seconds..