Warning: Permanently added '10.128.15.200' (ECDSA) to the list of known hosts.
2019/10/07 00:28:14 fuzzer started
2019/10/07 00:28:15 dialing manager at 10.128.0.105:35709
2019/10/07 00:28:15 syscalls: 2523
2019/10/07 00:28:15 code coverage: enabled
2019/10/07 00:28:15 comparison tracing: enabled
2019/10/07 00:28:15 extra coverage: extra coverage is not supported by the kernel
2019/10/07 00:28:15 setuid sandbox: enabled
2019/10/07 00:28:15 namespace sandbox: enabled
2019/10/07 00:28:15 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/07 00:28:15 fault injection: enabled
2019/10/07 00:28:15 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/07 00:28:15 net packet injection: enabled
2019/10/07 00:28:15 net device setup: enabled
2019/10/07 00:28:15 concurrency sanitizer: enabled
syzkaller login: [   55.690435][ T7246] ==================================================================
[   55.698696][ T7246] BUG: KCSAN: data-race in tcp_poll / tcp_recvmsg
[   55.705279][ T7246] 
[   55.707651][ T7246] read to 0xffff88811c56d774 of 4 bytes by task 7247 on cpu 1:
[   55.715228][ T7246]  tcp_poll+0x1cc/0x6b0
[   55.719381][ T7246]  sock_poll+0xed/0x250
[   55.723703][ T7246]  ep_item_poll.isra.0+0x90/0x190
[   55.728726][ T7246]  ep_send_events_proc+0x113/0x5c0
[   55.733837][ T7246]  ep_scan_ready_list.constprop.0+0x189/0x500
[   55.739900][ T7246]  ep_poll+0xe3/0x900
[   55.744048][ T7246]  do_epoll_wait+0x162/0x180
[   55.749317][ T7246]  __x64_sys_epoll_pwait+0xcd/0x170
[   55.754506][ T7246]  do_syscall_64+0xcf/0x2f0
[   55.759024][ T7246]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   55.764999][ T7246] 
[   55.767464][ T7246] write to 0xffff88811c56d774 of 4 bytes by task 7246 on cpu 0:
[   55.775215][ T7246]  tcp_recvmsg+0xd86/0x1a30
[   55.780020][ T7246]  inet_recvmsg+0xbb/0x250
[   55.784526][ T7246]  sock_recvmsg+0x92/0xb0
[   55.789092][ T7246]  sock_read_iter+0x15f/0x1e0
[   55.793936][ T7246]  new_sync_read+0x389/0x4f0
[   55.798633][ T7246]  __vfs_read+0xb1/0xc0
[   55.802858][ T7246]  vfs_read+0x143/0x2c0
[   55.806991][ T7246]  ksys_read+0xd5/0x1b0
[   55.811145][ T7246]  __x64_sys_read+0x4c/0x60
[   55.815700][ T7246]  do_syscall_64+0xcf/0x2f0
[   55.820649][ T7246]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   55.826775][ T7246] 
[   55.829087][ T7246] Reported by Kernel Concurrency Sanitizer on:
[   55.835226][ T7246] CPU: 0 PID: 7246 Comm: syz-fuzzer Not tainted 5.3.0+ #0
[   55.842432][ T7246] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.852655][ T7246] ==================================================================
[   55.860715][ T7246] Kernel panic - not syncing: panic_on_warn set ...
[   55.867524][ T7246] CPU: 0 PID: 7246 Comm: syz-fuzzer Not tainted 5.3.0+ #0
[   55.874613][ T7246] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   55.884734][ T7246] Call Trace:
[   55.888011][ T7246]  dump_stack+0xf5/0x159
[   55.892234][ T7246]  panic+0x209/0x639
[   55.896132][ T7246]  ? vprintk_func+0x8d/0x140
[   55.900762][ T7246]  kcsan_report.cold+0x57/0xeb
[   55.905617][ T7246]  __kcsan_setup_watchpoint+0x342/0x500
[   55.911298][ T7246]  __tsan_write4+0x32/0x40
[   55.915713][ T7246]  tcp_recvmsg+0xd86/0x1a30
[   55.920219][ T7246]  inet_recvmsg+0xbb/0x250
[   55.924626][ T7246]  ? __tsan_read8+0x2c/0x30
[   55.929112][ T7246]  ? inet_sendpage+0x100/0x100
[   55.933980][ T7246]  sock_recvmsg+0x92/0xb0
[   55.938814][ T7246]  sock_read_iter+0x15f/0x1e0
[   55.943547][ T7246]  new_sync_read+0x389/0x4f0
[   55.948155][ T7246]  __vfs_read+0xb1/0xc0
[   55.952338][ T7246]  vfs_read+0x143/0x2c0
[   55.956479][ T7246]  ksys_read+0xd5/0x1b0
[   55.960621][ T7246]  __x64_sys_read+0x4c/0x60
[   55.965112][ T7246]  do_syscall_64+0xcf/0x2f0
[   55.969613][ T7246]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   55.975546][ T7246] RIP: 0033:0x47c530
[   55.979780][ T7246] 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
[   55.999467][ T7246] RSP: 002b:000000c4202d38c0 EFLAGS: 00000206 ORIG_RAX: 0000000000000000
[   56.007873][ T7246] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   56.015845][ T7246] RDX: 0000000000001000 RSI: 000000c420054000 RDI: 0000000000000003
[   56.023842][ T7246] RBP: 000000c4202d3918 R08: 0000000000000000 R09: 0000000000000000
[   56.031806][ T7246] R10: 0000000000000000 R11: 0000000000000206 R12: 00000000000000e6
[   56.039809][ T7246] R13: 00000000000000e5 R14: 0000000000000200 R15: ffffffffffffffff
[   56.049613][ T7246] Kernel Offset: disabled
[   56.054206][ T7246] Rebooting in 86400 seconds..