Warning: Permanently added '10.128.0.42' (ECDSA) to the list of known hosts.
2019/10/21 16:07:32 fuzzer started
2019/10/21 16:07:33 dialing manager at 10.128.0.105:39747
2019/10/21 16:07:33 syscalls: 2524
2019/10/21 16:07:33 code coverage: enabled
2019/10/21 16:07:33 comparison tracing: enabled
2019/10/21 16:07:33 extra coverage: extra coverage is not supported by the kernel
2019/10/21 16:07:33 setuid sandbox: enabled
2019/10/21 16:07:33 namespace sandbox: enabled
2019/10/21 16:07:33 Android sandbox: /sys/fs/selinux/policy does not exist
2019/10/21 16:07:33 fault injection: enabled
2019/10/21 16:07:33 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2019/10/21 16:07:33 net packet injection: enabled
2019/10/21 16:07:33 net device setup: enabled
2019/10/21 16:07:33 concurrency sanitizer: enabled
syzkaller login: [   47.401041][ T7246] ==================================================================
[   47.409299][ T7246] BUG: KCSAN: data-race in tcp_poll / tcp_recvmsg
[   47.415687][ T7246] 
[   47.417996][ T7246] write to 0xffff888122b7eebc of 4 bytes by task 7242 on cpu 1:
[   47.425603][ T7246]  tcp_recvmsg+0xd86/0x1a30
[   47.430093][ T7246]  inet_recvmsg+0xbb/0x250
[   47.434503][ T7246]  sock_recvmsg+0x92/0xb0
[   47.438812][ T7246]  sock_read_iter+0x15f/0x1e0
[   47.443465][ T7246]  new_sync_read+0x389/0x4f0
[   47.448042][ T7246]  __vfs_read+0xb1/0xc0
[   47.452187][ T7246]  vfs_read+0x143/0x2c0
[   47.456325][ T7246]  ksys_read+0xd5/0x1b0
[   47.460512][ T7246]  __x64_sys_read+0x4c/0x60
[   47.465093][ T7246]  do_syscall_64+0xcc/0x370
[   47.469617][ T7246]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   47.475741][ T7246] 
[   47.478058][ T7246] read to 0xffff888122b7eebc of 4 bytes by task 7246 on cpu 0:
[   47.485584][ T7246]  tcp_poll+0x1cc/0x6b0
[   47.489815][ T7246]  sock_poll+0xed/0x250
[   47.493962][ T7246]  ep_item_poll.isra.0+0x90/0x190
[   47.498974][ T7246]  ep_send_events_proc+0x113/0x590
[   47.504164][ T7246]  ep_scan_ready_list.constprop.0+0x189/0x500
[   47.510296][ T7246]  ep_poll+0xe3/0x900
[   47.514261][ T7246]  do_epoll_wait+0x162/0x180
[   47.518839][ T7246]  __x64_sys_epoll_pwait+0xcd/0x180
[   47.524017][ T7246]  do_syscall_64+0xcc/0x370
[   47.528499][ T7246]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   47.534470][ T7246] 
[   47.536782][ T7246] Reported by Kernel Concurrency Sanitizer on:
[   47.542913][ T7246] CPU: 0 PID: 7246 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   47.554492][ T7246] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.564783][ T7246] ==================================================================
[   47.572835][ T7246] Kernel panic - not syncing: panic_on_warn set ...
[   47.579402][ T7246] CPU: 0 PID: 7246 Comm: syz-fuzzer Not tainted 5.4.0-rc3+ #0
[   47.586835][ T7246] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.597050][ T7246] Call Trace:
[   47.600335][ T7246]  dump_stack+0xf5/0x159
[   47.604571][ T7246]  panic+0x210/0x640
[   47.608545][ T7246]  ? do_syscall_64+0xcc/0x370
[   47.613215][ T7246]  ? vprintk_func+0x8d/0x140
[   47.617796][ T7246]  kcsan_report.cold+0xc/0x10
[   47.622462][ T7246]  __kcsan_setup_watchpoint+0x32e/0x4a0
[   47.628004][ T7246]  __tsan_read4+0x2c/0x30
[   47.632326][ T7246]  tcp_poll+0x1cc/0x6b0
[   47.636468][ T7246]  ? tcp_alloc_md5sig_pool+0x320/0x320
[   47.641922][ T7246]  sock_poll+0xed/0x250
[   47.646060][ T7246]  ? sock_read_iter+0x1e0/0x1e0
[   47.650890][ T7246]  ep_item_poll.isra.0+0x90/0x190
[   47.655907][ T7246]  ep_send_events_proc+0x113/0x590
[   47.661286][ T7246]  ? preempt_schedule_irq+0x72/0x90
[   47.666471][ T7246]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   47.672102][ T7246]  ep_scan_ready_list.constprop.0+0x189/0x500
[   47.678175][ T7246]  ? ep_loop_check_proc+0x2f0/0x2f0
[   47.683375][ T7246]  ep_poll+0xe3/0x900
[   47.687351][ T7246]  ? __fget+0xb8/0x1d0
[   47.691414][ T7246]  ? __kcsan_setup_watchpoint+0x6b/0x4a0
[   47.697460][ T7246]  ? __fget_light+0xaf/0x190
[   47.702040][ T7246]  do_epoll_wait+0x162/0x180
[   47.706703][ T7246]  __x64_sys_epoll_pwait+0xcd/0x180
[   47.711881][ T7246]  do_syscall_64+0xcc/0x370
[   47.716368][ T7246]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   47.722364][ T7246] RIP: 0033:0x45b300
[   47.726243][ T7246] 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
[   47.747154][ T7246] RSP: 002b:000000c42014b860 EFLAGS: 00000246 ORIG_RAX: 0000000000000119
[   47.755544][ T7246] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000045b300
[   47.763499][ T7246] RDX: 0000000000000080 RSI: 000000c42014b8a0 RDI: 0000000000000004
[   47.771560][ T7246] RBP: 000000c42014bea0 R08: 0000000000000000 R09: 00000000000020f4
[   47.779902][ T7246] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000000000a0
[   47.787864][ T7246] R13: 00000000000000ff R14: 00007f6739a48000 R15: 0000000000000004
[   47.797244][ T7246] Kernel Offset: disabled
[   47.801573][ T7246] Rebooting in 86400 seconds..