[  OK  ] Reached target Login Prompts.
[  OK  ] Reached target Multi-User System.
[  OK  ] Reached target Graphical Interface.
         Starting Update UTMP about System Runlevel Changes...
[  OK  ] Started Update UTMP about System Runlevel Changes.


Debian GNU/Linux 9 syzkaller ttyS0

Warning: Permanently added '10.128.0.223' (ECDSA) to the list of known hosts.
2020/06/11 00:31:07 fuzzer started
2020/06/11 00:31:07 dialing manager at 10.128.0.105:37751
2020/06/11 00:31:07 syscalls: 3078
2020/06/11 00:31:07 code coverage: enabled
2020/06/11 00:31:07 comparison tracing: enabled
2020/06/11 00:31:07 extra coverage: enabled
2020/06/11 00:31:07 setuid sandbox: enabled
2020/06/11 00:31:07 namespace sandbox: enabled
2020/06/11 00:31:07 Android sandbox: /sys/fs/selinux/policy does not exist
2020/06/11 00:31:07 fault injection: enabled
2020/06/11 00:31:07 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/06/11 00:31:07 net packet injection: enabled
2020/06/11 00:31:07 net device setup: enabled
2020/06/11 00:31:07 concurrency sanitizer: enabled
2020/06/11 00:31:07 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/06/11 00:31:07 USB emulation: enabled
2020/06/11 00:31:07 adding functions to KCSAN blacklist: 'run_timer_softirq' 'alloc_pid' 'tick_nohz_next_event' 'ep_poll' 
syzkaller login: [   53.603397][ T8892] ==================================================================
[   53.611839][ T8892] BUG: KCSAN: data-race in complete_signal / futex_wait_queue_me
[   53.619526][ T8892] 
[   53.621838][ T8892] write to 0xffff888121fff0a4 of 4 bytes by task 8902 on cpu 0:
[   53.629444][ T8892]  futex_wait_queue_me+0x17d/0x290
[   53.634637][ T8892]  futex_wait+0x17e/0x3a0
[   53.638943][ T8892]  do_futex+0xe2/0x15b0
[   53.643087][ T8892]  __x64_sys_futex+0x2dc/0x410
[   53.647830][ T8892]  do_syscall_64+0xc7/0x3b0
[   53.652311][ T8892]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   53.658181][ T8892] 
[   53.660488][ T8892] read to 0xffff888121fff0a4 of 4 bytes by task 8892 on cpu 1:
[   53.668031][ T8892]  complete_signal+0x85/0x5c0
[   53.672682][ T8892]  __send_signal+0x675/0x8a0
[   53.677275][ T8892]  send_signal+0x211/0x2a0
[   53.681693][ T8892]  do_send_sig_info+0x59/0xc0
[   53.686364][ T8892]  do_send_specific+0xd8/0x100
[   53.691114][ T8892]  do_tkill+0xf8/0x130
[   53.695290][ T8892]  __x64_sys_tgkill+0x6d/0x90
[   53.700211][ T8892]  do_syscall_64+0xc7/0x3b0
[   53.704798][ T8892]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   53.710657][ T8892] 
[   53.712982][ T8892] Reported by Kernel Concurrency Sanitizer on:
[   53.719123][ T8892] CPU: 1 PID: 8892 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0
[   53.727355][ T8892] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   53.737526][ T8892] ==================================================================
[   53.745992][ T8892] Kernel panic - not syncing: panic_on_warn set ...
[   53.752727][ T8892] CPU: 1 PID: 8892 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0
[   53.761236][ T8892] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   53.771448][ T8892] Call Trace:
[   53.774764][ T8892]  dump_stack+0x11d/0x187
[   53.779083][ T8892]  panic+0x210/0x640
[   53.782982][ T8892]  ? vprintk_func+0x89/0x13a
[   53.787740][ T8892]  kcsan_report.cold+0xc/0x1a
[   53.792616][ T8892]  kcsan_setup_watchpoint+0x3fb/0x440
[   53.798697][ T8892]  complete_signal+0x85/0x5c0
[   53.803807][ T8892]  ? __sigqueue_alloc+0x190/0x2c0
[   53.808851][ T8892]  ? __sanitizer_cov_trace_switch+0x45/0x70
[   53.814736][ T8892]  __send_signal+0x675/0x8a0
[   53.819331][ T8892]  send_signal+0x211/0x2a0
[   53.823739][ T8892]  do_send_sig_info+0x59/0xc0
[   53.828420][ T8892]  do_send_specific+0xd8/0x100
[   53.833170][ T8892]  do_tkill+0xf8/0x130
[   53.837376][ T8892]  __x64_sys_tgkill+0x6d/0x90
[   53.842039][ T8892]  do_syscall_64+0xc7/0x3b0
[   53.846559][ T8892]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   53.852443][ T8892] RIP: 0033:0x468b26
[   53.856359][ T8892] Code: cc cc cc cc b8 27 00 00 00 0f 05 48 89 44 24 08 c3 cc cc cc 48 8b 7c 24 08 48 8b 74 24 10 48 8b 54 24 18 b8 ea 00 00 00 0f 05 <c3> cc cc cc cc cc cc cc cc cc 8b 7c 24 08 48 8b 74 24 10 48 8b 54
[   53.876079][ T8892] RSP: 002b:000000c00004beb0 EFLAGS: 00000246 ORIG_RAX: 00000000000000ea
[   53.886250][ T8892] RAX: ffffffffffffffda RBX: 000000c000000180 RCX: 0000000000468b26
[   53.894297][ T8892] RDX: 0000000000000017 RSI: 00000000000022c6 RDI: 00000000000022b7
[   53.902529][ T8892] RBP: 000000c00004bed0 R08: 0000000000000000 R09: 0000000000000000
[   53.910481][ T8892] R10: 000000c00004bec0 R11: 0000000000000246 R12: 00000000000000fb
[   53.919675][ T8892] R13: 0000000000e5b1c0 R14: 0000000000000000 R15: 0000000000000000
[   53.929283][ T8892] Kernel Offset: disabled
[   53.933822][ T8892] Rebooting in 86400 seconds..