[  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 '10.128.1.36' (ECDSA) to the list of known hosts.
2020/06/08 22:41:04 fuzzer started
2020/06/08 22:41:04 dialing manager at 10.128.0.105:32965
2020/06/08 22:41:04 syscalls: 3055
2020/06/08 22:41:04 code coverage: enabled
2020/06/08 22:41:04 comparison tracing: enabled
2020/06/08 22:41:04 extra coverage: enabled
2020/06/08 22:41:04 setuid sandbox: enabled
2020/06/08 22:41:04 namespace sandbox: enabled
2020/06/08 22:41:04 Android sandbox: /sys/fs/selinux/policy does not exist
2020/06/08 22:41:04 fault injection: enabled
2020/06/08 22:41:04 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/06/08 22:41:04 net packet injection: enabled
2020/06/08 22:41:04 net device setup: enabled
2020/06/08 22:41:04 concurrency sanitizer: enabled
2020/06/08 22:41:04 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/06/08 22:41:04 USB emulation: enabled
syzkaller login: [   47.594153][ T8906] ==================================================================
[   47.602270][ T8906] BUG: KCSAN: data-race in complete_signal / futex_wait_queue_me
[   47.609971][ T8906] 
[   47.612299][ T8906] write to 0xffff888126a260a4 of 4 bytes by task 8907 on cpu 1:
[   47.619915][ T8906]  futex_wait_queue_me+0x17d/0x290
[   47.625045][ T8906]  futex_wait+0x17e/0x3a0
[   47.629359][ T8906]  do_futex+0xe2/0x15b0
[   47.633501][ T8906]  __x64_sys_futex+0x2dc/0x410
[   47.638289][ T8906]  do_syscall_64+0xc7/0x3b0
[   47.642785][ T8906]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   47.648651][ T8906] 
[   47.650972][ T8906] read to 0xffff888126a260a4 of 4 bytes by task 8906 on cpu 0:
[   47.658525][ T8906]  complete_signal+0x85/0x5c0
[   47.663190][ T8906]  __send_signal+0x675/0x8a0
[   47.667761][ T8906]  send_signal+0x211/0x2a0
[   47.672176][ T8906]  do_send_sig_info+0x59/0xc0
[   47.676844][ T8906]  do_send_specific+0xd8/0x100
[   47.681598][ T8906]  do_tkill+0xf8/0x130
[   47.685659][ T8906]  __x64_sys_tgkill+0x6d/0x90
[   47.690325][ T8906]  do_syscall_64+0xc7/0x3b0
[   47.694816][ T8906]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   47.700701][ T8906] 
[   47.703026][ T8906] Reported by Kernel Concurrency Sanitizer on:
[   47.709163][ T8906] CPU: 0 PID: 8906 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0
[   47.717378][ T8906] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.727413][ T8906] ==================================================================
[   47.735456][ T8906] Kernel panic - not syncing: panic_on_warn set ...
[   47.742226][ T8906] CPU: 0 PID: 8906 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0
[   47.750451][ T8906] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   47.760500][ T8906] Call Trace:
[   47.763780][ T8906]  dump_stack+0x11d/0x187
[   47.768199][ T8906]  panic+0x210/0x640
[   47.772082][ T8906]  ? vprintk_func+0x89/0x13a
[   47.776664][ T8906]  kcsan_report.cold+0xc/0x1a
[   47.781335][ T8906]  kcsan_setup_watchpoint+0x3fb/0x440
[   47.786700][ T8906]  complete_signal+0x85/0x5c0
[   47.791361][ T8906]  ? __sigqueue_alloc+0x190/0x2c0
[   47.796379][ T8906]  ? __sanitizer_cov_trace_switch+0x45/0x70
[   47.802261][ T8906]  __send_signal+0x675/0x8a0
[   47.806858][ T8906]  send_signal+0x211/0x2a0
[   47.811265][ T8906]  do_send_sig_info+0x59/0xc0
[   47.815931][ T8906]  do_send_specific+0xd8/0x100
[   47.820684][ T8906]  do_tkill+0xf8/0x130
[   47.824747][ T8906]  __x64_sys_tgkill+0x6d/0x90
[   47.829427][ T8906]  do_syscall_64+0xc7/0x3b0
[   47.833919][ T8906]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   47.839793][ T8906] RIP: 0033:0x468b26
[   47.843679][ T8906] 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
[   47.863278][ T8906] RSP: 002b:000000c00004fed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ea
[   47.871672][ T8906] RAX: ffffffffffffffda RBX: 000000c000000180 RCX: 0000000000468b26
[   47.879630][ T8906] RDX: 0000000000000017 RSI: 00000000000022cb RDI: 00000000000022c7
[   47.887585][ T8906] RBP: 000000c00004fef8 R08: 00007ffc5cfd3080 R09: 000000000000002f
[   47.895558][ T8906] R10: 000000c00004fec0 R11: 0000000000000246 R12: 0000000000000055
[   47.903512][ T8906] R13: 0000000000000012 R14: 000080c005b8a000 R15: 000080c005b93fff
[   47.912778][ T8906] Kernel Offset: disabled
[   47.917092][ T8906] Rebooting in 86400 seconds..