[  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 '10.128.0.225' (ECDSA) to the list of known hosts.
2020/06/16 10:56:03 fuzzer started
2020/06/16 10:56:03 dialing manager at 10.128.0.105:37643
2020/06/16 10:56:03 syscalls: 3085
2020/06/16 10:56:03 code coverage: enabled
2020/06/16 10:56:03 comparison tracing: enabled
2020/06/16 10:56:03 extra coverage: enabled
2020/06/16 10:56:03 setuid sandbox: enabled
2020/06/16 10:56:03 namespace sandbox: enabled
2020/06/16 10:56:03 Android sandbox: /sys/fs/selinux/policy does not exist
2020/06/16 10:56:03 fault injection: enabled
2020/06/16 10:56:03 leak checking: CONFIG_DEBUG_KMEMLEAK is not enabled
2020/06/16 10:56:03 net packet injection: enabled
2020/06/16 10:56:03 net device setup: enabled
2020/06/16 10:56:03 concurrency sanitizer: enabled
2020/06/16 10:56:03 devlink PCI setup: PCI device 0000:00:10.0 is not available
2020/06/16 10:56:03 USB emulation: enabled
2020/06/16 10:56:04 suppressing KCSAN reports in functions: 'generic_file_read_iter' 'ep_poll' 'alloc_pid' 'copy_process' 'blk_mq_get_request' 
syzkaller login: [   52.978706][ T8920] ==================================================================
[   52.986904][ T8920] BUG: KCSAN: data-race in complete_signal / futex_wait_queue_me
[   52.994591][ T8920] 
[   52.996909][ T8920] write to 0xffff8881222c4064 of 4 bytes by task 8909 on cpu 0:
[   53.004526][ T8920]  futex_wait_queue_me+0x17d/0x290
[   53.009623][ T8920]  futex_wait+0x17e/0x3a0
[   53.013928][ T8920]  do_futex+0xe2/0x15b0
[   53.018073][ T8920]  __x64_sys_futex+0x2dc/0x410
[   53.022816][ T8920]  do_syscall_64+0xc7/0x3b0
[   53.027304][ T8920]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   53.033186][ T8920] 
[   53.035494][ T8920] read to 0xffff8881222c4064 of 4 bytes by task 8920 on cpu 1:
[   53.043032][ T8920]  complete_signal+0x85/0x5c0
[   53.048229][ T8920]  __send_signal+0x675/0x8a0
[   53.052797][ T8920]  send_signal+0x211/0x2a0
[   53.057188][ T8920]  do_send_sig_info+0x59/0xc0
[   53.062728][ T8920]  do_send_specific+0xd8/0x100
[   53.067464][ T8920]  do_tkill+0xf8/0x130
[   53.071511][ T8920]  __x64_sys_tgkill+0x6d/0x90
[   53.076262][ T8920]  do_syscall_64+0xc7/0x3b0
[   53.080741][ T8920]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   53.086635][ T8920] 
[   53.088937][ T8920] Reported by Kernel Concurrency Sanitizer on:
[   53.095081][ T8920] CPU: 1 PID: 8920 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0
[   53.103303][ T8920] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   53.114115][ T8920] ==================================================================
[   53.122149][ T8920] Kernel panic - not syncing: panic_on_warn set ...
[   53.128712][ T8920] CPU: 1 PID: 8920 Comm: syz-fuzzer Not tainted 5.7.0-rc1-syzkaller #0
[   53.137005][ T8920] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   53.147162][ T8920] Call Trace:
[   53.150430][ T8920]  dump_stack+0x11d/0x187
[   53.158884][ T8920]  panic+0x210/0x640
[   53.162775][ T8920]  ? vprintk_func+0x89/0x13a
[   53.167349][ T8920]  kcsan_report.cold+0xc/0x1a
[   53.172015][ T8920]  kcsan_setup_watchpoint+0x3fb/0x440
[   53.177375][ T8920]  complete_signal+0x85/0x5c0
[   53.182044][ T8920]  ? __sigqueue_alloc+0x190/0x2c0
[   53.187049][ T8920]  ? __sanitizer_cov_trace_switch+0x45/0x70
[   53.192945][ T8920]  __send_signal+0x675/0x8a0
[   53.197515][ T8920]  send_signal+0x211/0x2a0
[   53.201923][ T8920]  do_send_sig_info+0x59/0xc0
[   53.206592][ T8920]  do_send_specific+0xd8/0x100
[   53.211349][ T8920]  do_tkill+0xf8/0x130
[   53.215405][ T8920]  __x64_sys_tgkill+0x6d/0x90
[   53.220071][ T8920]  do_syscall_64+0xc7/0x3b0
[   53.226747][ T8920]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   53.232625][ T8920] RIP: 0033:0x468b26
[   53.236505][ T8920] 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
[   53.256122][ T8920] RSP: 002b:000000c0001c9ed8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ea
[   53.264943][ T8920] RAX: ffffffffffffffda RBX: 000000c000000180 RCX: 0000000000468b26
[   53.272890][ T8920] RDX: 0000000000000017 RSI: 00000000000022cd RDI: 00000000000022c9
[   53.280837][ T8920] RBP: 000000c0001c9ef8 R08: 00007ffdb2beb080 R09: 0000000000000034
[   53.288783][ T8920] R10: 000000c0001c9ec0 R11: 0000000000000246 R12: 0000000000000074
[   53.296732][ T8920] R13: 0000000000e5e300 R14: 0000000000000000 R15: 0000000000000000
[   53.306029][ T8920] Kernel Offset: disabled
[   53.310363][ T8920] Rebooting in 86400 seconds..