[info] Using makefile-style concurrent boot in runlevel 2.
[   44.568530][   T26] audit: type=1800 audit(1573829843.579:21): pid=7427 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2452 res=0
[   44.599569][   T26] audit: type=1800 audit(1573829843.579:22): pid=7427 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2480 res=0
[....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c.

Debian GNU/Linux 7 syzkaller ttyS0

Warning: Permanently added '10.128.10.32' (ECDSA) to the list of known hosts.
2019/11/15 14:57:34 fuzzer started
2019/11/15 14:57:36 dialing manager at 10.128.0.105:44219
2019/11/15 14:57:36 syscalls: 2566
2019/11/15 14:57:36 code coverage: enabled
2019/11/15 14:57:36 comparison tracing: enabled
2019/11/15 14:57:36 extra coverage: extra coverage is not supported by the kernel
2019/11/15 14:57:36 setuid sandbox: enabled
syzkaller login: [   57.070954][ T7579] ==================================================================
[   57.082593][ T7579] BUG: KCSAN: data-race in pipe_poll / pipe_write
[   57.089028][ T7579] 
[   57.091364][ T7579] read to 0xffff888123ac3878 of 4 bytes by task 7571 on cpu 0:
[   57.098905][ T7579]  pipe_poll+0x84/0x1d0
[   57.103152][ T7579]  do_select+0x7d0/0x1020
[   57.107558][ T7579]  core_sys_select+0x381/0x550
[   57.112390][ T7579]  kern_select+0x106/0x170
[   57.116789][ T7579]  __x64_sys_select+0x70/0x90
[   57.121448][ T7579]  do_syscall_64+0xcc/0x370
[   57.125935][ T7579]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   57.131812][ T7579] 
[   57.134124][ T7579] write to 0xffff888123ac3878 of 4 bytes by task 7579 on cpu 1:
[   57.141736][ T7579]  pipe_write+0x268/0x970
[   57.146047][ T7579]  new_sync_write+0x388/0x4a0
[   57.150700][ T7579]  __vfs_write+0xb1/0xc0
[   57.154921][ T7579]  vfs_write+0x18a/0x390
[   57.159142][ T7579]  ksys_write+0xd5/0x1b0
[   57.163363][ T7579]  __x64_sys_write+0x4c/0x60
[   57.167948][ T7579]  do_syscall_64+0xcc/0x370
[   57.172468][ T7579]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   57.178348][ T7579] 
[   57.180657][ T7579] Reported by Kernel Concurrency Sanitizer on:
[   57.186965][ T7579] CPU: 1 PID: 7579 Comm: syz-fuzzer Not tainted 5.4.0-rc7+ #0
[   57.194699][ T7579] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   57.204752][ T7579] ==================================================================
[   57.212798][ T7579] Kernel panic - not syncing: panic_on_warn set ...
[   57.219369][ T7579] CPU: 1 PID: 7579 Comm: syz-fuzzer Not tainted 5.4.0-rc7+ #0
[   57.227670][ T7579] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   57.237726][ T7579] Call Trace:
[   57.241006][ T7579]  dump_stack+0x11d/0x181
[   57.245336][ T7579]  panic+0x210/0x640
[   57.249224][ T7579]  ? vprintk_func+0x8d/0x140
[   57.253800][ T7579]  kcsan_report.cold+0xc/0xd
[   57.258377][ T7579]  kcsan_setup_watchpoint+0x3fe/0x460
[   57.263910][ T7579]  __tsan_unaligned_write4+0xc4/0x100
[   57.269277][ T7579]  pipe_write+0x268/0x970
[   57.273593][ T7579]  new_sync_write+0x388/0x4a0
[   57.278261][ T7579]  __vfs_write+0xb1/0xc0
[   57.282487][ T7579]  vfs_write+0x18a/0x390
[   57.286728][ T7579]  ksys_write+0xd5/0x1b0
[   57.290955][ T7579]  __x64_sys_write+0x4c/0x60
[   57.295534][ T7579]  do_syscall_64+0xcc/0x370
[   57.300034][ T7579]  entry_SYSCALL_64_after_hwframe+0x44/0xa9
[   57.305910][ T7579] RIP: 0033:0x47c530
[   57.309790][ T7579] 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
[   57.329992][ T7579] RSP: 002b:000000c420397938 EFLAGS: 00000216 ORIG_RAX: 0000000000000001
[   57.338432][ T7579] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 000000000047c530
[   57.347342][ T7579] RDX: 000000000000002f RSI: 000000c420080000 RDI: 0000000000000002
[   57.355333][ T7579] RBP: 000000c420397990 R08: 0000000000000000 R09: 0000000000000000
[   57.363370][ T7579] R10: 0000000000000000 R11: 0000000000000216 R12: ffffffffffffffff
[   57.371344][ T7579] R13: 000000000000001e R14: 000000000000001d R15: 0000000000000100
[   57.380898][ T7579] Kernel Offset: disabled
[   57.385258][ T7579] Rebooting in 86400 seconds..