[....] Starting enhanced syslogd: rsyslogd[ 11.110098] audit: type=1400 audit(1514485854.539:4): avc: denied { syslog } for pid=3171 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. Starting mcstransd: [....] Starting file context maintaining daemon: restorecond[?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 '10.128.0.58' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program syzkaller login: [ 29.719279] kasan: CONFIG_KASAN_INLINE enabled [ 29.719991] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 29.721003] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 29.721824] Dumping ftrace buffer: [ 29.722297] (ftrace buffer empty) [ 29.722803] Modules linked in: [ 29.723275] CPU: 1 PID: 3330 Comm: syzkaller054145 Not tainted 4.9.72-gcb7518e #10 [ 29.724283] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 29.725513] task: ffff8801ca09c800 task.stack: ffff8801c8a98000 [ 29.726440] RIP: 0010:[] [] __list_del_entry+0x86/0x1d0 [ 29.727605] RSP: 0018:ffff8801c8a9fa48 EFLAGS: 00010046 [ 29.728323] RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffff8801c8bcc358 [ 29.729274] RDX: 0000000000000000 RSI: 00000000683038db RDI: ffff8801c8bcc360 [ 29.730262] RBP: ffff8801c8a9fa60 R08: 0000000000000001 R09: 0000000000000001 [ 29.731217] R10: 0000000000000003 R11: ffff8801ca09c800 R12: 0000000000000000 [ 29.732167] R13: 0000000000000000 R14: 0000000000000286 R15: ffff8801c8bcc200 [ 29.733153] FS: 0000000000000000(0000) GS:ffff8801db300000(0063) knlGS:00000000f7749b40 [ 29.734227] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 29.735039] CR2: 0000000020962f5c CR3: 00000001ca0a8000 CR4: 00000000001406e0 [ 29.736020] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 29.736981] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 29.737942] Stack: [ 29.738239] ffff8801c8bcc390 ffff8801c8bcc358 ffff8801c8bcc358 ffff8801c8a9fa78 [ 29.739365] ffffffff81df969d ffff8801c8bcc260 ffff8801c8a9faa8 ffffffff82664d83 [ 29.747252] ffff8801c8bcc358 0000000020007000 1ffff10039153f5f ffff8801c8bcc390 [ 29.755195] Call Trace: [ 29.757751] [] list_del+0xd/0x70 [ 29.762734] [] sg_remove_request+0xa3/0x120 [ 29.768669] [] sg_new_write.isra.26+0x849/0x940 [ 29.774951] [] ? sg_common_write.isra.23+0x18d0/0x18d0 [ 29.781847] [] ? __might_sleep+0x95/0x1a0 [ 29.787611] [] ? scsi_block_when_processing_errors+0x120/0x2f0 [ 29.795196] [] ? scsi_schedule_eh+0x190/0x190 [ 29.801321] [] sg_ioctl+0x1da0/0x2c30 [ 29.806738] [] ? sg_new_write.isra.26+0x940/0x940 [ 29.813196] [] ? selinux_capable+0x40/0x40 [ 29.819047] [] ? selinux_capable+0x40/0x40 [ 29.824896] [] ? sg_new_write.isra.26+0x940/0x940 [ 29.831356] [] vfs_ioctl+0x6f/0xb0 [ 29.836521] [] do_ioctl+0x40/0x60 [ 29.841592] [] compat_SyS_ioctl+0x483/0x2050 [ 29.847614] [] ? do_ioctl+0x60/0x60 [ 29.852857] [] do_fast_syscall_32+0x2f7/0x890 [ 29.858967] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 29.865600] [] entry_SYSENTER_compat+0x51/0x60 [ 29.871793] Code: c4 0f 84 94 00 00 00 48 b8 00 02 00 00 00 00 ad de 48 39 c3 0f 84 a5 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 <80> 3c 02 00 0f 85 e8 00 00 00 4c 8b 03 49 39 c8 0f 85 9b 00 00 [ 29.898147] RIP [] __list_del_entry+0x86/0x1d0 [ 29.904460] RSP [ 29.908057] ---[ end trace e980715386d10b79 ]--- [ 29.912774] Kernel panic - not syncing: Fatal exception [ 29.918470] Dumping ftrace buffer: [ 29.921974] (ftrace buffer empty) [ 29.925648] Kernel Offset: disabled [ 29.929240] Rebooting in 86400 seconds..