[....] Starting enhanced syslogd: rsyslogd[ 12.873372] audit: type=1400 audit(1522138062.764:4): avc: denied { syslog } for pid=3652 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 '10.128.0.57' (ECDSA) to the list of known hosts. 2018/03/27 08:07:56 parsed 1 programs 2018/03/27 08:07:56 executed programs: 0 syzkaller login: [ 27.029410] IPVS: Creating netns size=2536 id=1 [ 27.046195] audit: type=1400 audit(1522138076.934:5): avc: denied { associate } for pid=3817 comm="syz-executor0" name="syz0" scontext=unconfined_u:object_r:unlabeled_t:s0 tcontext=system_u:object_r:unlabeled_t:s0 tclass=filesystem permissive=1 [ 27.443861] kasan: CONFIG_KASAN_INLINE enabled [ 27.448501] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 27.455836] general protection fault: 0000 [#1] PREEMPT SMP KASAN [ 27.462042] Dumping ftrace buffer: [ 27.465553] (ftrace buffer empty) [ 27.469238] Modules linked in: [ 27.472512] CPU: 0 PID: 3884 Comm: syz-executor0 Not tainted 4.9.90-gdd1e37e #6 [ 27.479923] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 27.489244] task: ffff8801d7ab9800 task.stack: ffff8801d7a40000 [ 27.495267] RIP: 0010:[] [] sg_remove_scat.isra.19+0x17b/0x2d0 [ 27.504558] RSP: 0018:ffff8801d7a47ac0 EFLAGS: 00010202 [ 27.509974] RAX: 1ffff1003625e86d RBX: ffff8801b12f4358 RCX: 0000000000000001 [ 27.517216] RDX: 0000000000000008 RSI: 0000000000000000 RDI: ffff8801cfe4cff4 [ 27.524454] RBP: ffff8801d7a47b10 R08: 0000000000000000 R09: ffffed0039679035 [ 27.531695] R10: 0000000000000005 R11: ffffed0039679034 R12: 0000000000000001 [ 27.538933] R13: 0000000000000008 R14: 0000000000000000 R15: dffffc0000000000 [ 27.546171] FS: 0000000000000000(0000) GS:ffff8801db200000(0063) knlGS:00000000f76e7b40 [ 27.554365] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 27.560219] CR2: 000000000813b029 CR3: 00000001da3dc000 CR4: 0000000000160670 [ 27.567467] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 27.574705] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 27.581941] Stack: [ 27.584060] ffff8801b12f4370 ffffed003625e86b ffffed003625e86e ffff8801b12f4368 [ 27.592028] ffff8801cfe4cfd8 ffff8801b12f4340 0000000000000000 0000000000000000 [ 27.599995] 0000000000000000 ffff8801b12f4438 ffff8801d7a47b50 ffffffff82669436 [ 27.607962] Call Trace: [ 27.610522] [] sg_finish_rem_req+0x2a6/0x320 [ 27.616548] [] sg_read+0xa22/0x1470 [ 27.621795] [] ? sg_proc_seq_show_debug+0xd90/0xd90 [ 27.628429] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 27.635409] [] ? debug_check_no_locks_freed+0x2c0/0x2c0 [ 27.642391] [] ? sg_proc_seq_show_debug+0xd90/0xd90 [ 27.649027] [] __vfs_read+0x103/0x670 [ 27.654444] [] ? default_llseek+0x290/0x290 [ 27.660383] [] ? fsnotify+0x86/0xf30 [ 27.665715] [] ? fsnotify+0xf30/0xf30 [ 27.671137] [] ? avc_policy_seqno+0x9/0x20 [ 27.676993] [] ? selinux_file_permission+0x82/0x460 [ 27.683629] [] ? security_file_permission+0x89/0x1e0 [ 27.690350] [] ? rw_verify_area+0xe5/0x2b0 [ 27.696200] [] vfs_read+0x11e/0x380 [ 27.701446] [] SyS_read+0xd9/0x1b0 [ 27.706603] [] ? vfs_copy_file_range+0x740/0x740 [ 27.712983] [] ? do_fast_syscall_32+0xcf/0x870 [ 27.719188] [] ? vfs_copy_file_range+0x740/0x740 [ 27.725564] [] do_fast_syscall_32+0x2f5/0x870 [ 27.731677] [] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 27.738312] [] entry_SYSENTER_compat+0x90/0xa2 [ 27.744506] Code: 45 b8 eb 3e e8 e7 14 d0 fe 48 8b 45 c8 48 c1 e8 03 42 80 3c 38 00 0f 85 3a 01 00 00 4c 8b 73 10 4b 8d 14 2e 48 89 d1 48 c1 e9 03 <42> 80 3c 39 00 0f 85 0b 01 00 00 48 8b 12 49 83 c5 08 48 85 d2 [ 27.771026] RIP [] sg_remove_scat.isra.19+0x17b/0x2d0 [ 27.777952] RSP [ 27.781835] ---[ end trace 8f293e351259307e ]--- [ 27.786574] Kernel panic - not syncing: Fatal exception [ 27.792344] Dumping ftrace buffer: [ 27.795854] (ftrace buffer empty) [ 27.799531] Kernel Offset: disabled [ 27.803123] Rebooting in 86400 seconds..