[....] Starting enhanced syslogd: rsyslogd[ 12.718357] audit: type=1400 audit(1513084244.499:5): avc: denied { syslog } for pid=2990 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 syzkaller login: [ 20.112251] audit: type=1400 audit(1513084251.892:6): avc: denied { map } for pid=3130 comm="bash" path="/bin/bash" dev="sda1" ino=1457 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=system_u:object_r:file_t:s0 tclass=file permissive=1 Warning: Permanently added 'ci-upstream-kasan-gce-1,10.128.0.4' (ECDSA) to the list of known hosts. executing program [ 30.927179] audit: type=1400 audit(1513084262.707:7): avc: denied { map } for pid=3146 comm="syzkaller813193" path="/root/syzkaller813193227" dev="sda1" ino=16481 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 [ 30.930508] kasan: CONFIG_KASAN_INLINE enabled [ 30.930521] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.930529] general protection fault: 0000 [#1] SMP KASAN [ 30.930534] Dumping ftrace buffer: [ 30.930538] (ftrace buffer empty) [ 30.930540] Modules linked in: [ 30.930548] CPU: 0 PID: 3146 Comm: syzkaller813193 Not tainted 4.15.0-rc3+ #218 [ 30.930551] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.930562] RIP: 0010:string+0xb4/0x200 [ 30.930565] RSP: 0018:ffff8801c44cf8c8 EFLAGS: 00010006 [ 30.930571] RAX: dffffc0000000000 RBX: fffffffffffffffe RCX: ffffffff8513b1ef [ 30.930575] RDX: 000dccad8dce4e8e RSI: 1ffff10038899f01 RDI: ffff8801c44cf8e8 [ 30.930578] RBP: ffff8801c44cf918 R08: ffffed00388dd4c6 R09: ffffed00388dd4c6 [ 30.930582] R10: 0000000000000002 R11: ffffed00388dd4c5 R12: 006e656c6e727474 [ 30.930586] R13: 006e656c6e727473 R14: ffffffffffffffff R15: ffff8801c46ea62a [ 30.930591] FS: 000000000214a880(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 30.930594] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.930598] CR2: 0000000000454f50 CR3: 00000001c587d000 CR4: 00000000001406f0 [ 30.930604] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 30.930607] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 30.930609] Call Trace: [ 30.930617] ? format_decode+0x10a/0x830 [ 30.930627] vsnprintf+0x863/0x1900 [ 30.930638] ? pointer+0x9e0/0x9e0 [ 30.930648] ? lock_release+0xda0/0xda0 [ 30.930661] seq_vprintf+0xe3/0x1a0 [ 30.930671] seq_printf+0xb3/0xe0 [ 30.930677] ? seq_vprintf+0x1a0/0x1a0 [ 30.930684] ? __lock_task_sighand+0x22f/0x6e0 [ 30.930693] ? zap_other_threads+0x240/0x240 [ 30.930699] ? kasan_kmalloc+0xad/0xe0 [ 30.930712] show_timer+0x1ee/0x2b0 [ 30.930717] ? timers_start+0x14c/0x1c0 [ 30.930725] seq_read+0x385/0x13d0 [ 30.930743] ? seq_lseek+0x3c0/0x3c0 [ 30.930749] ? __lock_is_held+0xbc/0x140 [ 30.930764] ? seq_lseek+0x3c0/0x3c0 [ 30.930770] __vfs_read+0xef/0xa00 [ 30.930776] ? fsnotify+0x7b3/0x1140 [ 30.930784] ? vfs_copy_file_range+0x960/0x960 [ 30.930794] ? fsnotify_first_mark+0x2b0/0x2b0 [ 30.930805] ? avc_policy_seqno+0x9/0x20 [ 30.930811] ? selinux_file_permission+0x82/0x460 [ 30.930821] ? security_file_permission+0x89/0x1f0 [ 30.930831] ? rw_verify_area+0xe5/0x2b0 [ 30.930836] ? __fdget_raw+0x20/0x20 [ 30.930844] vfs_read+0x124/0x360 [ 30.930853] SyS_read+0xef/0x220 [ 30.930862] ? kernel_write+0x120/0x120 [ 30.930867] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 30.930876] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 30.930887] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 30.930891] RIP: 0033:0x440139 [ 30.930895] RSP: 002b:00007ffda492eb98 EFLAGS: 00000213 ORIG_RAX: 0000000000000000 [ 30.930900] RAX: ffffffffffffffda RBX: 00007ffda492e940 RCX: 0000000000440139 [ 30.930904] RDX: 0000000000000000 RSI: 0000000020874000 RDI: 0000000000000003 [ 30.930908] RBP: 000000000000007f R08: 0000000000000011 R09: 65732f636f72702f [ 30.930911] R10: 0000000000000000 R11: 0000000000000213 R12: 00007ffda492eba0 [ 30.930915] R13: 00000000004a1597 R14: 00007ffda492eab8 R15: 0000000000000001 [ 30.930928] Code: 01 00 00 e8 2f 83 5c fc 4d 85 f6 0f 84 10 01 00 00 e8 21 83 5c fc 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 4d 8d 65 01 48 c1 ea 03 <0f> b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 ec 00 00 [ 30.931047] RIP: string+0xb4/0x200 RSP: ffff8801c44cf8c8 [ 30.931055] ---[ end trace 228c94274d296047 ]--- [ 30.931058] Kernel panic - not syncing: Fatal exception [ 30.953443] Dumping ftrace buffer: [ 30.953446] (ftrace buffer empty) [ 30.953448] Kernel Offset: disabled [ 31.297298] Rebooting in 86400 seconds..