[....] Starting enhanced syslogd: rsyslogd[ 13.223072] audit: type=1400 audit(1513076964.764:5): avc: denied { syslog } for pid=3002 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: [ 36.318176] audit: type=1400 audit(1513076987.859:6): avc: denied { map } for pid=3147 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-next-kasan-gce-3,10.128.0.47' (ECDSA) to the list of known hosts. executing program [ 42.463581] audit: type=1400 audit(1513076994.005:7): avc: denied { map } for pid=3159 comm="syzkaller742631" path="/root/syzkaller742631840" 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 [ 42.466328] kasan: CONFIG_KASAN_INLINE enabled [ 42.466337] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 42.466343] general protection fault: 0000 [#1] SMP KASAN [ 42.466346] Dumping ftrace buffer: [ 42.466349] (ftrace buffer empty) [ 42.466350] Modules linked in: [ 42.466356] CPU: 0 PID: 3159 Comm: syzkaller742631 Not tainted 4.15.0-rc3-next-20171212+ #65 [ 42.466358] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.466368] RIP: 0010:string+0xb4/0x200 [ 42.466370] RSP: 0018:ffff8801c48ff8c8 EFLAGS: 00010006 [ 42.466374] RAX: dffffc0000000000 RBX: fffffffffffffffe RCX: ffffffff8516bc2f [ 42.466376] RDX: 000dccad8dce4e8e RSI: 1ffff1003891ff01 RDI: ffff8801c48ff8e8 [ 42.466379] RBP: ffff8801c48ff918 R08: ffffed00389e8c96 R09: ffffed00389e8c96 [ 42.466381] R10: 0000000000000002 R11: ffffed00389e8c95 R12: 006e656c6e727474 [ 42.466384] R13: 006e656c6e727473 R14: ffffffffffffffff R15: ffff8801c4f464aa [ 42.466387] FS: 00000000010c0880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 42.466389] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 42.466391] CR2: 0000000000454f50 CR3: 00000001c4ecb000 CR4: 00000000001406f0 [ 42.466396] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 42.466398] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 42.466399] Call Trace: [ 42.466404] ? format_decode+0x10a/0x830 [ 42.466412] vsnprintf+0x863/0x1900 [ 42.466419] ? pointer+0x9e0/0x9e0 [ 42.466427] ? lock_release+0xda0/0xda0 [ 42.466436] seq_vprintf+0xe3/0x1a0 [ 42.466442] seq_printf+0xb3/0xe0 [ 42.466446] ? seq_vprintf+0x1a0/0x1a0 [ 42.466451] ? __lock_task_sighand+0x22f/0x6e0 [ 42.466456] ? zap_other_threads+0x240/0x240 [ 42.466461] ? kasan_kmalloc+0xad/0xe0 [ 42.466470] show_timer+0x1ee/0x2b0 [ 42.466473] ? timers_start+0x14c/0x1c0 [ 42.466479] seq_read+0x385/0x13d0 [ 42.466490] ? seq_lseek+0x3c0/0x3c0 [ 42.466494] ? __lock_is_held+0xbc/0x140 [ 42.466504] ? seq_lseek+0x3c0/0x3c0 [ 42.466508] __vfs_read+0xef/0xa00 [ 42.466512] ? fsnotify+0x7b3/0x1140 [ 42.466518] ? vfs_copy_file_range+0x960/0x960 [ 42.466524] ? fsnotify_first_mark+0x2b0/0x2b0 [ 42.466532] ? avc_policy_seqno+0x9/0x20 [ 42.466537] ? selinux_file_permission+0x82/0x460 [ 42.466543] ? security_file_permission+0x89/0x1f0 [ 42.466548] ? rw_verify_area+0xe5/0x2b0 [ 42.466552] ? __fdget_raw+0x20/0x20 [ 42.466557] vfs_read+0x124/0x360 [ 42.466563] SyS_read+0xef/0x220 [ 42.466568] ? kernel_write+0x120/0x120 [ 42.466572] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 42.466579] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 42.466588] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 42.466591] RIP: 0033:0x440139 [ 42.466593] RSP: 002b:00007ffe0b5ffc68 EFLAGS: 00000213 ORIG_RAX: 0000000000000000 [ 42.466597] RAX: ffffffffffffffda RBX: 00007ffe0b5ffa10 RCX: 0000000000440139 [ 42.466599] RDX: 0000000000000000 RSI: 0000000020874000 RDI: 0000000000000003 [ 42.466601] RBP: 000000000000007f R08: 0000000000000011 R09: 65732f636f72702f [ 42.466603] R10: 0000000000000000 R11: 0000000000000213 R12: 00007ffe0b5ffc70 [ 42.466605] R13: 00000000004a1597 R14: 00007ffe0b5ffb88 R15: 0000000000000001 [ 42.466614] Code: 01 00 00 e8 2f 64 59 fc 4d 85 f6 0f 84 10 01 00 00 e8 21 64 59 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 [ 42.466680] RIP: string+0xb4/0x200 RSP: ffff8801c48ff8c8 [ 42.466686] ---[ end trace 8d569e97bb27d536 ]--- [ 42.466689] Kernel panic - not syncing: Fatal exception [ 42.489458] Dumping ftrace buffer: [ 42.489462] (ftrace buffer empty) [ 42.489464] Kernel Offset: disabled [ 42.834505] Rebooting in 86400 seconds..