[....] Starting enhanced syslogd: rsyslogd[ 12.077200] audit: type=1400 audit(1513254530.946:5): avc: denied { syslog } for pid=2991 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: [ 19.006908] audit: type=1400 audit(1513254537.875:6): 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-mmots-kasan-gce-9,10.128.15.192' (ECDSA) to the list of known hosts. executing program [ 39.255879] audit: type=1400 audit(1513254558.124:7): avc: denied { map } for pid=3147 comm="syzkaller281896" path="/root/syzkaller281896789" 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 [ 39.259382] kasan: CONFIG_KASAN_INLINE enabled [ 39.259391] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 39.259398] general protection fault: 0000 [#1] SMP KASAN [ 39.259403] Dumping ftrace buffer: [ 39.259406] (ftrace buffer empty) [ 39.259408] Modules linked in: [ 39.259415] CPU: 1 PID: 3147 Comm: syzkaller281896 Not tainted 4.15.0-rc2-mm1+ #39 [ 39.259418] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 39.259429] RIP: 0010:string+0xb4/0x200 [ 39.259432] RSP: 0018:ffff8801bd6a78c8 EFLAGS: 00010006 [ 39.259436] RAX: dffffc0000000000 RBX: fffffffffffffffe RCX: ffffffff8515819f [ 39.259438] RDX: 000dccad8dce4e8e RSI: 1ffff10037ad4f01 RDI: ffff8801bd6a78e8 [ 39.259440] RBP: ffff8801bd6a7918 R08: ffffed00389bfdc6 R09: ffffed00389bfdc6 [ 39.259443] R10: 0000000000000002 R11: ffffed00389bfdc5 R12: 006e656c6e727474 [ 39.259445] R13: 006e656c6e727473 R14: ffffffffffffffff R15: ffff8801c4dfee2a [ 39.259449] FS: 0000000000b6e880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 39.259451] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 39.259454] CR2: 0000000000454f50 CR3: 00000001c50dc000 CR4: 00000000001406e0 [ 39.259459] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 39.259461] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 39.259462] Call Trace: [ 39.259468] ? format_decode+0x10a/0x830 [ 39.259475] vsnprintf+0x863/0x1900 [ 39.259483] ? pointer+0x9e0/0x9e0 [ 39.259491] ? lock_release+0xda0/0xda0 [ 39.259501] seq_vprintf+0xe3/0x1a0 [ 39.259508] seq_printf+0xb3/0xe0 [ 39.259512] ? seq_vprintf+0x1a0/0x1a0 [ 39.259517] ? __lock_task_sighand+0x22f/0x6e0 [ 39.259523] ? zap_other_threads+0x240/0x240 [ 39.259534] ? kasan_kmalloc+0xad/0xe0 [ 39.259544] show_timer+0x1ee/0x2b0 [ 39.259547] ? timers_start+0x14c/0x1c0 [ 39.259554] seq_read+0x385/0x13d0 [ 39.259565] ? seq_lseek+0x3c0/0x3c0 [ 39.259569] ? __lock_is_held+0xbc/0x140 [ 39.259579] ? seq_lseek+0x3c0/0x3c0 [ 39.259584] __vfs_read+0xef/0xa00 [ 39.259590] ? fsnotify+0x7b3/0x1140 [ 39.259596] ? vfs_copy_file_range+0x960/0x960 [ 39.259602] ? fsnotify_first_mark+0x2b0/0x2b0 [ 39.259611] ? avc_policy_seqno+0x9/0x20 [ 39.259617] ? selinux_file_permission+0x82/0x460 [ 39.259623] ? security_file_permission+0x89/0x1f0 [ 39.259628] ? rw_verify_area+0xe5/0x2b0 [ 39.259634] ? __fdget_raw+0x20/0x20 [ 39.259639] vfs_read+0x124/0x360 [ 39.259646] SyS_read+0xef/0x220 [ 39.259651] ? kernel_write+0x120/0x120 [ 39.259655] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 39.259663] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 39.259675] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 39.259679] RIP: 0033:0x440139 [ 39.259681] RSP: 002b:00007fffb5f9da28 EFLAGS: 00000213 ORIG_RAX: 0000000000000000 [ 39.259685] RAX: ffffffffffffffda RBX: 00007fffb5f9d7d0 RCX: 0000000000440139 [ 39.259687] RDX: 0000000000000000 RSI: 0000000020874000 RDI: 0000000000000003 [ 39.259690] RBP: 000000000000007f R08: 0000000000000011 R09: 65732f636f72702f [ 39.259692] R10: 0000000000000000 R11: 0000000000000213 R12: 00007fffb5f9da30 [ 39.259694] R13: 00000000004a1597 R14: 00007fffb5f9d948 R15: 0000000000000001 [ 39.259703] Code: 01 00 00 e8 0f b4 5a fc 4d 85 f6 0f 84 10 01 00 00 e8 01 b4 5a 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 [ 39.259771] RIP: string+0xb4/0x200 RSP: ffff8801bd6a78c8 [ 39.259779] ---[ end trace 8333e8041c48a032 ]--- [ 39.259782] Kernel panic - not syncing: Fatal exception [ 39.281810] Dumping ftrace buffer: [ 39.281815] (ftrace buffer empty) [ 39.281817] Kernel Offset: disabled [ 39.626435] Rebooting in 86400 seconds..