[....] Starting enhanced syslogd: rsyslogd[ 12.910959] audit: type=1400 audit(1513066848.087:5): avc: denied { syslog } for pid=2994 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: [ 34.200563] audit: type=1400 audit(1513066869.377:6): avc: denied { map } for pid=3139 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-386-4,10.128.15.204' (ECDSA) to the list of known hosts. executing program [ 44.014321] audit: type=1400 audit(1513066879.191:7): avc: denied { map } for pid=3151 comm="syzkaller460916" path="/root/syzkaller460916535" 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 [ 44.017147] kasan: CONFIG_KASAN_INLINE enabled [ 44.017156] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 44.017163] general protection fault: 0000 [#1] SMP KASAN [ 44.017166] Dumping ftrace buffer: [ 44.017169] (ftrace buffer empty) [ 44.017171] Modules linked in: [ 44.017177] CPU: 0 PID: 3151 Comm: syzkaller460916 Not tainted 4.15.0-rc3+ #128 [ 44.017180] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 44.017189] RIP: 0010:string+0xb4/0x200 [ 44.017191] RSP: 0018:ffff8801c470f730 EFLAGS: 00010006 [ 44.017195] RAX: dffffc0000000000 RBX: fffffffffffffffe RCX: ffffffff8513b1ef [ 44.017197] RDX: 000dccad8dce4e8e RSI: 1ffff100388e1e01 RDI: ffff8801c470f750 [ 44.017199] RBP: ffff8801c470f780 R08: ffffed0038827dae R09: ffffed0038827dae [ 44.017201] R10: 0000000000000002 R11: ffffed0038827dad R12: 006e656c6e727474 [ 44.017204] R13: 006e656c6e727473 R14: ffffffffffffffff R15: ffff8801c413ed6a [ 44.017207] FS: 0000000000000000(0000) GS:ffff8801db400000(0063) knlGS:0000000008a89840 [ 44.017210] CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 [ 44.017212] CR2: 0000000020f99000 CR3: 00000001c4b5a000 CR4: 00000000001406f0 [ 44.017216] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 44.017218] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 44.017220] Call Trace: [ 44.017225] ? format_decode+0x10a/0x830 [ 44.017232] vsnprintf+0x863/0x1900 [ 44.017239] ? pointer+0x9e0/0x9e0 [ 44.017247] ? lock_release+0xda0/0xda0 [ 44.017256] seq_vprintf+0xe3/0x1a0 [ 44.017262] seq_printf+0xb3/0xe0 [ 44.017266] ? seq_vprintf+0x1a0/0x1a0 [ 44.017271] ? __lock_task_sighand+0x22f/0x6e0 [ 44.017277] ? zap_other_threads+0x240/0x240 [ 44.017282] ? kasan_kmalloc+0xad/0xe0 [ 44.017290] show_timer+0x1ee/0x2b0 [ 44.017293] ? timers_start+0x14c/0x1c0 [ 44.017299] seq_read+0x385/0x13d0 [ 44.017310] ? seq_lseek+0x3c0/0x3c0 [ 44.017314] ? __lock_is_held+0xbc/0x140 [ 44.017323] ? seq_lseek+0x3c0/0x3c0 [ 44.017326] __vfs_read+0xef/0xa00 [ 44.017332] ? fsnotify+0x7b3/0x1140 [ 44.017337] ? vfs_copy_file_range+0x960/0x960 [ 44.017343] ? fsnotify_first_mark+0x2b0/0x2b0 [ 44.017350] ? avc_policy_seqno+0x9/0x20 [ 44.017356] ? selinux_file_permission+0x82/0x460 [ 44.017362] ? security_file_permission+0x89/0x1f0 [ 44.017369] ? rw_verify_area+0xe5/0x2b0 [ 44.017373] ? __fdget_raw+0x20/0x20 [ 44.017377] vfs_read+0x124/0x360 [ 44.017383] SyS_read+0xef/0x220 [ 44.017388] ? kernel_write+0x120/0x120 [ 44.017395] ? do_fast_syscall_32+0x156/0xf9d [ 44.017400] ? kernel_write+0x120/0x120 [ 44.017405] do_fast_syscall_32+0x3ee/0xf9d [ 44.017412] ? do_int80_syscall_32+0x9d0/0x9d0 [ 44.017415] ? kasan_check_read+0x11/0x20 [ 44.017420] ? syscall_return_slowpath+0x550/0x550 [ 44.017425] ? SyS_rt_sigaction+0x94/0x1b0 [ 44.017433] ? sysret32_from_system_call+0x5/0x3b [ 44.017439] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 44.017447] entry_SYSENTER_compat+0x51/0x60 [ 44.017450] RIP: 0023:0xf7fb1c79 [ 44.017452] RSP: 002b:00000000ffed802c EFLAGS: 00000213 ORIG_RAX: 0000000000000003 [ 44.017455] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020874000 [ 44.017457] RDX: 0000000000000000 RSI: 00000000000005a0 RDI: 0000000000000000 [ 44.017459] RBP: 0000000000c10000 R08: 0000000000000000 R09: 0000000000000000 [ 44.017461] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 44.017463] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 [ 44.017472] 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 [ 44.017538] RIP: string+0xb4/0x200 RSP: ffff8801c470f730 [ 44.017544] ---[ end trace fc529c542f91f26f ]--- [ 44.017547] Kernel panic - not syncing: Fatal exception [ 44.040552] Dumping ftrace buffer: [ 44.040555] (ftrace buffer empty) [ 44.040557] Kernel Offset: disabled [ 44.414894] Rebooting in 86400 seconds..