[....] Starting enhanced syslogd: rsyslogd[ 10.701279] audit: type=1400 audit(1513779425.796:5): avc: denied { syslog } for pid=2995 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: [ 15.208368] audit: type=1400 audit(1513779430.303:6): avc: denied { map } for pid=3134 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-3,10.128.15.218' (ECDSA) to the list of known hosts. executing program executing program executing program executing program executing program executing program executing program executing program [ 21.359605] audit: type=1400 audit(1513779436.454:7): avc: denied { map } for pid=3148 comm="syzkaller251643" path="/root/syzkaller251643453" 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 executing program executing program executing program executing program [ 21.412967] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 24.377682] kasan: CONFIG_KASAN_INLINE enabled [ 24.382388] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 24.389836] general protection fault: 0000 [#1] SMP KASAN [ 24.395356] Dumping ftrace buffer: [ 24.398864] (ftrace buffer empty) [ 24.402542] Modules linked in: [ 24.405703] CPU: 1 PID: 5706 Comm: syzkaller251643 Not tainted 4.15.0-rc4-next-20171220+ #77 [ 24.414244] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.423587] RIP: 0010:finish_task_switch+0x42d/0x740 [ 24.428656] RSP: 0018:ffff8801d2be7a00 EFLAGS: 00010a06 [ 24.434001] RAX: dffffc0000000000 RBX: ffff8801db32c900 RCX: 1bd5a00000000022 [ 24.441253] RDX: 0000000000000000 RSI: 1ffff1003a57cef0 RDI: dead000000000110 [ 24.448492] RBP: ffff8801d2be7ab0 R08: 1ffff1003a3cabeb R09: 0000000000000000 [ 24.457136] R10: ffff8801d2be79d8 R11: 0000000000000000 R12: ffff8801d1d480c0 [ 24.464373] R13: 1ffff1003a57cf45 R14: dffffc0000000000 R15: dead000000000100 [ 24.471612] FS: 00007fc31dbcd700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 24.479807] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.485656] CR2: 00007fc3bcd24db8 CR3: 00000001d9a86004 CR4: 00000000001626e0 [ 24.492898] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 24.500137] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 24.507375] Call Trace: [ 24.509938] ? copy_overflow+0x20/0x20 [ 24.513801] __schedule+0x8f3/0x2060 [ 24.517487] ? __sched_text_start+0x8/0x8 [ 24.521606] ? blk_init_request_from_bio+0x440/0x440 [ 24.526680] ? _raw_spin_unlock_irqrestore+0x31/0xba [ 24.532031] ? wake_up_q+0x8a/0xe0 [ 24.536327] ? rwsem_wake+0x313/0x520 [ 24.541316] ? __rwsem_mark_wake.constprop.5+0xe0/0xe0 [ 24.546571] ? SyS_madvise+0x9f4/0x13d0 [ 24.550518] schedule+0xf5/0x430 [ 24.553857] ? __schedule+0x2060/0x2060 [ 24.557801] ? vmacache_find+0x5f/0x280 [ 24.561742] ? vmacache_update+0xfe/0x130 [ 24.565861] ? call_rwsem_wake+0x1b/0x30 [ 24.569895] ? exit_to_usermode_loop+0x8c/0x2f0 [ 24.574534] exit_to_usermode_loop+0x1d1/0x2f0 [ 24.579085] ? trace_event_raw_event_sys_exit+0x260/0x260 [ 24.584595] ? madvise_free_pte_range+0x1ea0/0x1ea0 [ 24.589577] ? __close_fd+0x222/0x360 [ 24.593348] syscall_return_slowpath+0x490/0x550 [ 24.598070] ? prepare_exit_to_usermode+0x340/0x340 [ 24.603058] ? entry_SYSCALL_64_fastpath+0x69/0x96 [ 24.607966] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.612951] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.617677] entry_SYSCALL_64_fastpath+0x94/0x96 [ 24.622407] RIP: 0033:0x4498e7 [ 24.625564] RSP: 002b:00007fc31dbccd18 EFLAGS: 00000206 ORIG_RAX: 000000000000001c [ 24.633241] RAX: 0000000000000000 RBX: 00007fc31dbcd700 RCX: 00000000004498e7 [ 24.640479] RDX: 0000000000000004 RSI: 00000000007fb000 RDI: 00007fc31d3cd000 [ 24.647727] RBP: 0000000000000000 R08: 230f000000000000 R09: a0000c35f8210fc8 [ 24.654973] R10: 4966350ff8230f00 R11: 0000000000000206 R12: 0000000000000000 [ 24.662218] R13: 00007ffec4f49d9f R14: 00007fc31dbcd9c0 R15: 0000000000000000 executing program executing program executing program [ 24.669465] Code: ff 11 4c 89 f9 48 c1 e9 03 42 80 3c 31 00 0f 85 1b 02 00 00 4d 8b 3f 4d 85 ff 0f 84 c0 fd ff ff 49 8d 7f 10 48 89 f9 48 c1 e9 03 <42> 80 3c 31 00 74 ae e8 a7 cc 5b 00 eb a7 4c 89 fe 4c 89 e7 e8 [ 24.688556] RIP: finish_task_switch+0x42d/0x740 RSP: ffff8801d2be7a00 [ 24.695179] ---[ end trace a2871d4b844a9258 ]--- [ 24.699940] Kernel panic - not syncing: Fatal exception [ 24.706096] Dumping ftrace buffer: [ 24.709615] (ftrace buffer empty) [ 24.713292] Kernel Offset: disabled [ 24.716886] Rebooting in 86400 seconds..