[....] Starting enhanced syslogd: rsyslogd[ 10.528009] audit: type=1400 audit(1515024619.164:5): avc: denied { syslog } for pid=3315 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 mcstransd: [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] 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: [ 16.058662] audit: type=1400 audit(1515024624.695:6): avc: denied { map } for pid=3454 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 '10.128.0.41' (ECDSA) to the list of known hosts. executing program [ 22.226999] audit: type=1400 audit(1515024630.863:7): avc: denied { map } for pid=3468 comm="syzkaller277222" path="/root/syzkaller277222570" 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 [ 22.272742] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 22.321409] kasan: CONFIG_KASAN_INLINE enabled [ 22.326007] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 22.333356] general protection fault: 0000 [#1] SMP KASAN [ 22.338858] Dumping ftrace buffer: [ 22.342361] (ftrace buffer empty) [ 22.346039] Modules linked in: [ 22.349197] CPU: 1 PID: 1775 Comm: udevd Not tainted 4.15.0-rc6-mm1+ #50 [ 22.355996] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 22.365327] RIP: 0010:native_write_cr4+0x4/0x10 [ 22.369964] RSP: 0018:ffff8801db507ed0 EFLAGS: 00010006 [ 22.375290] RAX: ffff8801cfdc0180 RBX: 00000000001606e0 RCX: ffffffff8115d7c2 [ 22.382526] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606e0 [ 22.389762] RBP: ffff8801db507ed0 R08: 0000000000000007 R09: 0000000000000000 [ 22.396998] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000006 [ 22.404234] R13: ffff8801cfdc0180 R14: ffff8801db51a130 R15: ffff8801db51a130 [ 22.411470] FS: 00007f508a69c7a0(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 22.419660] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.425503] CR2: 00007f508a6a3000 CR3: 00000001cfc25004 CR4: 00000000001626e0 [ 22.432751] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.439997] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.447239] Call Trace: [ 22.449789] [ 22.451912] hardware_disable+0x34a/0x4b0 [ 22.456028] ? kvm_io_bus_get_dev+0x1b0/0x1b0 [ 22.460491] kvm_arch_hardware_disable+0x35/0xd0 [ 22.465212] hardware_disable_nolock+0x30/0x40 [ 22.469761] flush_smp_call_function_queue+0x165/0x420 [ 22.475004] ? putname+0xee/0x130 [ 22.478421] generic_smp_call_function_single_interrupt+0x13/0x30 [ 22.484618] smp_call_function_single_interrupt+0x83/0x450 [ 22.490205] call_function_single_interrupt+0xa9/0xb0 [ 22.495358] [ 22.497561] RIP: 0010:kmem_cache_free+0x175/0x2b0 [ 22.502366] RSP: 0018:ffff8801cfdcfc88 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff04 [ 22.510038] RAX: 0000000000000007 RBX: ffff8801c0052400 RCX: 0000000000000000 [ 22.517275] RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000282 [ 22.524511] RBP: ffff8801cfdcfca8 R08: 0000000000000007 R09: 0000000000000000 [ 22.531746] R10: 0000000000000000 R11: 0000000000000000 R12: ffff8801db22a600 [ 22.538981] R13: 0000000000000282 R14: ffffffff8193c05e R15: ffff8801c0052400 [ 22.546218] ? putname+0xee/0x130 [ 22.549644] putname+0xee/0x130 [ 22.552889] SyS_rename+0x203/0x7f0 [ 22.556482] ? check_noncircular+0x20/0x20 [ 22.560686] ? SyS_renameat+0x7b0/0x7b0 [ 22.564625] ? __lock_is_held+0xb6/0x140 [ 22.568652] ? lock_downgrade+0x860/0x860 [ 22.572772] ? __sb_end_write+0xa0/0xd0 [ 22.576713] ? vfs_write+0x224/0x510 [ 22.580396] ? entry_SYSCALL_64_fastpath+0x5/0x9a [ 22.585204] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 22.590186] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 22.594909] entry_SYSCALL_64_fastpath+0x23/0x9a [ 22.599630] RIP: 0033:0x7f5089d29527 [ 22.603308] RSP: 002b:00007ffe2643df18 EFLAGS: 00000206 ORIG_RAX: 0000000000000052 [ 22.610979] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007f5089d29527 [ 22.618213] RDX: 0000000000000000 RSI: 00007ffe2643e360 RDI: 00007ffe2643df60 [ 22.625449] RBP: 00000000022f0d00 R08: 00000000004207f1 R09: 00007f5089df9e00 [ 22.632683] R10: 0000000000000022 R11: 0000000000000206 R12: 00007ffe2643df59 [ 22.639919] R13: 0000000000000008 R14: 0000000000000008 R15: 00007ffe2643df58 [ 22.647161] Code: 0f 1f 80 00 00 00 00 55 48 89 e5 0f 20 d8 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 0f 22 df 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 <0f> 22 e7 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 44 0f 20 c0 5d [ 22.666232] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801db507ed0 [ 22.672349] ---[ end trace 7285eb8afe6e159a ]--- [ 22.677067] Kernel panic - not syncing: Fatal exception in interrupt [ 22.683552] Dumping ftrace buffer: [ 22.687057] (ftrace buffer empty) [ 22.690733] Kernel Offset: disabled [ 22.694338] Rebooting in 86400 seconds..