[....] Starting enhanced syslogd: rsyslogd[ 9.951618] audit: type=1400 audit(1515116716.194:5): avc: denied { syslog } for pid=3310 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: [ 12.313246] audit: type=1400 audit(1515116718.556:6): avc: denied { map } for pid=3445 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 '10.128.15.242' (ECDSA) to the list of known hosts. executing program [ 38.137748] audit: type=1400 audit(1515116744.380:7): avc: denied { map } for pid=3464 comm="syzkaller036188" path="/root/syzkaller036188294" 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 [ 38.174140] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 38.220312] kasan: CONFIG_KASAN_INLINE enabled [ 38.224930] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 38.232264] general protection fault: 0000 [#1] SMP KASAN [ 38.237869] Dumping ftrace buffer: [ 38.241375] (ftrace buffer empty) [ 38.245054] Modules linked in: [ 38.248219] CPU: 1 PID: 1773 Comm: udevd Not tainted 4.15.0-rc6-mm1+ #50 [ 38.255025] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 38.264362] RIP: 0010:native_write_cr4+0x4/0x10 [ 38.268996] RSP: 0018:ffff8801db507ed0 EFLAGS: 00010006 [ 38.274325] RAX: ffff8801cfdb2100 RBX: 00000000001606e0 RCX: ffffffff8115d7c2 [ 38.281566] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606e0 [ 38.288804] RBP: ffff8801db507ed0 R08: 0000000000000007 R09: ffff8801cfdbf9b0 [ 38.296044] R10: 00000000e4d36624 R11: 000000003d4320f9 R12: 0000000000000006 [ 38.303283] R13: ffff8801cfdb2100 R14: ffff8801db51a130 R15: ffff8801db51a130 [ 38.310538] FS: 00007f3431b4b7a0(0000) GS:ffff8801db500000(0000) knlGS:0000000000000000 [ 38.318733] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 38.324599] CR2: 00007f3431b52000 CR3: 00000001cfd49006 CR4: 00000000001626e0 [ 38.331867] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 38.339121] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 38.346376] Call Trace: [ 38.348927] [ 38.351053] hardware_disable+0x34a/0x4b0 [ 38.355171] ? kvm_io_bus_get_dev+0x1b0/0x1b0 [ 38.359656] kvm_arch_hardware_disable+0x35/0xd0 [ 38.364407] hardware_disable_nolock+0x30/0x40 [ 38.368962] flush_smp_call_function_queue+0x165/0x420 [ 38.374206] ? getname_flags+0xcb/0x580 [ 38.378146] generic_smp_call_function_single_interrupt+0x13/0x30 [ 38.384349] smp_call_function_single_interrupt+0x83/0x450 [ 38.389943] call_function_single_interrupt+0xa9/0xb0 [ 38.395098] [ 38.397304] RIP: 0010:lock_is_held_type+0x6c/0x210 [ 38.402197] RSP: 0018:ffff8801cfdbfbd0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff04 [ 38.409878] RAX: dffffc0000000000 RBX: ffff8801cfdb2100 RCX: 0000000000000002 [ 38.417121] RDX: ffffffff85ec84e0 RSI: 00000000ffffffff RDI: ffffffff85ec84e0 [ 38.424360] RBP: ffff8801cfdbfbf0 R08: 0000000000000007 R09: ffff8801cfdbf9b0 [ 38.431598] R10: 00000000e4d36624 R11: 000000003d4320f9 R12: ffff8801c0664b80 [ 38.438836] R13: ffffffff85f41100 R14: ffffffff8193c16b R15: 00000000014000c0 [ 38.446086] ? getname_flags+0xcb/0x580 [ 38.450037] rcu_read_lock_sched_held+0x108/0x120 [ 38.454850] kmem_cache_alloc+0x466/0x760 [ 38.458971] ? strncpy_from_user+0x20f/0x2d0 [ 38.463347] getname_flags+0xcb/0x580 [ 38.467121] SyS_rename+0x157/0x7f0 [ 38.470719] ? check_noncircular+0x20/0x20 [ 38.474922] ? SyS_renameat+0x7b0/0x7b0 [ 38.478867] ? __lock_is_held+0xb6/0x140 [ 38.482897] ? vfs_write+0x374/0x510 [ 38.486599] ? lock_downgrade+0x860/0x860 [ 38.490733] ? __sb_end_write+0xa0/0xd0 [ 38.494677] ? vfs_write+0x224/0x510 [ 38.498374] ? entry_SYSCALL_64_fastpath+0x5/0x9a [ 38.503190] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 38.508176] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 38.512905] entry_SYSCALL_64_fastpath+0x23/0x9a [ 38.517650] RIP: 0033:0x7f34311d8527 [ 38.521345] RSP: 002b:00007ffe08f30558 EFLAGS: 00000202 ORIG_RAX: 0000000000000052 [ 38.529039] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007f34311d8527 [ 38.536277] RDX: 0000000000000000 RSI: 00007ffe08f309a0 RDI: 00007ffe08f305a0 [ 38.543522] RBP: 0000000001e53b30 R08: 00000000004207f1 R09: 00007f34312a8e00 [ 38.550769] R10: 0000000000000022 R11: 0000000000000202 R12: 00007ffe08f30599 [ 38.558012] R13: 0000000000000008 R14: 0000000000000008 R15: 00007ffe08f30598 [ 38.565276] 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 [ 38.584358] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801db507ed0 [ 38.590478] ---[ end trace 03fa9c807188cf50 ]--- [ 38.595204] Kernel panic - not syncing: Fatal exception in interrupt [ 38.601702] Dumping ftrace buffer: [ 38.605216] (ftrace buffer empty) [ 38.608895] Kernel Offset: disabled [ 38.612490] Rebooting in 86400 seconds..