[....] Starting enhanced syslogd: rsyslogd[ 13.176786] audit: type=1400 audit(1515888255.799:5): avc: denied { syslog } for pid=3517 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[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting periodic command scheduler: cron[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
Starting mcstransd:
[....] Starting file context maintaining daemon: restorecond[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
[....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[1G[[32m ok [39;49m8[?25h[?0c.
Debian GNU/Linux 7 syzkaller ttyS0
syzkaller login: [ 19.039585] audit: type=1400 audit(1515888261.662:6): avc: denied { map } for pid=3658 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 '10.128.0.19' (ECDSA) to the list of known hosts.
net.ipv6.conf.syz0.accept_dad = 0
net.ipv6.conf.syz0.router_solicitations = 0
[ 25.221447] audit: type=1400 audit(1515888267.844:7): avc: denied { map } for pid=3672 comm="syzkaller321769" path="/root/syzkaller321769089" 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
RTNETLINK answers: Operation not supported
RTNETLINK answers: No buffer space available
RTNETLINK answers: Operation not supported
RTNETLINK answers: Operation not supported
[ 25.595447] IPv6: ADDRCONF(NETDEV_UP): bridge0: link is not ready
RTNETLINK answers: Operation not supported
RTNETLINK answers: Operation not supported
RTNETLINK answers: Invalid argument
RTNETLINK answers: Invalid argument
RTNETLINK answers: Invalid argument
executing program
[ 25.921811] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu
[ 25.953354] kasan: CONFIG_KASAN_INLINE enabled
[ 25.958002] kasan: GPF could be caused by NULL-ptr deref or user memory access
[ 25.965356] general protection fault: 0000 [#1] SMP KASAN
[ 25.970862] Dumping ftrace buffer:
[ 25.974368] (ftrace buffer empty)
[ 25.978047] Modules linked in:
[ 25.981236] CPU: 1 PID: 3830 Comm: syzkaller321769 Not tainted 4.15.0-rc7-mm1+ #56
[ 25.988915] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[ 25.998246] RIP: 0010:native_write_cr4+0x4/0x10
[ 26.002886] RSP: 0018:ffff8801d45c7068 EFLAGS: 00010093
[ 26.008223] RAX: ffff8801d4f66700 RBX: 00000000001606e0 RCX: ffffffff811a4b82
[ 26.015461] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000001606e0
[ 26.022698] RBP: ffff8801d45c7068 R08: 1ffff1003a8b8d69 R09: 0000000000000004
[ 26.029933] R10: ffff8801d45c6fd8 R11: 0000000000000004 R12: 0000000000000093
[ 26.037169] R13: ffff8801d4f66700 R14: ffff8801db31d130 R15: ffff8801db31d130
[ 26.044408] FS: 00007f6520f35700(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000
[ 26.052610] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 26.058458] CR2: 0000000000000000 CR3: 0000000006822002 CR4: 00000000001626e0
[ 26.065698] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
[ 26.072936] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
[ 26.080787] Call Trace:
[ 26.083351] hardware_disable+0x34a/0x4b0
[ 26.087469] ? kvm_io_bus_get_dev+0x2a0/0x2a0
[ 26.091931] kvm_arch_hardware_disable+0x35/0xd0
[ 26.096653] ? kvm_io_bus_get_dev+0x2a0/0x2a0
[ 26.101115] hardware_disable_nolock+0x30/0x40
[ 26.105667] on_each_cpu+0xca/0x1b0
[ 26.109262] hardware_disable_all_nolock+0x3e/0x50
[ 26.114168] kvm_put_kvm+0x956/0xde0
[ 26.117853] ? kvm_clear_guest+0xb0/0xb0
[ 26.121883] ? kvm_irqfd_release+0xd1/0x120
[ 26.126173] ? lock_downgrade+0x980/0x980
[ 26.130298] ? _raw_spin_unlock_irq+0x27/0x70
[ 26.134764] ? kvm_irqfd_release+0xdd/0x120
[ 26.139059] ? kvm_irqfd_release+0xdd/0x120
[ 26.143348] ? kvm_put_kvm+0xde0/0xde0
[ 26.147201] kvm_vm_release+0x42/0x50
[ 26.150971] __fput+0x327/0x7e0
[ 26.154224] ? fput+0x140/0x140
[ 26.157471] ? trace_event_raw_event_sched_switch+0x800/0x800
[ 26.163323] ? _raw_spin_unlock_irq+0x27/0x70
[ 26.167787] ____fput+0x15/0x20
[ 26.171036] task_work_run+0x199/0x270
[ 26.174890] ? task_work_cancel+0x210/0x210
[ 26.179179] ? _raw_spin_unlock+0x22/0x30
[ 26.183295] ? switch_task_namespaces+0x87/0xc0
[ 26.187936] do_exit+0x9bb/0x1ad0
[ 26.191359] ? mm_update_next_owner+0x930/0x930
[ 26.195998] ? debug_check_no_locks_freed+0x3c0/0x3c0
[ 26.201422] ? __might_sleep+0x95/0x190
[ 26.205366] ? find_held_lock+0x35/0x1d0
[ 26.209493] ? futex_wait+0x402/0x9a0
[ 26.213269] ? lock_downgrade+0x980/0x980
[ 26.217383] ? __unqueue_futex+0x1c0/0x290
[ 26.221586] ? lock_release+0xa40/0xa40
[ 26.225526] ? fault_in_user_writeable+0x90/0x90
[ 26.230249] ? do_raw_spin_trylock+0x190/0x190
[ 26.234801] ? futex_wake+0x680/0x680
[ 26.238570] ? check_noncircular+0x20/0x20
[ 26.242775] ? mmdrop+0x18/0x30
[ 26.246026] ? drop_futex_key_refs.isra.12+0x63/0xa0
[ 26.251099] ? futex_wait+0x6a9/0x9a0
[ 26.254874] ? find_held_lock+0x35/0x1d0
[ 26.258907] ? get_signal+0x7ae/0x16c0
[ 26.262763] ? lock_downgrade+0x980/0x980
[ 26.266885] do_group_exit+0x149/0x400
[ 26.270741] ? do_raw_spin_trylock+0x190/0x190
[ 26.275291] ? SyS_exit+0x30/0x30
[ 26.278714] ? _raw_spin_unlock_irq+0x27/0x70
[ 26.283187] ? trace_hardirqs_on_caller+0x421/0x5c0
[ 26.288181] get_signal+0x73f/0x16c0
[ 26.292040] ? ptrace_notify+0x130/0x130
[ 26.296072] ? exit_robust_list+0x240/0x240
[ 26.300362] ? find_held_lock+0x35/0x1d0
[ 26.304415] ? __fget+0x333/0x570
[ 26.307836] ? lock_downgrade+0x980/0x980
[ 26.311956] do_signal+0x90/0x1eb0
[ 26.315466] ? __lock_is_held+0xb6/0x140
[ 26.319498] ? setup_sigcontext+0x7d0/0x7d0
[ 26.323790] ? __fget+0x35c/0x570
[ 26.327217] ? iterate_fd+0x3f0/0x3f0
[ 26.330991] ? finish_task_switch+0x1d3/0x740
[ 26.335471] ? exit_to_usermode_loop+0x8c/0x2f0
[ 26.340119] exit_to_usermode_loop+0x258/0x2f0
[ 26.344672] ? ioctl_preallocate+0x2b0/0x2b0
[ 26.349053] ? trace_event_raw_event_sys_exit+0x260/0x260
[ 26.354559] ? selinux_capable+0x40/0x40
[ 26.358600] syscall_return_slowpath+0x490/0x550
[ 26.363322] ? prepare_exit_to_usermode+0x340/0x340
[ 26.368306] ? entry_SYSCALL_64_fastpath+0x73/0xa0
[ 26.373206] ? trace_hardirqs_on_caller+0x421/0x5c0
[ 26.378190] ? trace_hardirqs_on_thunk+0x1a/0x1c
[ 26.382917] entry_SYSCALL_64_fastpath+0x9e/0xa0
[ 26.387638] RIP: 0033:0x44a399
[ 26.390794] RSP: 002b:00007f6520f34da8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
[ 26.398467] RAX: fffffffffffffe00 RBX: 00000000006dcc54 RCX: 000000000044a399
[ 26.405704] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000006dcc54
[ 26.412942] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
[ 26.420188] R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dcc50
[ 26.427431] R13: 6d766b2f7665642f R14: 00007f6520f359c0 R15: 0000000000000009
[ 26.434676] 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
[ 26.453747] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801d45c7068
[ 26.459864] ---[ end trace 0e380bac612e4fd3 ]---
[ 26.464584] Kernel panic - not syncing: Fatal exception
[ 26.470414] Dumping ftrace buffer:
[ 26.473940] (ftrace buffer empty)
[ 26.477616] Kernel Offset: disabled
[ 26.481211] Rebooting in 86400 seconds..