[....] Starting enhanced syslogd: rsyslogd[ 16.331552] audit: type=1400 audit(1519756169.151:5): avc: denied { syslog } for pid=4095 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: [ 22.182465] audit: type=1400 audit(1519756175.002:6): avc: denied { map } for pid=4235 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 '10.128.0.8' (ECDSA) to the list of known hosts. executing program [ 28.460583] audit: type=1400 audit(1519756181.280:7): avc: denied { map } for pid=4249 comm="syzkaller572648" path="/root/syzkaller572648674" 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 [ 28.493485] kasan: CONFIG_KASAN_INLINE enabled [ 28.498234] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.505602] general protection fault: 0000 [#1] SMP KASAN [ 28.511120] Dumping ftrace buffer: [ 28.514631] (ftrace buffer empty) [ 28.518312] Modules linked in: [ 28.521476] CPU: 0 PID: 4249 Comm: syzkaller572648 Not tainted 4.16.0-rc3+ #331 [ 28.528909] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.538240] RIP: 0010:hrtimer_active+0x1da/0x3c0 [ 28.542964] RSP: 0018:ffff8801adc3f3c0 EFLAGS: 00010202 [ 28.548295] RAX: 0000000000000008 RBX: 1ffff10035b87ea5 RCX: ffffffff81610225 [ 28.555536] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000010 [ 28.562774] RBP: ffff8801adc3f500 R08: 0000000000002c02 R09: 0000000000000000 [ 28.570019] R10: 0000000000000011 R11: ffffed0036137078 R12: 0000000000000010 [ 28.577263] R13: 0000000000000000 R14: ffffed0035b87e83 R15: dffffc0000000000 [ 28.584505] FS: 0000000001810880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 28.592698] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.598551] CR2: 00007f4c6c616000 CR3: 00000001b0d9d006 CR4: 00000000001626f0 [ 28.605792] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.613033] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.620791] Call Trace: [ 28.623355] ? hrtimer_forward+0x2d0/0x2d0 [ 28.627563] ? vmx_update_msr_bitmap+0x13a/0x430 [ 28.632295] ? setup_msrs+0x926/0x1d80 [ 28.636150] ? vmx_set_cr4+0x353/0x610 [ 28.640018] hrtimer_try_to_cancel+0x91/0x5b0 [ 28.644486] ? update_exception_bitmap+0x19a/0x200 [ 28.649386] ? __hrtimer_get_remaining+0x1c0/0x1c0 [ 28.654283] ? vmx_vcpu_reset+0x55f/0xc70 [ 28.658401] ? load_vmcs12_host_state+0x1fa0/0x1fa0 [ 28.663392] ? __mutex_unlock_slowpath+0xe9/0xac0 [ 28.668596] ? lock_downgrade+0x980/0x980 [ 28.672715] ? kvm_arch_vcpu_load+0x1c1/0x8d0 [ 28.677183] hrtimer_cancel+0x22/0x40 [ 28.680953] kvm_lapic_reset+0x93/0xf40 [ 28.684899] ? kvm_lapic_set_base+0x750/0x750 [ 28.689361] ? kvm_arch_vcpu_free+0x80/0x80 [ 28.693655] kvm_arch_vcpu_setup+0x31/0x50 [ 28.697858] kvm_vm_ioctl+0x52d/0x1cf0 [ 28.701716] ? kvm_set_memory_region+0x50/0x50 [ 28.706266] ? kfree+0xf3/0x260 [ 28.709513] ? kvm_uevent_notify_change.part.39+0x39c/0x430 [ 28.715194] ? trace_hardirqs_on+0xd/0x10 [ 28.719315] ? fd_install+0x4d/0x60 [ 28.722910] ? kvm_dev_ioctl+0x17b/0x18b0 [ 28.727036] ? install_new_memslots+0x420/0x420 [ 28.731672] ? lock_release+0xa40/0xa40 [ 28.735617] ? rcutorture_record_progress+0x10/0x10 [ 28.740609] ? avc_has_extended_perms+0x7fa/0x12c0 [ 28.745511] ? avc_ss_reset+0x110/0x110 [ 28.749454] ? save_stack+0xa3/0xd0 [ 28.753049] ? save_stack+0x43/0xd0 [ 28.756643] ? __kasan_slab_free+0x11a/0x170 [ 28.761025] ? kasan_slab_free+0xe/0x10 [ 28.764968] ? kmem_cache_free+0x83/0x2a0 [ 28.769088] ? putname+0xee/0x130 [ 28.772508] ? SyS_openat+0x30/0x40 [ 28.776107] ? do_syscall_64+0x281/0x940 [ 28.780138] ? debug_check_no_obj_freed+0x3da/0xf1f [ 28.785122] ? __lock_is_held+0xb6/0x140 [ 28.789160] ? check_same_owner+0x320/0x320 [ 28.793458] ? get_unused_fd_flags+0x190/0x190 [ 28.798012] ? rcu_note_context_switch+0x710/0x710 [ 28.802920] ? kvm_set_memory_region+0x50/0x50 [ 28.807471] do_vfs_ioctl+0x1b1/0x1520 [ 28.811329] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 28.816229] ? ioctl_preallocate+0x2b0/0x2b0 [ 28.820608] ? selinux_capable+0x40/0x40 [ 28.824646] ? putname+0xf3/0x130 [ 28.828069] ? do_sys_open+0x320/0x6d0 [ 28.831930] ? security_file_ioctl+0x7d/0xb0 [ 28.836305] ? security_file_ioctl+0x89/0xb0 [ 28.840686] SyS_ioctl+0x8f/0xc0 [ 28.844027] ? do_vfs_ioctl+0x1520/0x1520 [ 28.848145] do_syscall_64+0x281/0x940 [ 28.852001] ? __do_page_fault+0xc90/0xc90 [ 28.856210] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 28.860939] ? syscall_return_slowpath+0x550/0x550 [ 28.865839] ? syscall_return_slowpath+0x2ac/0x550 [ 28.870738] ? prepare_exit_to_usermode+0x350/0x350 [ 28.875728] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 28.881064] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 28.885880] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 28.891040] RIP: 0033:0x43fcf9 [ 28.894198] RSP: 002b:00007ffc913aff78 EFLAGS: 00000217 ORIG_RAX: 0000000000000010 [ 28.901872] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcf9 [ 28.909113] RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000004 [ 28.916355] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 28.923595] R10: 00000000004002c8 R11: 0000000000000217 R12: 0000000000401620 [ 28.930835] R13: 00000000004016b0 R14: 0000000000000000 R15: 0000000000000000 [ 28.938087] Code: ff ff 48 8d 85 18 ff ff ff 48 c1 e8 03 4e 8d 34 38 e8 1b f2 0f 00 48 8b 85 f0 fe ff ff c6 00 00 48 8b 85 d8 fe ff ff 48 c1 e8 03 <42> 80 3c 38 00 0f 85 c2 01 00 00 48 8b 85 e8 fe ff ff 48 8b 58 [ 28.957156] RIP: hrtimer_active+0x1da/0x3c0 RSP: ffff8801adc3f3c0 [ 28.963611] ---[ end trace 2cbfab6e995efa9b ]--- [ 28.968380] Kernel panic - not syncing: Fatal exception [ 28.974181] Dumping ftrace buffer: [ 28.977690] (ftrace buffer empty) [ 28.981371] Kernel Offset: disabled [ 28.984969] Rebooting in 86400 seconds..