[....] Starting enhanced syslogd: rsyslogd[ 15.189085] audit: type=1400 audit(1519759801.483:5): avc: denied { syslog } for pid=4030 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 OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting file context maintaining daemon: restorecond[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 syzkaller login: [ 19.549601] audit: type=1400 audit(1519759805.844:6): avc: denied { map } for pid=4172 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 '10.128.0.15' (ECDSA) to the list of known hosts. executing program [ 25.899712] audit: type=1400 audit(1519759812.194:7): avc: denied { map } for pid=4186 comm="syzkaller060747" path="/root/syzkaller060747860" 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 [ 25.932952] kasan: CONFIG_KASAN_INLINE enabled [ 25.937793] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 25.945309] general protection fault: 0000 [#1] SMP KASAN [ 25.950835] Dumping ftrace buffer: [ 25.954346] (ftrace buffer empty) [ 25.958030] Modules linked in: [ 25.961199] CPU: 1 PID: 4186 Comm: syzkaller060747 Not tainted 4.16.0-rc3+ #331 [ 25.968613] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 25.977949] RIP: 0010:hrtimer_active+0x1da/0x3c0 [ 25.982674] RSP: 0018:ffff8801b81df3c0 EFLAGS: 00010202 [ 25.988009] RAX: 0000000000000008 RBX: 1ffff1003703bea5 RCX: ffffffff81610225 [ 25.995258] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000010 [ 26.002500] RBP: ffff8801b81df500 R08: 0000000000002c02 R09: 0000000000000000 [ 26.009743] R10: 0000000000000011 R11: ffffed00370fc078 R12: 0000000000000010 [ 26.016986] R13: 0000000000000000 R14: ffffed003703be83 R15: dffffc0000000000 [ 26.024232] FS: 00000000023a0880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 26.032431] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 26.038284] CR2: 00007f27deb08000 CR3: 00000001b92d7001 CR4: 00000000001626e0 [ 26.045528] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 26.052767] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 26.060009] Call Trace: [ 26.062587] ? hrtimer_forward+0x2d0/0x2d0 [ 26.066798] ? vmx_update_msr_bitmap+0x13a/0x430 [ 26.071530] ? setup_msrs+0x926/0x1d80 [ 26.075389] ? vmx_set_cr4+0x353/0x610 [ 26.079252] hrtimer_try_to_cancel+0x91/0x5b0 [ 26.083718] ? update_exception_bitmap+0x19a/0x200 [ 26.088618] ? __hrtimer_get_remaining+0x1c0/0x1c0 [ 26.093517] ? vmx_vcpu_reset+0x55f/0xc70 [ 26.097635] ? load_vmcs12_host_state+0x1fa0/0x1fa0 [ 26.102625] ? __mutex_unlock_slowpath+0xe9/0xac0 [ 26.107441] ? lock_downgrade+0x980/0x980 [ 26.111565] ? kvm_arch_vcpu_load+0x1c1/0x8d0 [ 26.116040] hrtimer_cancel+0x22/0x40 [ 26.119815] kvm_lapic_reset+0x93/0xf40 [ 26.123770] ? kvm_lapic_set_base+0x750/0x750 [ 26.128237] ? kvm_arch_vcpu_free+0x80/0x80 [ 26.132532] kvm_arch_vcpu_setup+0x31/0x50 [ 26.136740] kvm_vm_ioctl+0x52d/0x1cf0 [ 26.140601] ? kvm_set_memory_region+0x50/0x50 [ 26.145160] ? kfree+0xf3/0x260 [ 26.148413] ? kvm_uevent_notify_change.part.39+0x39c/0x430 [ 26.154101] ? trace_hardirqs_on+0xd/0x10 [ 26.158226] ? fd_install+0x4d/0x60 [ 26.161828] ? kvm_dev_ioctl+0x17b/0x18b0 [ 26.165950] ? install_new_memslots+0x420/0x420 [ 26.170591] ? lock_release+0xa40/0xa40 [ 26.174539] ? rcutorture_record_progress+0x10/0x10 [ 26.179533] ? avc_has_extended_perms+0x7fa/0x12c0 [ 26.184445] ? avc_ss_reset+0x110/0x110 [ 26.188478] ? save_stack+0xa3/0xd0 [ 26.192075] ? save_stack+0x43/0xd0 [ 26.195670] ? __kasan_slab_free+0x11a/0x170 [ 26.200049] ? kasan_slab_free+0xe/0x10 [ 26.203993] ? kmem_cache_free+0x83/0x2a0 [ 26.208114] ? putname+0xee/0x130 [ 26.211535] ? SyS_openat+0x30/0x40 [ 26.215135] ? do_syscall_64+0x281/0x940 [ 26.219174] ? debug_check_no_obj_freed+0x3da/0xf1f [ 26.224162] ? __lock_is_held+0xb6/0x140 [ 26.228203] ? check_same_owner+0x320/0x320 [ 26.232498] ? get_unused_fd_flags+0x190/0x190 [ 26.237056] ? rcu_note_context_switch+0x710/0x710 [ 26.241961] ? kvm_set_memory_region+0x50/0x50 [ 26.246513] do_vfs_ioctl+0x1b1/0x1520 [ 26.250375] ? debug_lockdep_rcu_enabled+0x77/0x90 [ 26.255275] ? ioctl_preallocate+0x2b0/0x2b0 [ 26.259656] ? selinux_capable+0x40/0x40 [ 26.263688] ? putname+0xf3/0x130 [ 26.267114] ? do_sys_open+0x320/0x6d0 [ 26.270976] ? security_file_ioctl+0x7d/0xb0 [ 26.275364] ? security_file_ioctl+0x89/0xb0 [ 26.279750] SyS_ioctl+0x8f/0xc0 [ 26.283090] ? do_vfs_ioctl+0x1520/0x1520 [ 26.287210] do_syscall_64+0x281/0x940 [ 26.291069] ? __do_page_fault+0xc90/0xc90 [ 26.295274] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 26.300016] ? syscall_return_slowpath+0x550/0x550 [ 26.304924] ? syscall_return_slowpath+0x2ac/0x550 [ 26.309836] ? prepare_exit_to_usermode+0x350/0x350 [ 26.314836] ? entry_SYSCALL_64_after_hwframe+0x52/0xb7 [ 26.320174] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 26.324991] entry_SYSCALL_64_after_hwframe+0x42/0xb7 [ 26.330154] RIP: 0033:0x43fcf9 [ 26.333315] RSP: 002b:00007fff248aa7f8 EFLAGS: 00000217 ORIG_RAX: 0000000000000010 [ 26.340995] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fcf9 [ 26.348238] RDX: 0000000000000000 RSI: 000000000000ae41 RDI: 0000000000000004 [ 26.355478] RBP: 00000000006ca018 R08: 00000000004002c8 R09: 00000000004002c8 [ 26.362717] R10: 00000000004002c8 R11: 0000000000000217 R12: 0000000000401620 [ 26.369958] R13: 00000000004016b0 R14: 0000000000000000 R15: 0000000000000000 [ 26.377207] 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 [ 26.396286] RIP: hrtimer_active+0x1da/0x3c0 RSP: ffff8801b81df3c0 [ 26.402560] ---[ end trace 11cfa2504b51f749 ]--- [ 26.407322] Kernel panic - not syncing: Fatal exception [ 26.413133] Dumping ftrace buffer: [ 26.416644] (ftrace buffer empty) [ 26.420324] Kernel Offset: disabled [ 26.423923] Rebooting in 86400 seconds..