[ 10.457206] rsyslogd (2973) used greatest stack depth: 16928 bytes left [?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: [ 16.410341] audit: type=1400 audit(1513387559.058:6): avc: denied { map } for pid=3125 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 'ci-upstream-kasan-gce-2,10.128.15.241' (ECDSA) to the list of known hosts. [ 22.573327] audit: type=1400 audit(1513387565.221:7): avc: denied { map } for pid=3139 comm="syz-execprog" path="/root/syz-execprog" dev="sda1" ino=16479 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:user_home_t:s0 tclass=file permissive=1 2017/12/16 01:26:05 parsed 1 programs 2017/12/16 01:26:05 executed programs: 0 [ 23.055556] audit: type=1400 audit(1513387565.703:8): avc: denied { map } for pid=3139 comm="syz-execprog" path="/root/syzkaller-shm003677203" dev="sda1" ino=16482 scontext=unconfined_u:system_r:insmod_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:file_t:s0 tclass=file permissive=1 [ 23.208908] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu 2017/12/16 01:26:10 executed programs: 119 [ 30.255424] kasan: CONFIG_KASAN_INLINE enabled [ 30.260053] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 30.267385] general protection fault: 0000 [#1] SMP KASAN [ 30.272889] Dumping ftrace buffer: [ 30.276393] (ftrace buffer empty) [ 30.280069] Modules linked in: [ 30.283233] CPU: 0 PID: 3120 Comm: udevd Not tainted 4.15.0-rc3+ #223 [ 30.289775] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 30.299104] RIP: 0010:native_write_cr4+0x4/0x10 [ 30.303738] RSP: 0018:ffff8801db407ca8 EFLAGS: 00010006 [ 30.309070] RAX: ffff8801cd40a340 RBX: 00000000001606f0 RCX: ffffffff811a2a92 [ 30.316306] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606f0 [ 30.323543] RBP: ffff8801db407ca8 R08: 0000000000000000 R09: 1ffff10039aa3ec9 [ 30.330780] R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000006 [ 30.338017] R13: ffff8801cd40a340 R14: ffff8801db414850 R15: ffff8801db414850 [ 30.345257] FS: 00007f22571987a0(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 30.353448] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 30.359296] CR2: 00007f225719f000 CR3: 00000001cd079006 CR4: 00000000001626f0 [ 30.366535] Call Trace: [ 30.369083] [ 30.371204] hardware_disable+0x34a/0x4b0 [ 30.375322] ? irq_work_sync+0x1a0/0x1a0 [ 30.379349] ? lock_downgrade+0x980/0x980 [ 30.383469] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 30.387933] kvm_arch_hardware_disable+0x35/0xd0 [ 30.392752] hardware_disable_nolock+0x30/0x40 [ 30.397304] flush_smp_call_function_queue+0x1f4/0x570 [ 30.402550] ? cpumask_weight+0x40/0x40 [ 30.406493] ? tick_program_event+0x83/0x100 [ 30.410871] ? rcu_pm_notify+0xc0/0xc0 [ 30.414732] generic_smp_call_function_single_interrupt+0x13/0x30 [ 30.420931] smp_call_function_single_interrupt+0x103/0x640 [ 30.426609] ? smp_call_function_interrupt+0x640/0x640 [ 30.431854] ? _raw_spin_lock+0x32/0x40 [ 30.435801] ? handle_edge_irq+0x2b4/0x7c0 [ 30.440006] ? task_prio+0x40/0x40 [ 30.443522] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 30.448335] call_function_single_interrupt+0x9d/0xb0 [ 30.453487] [ 30.455693] RIP: 0010:lock_release+0x503/0xa40 [ 30.460238] RSP: 0018:ffff8801cd51f600 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff04 [ 30.467912] RAX: dffffc0000000000 RBX: ffff8801cd40a340 RCX: 1ffff10039a81574 [ 30.475149] RDX: 1ffffffff0bd9055 RSI: 0000000000000001 RDI: 0000000000000282 [ 30.482385] RBP: ffff8801cd51f730 R08: 0000000000000000 R09: 1ffff10039aa3ec9 [ 30.489623] R10: 0000000000000003 R11: 0000000000000000 R12: 0000000000000000 [ 30.496869] R13: ffff8801cd40a340 R14: ffff8801cd51f648 R15: 1ffff10039aa3ec5 [ 30.504121] ? avc_has_perm+0x35e/0x680 [ 30.508064] ? lock_downgrade+0x980/0x980 [ 30.512181] ? lock_release+0xa40/0xa40 [ 30.516120] ? avc_has_perm_noaudit+0x355/0x520 [ 30.520756] ? lock_downgrade+0x980/0x980 [ 30.524881] avc_has_perm+0x387/0x680 [ 30.528655] ? avc_has_perm_noaudit+0x520/0x520 [ 30.533299] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 30.539147] ? find_held_lock+0x35/0x1d0 [ 30.543177] ? rcu_note_context_switch+0x710/0x710 [ 30.548075] ? __might_sleep+0x95/0x190 [ 30.552018] ? _cond_resched+0x14/0x30 [ 30.555879] selinux_file_open+0x480/0x6c0 [ 30.560080] ? selinux_sb_clone_mnt_opts+0xc00/0xc00 [ 30.565153] ? errseq_sample+0xee/0x140 [ 30.569093] ? _copy_to_user+0xc0/0xc0 [ 30.572951] security_file_open+0x7d/0x190 [ 30.577159] do_dentry_open+0x306/0xd40 [ 30.581108] vfs_open+0x107/0x220 [ 30.584531] path_openat+0x1151/0x3530 [ 30.588394] ? path_lookupat+0xba0/0xba0 [ 30.592421] ? lock_downgrade+0x980/0x980 [ 30.596536] ? do_sys_open+0x2e7/0x6d0 [ 30.600391] ? lock_release+0xa40/0xa40 [ 30.604333] ? find_held_lock+0x35/0x1d0 [ 30.608365] ? do_raw_spin_trylock+0x190/0x190 [ 30.612915] ? __lock_is_held+0xb6/0x140 [ 30.616945] ? _find_next_bit+0xee/0x120 [ 30.620978] ? _raw_spin_unlock+0x22/0x30 [ 30.625096] ? __alloc_fd+0x29b/0x750 [ 30.628872] do_filp_open+0x25b/0x3b0 [ 30.632641] ? may_open_dev+0xe0/0xe0 [ 30.636417] ? mpi_resize+0x200/0x200 [ 30.640187] ? get_unused_fd_flags+0x121/0x190 [ 30.644739] ? getname_flags+0x256/0x580 [ 30.648770] do_sys_open+0x502/0x6d0 [ 30.652451] ? do_sys_open+0x502/0x6d0 [ 30.656308] ? filp_open+0x70/0x70 [ 30.659813] ? entry_SYSCALL_64_fastpath+0x5/0x96 [ 30.664624] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 30.669611] SyS_open+0x2d/0x40 [ 30.672859] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 30.677580] RIP: 0033:0x7f22568a0120 [ 30.681258] RSP: 002b:00007ffc412cdd58 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 30.688933] RAX: ffffffffffffffda RBX: 0000000000a2a260 RCX: 00007f22568a0120 [ 30.696169] RDX: 00000000000001b6 RSI: 0000000000080000 RDI: 00007ffc412cde30 [ 30.703405] RBP: 00000000009f8030 R08: 0000000000000008 R09: 0000000000000001 [ 30.710645] R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001 [ 30.717883] R13: 0000000000a2a400 R14: 0000000000a41870 R15: 0000000000000001 [ 30.725128] 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 [ 30.744216] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801db407ca8 [ 30.750330] ---[ end trace e174c08fbc19c0f3 ]--- [ 30.755050] Kernel panic - not syncing: Fatal exception in interrupt [ 30.761958] Dumping ftrace buffer: [ 30.765465] (ftrace buffer empty) [ 30.769141] Kernel Offset: disabled [ 30.772732] Rebooting in 86400 seconds..