[ 11.481257] audit: type=1400 audit(1514834717.140:5): avc: denied { syslog } for pid=3306 comm="rsyslogd" capability=34 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 [....] Starting enhanced syslogd: rsyslogd[?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: [ 17.674872] audit: type=1400 audit(1514834723.333:6): avc: denied { map } for pid=3450 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 '10.128.0.23' (ECDSA) to the list of known hosts. [ 23.811734] audit: type=1400 audit(1514834729.470:7): avc: denied { map } for pid=3464 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 2018/01/01 19:25:29 parsed 1 programs 2018/01/01 19:25:29 executed programs: 0 [ 23.931837] audit: type=1400 audit(1514834729.590:8): avc: denied { map } for pid=3464 comm="syz-execprog" path="/root/syzkaller-shm829548934" 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 [ 24.133388] kvm: KVM_SET_TSS_ADDR need to be called before entering vcpu [ 24.187985] kasan: CONFIG_KASAN_INLINE enabled [ 24.192584] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 24.199913] general protection fault: 0000 [#1] SMP KASAN [ 24.205421] Dumping ftrace buffer: [ 24.208924] (ftrace buffer empty) [ 24.212599] Modules linked in: [ 24.215761] CPU: 1 PID: 1770 Comm: udevd Not tainted 4.15.0-rc6+ #245 [ 24.222303] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 24.231630] RIP: 0010:native_write_cr4+0x4/0x10 [ 24.236260] RSP: 0018:ffff8801db307ca8 EFLAGS: 00010006 [ 24.241586] RAX: ffff8801d0150040 RBX: 00000000001606e0 RCX: ffffffff811a3242 [ 24.248825] RDX: 0000000000010000 RSI: 0000000000000000 RDI: 00000000001606e0 [ 24.256058] RBP: ffff8801db307ca8 R08: 0000000000000000 R09: 1ffff1003a02bea6 [ 24.263291] R10: ffff8801d015f4f8 R11: 0000000000000002 R12: 0000000000000006 [ 24.270533] R13: ffff8801d0150040 R14: ffff8801db31a130 R15: ffff8801db31a130 [ 24.277768] FS: 00007f3391e097a0(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 24.285955] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 24.291798] CR2: 00007f3391e10000 CR3: 00000001d00b2003 CR4: 00000000001626e0 [ 24.299033] Call Trace: [ 24.301579] [ 24.303697] hardware_disable+0x34a/0x4b0 [ 24.307809] ? irq_work_sync+0x1a0/0x1a0 [ 24.311834] ? lock_downgrade+0x980/0x980 [ 24.315948] ? kvm_io_bus_get_dev+0x2a0/0x2a0 [ 24.320406] kvm_arch_hardware_disable+0x35/0xd0 [ 24.325126] hardware_disable_nolock+0x30/0x40 [ 24.329670] flush_smp_call_function_queue+0x1f4/0x570 [ 24.334912] ? cpumask_weight+0x40/0x40 [ 24.338850] ? tick_program_event+0x83/0x100 [ 24.343225] ? __lock_is_held+0xb6/0x140 [ 24.347255] generic_smp_call_function_single_interrupt+0x13/0x30 [ 24.353450] smp_call_function_single_interrupt+0x103/0x640 [ 24.359124] ? smp_call_function_interrupt+0x640/0x640 [ 24.364364] ? _raw_spin_lock+0x32/0x40 [ 24.368302] ? _raw_spin_unlock+0x22/0x30 [ 24.372413] ? handle_edge_irq+0x2b4/0x7c0 [ 24.376613] ? task_prio+0x40/0x40 [ 24.380122] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 24.384929] call_function_single_interrupt+0xa9/0xb0 [ 24.390079] [ 24.392281] RIP: 0010:shmem_evict_inode+0x31c/0xb30 [ 24.397258] RSP: 0018:ffff8801d015f410 EFLAGS: 00000202 ORIG_RAX: ffffffffffffff04 [ 24.404929] RAX: dffffc0000000000 RBX: ffff8801d015f628 RCX: ffffffff81947ae4 [ 24.412163] RDX: 1ffff100382f9e08 RSI: 0000000000000003 RDI: ffff8801c17cf040 [ 24.419396] RBP: ffff8801d015f650 R08: 0000000000000000 R09: 1ffff1003a02bea6 [ 24.426629] R10: ffff8801d015f4f8 R11: 0000000000000002 R12: 1ffff1003a02be89 [ 24.433864] R13: ffff8801c17cf100 R14: ffff8801d1062940 R15: ffff8801c17cf000 [ 24.441104] ? shmem_evict_inode+0x294/0xb30 [ 24.445478] ? __lock_acquire+0x664/0x3e00 [ 24.449679] ? shmem_truncate_range+0xa0/0xa0 [ 24.454138] ? find_held_lock+0x35/0x1d0 [ 24.458170] ? inode_wait_for_writeback+0x2f/0x40 [ 24.462976] ? lock_downgrade+0x980/0x980 [ 24.467087] ? lock_release+0xa40/0xa40 [ 24.471032] ? __inode_wait_for_writeback+0x292/0x330 [ 24.476187] ? do_raw_spin_trylock+0x190/0x190 [ 24.480735] ? bit_waitqueue+0x30/0x30 [ 24.484591] ? _raw_spin_unlock+0x22/0x30 [ 24.488705] ? shmem_truncate_range+0xa0/0xa0 [ 24.493164] evict+0x481/0x920 [ 24.496322] ? destroy_inode+0x200/0x200 [ 24.500348] ? iput+0x7b1/0xaf0 [ 24.503595] ? lock_downgrade+0x980/0x980 [ 24.507707] ? _raw_spin_lock+0x32/0x40 [ 24.511647] ? _atomic_dec_and_lock+0x125/0x196 [ 24.516281] ? do_raw_spin_trylock+0x190/0x190 [ 24.520826] ? cpumask_local_spread+0x250/0x250 [ 24.525459] ? lock_downgrade+0x980/0x980 [ 24.529573] iput+0x7b9/0xaf0 [ 24.532646] ? find_inode_nowait+0x180/0x180 [ 24.537018] ? evict_inodes+0x580/0x580 [ 24.540957] ? fsnotify_grab_connector+0x17f/0x270 [ 24.545850] ? fsnotify_recalc_mask.part.6+0xa0/0xa0 [ 24.550915] ? find_held_lock+0x35/0x1d0 [ 24.554939] ? do_raw_spin_trylock+0x190/0x190 [ 24.559486] ? fsnotify_first_mark+0x2b0/0x2b0 [ 24.564038] ? fsnotify_destroy_marks+0x13e/0x190 [ 24.568846] dentry_unlink_inode+0x4b0/0x5e0 [ 24.573214] ? __dentry_kill+0x37b/0x6d0 [ 24.577238] ? release_dentry_name_snapshot+0x70/0x70 [ 24.582389] ? reacquire_held_locks+0x1f9/0x3e0 [ 24.587019] ? reacquire_held_locks+0x1f9/0x3e0 [ 24.591653] ? lockref_put_or_lock+0x19/0x80 [ 24.596024] ? __d_drop+0x2b9/0x4b0 [ 24.599636] ? do_raw_spin_trylock+0x190/0x190 [ 24.604181] ? d_exact_alias+0x620/0x620 [ 24.608206] ? lock_acquire+0x1d5/0x580 [ 24.612142] ? lock_acquire+0x1d5/0x580 [ 24.616083] __dentry_kill+0x3b7/0x6d0 [ 24.619935] ? check_and_drop+0x170/0x170 [ 24.624054] dput.part.23+0x5a0/0x830 [ 24.628153] ? dentry_path_raw+0x30/0x30 [ 24.632179] ? lookup_dcache+0x5a/0x100 [ 24.636117] dput+0x1f/0x30 [ 24.639012] SyS_rename+0x909/0xc90 [ 24.642607] ? SyS_renameat+0xca0/0xca0 [ 24.646546] ? __lock_is_held+0xb6/0x140 [ 24.650580] ? __sb_end_write+0xa0/0xd0 [ 24.654518] ? vfs_write+0x224/0x510 [ 24.658196] ? SyS_write+0x184/0x220 [ 24.661876] ? entry_SYSCALL_64_fastpath+0x5/0x9a [ 24.666684] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 24.671664] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 24.676387] entry_SYSCALL_64_fastpath+0x23/0x9a [ 24.681105] RIP: 0033:0x7f3391496527 [ 24.684778] RSP: 002b:00007fffde0b1988 EFLAGS: 00000206 ORIG_RAX: 0000000000000052 [ 24.692450] RAX: ffffffffffffffda RBX: 0000000000000008 RCX: 00007f3391496527 [ 24.699683] RDX: 0000000000000000 RSI: 00007fffde0b1dd0 RDI: 00007fffde0b19d0 [ 24.706918] RBP: 00000000014ce7a0 R08: 00000000004207f1 R09: 00007f3391566e00 [ 24.714151] R10: 0000000000000022 R11: 0000000000000206 R12: 00007fffde0b19c9 [ 24.721383] R13: 0000000000000008 R14: 0000000000000008 R15: 00007fffde0b19c8 [ 24.728624] 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 [ 24.747683] RIP: native_write_cr4+0x4/0x10 RSP: ffff8801db307ca8 [ 24.753792] ---[ end trace 734270f536bd5f1a ]--- [ 24.758509] Kernel panic - not syncing: Fatal exception in interrupt [ 24.764991] Dumping ftrace buffer: [ 24.768497] (ftrace buffer empty) [ 24.772174] Kernel Offset: disabled [ 24.775764] Rebooting in 86400 seconds..