[....] Starting enhanced syslogd: rsyslogd[ 14.739760] audit: type=1400 audit(1518862828.062:5): avc: denied { syslog } for pid=3917 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 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: [ 17.669685] audit: type=1400 audit(1518862830.992:6): avc: denied { map } for pid=4056 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 '10.128.15.218' (ECDSA) to the list of known hosts. executing program [ 40.405486] audit: type=1400 audit(1518862853.728:7): avc: denied { map } for pid=4074 comm="syzkaller787570" path="/root/syzkaller787570356" 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 [ 40.409112] FAULT_INJECTION: forcing a failure. [ 40.409112] name failslab, interval 1, probability 0, space 0, times 1 [ 40.442843] CPU: 0 PID: 4074 Comm: syzkaller787570 Not tainted 4.16.0-rc1+ #231 [ 40.450266] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.459595] Call Trace: [ 40.462161] dump_stack+0x194/0x257 [ 40.465767] ? arch_local_irq_restore+0x53/0x53 [ 40.470414] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 40.475585] should_fail+0x8c0/0xa40 [ 40.479289] ? fault_create_debugfs_attr+0x1f0/0x1f0 [ 40.484367] ? lock_release+0xa40/0xa40 [ 40.488323] ? debug_check_no_locks_freed+0x3c0/0x3c0 [ 40.493487] ? __radix_tree_replace+0x1af/0x310 [ 40.498129] ? check_noncircular+0x20/0x20 [ 40.502336] ? radix_tree_delete+0x30/0x30 [ 40.506555] ? node_tag_clear+0xf2/0x180 [ 40.510593] ? print_irqtrace_events+0x270/0x270 [ 40.515327] ? print_irqtrace_events+0x270/0x270 [ 40.520058] ? find_held_lock+0x35/0x1d0 [ 40.524107] should_failslab+0xec/0x120 [ 40.528057] kmem_cache_alloc_trace+0x4b/0x740 [ 40.532617] ? tipc_conn_rcv_sub.isra.4+0x1f7/0x760 [ 40.537608] ? lock_downgrade+0x980/0x980 [ 40.541736] tipc_sub_subscribe+0x200/0x510 [ 40.546033] ? tipc_sub_get+0x20/0x20 [ 40.549815] tipc_conn_rcv_sub.isra.4+0x383/0x760 [ 40.554632] ? tipc_conn_delete_sub+0x4a0/0x4a0 [ 40.559275] ? lock_release+0xa40/0xa40 [ 40.563224] ? __lock_is_held+0xb6/0x140 [ 40.567267] tipc_topsrv_kern_subscr+0x5f6/0x9e0 [ 40.571999] ? tipc_topsrv_queue_evt+0x6d0/0x6d0 [ 40.576727] ? tipc_group_create+0x2b6/0x940 [ 40.581109] ? lock_downgrade+0x980/0x980 [ 40.585238] ? memset+0x31/0x40 [ 40.588497] ? tipc_bcast_stop+0x350/0x350 [ 40.592713] tipc_group_create+0x6be/0x940 [ 40.596934] ? tipc_group_size+0x50/0x50 [ 40.600977] ? mark_held_locks+0xaf/0x100 [ 40.605097] ? do_raw_spin_trylock+0x190/0x190 [ 40.609657] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 40.614662] ? lock_sock_nested+0x91/0x110 [ 40.618868] ? trace_hardirqs_on+0xd/0x10 [ 40.622989] ? __local_bh_enable_ip+0x121/0x230 [ 40.627636] tipc_setsockopt+0x28a/0xcf0 [ 40.631677] ? tipc_sk_leave+0x200/0x200 [ 40.635725] ? security_socket_setsockopt+0x89/0xb0 [ 40.640719] SyS_setsockopt+0x189/0x360 [ 40.644673] ? SyS_recv+0x40/0x40 [ 40.648096] ? SyS_write+0x184/0x220 [ 40.651796] ? SyS_read+0x220/0x220 [ 40.655398] ? do_syscall_64+0xb7/0x940 [ 40.659346] ? SyS_recv+0x40/0x40 [ 40.662775] do_syscall_64+0x282/0x940 [ 40.666634] ? __do_page_fault+0xc90/0xc90 [ 40.670845] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 40.675574] ? syscall_return_slowpath+0x550/0x550 [ 40.680475] ? syscall_return_slowpath+0x2ac/0x550 [ 40.685376] ? prepare_exit_to_usermode+0x350/0x350 [ 40.690370] ? entry_SYSCALL_64_after_hwframe+0x36/0x9b [ 40.695711] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 40.700532] entry_SYSCALL_64_after_hwframe+0x26/0x9b [ 40.705695] RIP: 0033:0x440419 [ 40.708855] RSP: 002b:00007ffcb9e1d588 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 40.716544] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440419 [ 40.723785] RDX: 0000000000000087 RSI: 000000000000010f RDI: 0000000000000003 [ 40.731027] RBP: 00000000006cb018 R08: 0000000000000010 R09: 0000000000000033 [ 40.738269] R10: 0000000020265000 R11: 0000000000000246 R12: 0000000000000004 [ 40.745512] R13: ffffffffffffffff R14: 0000000000000000 R15: 0000000000000000 [ 40.752837] Subscription rejected, no memory [ 40.757246] kasan: CONFIG_KASAN_INLINE enabled [ 40.761883] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 40.769247] general protection fault: 0000 [#1] SMP KASAN [ 40.774759] Dumping ftrace buffer: [ 40.778269] (ftrace buffer empty) [ 40.781949] Modules linked in: [ 40.785114] CPU: 0 PID: 4074 Comm: syzkaller787570 Not tainted 4.16.0-rc1+ #231 [ 40.792528] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.801859] RIP: 0010:tipc_conn_close+0x4c/0x130 [ 40.806585] RSP: 0018:ffff8801d82a78e8 EFLAGS: 00010202 [ 40.811917] RAX: dffffc0000000000 RBX: ffff8801c5f54580 RCX: ffffffff856e9b57 [ 40.819158] RDX: 0000000000000004 RSI: 1ffff1003b054e9d RDI: 0000000000000020 [ 40.826398] RBP: ffff8801d82a7908 R08: 1ffff1003b054e34 R09: 0000000000000000 [ 40.833639] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 40.840879] R13: ffff8801d82a79e0 R14: ffff8801c5f54588 R15: ffff8801d1cb1a00 [ 40.848117] FS: 0000000001763880(0000) GS:ffff8801db400000(0000) knlGS:0000000000000000 [ 40.856313] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.862164] CR2: 000056422776e110 CR3: 00000001c51bc003 CR4: 00000000001606f0 [ 40.869406] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.876647] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.883886] Call Trace: [ 40.886448] tipc_topsrv_kern_subscr+0x7e1/0x9e0 [ 40.891174] ? tipc_topsrv_queue_evt+0x6d0/0x6d0 [ 40.895915] ? tipc_group_create+0x2b6/0x940 [ 40.900294] ? lock_downgrade+0x980/0x980 [ 40.904425] ? memset+0x31/0x40 [ 40.907679] ? tipc_bcast_stop+0x350/0x350 [ 40.911887] tipc_group_create+0x6be/0x940 [ 40.916095] ? tipc_group_size+0x50/0x50 [ 40.920130] ? mark_held_locks+0xaf/0x100 [ 40.924259] ? do_raw_spin_trylock+0x190/0x190 [ 40.928813] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 40.933800] ? lock_sock_nested+0x91/0x110 [ 40.938006] ? trace_hardirqs_on+0xd/0x10 [ 40.942127] ? __local_bh_enable_ip+0x121/0x230 [ 40.946772] tipc_setsockopt+0x28a/0xcf0 [ 40.950805] ? tipc_sk_leave+0x200/0x200 [ 40.954842] ? security_socket_setsockopt+0x89/0xb0 [ 40.959829] SyS_setsockopt+0x189/0x360 [ 40.963774] ? SyS_recv+0x40/0x40 [ 40.967196] ? SyS_write+0x184/0x220 [ 40.970880] ? SyS_read+0x220/0x220 [ 40.974479] ? do_syscall_64+0xb7/0x940 [ 40.978427] ? SyS_recv+0x40/0x40 [ 40.981849] do_syscall_64+0x282/0x940 [ 40.985716] ? __do_page_fault+0xc90/0xc90 [ 40.989921] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 40.994646] ? syscall_return_slowpath+0x550/0x550 [ 40.999544] ? syscall_return_slowpath+0x2ac/0x550 [ 41.004454] ? prepare_exit_to_usermode+0x350/0x350 [ 41.009444] ? entry_SYSCALL_64_after_hwframe+0x36/0x9b [ 41.014779] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 41.019594] entry_SYSCALL_64_after_hwframe+0x26/0x9b [ 41.024763] RIP: 0033:0x440419 [ 41.027921] RSP: 002b:00007ffcb9e1d588 EFLAGS: 00000246 ORIG_RAX: 0000000000000036 [ 41.035598] RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000440419 [ 41.042840] RDX: 0000000000000087 RSI: 000000000000010f RDI: 0000000000000003 [ 41.050091] RBP: 00000000006cb018 R08: 0000000000000010 R09: 0000000000000033 [ 41.057339] R10: 0000000020265000 R11: 0000000000000246 R12: 0000000000000004 [ 41.064579] R13: ffffffffffffffff R14: 0000000000000000 R15: 0000000000000000 [ 41.071826] Code: fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 f1 00 00 00 4c 8b 63 08 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 20 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 c3 00 00 00 4d 8b 6c 24 20 4d 8d a5 58 03 00 [ 41.090894] RIP: tipc_conn_close+0x4c/0x130 RSP: ffff8801d82a78e8 [ 41.097148] ---[ end trace 39a5075916eff3f7 ]--- [ 41.101885] Kernel panic - not syncing: Fatal exception [ 41.107580] Dumping ftrace buffer: [ 41.111090] (ftrace buffer empty) [ 41.114770] Kernel Offset: disabled [ 41.118367] Rebooting in 86400 seconds..