[....] Starting enhanced syslogd: rsyslogd[ 11.830622] audit: type=1400 audit(1515654992.818:5): avc: denied { syslog } for pid=3353 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: [ 16.571637] audit: type=1400 audit(1515654997.559:6): avc: denied { map } for pid=3493 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 '10.128.0.24' (ECDSA) to the list of known hosts. executing program [ 22.752648] audit: type=1400 audit(1515655003.740:7): avc: denied { map } for pid=3507 comm="syzkaller630068" path="/root/syzkaller630068803" 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 [ 22.762901] kasan: CONFIG_KASAN_INLINE enabled [ 22.762914] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 22.762921] general protection fault: 0000 [#1] SMP KASAN [ 22.762927] Dumping ftrace buffer: [ 22.762931] (ftrace buffer empty) [ 22.762932] Modules linked in: [ 22.762941] CPU: 0 PID: 3507 Comm: syzkaller630068 Not tainted 4.15.0-rc7-next-20180111+ #94 [ 22.762944] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 22.762956] RIP: 0010:get_info+0x17d/0x690 [ 22.762959] RSP: 0018:ffff8801bfad78e0 EFLAGS: 00010202 [ 22.762965] RAX: dffffc0000000000 RBX: ffffffff86e9a840 RCX: ffffffff84a8c538 [ 22.762968] RDX: 0000000000000023 RSI: 0000000000000000 RDI: 0000000000000118 [ 22.762972] RBP: ffff8801bfad7a70 R08: 1ffff10037f5ae53 R09: 0000000000000000 [ 22.762975] R10: ffffffff87f4aee0 R11: 0000000000000000 R12: ffff8801bfad7a48 [ 22.762979] R13: 1ffff10037f5af21 R14: 0000000000000100 R15: ffff8801bfad7c78 [ 22.762985] FS: 0000000001692880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 22.762988] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 22.762992] CR2: 00007ffd94855d80 CR3: 00000001bf4da002 CR4: 00000000001606f0 [ 22.762999] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 22.763009] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 22.763011] Call Trace: [ 22.763022] ? do_ipt_set_ctl+0x5f0/0x5f0 [ 22.763032] ? lock_downgrade+0x980/0x980 [ 22.763039] ? sock_map_fd+0x34/0x70 [ 22.763047] ? entry_SYSCALL_64_fastpath+0x29/0xa0 [ 22.763055] ? check_noncircular+0x20/0x20 [ 22.763060] ? sock_alloc_file+0x1f3/0x560 [ 22.763073] ? selinux_capable+0x36/0x40 [ 22.763081] ? security_capable+0x8e/0xc0 [ 22.763092] ? ns_capable_common+0xcf/0x160 [ 22.763102] do_ipt_get_ctl+0x159/0xac0 [ 22.763114] ? get_info+0x690/0x690 [ 22.763122] ? ip_getsockopt+0x143/0x220 [ 22.763136] ? mark_held_locks+0xaf/0x100 [ 22.763149] ? mutex_unlock+0xd/0x10 [ 22.763156] ? nf_sockopt_find.constprop.0+0x1a7/0x220 [ 22.763164] nf_getsockopt+0x6a/0xc0 [ 22.763173] ip_getsockopt+0x15c/0x220 [ 22.763182] ? do_ip_getsockopt+0x2170/0x2170 [ 22.763193] ? __handle_mm_fault+0x3ce0/0x3ce0 [ 22.763198] ? vmacache_find+0x5f/0x280 [ 22.763204] ? vmacache_update+0xfe/0x130 [ 22.763215] udp_getsockopt+0x45/0x80 [ 22.763226] ipv6_getsockopt+0xf3/0x2e0 [ 22.763236] ? do_ipv6_getsockopt.isra.6+0x30e0/0x30e0 [ 22.763251] udpv6_getsockopt+0x45/0x80 [ 22.763260] sock_common_getsockopt+0x95/0xd0 [ 22.763270] SyS_getsockopt+0x178/0x340 [ 22.763280] ? SyS_setsockopt+0x360/0x360 [ 22.763287] ? entry_SYSCALL_64_fastpath+0x5/0xa0 [ 22.763296] ? trace_hardirqs_on_caller+0x421/0x5c0 [ 22.763304] ? trace_hardirqs_on_thunk+0x1a/0x1c [ 22.763315] entry_SYSCALL_64_fastpath+0x29/0xa0 [ 22.763320] RIP: 0033:0x43fc89 [ 22.763323] RSP: 002b:00007ffe136cbf18 EFLAGS: 00000203 ORIG_RAX: 0000000000000037 [ 22.763329] RAX: ffffffffffffffda RBX: 00000000004002c8 RCX: 000000000043fc89 [ 22.763333] RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003 [ 22.763336] RBP: 00000000006ca018 R08: 0000000020001ffc R09: 0000000000000000 [ 22.763339] R10: 0000000020b3ffac R11: 0000000000000203 R12: 00000000004015f0 [ 22.763343] R13: 0000000000401680 R14: 0000000000000000 R15: 0000000000000000 [ 22.763357] Code: c1 ff 48 3d 00 f0 ff ff 49 89 c6 0f 87 d4 03 00 00 e8 58 db c7 fc 49 8d 7e 18 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 e9 04 00 00 49 8b 4e 18 49 8d 5c 24 80 48 89 [ 22.763468] RIP: get_info+0x17d/0x690 RSP: ffff8801bfad78e0 [ 22.763494] ---[ end trace 8fdfc3af33127a7a ]--- [ 22.763497] Kernel panic - not syncing: Fatal exception [ 22.778930] Dumping ftrace buffer: [ 22.778932] (ftrace buffer empty) [ 22.778935] Kernel Offset: disabled [ 23.136246] Rebooting in 86400 seconds..