[....] Starting enhanced syslogd: rsyslogd[ 12.391446] audit: type=1400 audit(1512696020.967:5): avc: denied { syslog } for pid=2990 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: [ 34.174618] audit: type=1400 audit(1512696042.750:6): avc: denied { map } for pid=3134 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-next-kasan-gce-9,10.128.15.233' (ECDSA) to the list of known hosts. executing program [ 40.171492] audit: type=1400 audit(1512696048.747:7): avc: denied { map } for pid=3146 comm="syzkaller782464" path="/root/syzkaller782464048" 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 [ 40.175475] kasan: CONFIG_KASAN_INLINE enabled [ 40.175485] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 40.175491] general protection fault: 0000 [#1] SMP KASAN [ 40.175496] Dumping ftrace buffer: [ 40.175500] (ftrace buffer empty) [ 40.175502] Modules linked in: [ 40.175509] CPU: 1 PID: 3146 Comm: syzkaller782464 Not tainted 4.15.0-rc2-next-20171207+ #62 [ 40.175511] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 40.175524] RIP: 0010:show_timer+0x1c7/0x2b0 [ 40.175526] RSP: 0018:ffff8801c51e7ac8 EFLAGS: 00010002 [ 40.175530] RAX: dffffc0000000000 RBX: ffff8801c57cfe00 RCX: ffffffff81cd3e8e [ 40.175532] RDX: 0000000050ae869d RSI: ffffffff8631a740 RDI: 00000002857434e8 [ 40.175535] RBP: ffff8801c51e7af8 R08: ffffed00389a49ad R09: ffffed00389a49ad [ 40.175537] R10: ffff8801c55ae500 R11: ffffed00389a49ac R12: 0000000060000001 [ 40.175540] R13: ffff8801c5b2f200 R14: ffffffff857425e0 R15: 0000000000000c4a [ 40.175543] FS: 00000000022a5880(0000) GS:ffff8801db300000(0000) knlGS:0000000000000000 [ 40.175545] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 40.175547] CR2: 0000000020b15000 CR3: 00000001c70e9000 CR4: 00000000001406e0 [ 40.175552] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 40.175555] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 40.175556] Call Trace: [ 40.175560] ? timers_start+0x14c/0x1c0 [ 40.175574] seq_read+0x385/0x13d0 [ 40.175585] ? seq_lseek+0x3c0/0x3c0 [ 40.175592] ? selinux_file_permission+0x82/0x460 [ 40.175600] ? security_file_permission+0x89/0x1f0 [ 40.175606] ? rw_verify_area+0xe5/0x2b0 [ 40.175612] do_iter_read+0x3db/0x5b0 [ 40.175618] ? dup_iter+0x260/0x260 [ 40.175627] vfs_readv+0x121/0x1c0 [ 40.175633] ? compat_rw_copy_check_uvector+0x2e0/0x2e0 [ 40.175641] ? mm_fault_error+0x2c0/0x2c0 [ 40.175648] ? trace_event_raw_event_sched_switch+0x800/0x800 [ 40.175655] ? fget_raw+0x20/0x20 [ 40.175660] ? do_page_fault+0xee/0x720 [ 40.175669] ? kasan_check_write+0x14/0x20 [ 40.175673] ? _copy_from_user+0x99/0x110 [ 40.175680] do_preadv+0x11b/0x1a0 [ 40.175683] ? do_preadv+0x11b/0x1a0 [ 40.175689] SyS_preadv+0x30/0x40 [ 40.175699] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 40.175703] RIP: 0033:0x440159 [ 40.175704] RSP: 002b:00007ffd85714a98 EFLAGS: 00000217 ORIG_RAX: 0000000000000127 [ 40.175708] RAX: ffffffffffffffda RBX: 00007ffd85714aa0 RCX: 0000000000440159 [ 40.175710] RDX: 0000000000000001 RSI: 0000000020b15000 RDI: 0000000000000003 [ 40.175713] RBP: 0000000000000000 R08: 65732f636f72702f R09: 65732f636f72702f [ 40.175715] R10: 0000000000000000 R11: 0000000000000217 R12: 0000000000401a20 [ 40.175717] R13: 0000000000401ab0 R14: 0000000000000000 R15: 0000000000000000 [ 40.175725] Code: 89 c7 4c 0f 44 f1 41 83 e4 fb 4d 63 e4 e8 42 fc a2 ff 4a 8d 3c e5 e0 34 74 85 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 a2 00 00 00 4a 8b 14 e5 e0 34 74 85 4c 89 ef [ 40.175794] RIP: show_timer+0x1c7/0x2b0 RSP: ffff8801c51e7ac8 [ 40.175801] ---[ end trace ff5c7c600349b8bd ]--- [ 40.175803] Kernel panic - not syncing: Fatal exception [ 40.197412] Dumping ftrace buffer: [ 40.197416] (ftrace buffer empty) [ 40.197418] Kernel Offset: disabled [ 40.501938] Rebooting in 86400 seconds..