[....] Starting enhanced syslogd: rsyslogd[ 12.036067] audit: type=1400 audit(1513047710.585:5): avc: denied { syslog } for pid=2998 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: [ 21.086077] audit: type=1400 audit(1513047719.635:6): avc: denied { map } for pid=3141 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-mmots-kasan-gce-5,10.128.15.208' (ECDSA) to the list of known hosts. executing program [ 28.197771] audit: type=1400 audit(1513047726.747:7): avc: denied { map } for pid=3155 comm="syzkaller917602" path="/root/syzkaller917602994" 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 [ 28.202772] kasan: CONFIG_KASAN_INLINE enabled [ 28.202782] kasan: GPF could be caused by NULL-ptr deref or user memory access [ 28.202787] general protection fault: 0000 [#1] SMP KASAN [ 28.202791] Dumping ftrace buffer: [ 28.202794] (ftrace buffer empty) [ 28.202796] Modules linked in: [ 28.202801] CPU: 0 PID: 3155 Comm: syzkaller917602 Not tainted 4.15.0-rc2-mm1+ #39 [ 28.202804] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 28.202813] RIP: 0010:string+0xb4/0x200 [ 28.202815] RSP: 0018:ffff8801c44ff780 EFLAGS: 00010006 [ 28.202818] RAX: dffffc0000000000 RBX: fffffffffffffffe RCX: ffffffff8515819f [ 28.202821] RDX: 000dccad8dce4e8e RSI: 1ffff1003889fe01 RDI: ffff8801c44ff7a0 [ 28.202823] RBP: ffff8801c44ff7d0 R08: ffffed0038957406 R09: ffffed0038957406 [ 28.202825] R10: 0000000000000002 R11: ffffed0038957405 R12: 006e656c6e727474 [ 28.202828] R13: 006e656c6e727473 R14: ffffffffffffffff R15: ffff8801c4aba02a [ 28.202831] FS: 000000000222f880(0000) GS:ffff8801db200000(0000) knlGS:0000000000000000 [ 28.202833] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 28.202836] CR2: 00000000205e2ff0 CR3: 00000001c5125000 CR4: 00000000001406f0 [ 28.202841] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 28.202843] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 28.202844] Call Trace: [ 28.202849] ? format_decode+0x10a/0x830 [ 28.202857] vsnprintf+0x863/0x1900 [ 28.202864] ? pointer+0x9e0/0x9e0 [ 28.202871] ? lock_release+0xda0/0xda0 [ 28.202881] seq_vprintf+0xe3/0x1a0 [ 28.202887] seq_printf+0xb3/0xe0 [ 28.202891] ? seq_vprintf+0x1a0/0x1a0 [ 28.202896] ? __lock_task_sighand+0x22f/0x6e0 [ 28.202902] ? zap_other_threads+0x240/0x240 [ 28.202907] ? kasan_kmalloc+0xad/0xe0 [ 28.202916] show_timer+0x1ee/0x2b0 [ 28.202920] ? timers_start+0x14c/0x1c0 [ 28.202926] traverse+0x248/0xa00 [ 28.202934] ? seq_hlist_next+0xc0/0xc0 [ 28.202943] seq_read+0x96a/0x13d0 [ 28.202954] ? seq_lseek+0x3c0/0x3c0 [ 28.202959] ? selinux_file_permission+0x82/0x460 [ 28.202966] ? security_file_permission+0x89/0x1f0 [ 28.202972] ? rw_verify_area+0xe5/0x2b0 [ 28.202978] do_iter_read+0x3db/0x5b0 [ 28.202983] ? dup_iter+0x260/0x260 [ 28.202993] vfs_readv+0x121/0x1c0 [ 28.202997] ? may_open_dev+0xe0/0xe0 [ 28.203005] ? compat_rw_copy_check_uvector+0x2e0/0x2e0 [ 28.203013] ? mm_fault_error+0x2c0/0x2c0 [ 28.203022] ? fget_raw+0x20/0x20 [ 28.203027] ? do_page_fault+0xee/0x720 [ 28.203033] ? putname+0xf3/0x130 [ 28.203040] ? do_sys_open+0x320/0x6d0 [ 28.203047] do_preadv+0x11b/0x1a0 [ 28.203051] ? do_preadv+0x11b/0x1a0 [ 28.203057] SyS_preadv+0x30/0x40 [ 28.203064] entry_SYSCALL_64_fastpath+0x1f/0x96 [ 28.203067] RIP: 0033:0x440159 [ 28.203069] RSP: 002b:00007ffccead57b8 EFLAGS: 00000213 ORIG_RAX: 0000000000000127 [ 28.203073] RAX: ffffffffffffffda RBX: 00007ffccead57c0 RCX: 0000000000440159 [ 28.203075] RDX: 0000000000000001 RSI: 00000000205e2ff0 RDI: 0000000000000003 [ 28.203077] RBP: 0000000000000000 R08: 0000000000000011 R09: 65732f636f72702f [ 28.203079] R10: 0001000000000000 R11: 0000000000000213 R12: 0000000000401a20 [ 28.203081] R13: 0000000000401ab0 R14: 0000000000000000 R15: 0000000000000000 [ 28.203095] Code: 01 00 00 e8 0f b4 5a fc 4d 85 f6 0f 84 10 01 00 00 e8 01 b4 5a fc 4c 89 ea 48 b8 00 00 00 00 00 fc ff df 4d 8d 65 01 48 c1 ea 03 <0f> b6 04 02 4c 89 ea 83 e2 07 38 d0 7f 08 84 c0 0f 85 ec 00 00 [ 28.203163] RIP: string+0xb4/0x200 RSP: ffff8801c44ff780 [ 28.203169] ---[ end trace c05b9ffee56089e7 ]--- [ 28.203171] Kernel panic - not syncing: Fatal exception [ 28.223971] Dumping ftrace buffer: [ 28.223972] (ftrace buffer empty) [ 28.223974] Kernel Offset: disabled [ 28.572782] Rebooting in 86400 seconds..