[info] Using makefile-style concurrent boot in runlevel 2. [ 25.743055] audit: type=1800 audit(1543081925.206:21): pid=5834 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 25.771488] audit: type=1800 audit(1543081925.206:22): pid=5834 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="motd" dev="sda1" ino=2447 res=0 [....] Starting enhanced syslogd: rsyslogd[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting periodic command scheduler: cron[?25l[?1c7[ ok 8[?25h[?0c. [....] Starting OpenBSD Secure Shell server: sshd[?25l[?1c7[ ok 8[?25h[?0c. Debian GNU/Linux 7 syzkaller ttyS0 Warning: Permanently added '10.128.0.21' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 35.523505] [ 35.525160] ==================================== [ 35.529961] WARNING: syz-executor195/5988 still has locks held! [ 35.536014] 4.20.0-rc3+ #250 Not tainted [ 35.540317] ------------------------------------ [ 35.545063] 1 lock held by syz-executor195/5988: [ 35.549835] #0: 0000000020981dc5 (&sig->cred_guard_mutex){+.+.}, at: prepare_bprm_creds+0x53/0x120 [ 35.559113] [ 35.559113] stack backtrace: [ 35.563604] CPU: 0 PID: 5988 Comm: syz-executor195 Not tainted 4.20.0-rc3+ #250 [ 35.571034] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 35.580365] Call Trace: [ 35.582937] dump_stack+0x244/0x39d [ 35.586548] ? dump_stack_print_info.cold.1+0x20/0x20 [ 35.591722] ? vprintk_func+0x85/0x181 [ 35.595594] debug_check_no_locks_held.cold.49+0x93/0x9f [ 35.601029] flush_old_exec+0x1ea2/0x2480 [ 35.605201] ? save_stack+0x43/0xd0 [ 35.608824] ? __kmalloc+0x15b/0x760 [ 35.612562] ? copy_strings_kernel+0x110/0x110 [ 35.617174] ? ext4_file_read_iter+0x193/0x3c0 [ 35.621743] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 35.627276] ? __vfs_read+0x11f/0x9b0 [ 35.631059] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.636581] ? fsnotify+0x50e/0xef0 [ 35.640196] ? fsnotify+0xef0/0xef0 [ 35.643806] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.649333] ? fsnotify_first_mark+0x350/0x350 [ 35.653895] ? __fsnotify_parent+0xcc/0x430 [ 35.658197] ? fsnotify+0xef0/0xef0 [ 35.661809] ? rw_verify_area+0x118/0x360 [ 35.665961] ? vfs_read+0x1ce/0x3c0 [ 35.669574] ? kernel_read+0xab/0x120 [ 35.673395] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 35.678393] ? load_elf_phdrs+0x1e4/0x270 [ 35.682525] ? writenote+0x3d0/0x3d0 [ 35.686248] ? __kasan_slab_free+0x119/0x150 [ 35.690653] load_elf_binary+0xa9a/0x5cf0 [ 35.694797] ? find_held_lock+0x36/0x1c0 [ 35.698848] ? notesize.isra.6+0x80/0x80 [ 35.702891] ? ima_file_mmap+0x160/0x160 [ 35.706933] ? lock_downgrade+0x900/0x900 [ 35.711064] ? kasan_check_write+0x14/0x20 [ 35.715532] search_binary_handler+0x17d/0x570 [ 35.720102] __do_execve_file.isra.33+0x1661/0x25d0 [ 35.725100] ? prepare_bprm_creds+0x120/0x120 [ 35.729588] ? usercopy_warn+0x110/0x110 [ 35.733636] ? check_preemption_disabled+0x48/0x280 [ 35.738638] ? rcu_lockdep_current_cpu_online+0x1a4/0x210 [ 35.744159] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 35.749681] ? strncpy_from_user+0x411/0x5a0 [ 35.754077] ? digsig_verify+0x1530/0x1530 [ 35.758292] ? kmem_cache_alloc+0x33a/0x730 [ 35.762599] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 35.767165] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 35.772688] __ia32_compat_sys_execveat+0xf3/0x140 [ 35.777604] do_fast_syscall_32+0x34d/0xfb2 [ 35.781907] ? do_int80_syscall_32+0x890/0x890 [ 35.786476] ? entry_SYSENTER_compat+0x68/0x7f [ 35.791041] ? trace_hardirqs_off_caller+0xbb/0x310 [ 35.796038] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.800864] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.805685] ? trace_hardirqs_on_caller+0x310/0x310 [ 35.810686] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 35.815681] ? prepare_exit_to_usermode+0x291/0x3b0 [ 35.820679] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 35.825506] entry_SYSENTER_compat+0x70/0x7f [ 35.829895] RIP: 0023:0xf7f3aa29 [ 35.833245] Code: 85 d2 74 02 89 0a 5b 5d c3 8b 04 24 c3 8b 14 24 c3 8b 3c 24 c3 90 90 90 90 90 90 90 90 90 90 90 90 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 [ 35.852126] RSP: 002b:00000000f7f3614c EFLAGS: 00000296 ORIG_RAX: 0000000000000166 [ 35.859813] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000000 [ 35.867064] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000001000 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program [ 35.874316] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 [ 35.881964] R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 [ 35.889236] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program executing program