[info] Using makefile-style concurrent boot in runlevel 2. [ 24.495819] audit: type=1800 audit(1543163442.573:21): pid=5820 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 res=0 [ 24.522137] audit: type=1800 audit(1543163442.583:22): pid=5820 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 '10.128.10.55' (ECDSA) to the list of known hosts. executing program syzkaller login: [ 36.705340] [ 36.707304] ==================================== [ 36.712507] WARNING: syz-executor113/5978 still has locks held! [ 36.718590] 4.20.0-rc3+ #348 Not tainted [ 36.722733] ------------------------------------ [ 36.727469] 1 lock held by syz-executor113/5978: [ 36.732253] #0: 000000008d188041 (&sig->cred_guard_mutex){+.+.}, at: prepare_bprm_creds+0x53/0x120 [ 36.741650] [ 36.741650] stack backtrace: [ 36.746132] CPU: 0 PID: 5978 Comm: syz-executor113 Not tainted 4.20.0-rc3+ #348 [ 36.753555] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 36.762886] Call Trace: [ 36.765459] dump_stack+0x244/0x39d [ 36.769078] ? dump_stack_print_info.cold.1+0x20/0x20 [ 36.774251] ? vprintk_func+0x85/0x181 [ 36.778124] debug_check_no_locks_held.cold.49+0x93/0x9f [ 36.783738] flush_old_exec+0x1ea2/0x2480 [ 36.787870] ? save_stack+0x43/0xd0 [ 36.791512] ? __kmalloc+0x15b/0x760 [ 36.795211] ? copy_strings_kernel+0x110/0x110 [ 36.799775] ? iov_iter_init+0xe5/0x210 [ 36.803729] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 36.809241] ? __vfs_read+0x11f/0x9b0 [ 36.813020] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 36.818902] ? fsnotify+0x50e/0xef0 [ 36.822521] ? fsnotify+0xef0/0xef0 [ 36.826127] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 36.831643] ? fsnotify_first_mark+0x350/0x350 [ 36.836204] ? __fsnotify_parent+0xcc/0x430 [ 36.840505] ? fsnotify+0xef0/0xef0 [ 36.844112] ? rw_verify_area+0x118/0x360 [ 36.848244] ? vfs_read+0x1ce/0x3c0 [ 36.851852] ? kernel_read+0xab/0x120 [ 36.855633] ? __sanitizer_cov_trace_cmp4+0x16/0x20 [ 36.860628] ? load_elf_phdrs+0x1cd/0x260 [ 36.864758] ? writenote+0x3d0/0x3d0 [ 36.868469] ? refcount_inc_not_zero_checked+0x2f0/0x2f0 [ 36.873912] load_elf_binary+0xa39/0x5620 [ 36.878039] ? find_held_lock+0x36/0x1c0 [ 36.882083] ? notesize.isra.6+0x80/0x80 [ 36.886117] ? ima_file_mmap+0x160/0x160 [ 36.890153] ? lock_downgrade+0x900/0x900 [ 36.894375] ? kasan_check_write+0x14/0x20 [ 36.898587] search_binary_handler+0x17d/0x570 [ 36.903146] __do_execve_file.isra.33+0x1661/0x25d0 [ 36.908150] ? prepare_bprm_creds+0x120/0x120 [ 36.912623] ? usercopy_warn+0x110/0x110 [ 36.916665] ? check_preemption_disabled+0x48/0x280 [ 36.921660] ? rcu_lockdep_current_cpu_online+0x1a4/0x210 [ 36.927546] ? __sanitizer_cov_trace_const_cmp8+0x18/0x20 [ 36.933067] ? strncpy_from_user+0x411/0x5a0 [ 36.937458] ? digsig_verify+0x1530/0x1530 [ 36.941678] ? kmem_cache_alloc+0x33a/0x730 [ 36.946095] ? lockdep_hardirqs_on+0x3bb/0x5b0 [ 36.950659] ? __sanitizer_cov_trace_const_cmp4+0x16/0x20 [ 36.956178] __x64_sys_execveat+0xed/0x130 [ 36.960393] do_syscall_64+0x1b9/0x820 [ 36.964261] ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe [ 36.969604] ? syscall_return_slowpath+0x5e0/0x5e0 [ 36.974513] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.979333] ? trace_hardirqs_on_caller+0x310/0x310 [ 36.984332] ? prepare_exit_to_usermode+0x3b0/0x3b0 [ 36.989334] ? prepare_exit_to_usermode+0x291/0x3b0 [ 36.994333] ? trace_hardirqs_off_thunk+0x1a/0x1c [ 36.999158] entry_SYSCALL_64_after_hwframe+0x49/0xbe [ 37.004322] RIP: 0033:0x4457d9 [ 37.007493] Code: e8 6c b6 02 00 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 2b 12 fc ff c3 66 2e 0f 1f 84 00 00 00 00 [ 37.026386] RSP: 002b:00007f4dc4dfadb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000142 [ 37.034344] RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 00000000004457d9 [ 37.041603] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003 [ 37.048848] RBP: 00000000006dac20 R08: 0000000000001000 R09: 0000000000000000 [ 37.056