[info] Using makefile-style concurrent boot in runlevel 2.
[   27.234617] audit: type=1800 audit(1543342159.991:21): pid=5847 uid=0 auid=4294967295 ses=4294967295 subj==unconfined op=collect_data cause=failed(directio) comm="startpar" name="bootlogs" dev="sda1" ino=2419 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 '10.128.15.206' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   46.918597] 
[   46.920514] ====================================
[   46.925253] WARNING: syz-executor977/6003 still has locks held!
[   46.931360] 4.20.0-rc4+ #352 Not tainted
[   46.935427] ------------------------------------
[   46.940236] 1 lock held by syz-executor977/6003:
[   46.944985]  #0: 00000000ec56f0a2 (&sig->cred_guard_mutex){+.+.}, at: prepare_bprm_creds+0x53/0x120
[   46.954308] 
[   46.954308] stack backtrace:
[   46.958833] CPU: 1 PID: 6003 Comm: syz-executor977 Not tainted 4.20.0-rc4+ #352
[   46.966261] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   46.975594] Call Trace:
[   46.978169]  dump_stack+0x244/0x39d
[   46.981781]  ? dump_stack_print_info.cold.1+0x20/0x20
[   46.986965]  ? vprintk_func+0x85/0x181
[   46.990844]  debug_check_no_locks_held.cold.49+0x93/0x9f
[   46.996394]  flush_old_exec+0x1ea2/0x2480
[   47.000537]  ? save_stack+0x43/0xd0
[   47.004148]  ? __kmalloc+0x15b/0x760
[   47.007854]  ? copy_strings_kernel+0x110/0x110
[   47.012455]  ? iov_iter_init+0xe5/0x210
[   47.016515]  ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[   47.022037]  ? __vfs_read+0x11f/0x9b0
[   47.025826]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   47.031362]  ? fsnotify+0x50e/0xef0
[   47.035007]  ? fsnotify+0xef0/0xef0
[   47.038614]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   47.044131]  ? fsnotify_first_mark+0x350/0x350
[   47.048814]  ? __fsnotify_parent+0xcc/0x430
[   47.053134]  ? fsnotify+0xef0/0xef0
[   47.056753]  ? rw_verify_area+0x118/0x360
[   47.060881]  ? vfs_read+0x1ce/0x3c0
[   47.064491]  ? kernel_read+0xab/0x120
[   47.068274]  ? __sanitizer_cov_trace_cmp4+0x16/0x20
[   47.073269]  ? load_elf_phdrs+0x1e4/0x270
[   47.077410]  ? writenote+0x3d0/0x3d0
[   47.081239]  ? __kasan_slab_free+0x119/0x150
[   47.085743]  load_elf_binary+0xa9a/0x5cf0
[   47.089879]  ? find_held_lock+0x36/0x1c0
[   47.094070]  ? notesize.isra.6+0x80/0x80
[   47.098133]  ? ima_file_mmap+0x160/0x160
[   47.102239]  ? lock_downgrade+0x900/0x900
[   47.106479]  ? kasan_check_write+0x14/0x20
[   47.110702]  search_binary_handler+0x17d/0x570
[   47.115271]  __do_execve_file.isra.33+0x1661/0x25d0
[   47.120272]  ? prepare_bprm_creds+0x120/0x120
[   47.124765]  ? usercopy_warn+0x110/0x110
[   47.128933]  ? check_preemption_disabled+0x48/0x280
[   47.133936]  ? rcu_lockdep_current_cpu_online+0x1a4/0x210
[   47.139459]  ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[   47.144978]  ? strncpy_from_user+0x411/0x5a0
[   47.149398]  ? digsig_verify+0x1530/0x1530
[   47.153725]  ? kmem_cache_alloc+0x33a/0x730
[   47.158030]  ? lockdep_hardirqs_on+0x3bb/0x5b0
[   47.162603]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   47.168135]  __x64_sys_execveat+0xed/0x130
[   47.172365]  do_syscall_64+0x1b9/0x820
[   47.176241]  ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe
[   47.181598]  ? syscall_return_slowpath+0x5e0/0x5e0
[   47.186743]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   47.191585]  ? trace_hardirqs_on_caller+0x310/0x310
[   47.196586]  ? prepare_exit_to_usermode+0x3b0/0x3b0
[   47.201916]  ? prepare_exit_to_usermode+0x291/0x3b0
[   47.206916]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   47.211759]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   47.216926] RIP: 0033:0x445629
[   47.220100] 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
[   47.238985] RSP: 002b:00007fefd7134da8 EFLAGS: 00000246 ORIG_RAX: 0000000000000142
[   47.246672] RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 0000000000445629
[   47.253920] RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000003
[   47.261186] RBP: 00000000006dac20 R08: 0000000000001000 R09: 0000000000000000
[   47.268441] R10: 00