[info] Using makefile-style concurrent boot in runlevel 2.
[   26.643415] audit: type=1800 audit(1543610962.545:21): pid=5889 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 '10.128.0.60' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   39.125246] 
[   39.126920] ====================================
[   39.131658] WARNING: syz-executor774/6045 still has locks held!
[   39.137737] 4.20.0-rc4+ #259 Not tainted
[   39.141792] ------------------------------------
[   39.146793] 1 lock held by syz-executor774/6045:
[   39.151539]  #0: 000000000c7d50c1 (&sig->cred_guard_mutex){+.+.}, at: prepare_bprm_creds+0x53/0x120
[   39.160761] 
[   39.160761] stack backtrace:
[   39.165281] CPU: 1 PID: 6045 Comm: syz-executor774 Not tainted 4.20.0-rc4+ #259
[   39.172719] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   39.182051] Call Trace:
[   39.184635]  dump_stack+0x244/0x39d
[   39.188251]  ? dump_stack_print_info.cold.1+0x20/0x20
[   39.193428]  ? vprintk_func+0x85/0x181
[   39.197301]  debug_check_no_locks_held.cold.49+0x93/0x9f
[   39.202757]  flush_old_exec+0x1ea2/0x2480
[   39.206906]  ? save_stack+0x43/0xd0
[   39.210513]  ? __kmalloc+0x15b/0x760
[   39.214211]  ? copy_strings_kernel+0x110/0x110
[   39.218776]  ? iov_iter_init+0xe5/0x210
[   39.222735]  ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[   39.228258]  ? __vfs_read+0x11f/0x9b0
[   39.232041]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   39.237563]  ? fsnotify+0x50e/0xef0
[   39.241173]  ? fsnotify+0xef0/0xef0
[   39.244805]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   39.250363]  ? fsnotify_first_mark+0x350/0x350
[   39.254933]  ? __fsnotify_parent+0xcc/0x430
[   39.259237]  ? fsnotify+0xef0/0xef0
[   39.262849]  ? rw_verify_area+0x118/0x360
[   39.266983]  ? vfs_read+0x1ce/0x3c0
[   39.270613]  ? kernel_read+0xab/0x120
[   39.274400]  ? __sanitizer_cov_trace_cmp4+0x16/0x20
[   39.279400]  ? load_elf_phdrs+0x1cd/0x260
[   39.283534]  ? writenote+0x3d0/0x3d0
[   39.287235]  ? refcount_inc_not_zero_checked+0x2f0/0x2f0
[   39.292668]  load_elf_binary+0xa39/0x5620
[   39.296803]  ? find_held_lock+0x36/0x1c0
[   39.300870]  ? notesize.isra.6+0x80/0x80
[   39.304914]  ? ima_file_mmap+0x160/0x160
[   39.308957]  ? lock_downgrade+0x900/0x900
[   39.313105]  ? kasan_check_write+0x14/0x20
[   39.317334]  search_binary_handler+0x17d/0x570
[   39.321904]  __do_execve_file.isra.33+0x1661/0x25d0
[   39.326912]  ? prepare_bprm_creds+0x120/0x120
[   39.331412]  ? usercopy_warn+0x110/0x110
[   39.335478]  ? check_preemption_disabled+0x48/0x280
[   39.340483]  ? rcu_lockdep_current_cpu_online+0x1a4/0x210
[   39.346006]  ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[   39.351529]  ? strncpy_from_user+0x411/0x5a0
[   39.355924]  ? digsig_verify+0x1530/0x1530
[   39.360141]  ? kmem_cache_alloc+0x33a/0x730
[   39.364463]  ? lockdep_hardirqs_on+0x3bb/0x5b0
[   39.369043]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   39.374570]  __ia32_compat_sys_execveat+0xf3/0x140
[   39.379489]  do_fast_syscall_32+0x34d/0xfb2
[   39.383795]  ? do_int80_syscall_32+0x890/0x890
[   39.388364]  ? entry_SYSENTER_compat+0x68/0x7f
[   39.392931]  ? trace_hardirqs_off_caller+0xbb/0x310
[   39.397931]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   39.402756]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   39.407583]  ? trace_hardirqs_on_caller+0x310/0x310
[   39.412581]  ? prepare_exit_to_usermode+0x3b0/0x3b0
[   39.417582]  ? prepare_exit_to_usermode+0x291/0x3b0
[   39.422585]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   39.427433]  entry_SYSENTER_compat+0x70/0x7f
[   39.431829] RIP: 0023:0xf7fc7a29
[   39.435181] 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
[   39.454065] RSP: 002b:00000000f7fc31ec EFLAGS: 00000296 ORIG_RAX: 0000000000000166
[   39.461772] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 0000000020000000
[   39.469028] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000001000
[   39