TITLE: WARNING: still has locks held in prepare_bprm_creds
TYPE: LOCKDEP

[   40.588118] ====================================
[   40.592858] WARNING: syz-executor286/6054 still has locks held!
[   40.599288] 4.20.0-rc5+ #141 Not tainted
[   40.603345] ------------------------------------
[   40.608177] 1 lock held by syz-executor286/6054:
[   40.612959]  #0: 000000009ccdb9e0 (&sig->cred_guard_mutex){+.+.}, at: prepare_bprm_creds+0x53/0x120
[   40.622176] 
[   40.622176] stack backtrace:
[   40.626781] CPU: 0 PID: 6054 Comm: syz-executor286 Not tainted 4.20.0-rc5+ #141
[   40.634221] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   40.643559] Call Trace:
[   40.646140]  dump_stack+0x244/0x39d
[   40.658840]  debug_check_no_locks_held.cold.49+0x93/0x9f
[   40.664291]  flush_old_exec+0x1ea2/0x2480
[   40.753368]  load_elf_binary+0xa9a/0x5cf0
[   40.778064]  search_binary_handler+0x17d/0x570
[   40.782638]  __do_execve_file.isra.33+0x1661/0x25d0
[   40.835388]  __x64_sys_execveat+0xed/0x130
[   40.839619]  do_syscall_64+0x1b9/0x820
[   40.878500]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   40.883678] RIP: 0033:0x445789
[   40.886862] 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
[   40.905750] RSP: 002b:00007f30e3e86db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000142
[   40.913446] RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 0000000000445789
[   40.920707] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003
[   40.927988] RBP: 00000000006dac20 R08: 0000000000001000 R09: 0000000000000000
[   40.935246] R10: 0000000000000
