Warning: Permanently added '10.128.10.40' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   37.819120] 
[   37.820778] ====================================
[   37.825513] WARNING: syz-executor992/6026 still has locks held!
[   37.831642] 4.20.0-rc4+ #136 Not tainted
[   37.835699] ------------------------------------
[   37.840518] 1 lock held by syz-executor992/6026:
[   37.845277]  #0: 0000000048820a45 (&sig->cred_guard_mutex){+.+.}, at: prepare_bprm_creds+0x53/0x120
[   37.854528] 
[   37.854528] stack backtrace:
[   37.859158] CPU: 1 PID: 6026 Comm: syz-executor992 Not tainted 4.20.0-rc4+ #136
[   37.866593] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   37.875954] Call Trace:
[   37.878526]  dump_stack+0x244/0x39d
[   37.882140]  ? dump_stack_print_info.cold.1+0x20/0x20
[   37.887314]  ? vprintk_func+0x85/0x181
[   37.891204]  debug_check_no_locks_held.cold.49+0x93/0x9f
[   37.896637]  flush_old_exec+0x1ea2/0x2480
[   37.900769]  ? save_stack+0x43/0xd0
[   37.904395]  ? __kmalloc+0x15b/0x760
[   37.908096]  ? copy_strings_kernel+0x110/0x110
[   37.912669]  ? iov_iter_init+0xe5/0x210
[   37.916645]  ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[   37.922196]  ? __vfs_read+0x11f/0x9b0
[   37.925980]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   37.931502]  ? fsnotify+0x50e/0xef0
[   37.935115]  ? fsnotify+0xef0/0xef0
[   37.938739]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   37.944260]  ? fsnotify_first_mark+0x350/0x350
[   37.948826]  ? __fsnotify_parent+0xcc/0x430
[   37.953130]  ? fsnotify+0xef0/0xef0
[   37.956775]  ? rw_verify_area+0x118/0x360
[   37.960907]  ? vfs_read+0x1ce/0x3c0
[   37.964517]  ? kernel_read+0xab/0x120
[   37.968300]  ? __sanitizer_cov_trace_cmp4+0x16/0x20
[   37.973297]  ? load_elf_phdrs+0x1cd/0x260
[   37.977427]  ? writenote+0x3d0/0x3d0
[   37.981136]  ? lock_downgrade+0x900/0x900
[   37.985270]  load_elf_binary+0xa39/0x5620
[   37.989404]  ? find_held_lock+0x36/0x1c0
[   37.993450]  ? notesize.isra.6+0x80/0x80
[   37.997493]  ? ima_file_mmap+0x160/0x160
[   38.001533]  ? lock_downgrade+0x900/0x900
[   38.005663]  ? kasan_check_write+0x14/0x20
[   38.009883]  search_binary_handler+0x17d/0x570
[   38.014445]  __do_execve_file.isra.33+0x1661/0x25d0
[   38.019443]  ? prepare_bprm_creds+0x120/0x120
[   38.023920]  ? usercopy_warn+0x110/0x110
[   38.027965]  ? check_preemption_disabled+0x48/0x280
[   38.032964]  ? rcu_lockdep_current_cpu_online+0x1a4/0x210
[   38.038496]  ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[   38.044013]  ? strncpy_from_user+0x411/0x5a0
[   38.048421]  ? digsig_verify+0x1530/0x1530
[   38.052637]  ? kmem_cache_alloc+0x33a/0x730
[   38.056943]  ? lockdep_hardirqs_on+0x3bb/0x5b0
[   38.061520]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   38.067053]  __x64_sys_execveat+0xed/0x130
[   38.071271]  do_syscall_64+0x1b9/0x820
[   38.075138]  ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe
[   38.080484]  ? syscall_return_slowpath+0x5e0/0x5e0
[   38.085394]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   38.090218]  ? trace_hardirqs_on_caller+0x310/0x310
[   38.095216]  ? prepare_exit_to_usermode+0x3b0/0x3b0
[   38.100215]  ? prepare_exit_to_usermode+0x291/0x3b0
[   38.105215]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   38.110041]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   38.115234] RIP: 0033:0x4456c9
[   38.118441] 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
[   38.137323] RSP: 002b:00007f9678cb1db8 EFLAGS: 00000246 ORIG_RAX: 0000000000000142
[   38.145008] RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 00000000004456c9
[   38.152300] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003
[   38.159581] RBP: 00000000006dac20 R08: 0000000000001000 R09: 0000000000000000
[   38.166829] R10: 0000000000000000 R11: 00