Warning: Permanently added '10.128.0.116' (ECDSA) to the list of known hosts.
executing program
syzkaller login: [   34.131529] 
[   34.133354] ====================================
[   34.138091] WARNING: syz-executor139/6034 still has locks held!
[   34.144205] 4.20.0-rc3+ #348 Not tainted
[   34.148254] ------------------------------------
[   34.152989] 1 lock held by syz-executor139/6034:
[   34.157765]  #0: 00000000b9ce779b (&sig->cred_guard_mutex){+.+.}, at: prepare_bprm_creds+0x53/0x120
[   34.167068] 
[   34.167068] stack backtrace:
[   34.171581] CPU: 1 PID: 6034 Comm: syz-executor139 Not tainted 4.20.0-rc3+ #348
[   34.179013] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
[   34.188348] Call Trace:
[   34.190919]  dump_stack+0x244/0x39d
[   34.194533]  ? dump_stack_print_info.cold.1+0x20/0x20
[   34.199703]  ? vprintk_func+0x85/0x181
[   34.203676]  debug_check_no_locks_held.cold.49+0x93/0x9f
[   34.209111]  flush_old_exec+0x1ea2/0x2480
[   34.213238]  ? save_stack+0x43/0xd0
[   34.216840]  ? __kmalloc+0x15b/0x760
[   34.220533]  ? copy_strings_kernel+0x110/0x110
[   34.225097]  ? iov_iter_init+0xe5/0x210
[   34.229059]  ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[   34.234598]  ? __vfs_read+0x11f/0x9b0
[   34.238380]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   34.243896]  ? fsnotify+0x50e/0xef0
[   34.247504]  ? fsnotify+0xef0/0xef0
[   34.251114]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   34.256635]  ? fsnotify_first_mark+0x350/0x350
[   34.261195]  ? __fsnotify_parent+0xcc/0x430
[   34.265495]  ? fsnotify+0xef0/0xef0
[   34.269110]  ? rw_verify_area+0x118/0x360
[   34.273239]  ? vfs_read+0x1ce/0x3c0
[   34.276849]  ? kernel_read+0xab/0x120
[   34.280632]  ? __sanitizer_cov_trace_cmp4+0x16/0x20
[   34.285850]  ? load_elf_phdrs+0x1cd/0x260
[   34.289975]  ? writenote+0x3d0/0x3d0
[   34.293670]  ? refcount_inc_not_zero_checked+0x2f0/0x2f0
[   34.299104]  load_elf_binary+0xa39/0x5620
[   34.303234]  ? find_held_lock+0x36/0x1c0
[   34.307282]  ? notesize.isra.6+0x80/0x80
[   34.311323]  ? ima_file_mmap+0x160/0x160
[   34.315365]  ? lock_downgrade+0x900/0x900
[   34.319497]  ? kasan_check_write+0x14/0x20
[   34.323711]  search_binary_handler+0x17d/0x570
[   34.328278]  __do_execve_file.isra.33+0x1661/0x25d0
[   34.333291]  ? prepare_bprm_creds+0x120/0x120
[   34.337783]  ? usercopy_warn+0x110/0x110
[   34.341845]  ? check_preemption_disabled+0x48/0x280
[   34.346933]  ? rcu_lockdep_current_cpu_online+0x1a4/0x210
[   34.352454]  ? __sanitizer_cov_trace_const_cmp8+0x18/0x20
[   34.357971]  ? strncpy_from_user+0x411/0x5a0
[   34.362360]  ? digsig_verify+0x1530/0x1530
[   34.366639]  ? kmem_cache_alloc+0x33a/0x730
[   34.370949]  ? lockdep_hardirqs_on+0x3bb/0x5b0
[   34.375514]  ? __sanitizer_cov_trace_const_cmp4+0x16/0x20
[   34.381032]  __x64_sys_execveat+0xed/0x130
[   34.385249]  do_syscall_64+0x1b9/0x820
[   34.389119]  ? entry_SYSCALL_64_after_hwframe+0x3e/0xbe
[   34.394646]  ? syscall_return_slowpath+0x5e0/0x5e0
[   34.399553]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   34.404396]  ? trace_hardirqs_on_caller+0x310/0x310
[   34.409416]  ? prepare_exit_to_usermode+0x3b0/0x3b0
[   34.414417]  ? prepare_exit_to_usermode+0x291/0x3b0
[   34.419415]  ? trace_hardirqs_off_thunk+0x1a/0x1c
[   34.424253]  entry_SYSCALL_64_after_hwframe+0x49/0xbe
[   34.429422] RIP: 0033:0x4457d9
[   34.432596] 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
[   34.451703] RSP: 002b:00007f5b8870bdb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000142
[   34.459388] RAX: ffffffffffffffda RBX: 00000000006dac28 RCX: 00000000004457d9
[   34.466634] RDX: 0000000000000000 RSI: 0000000020000000 RDI: 0000000000000003
[   34.473880] RBP: 00000000006dac20 R08: 0000000000001000 R09: 0000000000000000
[   34.481142] R10: 000000