[CRIU] [PATCH 0/1] report fd/path if dump_one_reg_file()->lookup_nsid_by_mnt_id() fails

[Pavel Emelyanov]

On 04/21/2015 08:14 PM, Oleg Nesterov wrote:
> On 04/21, Pavel Emelyanov wrote:
>>
>> This is just to make sure I properly track what's going on with mount.c :)
> 
> A bit off-topic, but let me remind about another problem before I forgot...
> 
> 	# unshare -m
> 	# perl -e 'sleep'
> 
> Now "criu dump -t `pidof perl`" fails with
> 
> 	Error (files-reg.c:821): Unable to look up the 22 mount
> 	Error (cr-dump.c:1580): Dump files (pid: 10822) failed with -1
> 
> So there are 2 problems:
> 
> 	1. The error message is confusing and doesn't help to understand
> 	   whats going on.
> 
> 	   "Fixed" by this patch.

Thank you :)

> 	2. Well, it would be nice to handle this case too.

But what's the case? Why the 22nd mount isn't looked-up?

> 	   Left as an exercise for criu developers.

-- Pavel