[dm-devel] [PATCH 3/5] multipathd: add reclear_pp_from_mpp in ev_remove_path

[Martin Wilck]

On Tue, 2020-08-18 at 21:08 +0800, lixiaokeng wrote:
> Add reclear_pp_from_mpp in ev_remove_path to make sure that pp is
> cleared in mpp.
> 
> When multipathd del path xxx, multipathd -v2, multipathd add path xxx
> and multipath -U
> dm-x are executed simultaneously, multipath -U dm-x will case
> coredump.
> 
> The reason is that there are two paths with same dev_t in dm_table.
> The process
> is as follows:

Thanks for the report.

With which code have you tested this? I have reason to believe that 
it would behave differently with my last patch series (in particular,
part V "removed path handling") applied. I'm not sure if my series
would fix the issue, but it would probably need a different fix.

Regards,
Martin