linux-kernel - Re: [dm-devel] [PATCH] dm-kcopyd: Correctly free requests

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Date:	Fri, 26 Aug 2011 11:43:37 +0100
From:	Alasdair G Kergon <agk@...hat.com>
To:	dm-devel@...hat.com
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [dm-devel] [PATCH] dm-kcopyd: Correctly free requests

On Fri, Aug 26, 2011 at 11:37:47AM +0100, Alasdair G Kergon wrote:
> On Fri, Aug 26, 2011 at 12:15:42PM +0200, Bastian Blank wrote:
> > kcopyd only frees the requests if the master job information is set up
> > correctly, but it was not in the recently added path. This leads to many
> > unfreed slabs during snapshot usage.
> Referring to commit c6ea41fbbe08f270a8edef99dc369faf809d1bd6
>   dm kcopyd: preallocate sub jobs to avoid deadlock
> which added the master_job field.
 
and commit a6e50b409d3f9e0833e69c3c9cca822e8fa4adbb
    dm snapshot: skip reading origin when overwriting complete chunk
which indeed forgets to set the new field.

I'll submit the patch shortly, together with some other minor fixes
sitting in linux-next.

Alasdair

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/