linux-kernel - Re: XFS Bug null pointer dereference in xfs_free_ag

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>] [day] [month] [year] [list]

Date:	Tue, 8 Aug 2006 13:30:05 +1000
From:	Nathan Scott <nathans@....com>
To:	Joe Jin <lkmaillist@...il.com>, "Tony.Ho" <linux@...center.cn>,
	jdi@....org, Chris Seufert <seufert@...il.com>
Cc:	xfs@....sgi.com, linux-kernel@...r.kernel.org
Subject: Re: XFS Bug null pointer dereference in xfs_free_ag_extent

On Tue, Aug 01, 2006 at 09:49:12AM +0800, Joe Jin wrote:
> >From the information, I think it caused by (args.agbp == NULL).
> get rid of, we'll find the call trace should panic:
> xfs_free_extent
> |_   xfs_free_ag_extent  => here args.agbp= NULL;
>         |_ xfs_btree_init_cursor()
>               |_ agf = XFS_BUF_TO_AGF(agbp);  => (xfs_agf_t
> *)XFS_BUF_PTR(arbp)
>                              |_ (xfs_caddr_t)((agbp)->b_addr) : but here,
> agbp is NULL
> so it caused the oops.

You've all reported this same issue - could any/all of you
try the patch here...
http://oss.sgi.com/archives/xfs/2006-08/msg00054.html

Let me know if that fixes it.  In particular, if you were able
to easily reproduce this before, I'd like to hear whether this
resolves things, as I've still not hit the bug myself.

cheers.

-- 
Nathan
-
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/