linux-kernel - Re: kernel BUG at mm/truncate.c:475!

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

Date:	Wed, 15 Dec 2010 12:22:10 +0100
From:	Miklos Szeredi <miklos@...redi.hu>
To:	Hugh Dickins <hughd@...gle.com>
CC:	miklos@...redi.hu, akpm@...ux-foundation.org, robert@...ecki.net,
	lkml20101129@...ton.leun.net, linux-kernel@...r.kernel.org,
	linux-mm@...ck.org
Subject: Re: kernel BUG at mm/truncate.c:475!

On Tue, 14 Dec 2010, Hugh Dickins wrote:
> I'd feel rather happier about it if I thought it would also fix
> Robert's kernel BUG at /build/buildd/linux-2.6.35/mm/filemap.c:128!
> but I've still not found time to explain that one.

Me neither, all unmap_mapping_range() calls from shmfs are either with
i_mutex or from evict_inode.

Hmm, is there anything preventing remap_file_pages() installing a pte
at an address that unmap_mapping_range() has already processed?

Thanks,
Miklos
--
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/