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
| ||
|
Message-ID: <20130214190555.GA6641@thunk.org> Date: Thu, 14 Feb 2013 14:05:55 -0500 From: Theodore Ts'o <tytso@....edu> To: Jan Kara <jack@...e.cz> Cc: Dmitry Monakhov <dmonakhov@...nvz.org>, linux-ext4@...r.kernel.org Subject: Re: REGRESSION: [PATCH 04/12] ext4: Disable merging of uninitialized extents On Thu, Feb 14, 2013 at 05:11:16PM +0100, Jan Kara wrote: > OK, so I've debugged this. It wasn't actually that hard. The problem is > that mpage_da_map_and_submit() prepares extent with e.g. 256 blocks but > later we submit a shorter bio e.g. because it cannot carry that many pages. > So ->end_io is called only for first 128 blocks or so. I spotted this > problem already before, just it didn't come up when Ted sent me this bug > report. So can we get a corruption without these patches, but it was a lot harder to hit that case before? - Ted -- To unsubscribe from this list: send the line "unsubscribe linux-ext4" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Powered by blists - more mailing lists