Date: Wed, 23 Oct 2013 09:39:37 GMT From: Grzegorz <kostka.grzegorz@gmail.com> To: freebsd-gnats-submit@FreeBSD.org Subject: misc/183230: ext2fs hash function incompatible with linux Message-ID: <201310230939.r9N9dbgC015488@oldred.freebsd.org> Resent-Message-ID: <201310230940.r9N9e5wE089096@freefall.freebsd.org>
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>Number: 183230 >Category: misc >Synopsis: ext2fs hash function incompatible with linux >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed Oct 23 09:40:05 UTC 2013 >Closed-Date: >Last-Modified: >Originator: Grzegorz >Release: 9 >Organization: . >Environment: . >Description: Hi, probably I found a bug. Half md4 hash output value is assigned to hash and hash_minor. Linux fsck reports problems (HTREE max value is wrong) on ext partition with a lot directory entries. FreeBSD implementation: http://fxr.watson.org/fxr/source/fs/ext2fs/ext2_hash.c?v=FREEBSD9#L242 Linux implementation: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/fs/ext3/hash.c Look EXT2_HTREE_HALF_MD4: FreeBSD: major = hash[0]; minor = hash[1]; Linux: minor_hash = buf[2]; hash = buf[1]; >How-To-Repeat: >Fix: >Release-Note: >Audit-Trail: >Unformatted:
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