Bug #337246 http://launchpad.net/bugs/337246 "kernel bug corrupts filesystem on heavy parallel I/O"
Upstream has received a patch that fixes this issue via http://bugzilla.kernel.org/show_bug.cgi?id=12821 I've confirmed it applies cleanly to Jaunty. Please cherry-pick commit 395a87bfefbc400011417e9eaae33169f9f036c0 Author: Eric Sandeen <[email protected]> Date: Tue Mar 10 18:18:47 2009 -0400 ext4: fix header check in ext4_ext_search_right() for deep extent trees. The ext4_ext_search_right() function is confusing; it uses a "depth" variable which is 0 at the root and maximum at the leaves, but the on-disk metadata uses a "depth" (actually eh_depth) which is opposite: maximum at the root, and 0 at the leaves. The ext4_ext_check_header() function is given a depth and checks the header agaisnt that depth; it expects the on-disk semantics, but we are giving it the opposite in the while loop in this function. We should be giving it the on-disk notion of "depth" which we can get from (p_depth - depth) - and if you look, the last (more commonly hit) call to ext4_ext_check_header() does just this. Sending in the wrong depth results in (incorrect) messages about corruption: EXT4-fs error (device sdb1): ext4_ext_search_right: bad header in inode #2621457: unexpected eh_depth - magic f30a, entries 340, max 340(0), depth 1(2) http://bugzilla.kernel.org/show_bug.cgi?id=12821 Reported-by: David Dindorp <[email protected]> Signed-off-by: Eric Sandeen <[email protected]> Signed-off-by: "Theodore Ts'o" <[email protected]> Committed via bug #346194 ** Changed in: linux (Ubuntu) Assignee: TJ (intuitivenipple) => (unassigned) Status: In Progress => Fix Committed Target: None => ubuntu-9.04-beta -- kernel bug corrupts filesystem on heavy parallel I/O https://bugs.launchpad.net/bugs/337246 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
