linux-ext4 - Re: ext4 fails on ext2 filesystems

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:	Tue, 20 Jan 2009 09:51:00 -0500
From:	Theodore Tso <tytso@....edu>
To:	Jörg Sommer <joerg@...a.gnuu.de>
Cc:	linux-ext4@...r.kernel.org
Subject: Re: ext4 fails on ext2 filesystems

On Sun, Jan 18, 2009 at 11:04:59AM +0100, Jörg Sommer wrote:
> > > [  203.082300] EXT4 FS on hda3, no journal
> > > [  205.746713] EXT4-fs error (device hda3): ext4_free_data: circular indirect block detected, inode=165056, block=184476
> > > 

Hi, this patch should fix your problem.

						- Ted

commit bf3baec2b4529dcf47ee422a48b8c0e83df7f0a0
Author: Theodore Ts'o <tytso@....edu>
Date:   Tue Jan 20 09:50:19 2009 -0500

    ext4: Fix ext4_free_blocks() w/o a journal when files have indirect blocks
    
    When trying to unlink a file with indirect blocks on a filesystem
    without a journal, the "circular indirect block" sanity test was
    getting falsely triggered.
    
    Signed-off-by: "Theodore Ts'o" <tytso@....edu>

diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 49484ba..b4386da 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3622,7 +3622,7 @@ static void ext4_free_data(handle_t *handle, struct inode *inode,
 		 * block pointed to itself, it would have been detached when
 		 * the block was cleared. Check for this instead of OOPSing.
 		 */
-		if (bh2jh(this_bh))
+		if ((EXT4_JOURNAL(inode) == NULL) || bh2jh(this_bh))
 			ext4_handle_dirty_metadata(handle, inode, this_bh);
 		else
 			ext4_error(inode->i_sb, __func__,
--
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