linux-ext4 - [PATCH V2] fix mballoc oopses on mkdir

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Message-ID: <46D3B1AE.40408@redhat.com>
Date:	Tue, 28 Aug 2007 00:25:02 -0500
From:	Eric Sandeen <sandeen@...hat.com>
To:	ext4 development <linux-ext4@...r.kernel.org>
Subject: [PATCH V2] fix mballoc oopses on mkdir

Ugh. brain clearly not fully engaged... here we go:

------------------

Tried out Ted's git tree + all pending patches today, and 
immediately oopsed on a mkdir thanks to this in 
ext4_mb_new_group_pa()

	BUG_ON(!S_ISREG(ac->ac_inode->i_mode));

(there are 54 BUGs and BUG_ONs in this file...!)

I think something like this patch is needed?

Signed-off-by: Eric Sandeen <sandeen@...hat.com>


Index: ext4.git/fs/ext4/extents.c
===================================================================
--- ext4.git.orig/fs/ext4/extents.c
+++ ext4.git/fs/ext4/extents.c
@@ -2535,7 +2535,10 @@ int ext4_ext_get_blocks(handle_t *handle
 	ar.goal = ext4_ext_find_goal(inode, path, iblock);
 	ar.logical = iblock;
 	ar.len = allocated;
-	ar.flags = EXT4_MB_HINT_DATA;
+	if (S_ISREG(inode->i_mode))
+		ar.flags = EXT4_MB_HINT_DATA;
+	else
+		ar.flags = 0;
 	newblock = ext4_mb_new_blocks(handle, &ar, &err);
 	if (!newblock)
 		goto out2;

-
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