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Date: Thu, 21 Dec 2006 13:11:01 -0600 From: Eric Sandeen <sandeen@...hat.com> To: Randy Dunlap <randy.dunlap@...cle.com> CC: Linux Kernel Mailing List <linux-kernel@...r.kernel.org>, ext4 development <linux-ext4@...r.kernel.org> Subject: Re: [PATCH] ext2: skip pages past number of blocks in ext2_find_entry Randy Dunlap wrote: > Please don't hide the goto; un-indent 1 tab stop. Whoops, thanks Randy - it wasn't intentional. :) Signed-off-by: Eric Sandeen <sandeen@...hat.com> Index: linux-2.6.19/fs/ext2/dir.c =================================================================== --- linux-2.6.19.orig/fs/ext2/dir.c +++ linux-2.6.19/fs/ext2/dir.c @@ -368,6 +368,14 @@ struct ext2_dir_entry_2 * ext2_find_entr } if (++n >= npages) n = 0; + /* next page is past the blocks we've got */ + if (unlikely(n > (dir->i_blocks >> (PAGE_CACHE_SHIFT - 9)))) { + ext2_error(dir->i_sb, __FUNCTION__, + "dir %lu size %lld exceeds block count %llu", + dir->i_ino, dir->i_size, + (unsigned long long)dir->i_blocks); + goto out; + } } while (n != start); out: return NULL; - 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
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