linux-ext4 - [PATCH 1/1] only check PR_1_EXTENT_ENDS

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Message-Id: <1207100338-2308-1-git-send-email-sandeen@redhat.com>
Date:	Tue,  1 Apr 2008 20:38:58 -0500
From:	Eric Sandeen <sandeen@...hat.com>
To:	linux-ext4@...r.kernel.org
Cc:	Eric Sandeen <sandeen@...hat.com>
Subject: [PATCH 1/1] only check PR_1_EXTENT_ENDS_BEYOND for leaf nodes

pass1 was checking that an "extent's" start+len did not extend
past the last filesystem block, but unless we are at a leaf
block, the physical block is that of a node in the tree, and
the length may include sparseness.  The test is only valid
for leaf blocks.

Signed-off-by: Eric Sandeen <sandeen@...hat.com>
---
 e2fsck/pass1.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/e2fsck/pass1.c b/e2fsck/pass1.c
index 67a8370..4f21c3f 100644
--- a/e2fsck/pass1.c
+++ b/e2fsck/pass1.c
@@ -1593,7 +1593,8 @@ static void scan_extent_node(e2fsck_t ctx, struct problem_context *pctx,
 		if (extent.e_pblk < ctx->fs->super->s_first_data_block ||
 		    extent.e_pblk >= ctx->fs->super->s_blocks_count)
 			problem = PR_1_EXTENT_BAD_START_BLK;
-		else if ((extent.e_pblk + extent.e_len) >
+		else if (is_leaf &&
+			 (extent.e_pblk + extent.e_len) >
 			 ctx->fs->super->s_blocks_count)
 			problem = PR_1_EXTENT_ENDS_BEYOND;
 
-- 
1.5.4.1

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