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Btrfs: don't null pointer deref on abort

Message ID 1368034277-5016-1-git-send-email-jbacik@fusionio.com (mailing list archive)
State New, archived
Headers show

Commit Message

Josef Bacik May 8, 2013, 5:31 p.m. UTC 
I'm sorry, theres no excuse for this sort of work.  We need to use
root->leafsize since eb may be NULL.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
---
 fs/btrfs/disk-io.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
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Patch

diff --git a/fs/btrfs/disk-io.c b/fs/btrfs/disk-io.c
index e8b5027..19d7e63 100644
--- a/fs/btrfs/disk-io.c
+++ b/fs/btrfs/disk-io.c
@@ -3752,7 +3752,7 @@  static int btrfs_destroy_marked_extents(struct btrfs_root *root,
 		while (start <= end) {
 			eb = btrfs_find_tree_block(root, start,
 						   root->leafsize);
-			start += eb->len;
+			start += root->leafsize;
 			if (!eb)
 				continue;
 			wait_on_extent_buffer_writeback(eb);