The patch titled
reiserfs: possible null pointer dereference during resize
has been removed from the -mm tree. Its filename was
reiserfs-possible-null-pointer-dereference-during-resize.patch
This patch was dropped because it was merged into mainline or a subsystem tree
------------------------------------------------------
Subject: reiserfs: possible null pointer dereference during resize
From: Dmitriy Monakhov <dmonakhov@xxxxx>
sb_read may return NULL, let's explicitly check it. If so free new bitmap
blocks array, after this we may safely exit as it done above during bitmap
allocation.
Signed-off-by: Dmitriy Monakhov <dmonakhov@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/reiserfs/resize.c | 4 ++++
1 file changed, 4 insertions(+)
diff -puN fs/reiserfs/resize.c~reiserfs-possible-null-pointer-dereference-during-resize fs/reiserfs/resize.c
--- a/fs/reiserfs/resize.c~reiserfs-possible-null-pointer-dereference-during-resize
+++ a/fs/reiserfs/resize.c
@@ -131,6 +131,10 @@ int reiserfs_resize(struct super_block *
/* don't use read_bitmap_block since it will cache
* the uninitialized bitmap */
bh = sb_bread(s, i * s->s_blocksize * 8);
+ if (!bh) {
+ vfree(bitmap);
+ return -EIO;
+ }
memset(bh->b_data, 0, sb_blocksize(sb));
reiserfs_test_and_set_le_bit(0, bh->b_data);
reiserfs_cache_bitmap_metadata(s, bh, bitmap + i);
_
Patches currently in -mm which might be from dmonakhov@xxxxx are
origin.patch
-
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