This is a note to let you know that I've just added the patch titled
ext4: fix oops when loading block bitmap failed
to the 3.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
ext4-fix-oops-when-loading-block-bitmap-failed.patch
and it can be found in the queue-3.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From 599a9b77ab289d85c2d5c8607624efbe1f552b0f Mon Sep 17 00:00:00 2001
From: Jan Kara <jack@xxxxxxx>
Date: Thu, 30 Oct 2014 10:53:16 -0400
Subject: ext4: fix oops when loading block bitmap failed
From: Jan Kara <jack@xxxxxxx>
commit 599a9b77ab289d85c2d5c8607624efbe1f552b0f upstream.
When we fail to load block bitmap in __ext4_new_inode() we will
dereference NULL pointer in ext4_journal_get_write_access(). So check
for error from ext4_read_block_bitmap().
Coverity-id: 989065
Signed-off-by: Jan Kara <jack@xxxxxxx>
Signed-off-by: Theodore Ts'o <tytso@xxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
fs/ext4/ialloc.c | 4 ++++
1 file changed, 4 insertions(+)
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -793,6 +793,10 @@ got:
struct buffer_head *block_bitmap_bh;
block_bitmap_bh = ext4_read_block_bitmap(sb, group);
+ if (!block_bitmap_bh) {
+ err = -EIO;
+ goto out;
+ }
BUFFER_TRACE(block_bitmap_bh, "get block bitmap access");
err = ext4_journal_get_write_access(handle, block_bitmap_bh);
if (err) {
Patches currently in stable-queue which might be from jack@xxxxxxx are
queue-3.10/evm-check-xattr-value-length-and-type-in-evm_inode_setxattr.patch
queue-3.10/ext4-don-t-check-quota-format-when-there-are-no-quota-files.patch
queue-3.10/ext4-fix-oops-when-loading-block-bitmap-failed.patch
queue-3.10/vfs-fix-data-corruption-when-blocksize-pagesize-for-mmaped-data.patch
queue-3.10/ext4-fix-overflow-when-updating-superblock-backups-after-resize.patch
queue-3.10/ext4-grab-missed-write_count-for-ext4_ioc_swap_boot.patch
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