The patch titled
Subject: reiserfs: prevent NULL pointer dereference in reiserfs_insert_item()
has been added to the -mm tree. Its filename is
reiserfs-prevent-null-pointer-dereference-in-reiserfs_insert_item.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/reiserfs-prevent-null-pointer-dereference-in-reiserfs_insert_item.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/reiserfs-prevent-null-pointer-dereference-in-reiserfs_insert_item.patch
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------------------------------------------------------
From: Yunfeng Ye <yeyunfeng@xxxxxxxxxx>
Subject: reiserfs: prevent NULL pointer dereference in reiserfs_insert_item()
The variable inode may be NULL in reiserfs_insert_item(), but there is
no check before accessing the member of inode.
Fix this by adding NULL pointer check before calling reiserfs_debug().
Link: http://lkml.kernel.org/r/79c5135d-ff25-1cc9-4e99-9f572b88cc00@xxxxxxxxxx
Signed-off-by: Yunfeng Ye <yeyunfeng@xxxxxxxxxx>
Cc: zhengbin <zhengbin13@xxxxxxxxxx>
Cc: Hu Shiyuan <hushiyuan@xxxxxxxxxx>
Cc: Feilong Lin <linfeilong@xxxxxxxxxx>
Cc: Jan Kara <jack@xxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/reiserfs/stree.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
--- a/fs/reiserfs/stree.c~reiserfs-prevent-null-pointer-dereference-in-reiserfs_insert_item
+++ a/fs/reiserfs/stree.c
@@ -2246,7 +2246,8 @@ error_out:
/* also releases the path */
unfix_nodes(&s_ins_balance);
#ifdef REISERQUOTA_DEBUG
- reiserfs_debug(th->t_super, REISERFS_DEBUG_CODE,
+ if (inode)
+ reiserfs_debug(th->t_super, REISERFS_DEBUG_CODE,
"reiserquota insert_item(): freeing %u id=%u type=%c",
quota_bytes, inode->i_uid, head2type(ih));
#endif
_
Patches currently in -mm which might be from yeyunfeng@xxxxxxxxxx are
reiserfs-prevent-null-pointer-dereference-in-reiserfs_insert_item.patch
