From 2e11e376bf8c26498fb1e5678b533f44902bb530 Mon Sep 17 00:00:00 2001 From: Tiger Yang Date: Thu, 15 May 2008 02:45:18 +0000 Subject: [PATCH] ext3/4: fix uninitialized bs in ext3/4_xattr_set_handle() commit 7e01c8e5420b6c7f9d85d34c15d8c7a15c9fc720 upstream This fix the uninitialized bs when we try to replace a xattr entry in ibody with the new value which require more than free space. This situation only happens we format ext3/4 with inode size more than 128 and we have put xattr entries both in ibody and block. The consequences about this bug is we will lost the xattr block which pointed by i_file_acl with all xattr entires in it. We will alloc a new xattr block and put that large value entry in it. The old xattr block will become orphan block. Signed-off-by: Tiger Yang Cc: Cc: Andreas Gruenbacher Acked-by: Andreas Dilger Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman Signed-off-by: Chris Wright --- fs/ext3/xattr.c | 5 +++++ fs/ext4/xattr.c | 5 +++++ 2 files changed, 10 insertions(+) diff --git a/fs/ext3/xattr.c b/fs/ext3/xattr.c index 42856541e9a5a..84119afe17a60 100644 --- a/fs/ext3/xattr.c +++ b/fs/ext3/xattr.c @@ -1000,6 +1000,11 @@ ext3_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index, i.value = NULL; error = ext3_xattr_block_set(handle, inode, &i, &bs); } else if (error == -ENOSPC) { + if (EXT3_I(inode)->i_file_acl && !bs.s.base) { + error = ext3_xattr_block_find(inode, &i, &bs); + if (error) + goto cleanup; + } error = ext3_xattr_block_set(handle, inode, &i, &bs); if (error) goto cleanup; diff --git a/fs/ext4/xattr.c b/fs/ext4/xattr.c index e9054c1c7d936..70d856badabf5 100644 --- a/fs/ext4/xattr.c +++ b/fs/ext4/xattr.c @@ -1011,6 +1011,11 @@ ext4_xattr_set_handle(handle_t *handle, struct inode *inode, int name_index, i.value = NULL; error = ext4_xattr_block_set(handle, inode, &i, &bs); } else if (error == -ENOSPC) { + if (EXT4_I(inode)->i_file_acl && !bs.s.base) { + error = ext4_xattr_block_find(inode, &i, &bs); + if (error) + goto cleanup; + } error = ext4_xattr_block_set(handle, inode, &i, &bs); if (error) goto cleanup; -- 2.47.2