From 54930dfeb46e978b447af0fb8ab4e181c1bf9d7a Mon Sep 17 00:00:00 2001 From: Jeff Mahoney Date: Thu, 22 Jun 2017 16:35:04 -0400 Subject: reiserfs: don't preallocate blocks for extended attributes Most extended attributes will fit in a single block. More importantly, we drop the reference to the inode while holding the transaction open so the preallocated blocks aren't released. As a result, the inode may be evicted before it's removed from the transaction's prealloc list which can cause memory corruption. Signed-off-by: Jeff Mahoney Signed-off-by: Jan Kara --- fs/reiserfs/bitmap.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'fs/reiserfs') diff --git a/fs/reiserfs/bitmap.c b/fs/reiserfs/bitmap.c index dc198bc64c61..a6f39fe2b664 100644 --- a/fs/reiserfs/bitmap.c +++ b/fs/reiserfs/bitmap.c @@ -1128,7 +1128,7 @@ static int determine_prealloc_size(reiserfs_blocknr_hint_t * hint) hint->prealloc_size = 0; if (!hint->formatted_node && hint->preallocate) { - if (S_ISREG(hint->inode->i_mode) + if (S_ISREG(hint->inode->i_mode) && !IS_PRIVATE(hint->inode) && hint->inode->i_size >= REISERFS_SB(hint->th->t_super)->s_alloc_options. preallocmin * hint->inode->i_sb->s_blocksize) -- cgit