Commit 06025f4d authored Dec 22, 2012 by Namjae Jeon Committed by Jaegeuk Kim Dec 28, 2012

f2fs: handle error from f2fs_iget_nowait

In case f2fs_iget_nowait returns error, it results in truncate_hole being
called with 'error' value as inode pointer. There is no check in truncate_hole
for valid inode, so it could result in crash due "invalid access to memory".
Avoid this by handling error condition properly.

Signed-off-by: Namjae Jeon <namjae.jeon@samsung.com>
Signed-off-by: Amit Sahrawat <a.sahrawat@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>

parent 029cd28c

fs/f2fs/recovery.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -228,6 +228,9 @@ static void check_index_in_prev_nodes(struct f2fs_sb_info *sbi,

		/* Deallocate previous index in the node page */
		inode = f2fs_iget_nowait(sbi->sb, ino);
		if (IS_ERR(inode))
		return;

		truncate_hole(inode, bidx, bidx + 1);
		iput(inode);
		}

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