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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>
This commit is contained in:
Namjae Jeon 2012-12-22 12:09:43 +09:00 committed by Jaegeuk Kim
parent 029cd28c1f
commit 06025f4df8
1 changed files with 3 additions and 0 deletions
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3
fs/f2fs/recovery.c
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@ -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);
}