Messages in this thread Patch in this message | | | From | Namjae Jeon <> | Subject | [PATCH 2/5] f2fs: handle error from f2fs_iget_nowait | Date | Sat, 22 Dec 2012 12:09:43 +0900 |
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From: Namjae Jeon <namjae.jeon@samsung.com>
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> --- fs/f2fs/recovery.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/fs/f2fs/recovery.c b/fs/f2fs/recovery.c index b07e9b6..632e679 100644 --- a/fs/f2fs/recovery.c +++ b/fs/f2fs/recovery.c @@ -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); } -- 1.7.9.5
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