Hi Tommi,
This patch should resolve this bug.
Thanks a lot. :)
>From ee24677b9917583f50f16b6f59771439f91b890c Mon Sep 17 00:00:00 2001
From: Jaegeuk Kim <jaeg...@kernel.org>
Date: Mon, 8 Sep 2014 10:59:43 -0700
Subject: [PATCH] f2fs: fix negative value for lseek offset
If application throws negative value of lseek with SEEK_DATA|SEEK_HOLE,
previous f2fs went into BUG_ON in get_dnode_of_data, which was reported
by Tommi Rantala.
He could make a simple code to detect this having:
lseek(fd, -17595150933902LL, SEEK_DATA);
This patch should resolve that bug.
Reported-by: Tommi Rentala <tt.rant...@gmail.com>
Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org>
---
fs/f2fs/file.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 9f0ea3d..c9a1295 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -281,7 +281,7 @@ static loff_t f2fs_seek_block(struct file *file, loff_t
offset, int whence)
mutex_lock(&inode->i_mutex);
isize = i_size_read(inode);
- if (offset >= isize)
+ if (offset >= isize || offset < 0)
goto fail;
/* handle inline data case */
--
1.8.5.2 (Apple Git-48)
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