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>
[Jaegeuk Kim: relocate the condition as suggested by Chao]
Signed-off-by: Jaegeuk Kim <jaeg...@kernel.org>
---
fs/f2fs/file.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 9f0ea3d..5cde363 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -353,6 +353,8 @@ static loff_t f2fs_llseek(struct file *file, loff_t offset,
int whence)
maxbytes, i_size_read(inode));
case SEEK_DATA:
case SEEK_HOLE:
+ if (offset < 0)
+ return -ENXIO;
return f2fs_seek_block(file, offset, whence);
}
--
1.8.5.2 (Apple Git-48)
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