Fix by returning -EINVAL instead of 0, per man page of copy_file_range,
when the requested range extends beyond the end of the source file.
Probem was discovered by subtest inter11 of nfstest_ssc.
Signed-off-by: Dai Ngo <[email protected]>
---
fs/read_write.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/read_write.c b/fs/read_write.c
index 75f764b43418..438c00910716 100644
--- a/fs/read_write.c
+++ b/fs/read_write.c
@@ -1445,7 +1445,7 @@ static int generic_copy_file_checks(struct file *file_in, loff_t pos_in,
/* Shorten the copy to EOF */
size_in = i_size_read(inode_in);
if (pos_in >= size_in)
- count = 0;
+ count = -EINVAL;
else
count = min(count, size_in - (uint64_t)pos_in);
--
2.9.5