If there was a short read in the middle of the rdata list, we can end up with a corrupt output buffer.
Signed-off-by: Pavel Shilovsky <[email protected]> --- fs/cifs/file.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/fs/cifs/file.c b/fs/cifs/file.c index f6cb765..2927f02 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -3048,7 +3048,9 @@ again: } else { rc = cifs_readdata_to_iov(rdata, to); } - + /* if there was a short read -- discard anything left */ + if (rdata->got_bytes && rdata->got_bytes < rdata->bytes) + rc = -ENODATA; } list_del_init(&rdata->list); kref_put(&rdata->refcount, cifs_uncached_readdata_release); -- 1.8.1.2 -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
