Commit: 99ce9a7e60fd12b213b985343ff8fcc172de59fd - qemu (git)

Commit MetaInfo

• Révision: 99ce9a7e60fd12b213b985343ff8fcc172de59fd (tree)
• l'heure: 2020-02-11 02:24:43
• Auteur: Dr. David Alan Gilbert <dgilbert@redh...>
• Commiter: Dr. David Alan Gilbert

Message de Log

virtiofsd: do_read missing NULL check

Missing a NULL check if the argument fetch fails.

Fixes: Coverity CID 1413119
Signed-off-by: Dr. David Alan Gilbert <[e-mail]>
Reviewed-by: Philippe Mathieu-Daudé <[e-mail]>
Reviewed-by: Stefan Hajnoczi <[e-mail]>

Change Summary

• modified: tools/virtiofsd/fuse_lowlevel.c

Modification

--- a/tools/virtiofsd/fuse_lowlevel.c
+++ b/tools/virtiofsd/fuse_lowlevel.c
@@ -1116,6 +1116,10 @@ static void do_read(fuse_req_t req, fuse_ino_t nodeid,
         struct fuse_file_info fi;
 
         arg = fuse_mbuf_iter_advance(iter, sizeof(*arg));
+        if (!arg) {
+            fuse_reply_err(req, EINVAL);
+            return;
+        }
 
         memset(&fi, 0, sizeof(fi));
         fi.fh = arg->fh;