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virtiofsd: do_read missing NULL check

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Missing a NULL check if the argument fetch fails.

Fixes: Coverity CID 1413119
Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Dr. David Alan Gilbert 2020-02-03 13:01:19 +00:00
parent 686391112f
commit 99ce9a7e60
1 changed files with 4 additions and 0 deletions
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4
tools/virtiofsd/fuse_lowlevel.c
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@ -1116,6 +1116,10 @@ static void do_read(fuse_req_t req, fuse_ino_t nodeid,
struct fuse_file_info fi; struct fuse_file_info fi;
arg = fuse_mbuf_iter_advance(iter, sizeof(*arg)); arg = fuse_mbuf_iter_advance(iter, sizeof(*arg));
if (!arg) {
fuse_reply_err(req, EINVAL);
return;
}
memset(&fi, 0, sizeof(fi)); memset(&fi, 0, sizeof(fi));
fi.fh = arg->fh; fi.fh = arg->fh;