net: 9p: fix refcount leak in p9_read_work() error handling

p9_req_put need to be called when m->rreq->rc.sdata is NULL to avoid temporary refcount leak. Link: https://lkml.kernel.org/r/[email protected] Fixes: 728356d ("9p: Add refcount to p9_req_t") Signed-off-by: Hangyu Hua <[email protected]> [Dominique: commit wording adjustments, p9_req_put argument fixes for rebase] Signed-off-by: Dominique Martinet <[email protected]>
niw · Jul 15, 2022 · 4ac7573 · 4ac7573
1 parent 67dd8e4
commit 4ac7573
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/net/9p/trans_fd.c b/net/9p/trans_fd.c
@@ -343,6 +343,7 @@ static void p9_read_work(struct work_struct *work)
 			p9_debug(P9_DEBUG_ERROR,
 				 "No recv fcall for tag %d (req %p), disconnecting!\n",
 				 m->rc.tag, m->rreq);
+			p9_req_put(m->client, m->rreq);
 			m->rreq = NULL;
 			err = -EIO;
 			goto error;