fuse: {uring} Handle IO_URING_F_TASK_DEAD

The ring task is terminating, it not safe to still access its resources. Also no need for further actions. Signed-off-by: Bernd Schubert <[email protected]>
bsbernd · Sep 1, 2024 · 332f051 · 332f051
1 parent bed58a6
commit 332f051
Showing 1 changed file with 7 additions and 0 deletions.
diff --git a/fs/fuse/dev_uring.c b/fs/fuse/dev_uring.c
@@ -993,6 +993,9 @@ fuse_uring_send_req_in_task(struct io_uring_cmd *cmd,
 
  BUILD_BUG_ON(sizeof(pdu) > sizeof(cmd->pdu));
 
+ if (unlikely(issue_flags & IO_URING_F_TASK_DEAD))
+ goto terminating;
+
  err = fuse_uring_prepare_send(ring_ent);
  if (err)
  goto err;
@@ -1007,6 +1010,10 @@ fuse_uring_send_req_in_task(struct io_uring_cmd *cmd,
  return;
 err:
  fuse_uring_next_fuse_req(ring_ent, queue);
+
+terminating:
+ /* Avoid all actions as the task that issues the ring is terminating */
+ io_uring_cmd_done(cmd, -ECANCELED, 0, issue_flags);
 }
 
 /* queue a fuse request and send it if a ring entry is available */