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Diffstat (limited to 'fs/io_uring.c')
-rw-r--r--fs/io_uring.c16
1 files changed, 10 insertions, 6 deletions
diff --git a/fs/io_uring.c b/fs/io_uring.c
index 04c6d059ea94..a2e20a6fbfed 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -2477,8 +2477,10 @@ static void io_fallback_req_func(struct work_struct *work)
struct llist_node *node = llist_del_all(&ctx->fallback_llist);
struct io_kiocb *req, *tmp;
+ percpu_ref_get(&ctx->refs);
llist_for_each_entry_safe(req, tmp, node, io_task_work.fallback_node)
req->io_task_work.func(req);
+ percpu_ref_put(&ctx->refs);
}
static void __io_complete_rw(struct io_kiocb *req, long res, long res2,
@@ -9370,9 +9372,10 @@ SYSCALL_DEFINE6(io_uring_enter, unsigned int, fd, u32, to_submit,
if (ctx->flags & IORING_SETUP_SQPOLL) {
io_cqring_overflow_flush(ctx, false);
- ret = -EOWNERDEAD;
- if (unlikely(ctx->sq_data->thread == NULL))
+ if (unlikely(ctx->sq_data->thread == NULL)) {
+ ret = -EOWNERDEAD;
goto out;
+ }
if (flags & IORING_ENTER_SQ_WAKEUP)
wake_up(&ctx->sq_data->wait);
if (flags & IORING_ENTER_SQ_WAIT) {
@@ -9840,10 +9843,11 @@ static int io_register_personality(struct io_ring_ctx *ctx)
ret = xa_alloc_cyclic(&ctx->personalities, &id, (void *)creds,
XA_LIMIT(0, USHRT_MAX), &ctx->pers_next, GFP_KERNEL);
- if (!ret)
- return id;
- put_cred(creds);
- return ret;
+ if (ret < 0) {
+ put_cred(creds);
+ return ret;
+ }
+ return id;
}
static int io_register_restrictions(struct io_ring_ctx *ctx, void __user *arg,