If cq_entries is smaller than sq_entries, it will cause a lot of overflow
to appear. when customizing cq_entries, at least let him be no smaller than
sq_entries.
Fixes: 95d8765bd9f2 ("io_uring: allow application controlled CQ ring size")
Signed-off-by: Jackie Liu <liuyu...@kylinos.cn>
---
fs/io_uring.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/fs/io_uring.c b/fs/io_uring.c
index b64cd2c..dfa9731 100644
--- a/fs/io_uring.c
+++ b/fs/io_uring.c
@@ -3784,7 +3784,7 @@ static int io_uring_create(unsigned entries, struct
io_uring_params *p)
* to a power-of-two, if it isn't already. We do NOT impose
* any cq vs sq ring sizing.
*/
- if (!p->cq_entries || p->cq_entries > IORING_MAX_CQ_ENTRIES)
+ if (p->cq_entries < p->sq_entries || p->cq_entries >
IORING_MAX_CQ_ENTRIES)
return -EINVAL;
p->cq_entries = roundup_pow_of_two(p->cq_entries);
} else {
--
2.7.4
