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io_uring/kbuf: Fix check of BID wrapping in provided buffers
[platform/kernel/linux-starfive.git]
/
io_uring
/
kbuf.c
diff --git
a/io_uring/kbuf.c
b/io_uring/kbuf.c
index
9123138
..
74a4f96
100644
(file)
--- a/
io_uring/kbuf.c
+++ b/
io_uring/kbuf.c
@@
-352,7
+352,7
@@
int io_provide_buffers_prep(struct io_kiocb *req, const struct io_uring_sqe *sqe
tmp = READ_ONCE(sqe->off);
if (tmp > USHRT_MAX)
return -E2BIG;
- if (tmp + p->nbufs >
=
USHRT_MAX)
+ if (tmp + p->nbufs > USHRT_MAX)
return -EINVAL;
p->bid = tmp;
return 0;