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-rw-r--r--io_uring/kbuf.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/io_uring/kbuf.c b/io_uring/kbuf.c
index e91260a6156b..15e5e6ec5968 100644
--- a/io_uring/kbuf.c
+++ b/io_uring/kbuf.c
@@ -640,7 +640,7 @@ int io_register_pbuf_ring(struct io_ring_ctx *ctx, void __user *arg)
return -ENOMEM;
}
- mmap_offset = reg.bgid << IORING_OFF_PBUF_SHIFT;
+ mmap_offset = (unsigned long)reg.bgid << IORING_OFF_PBUF_SHIFT;
ring_size = flex_array_size(br, bufs, reg.ring_entries);
memset(&rd, 0, sizeof(rd));