From: Dan Aloni dan@kernelim.com
[ Upstream commit c327a310ec4d6ecbea13185ed56c11def441d9ab ]
This was discovered using O_DIRECT at the client side, with small unaligned file offsets or IOs that span multiple file pages.
Fixes: e248aa7be86 ("svcrdma: Remove max_sge check at connect time") Signed-off-by: Dan Aloni dan@kernelim.com Signed-off-by: J. Bruce Fields bfields@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- net/sunrpc/xprtrdma/svc_rdma_sendto.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/net/sunrpc/xprtrdma/svc_rdma_sendto.c b/net/sunrpc/xprtrdma/svc_rdma_sendto.c index 217106c66a13c..25e8922c10b28 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_sendto.c +++ b/net/sunrpc/xprtrdma/svc_rdma_sendto.c @@ -609,10 +609,11 @@ static int svc_rdma_pull_up_reply_msg(struct svcxprt_rdma *rdma, while (remaining) { len = min_t(u32, PAGE_SIZE - pageoff, remaining);
- memcpy(dst, page_address(*ppages), len); + memcpy(dst, page_address(*ppages) + pageoff, len); remaining -= len; dst += len; pageoff = 0; + ppages++; } }