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| author |   Dan Aloni <dan@kernelim.com> | 2020-10-02 22:33:43 +0300 |
|---|---|---|
| committer |   Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-10-30 10:38:22 +0100 |
| commit | 95e7b4ee3d35c8d2bca4ad3c3365abdea0bbb71d (patch) | |
| tree | d453f5ce61dece962add37661cf90f07386c3725 /net/sunrpc | |
| parent | f649e6f9d6164f33b559de6613218b12881581c4 (diff) | |
| download | linux-yocto-95e7b4ee3d35c8d2bca4ad3c3365abdea0bbb71d.tar.gz | |
svcrdma: fix bounce buffers for unaligned offsets and multiple pages
[ 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>
Diffstat (limited to 'net/sunrpc')
| -rw-r--r-- | net/sunrpc/xprtrdma/svc_rdma_sendto.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/net/sunrpc/xprtrdma/svc_rdma_sendto.c b/net/sunrpc/xprtrdma/svc_rdma_sendto.c index aa4d19a780d7..4062cd624b26 100644 --- a/net/sunrpc/xprtrdma/svc_rdma_sendto.c +++ b/net/sunrpc/xprtrdma/svc_rdma_sendto.c @@ -639,10 +639,11 @@ 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++; } } |