net: tls: fix device-offloaded sendpage straddling records
[ Upstream commite539a105f9
] Adrien reports that incorrect data is transmitted when a single page straddles multiple records. We would transmit the same data in all iterations of the loop. Reported-by: Adrien Moulin <amoulin@corp.free.fr> Link: https://lore.kernel.org/all/61481278.42813558.1677845235112.JavaMail.zimbra@corp.free.fr Fixes:c1318b39c7
("tls: Add opt-in zerocopy mode of sendfile()") Tested-by: Adrien Moulin <amoulin@corp.free.fr> Reviewed-by: Tariq Toukan <tariqt@nvidia.com> Acked-by: Maxim Mikityanskiy <maxtram95@gmail.com> Link: https://lore.kernel.org/r/20230304192610.3818098-1-kuba@kernel.org Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -508,6 +508,8 @@ handle_error:
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zc_pfrag.offset = iter_offset.offset;
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zc_pfrag.offset = iter_offset.offset;
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zc_pfrag.size = copy;
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zc_pfrag.size = copy;
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tls_append_frag(record, &zc_pfrag, copy);
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tls_append_frag(record, &zc_pfrag, copy);
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iter_offset.offset += copy;
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} else if (copy) {
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} else if (copy) {
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copy = min_t(size_t, copy, pfrag->size - pfrag->offset);
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copy = min_t(size_t, copy, pfrag->size - pfrag->offset);
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