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crypto: hisilicon: Wipe entire pool on error
[ Upstream commit aa85923a95
]
To work around a Clang __builtin_object_size bug that shows up under
CONFIG_FORTIFY_SOURCE and UBSAN_BOUNDS, move the per-loop-iteration
mem_block wipe into a single wipe of the entire pool structure after
the loop.
Reported-by: Nathan Chancellor <nathan@kernel.org>
Link: https://github.com/ClangBuiltLinux/linux/issues/1780
Cc: Weili Qian <qianweili@huawei.com>
Cc: Zhou Wang <wangzhou1@hisilicon.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: linux-crypto@vger.kernel.org
Signed-off-by: Kees Cook <keescook@chromium.org>
Tested-by: Nathan Chancellor <nathan@kernel.org> # build
Link: https://lore.kernel.org/r/20230106041945.never.831-kees@kernel.org
Signed-off-by: Sasha Levin <sashal@kernel.org>
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1 changed files with 1 additions and 2 deletions
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@ -124,9 +124,8 @@ struct hisi_acc_sgl_pool *hisi_acc_create_sgl_pool(struct device *dev,
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for (j = 0; j < i; j++) {
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dma_free_coherent(dev, block_size, block[j].sgl,
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block[j].sgl_dma);
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memset(block + j, 0, sizeof(*block));
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}
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kfree(pool);
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kfree_sensitive(pool);
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return ERR_PTR(-ENOMEM);
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}
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EXPORT_SYMBOL_GPL(hisi_acc_create_sgl_pool);
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