This is a note to let you know that I've just added the patch titled crypto: hisilicon: Wipe entire pool on error to the 6.2-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: crypto-hisilicon-wipe-entire-pool-on-error.patch and it can be found in the queue-6.2 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. commit 547bc7e3370ad6857835a684d0c45ad33d8af1eb Author: Kees Cook <keescook@xxxxxxxxxxxx> Date: Thu Jan 5 20:19:48 2023 -0800 crypto: hisilicon: Wipe entire pool on error [ Upstream commit aa85923a954e7704bc9d3847dabeb8540aa98d13 ] 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@xxxxxxxxxx> Link: https://github.com/ClangBuiltLinux/linux/issues/1780 Cc: Weili Qian <qianweili@xxxxxxxxxx> Cc: Zhou Wang <wangzhou1@xxxxxxxxxxxxx> Cc: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Cc: "David S. Miller" <davem@xxxxxxxxxxxxx> Cc: linux-crypto@xxxxxxxxxxxxxxx Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx> Tested-by: Nathan Chancellor <nathan@xxxxxxxxxx> # build Link: https://lore.kernel.org/r/20230106041945.never.831-kees@xxxxxxxxxx Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> diff --git a/drivers/crypto/hisilicon/sgl.c b/drivers/crypto/hisilicon/sgl.c index 2b6f2281cfd6c..0974b00414050 100644 --- a/drivers/crypto/hisilicon/sgl.c +++ b/drivers/crypto/hisilicon/sgl.c @@ -124,9 +124,8 @@ struct hisi_acc_sgl_pool *hisi_acc_create_sgl_pool(struct device *dev, for (j = 0; j < i; j++) { dma_free_coherent(dev, block_size, block[j].sgl, block[j].sgl_dma); - memset(block + j, 0, sizeof(*block)); } - kfree(pool); + kfree_sensitive(pool); return ERR_PTR(-ENOMEM); } EXPORT_SYMBOL_GPL(hisi_acc_create_sgl_pool);