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crypto: pcrypt - Call crypto layer directly when padata_do_parallel() return -EBUSY

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BugLink: https://bugs.launchpad.net/bugs/2101915

[ Upstream commit 662f2f13e66d3883b9238b0b96b17886179e60e2 ]

Since commit 8f4f68e788 ("crypto: pcrypt - Fix hungtask for
PADATA_RESET"), the pcrypt encryption and decryption operations return
-EAGAIN when the CPU goes online or offline. In alg_test(), a WARN is
generated when pcrypt_aead_decrypt() or pcrypt_aead_encrypt() returns
-EAGAIN, the unnecessary panic will occur when panic_on_warn set 1.
Fix this issue by calling crypto layer directly without parallelization
in that case.

Fixes: 8f4f68e788 ("crypto: pcrypt - Fix hungtask for PADATA_RESET")
Signed-off-by: Yi Yang <yiyang13@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Sasha Levin <sashal@kernel.org>
CVE-2024-56690
Signed-off-by: Koichiro Den <koichiro.den@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Yi Yang
2025-03-11 08:51:19 +09:00
committed by Stefan Bader
parent 63dc55f710
commit 8d5b2edfbf
1 changed files with 8 additions and 4 deletions
Download Patch File Download Diff File Expand all files Collapse all files
crypto/pcrypt.c
+8 -4
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@@ -117,8 +117,10 @@ static int pcrypt_aead_encrypt(struct aead_request *req)
err = padata_do_parallel(ictx->psenc, padata, &ctx->cb_cpu);
if (!err)
return -EINPROGRESS;
if (err == -EBUSY)
return -EAGAIN;
if (err == -EBUSY) {
/* try non-parallel mode */
return crypto_aead_encrypt(creq);
}
return err;
}
@@ -166,8 +168,10 @@ static int pcrypt_aead_decrypt(struct aead_request *req)
err = padata_do_parallel(ictx->psdec, padata, &ctx->cb_cpu);
if (!err)
return -EINPROGRESS;
if (err == -EBUSY)
return -EAGAIN;
if (err == -EBUSY) {
/* try non-parallel mode */
return crypto_aead_decrypt(creq);
}
return err;
}