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crypto: inside-secure/eip93 - acquire lock on eip93_put_descriptor hash

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In the EIP93 HASH functions, the eip93_put_descriptor is called without
acquiring lock. This is problematic when multiple thread execute hash
operations.

Correctly acquire ring write lock on calling eip93_put_descriptor to
prevent concurrent access and mess with the ring pointers.

Fixes: 9739f5f93b ("crypto: eip93 - Add Inside Secure SafeXcel EIP-93 crypto engine support")
Reported-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Christian Marangi <ansuelsmth@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Christian Marangi
2025-04-01 13:57:30 +02:00
committed by Herbert Xu
parent 9764d5b0cd
commit 12e0b15b19
1 changed files with 2 additions and 1 deletions
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3
drivers/crypto/inside-secure/eip93/eip93-hash.c
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@@ -260,7 +260,8 @@ static int eip93_send_hash_req(struct crypto_async_request *async, u8 *data,
}
again:
ret = eip93_put_descriptor(eip93, &cdesc);
scoped_guard(spinlock_irqsave, &eip93->ring->write_lock)
ret = eip93_put_descriptor(eip93, &cdesc);
if (ret) {
usleep_range(EIP93_RING_BUSY_DELAY,
EIP93_RING_BUSY_DELAY * 2);