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crypto: atmel-sha204a - Fix OOM ->tfm_count leak

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If memory allocation fails, decrement ->tfm_count to avoid blocking
future reads.

Cc: stable@vger.kernel.org
Fixes: da001fb651 ("crypto: atmel-i2c - add support for SHA204A random number generator")
Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Thorsten Blum 2026-02-19 00:54:00 +01:00 • committed by Herbert Xu
parent 889b0e2721
commit d240b079a3
1 changed files with 3 additions and 2 deletions
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5
drivers/crypto/atmel-sha204a.c
View file

@ -52,9 +52,10 @@ static int atmel_sha204a_rng_read_nonblocking(struct hwrng *rng, void *data,
rng->priv = 0;
} else {
work_data = kmalloc_obj(*work_data, GFP_ATOMIC);
if (!work_data)
if (!work_data) {
atomic_dec(&i2c_priv->tfm_count);
return -ENOMEM;
}
work_data->ctx = i2c_priv;
work_data->client = i2c_priv->client;