diff options
| author | Thorsten Blum <thorsten.blum@linux.dev> | 2026-02-19 00:54:00 +0100 |
|---|---|---|
| committer | Herbert Xu <herbert@gondor.apana.org.au> | 2026-02-28 12:53:25 +0900 |
| commit | d240b079a37e90af03fd7dfec94930eb6c83936e (patch) | |
| tree | ecc5029240b2ca393ba742c9a15756cd4cc1b014 | |
| parent | 889b0e2721e793eb46cf7d17b965aa3252af3ec8 (diff) | |
crypto: atmel-sha204a - Fix OOM ->tfm_count leak
If memory allocation fails, decrement ->tfm_count to avoid blocking
future reads.
Cc: stable@vger.kernel.org
Fixes: da001fb651b0 ("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>
| -rw-r--r-- | drivers/crypto/atmel-sha204a.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/crypto/atmel-sha204a.c b/drivers/crypto/atmel-sha204a.c index 8adc7fe71c04..98d1023007e3 100644 --- a/drivers/crypto/atmel-sha204a.c +++ b/drivers/crypto/atmel-sha204a.c @@ -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; |