Re: [PATCH v3] crypto: caam: Add check for kcalloc() in test_len()

On Tue, Sep 23, 2025 at 08:44:18PM +0800, Guangshuo Li wrote:

As kcalloc() may fail, check its return value to avoid a NULL pointer dereference when passing the buffer to rng->read(). On allocation failure, log the error and return since test_len() returns void.

Fixes: 2be0d806e25e ("crypto: caam - add a test for the RNG") Cc: stable@vger.kernel.org Signed-off-by: Guangshuo Li lgs201920130244@gmail.com

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changelog: v3:

• Fix build error: test_len() returns void; return without a value.
• No functional changes beyond the allocation failure path.

v2:

• Return on allocation failure to avoid possible NULL dereference.

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drivers/crypto/caam/caamrng.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)

Patch applied. Thanks.