quoted

The kfree() function was called in up to two cases by the
__virtio_crypto_akcipher_do_req() function during error handling
even if the passed variable contained a null pointer.
This issue was detected by using the Coccinelle software.

If the script is short and simple would you mind, in the future,
including it below the fold -- this may help others do similar work down
the line -- Or …

Would you like to take another look at the clarification approach
“Reconsidering kfree() calls for null pointers (with SmPL)”?
https://lore.kernel.org/cocci/6cbcf640-55e5-2f11-4a09-716fe681c0d2@web.de/ (local)
https://sympa.inria.fr/sympa/arc/cocci/2023-03/msg00096.html

Regards,
Markus