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keys: use kmalloc_flex in user_preparse

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Use kmalloc_flex() when allocating a new struct user_key_payload in
user_preparse() to replace the open-coded size arithmetic and to keep
the size type-safe.

Signed-off-by: Thorsten Blum <thorsten.blum@linux.dev>
Link: https://lore.kernel.org/r/20260504093058.49720-3-thorsten.blum@linux.dev
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
This commit is contained in:
Thorsten Blum 2026-05-04 11:31:00 +02:00 committed by Jarkko Sakkinen
parent 4d05e948ce
commit 8f2e22cfc4
1 changed files with 1 additions and 1 deletions
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2
security/keys/user_defined.c
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@ -64,7 +64,7 @@ int user_preparse(struct key_preparsed_payload *prep)
if (datalen == 0 || datalen > 32767 || !prep->data)
return -EINVAL;
upayload = kmalloc(sizeof(*upayload) + datalen, GFP_KERNEL);
upayload = kmalloc_flex(*upayload, data, datalen);
if (!upayload)
return -ENOMEM;