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authorDave Kleikamp <dave.kleikamp@oracle.com>2022-01-26 14:32:43 -0600
committerJarkko Sakkinen <jarkko@kernel.org>2022-03-08 13:55:52 +0200
commitc5d1ed846e15090bc90dfdaafc07eac066e070bb (patch)
treef642dfe94775596095ca530a6b14fb7702c00191
parent969a26446bcd142faedfe8c6f41cd7668596c1fa (diff)
KEYS: trusted: Avoid calling null function trusted_key_exit
If one loads and unloads the trusted module, trusted_key_exit can be NULL. Call it through static_call_cond() to avoid a kernel trap. Fixes: 5d0682be3189 ("KEYS: trusted: Add generic trusted keys framework") Signed-off-by: Dave Kleikamp <dave.kleikamp@oracle.com> Cc: Sumit Garg <sumit.garg@linaro.org> Cc: James Bottomley <jejb@linux.ibm.com> Cc: Jarkko Sakkinen <jarkko@kernel.org> Cc: Mimi Zohar <zohar@linux.ibm.com> Cc: David Howells <dhowells@redhat.com> Cc: James Morris <jmorris@namei.org> Cc: "Serge E. Hallyn" <serge@hallyn.com> Cc: linux-integrity@vger.kernel.org Cc: keyrings@vger.kernel.org Cc: linux-security-module@vger.kernel.org Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org> Signed-off-by: Jarkko Sakkinen <jarkko@kernel.org>
-rw-r--r--security/keys/trusted-keys/trusted_core.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/security/keys/trusted-keys/trusted_core.c b/security/keys/trusted-keys/trusted_core.c
index 5b35f1b87644..9b9d3ef79cbe 100644
--- a/security/keys/trusted-keys/trusted_core.c
+++ b/security/keys/trusted-keys/trusted_core.c
@@ -351,7 +351,7 @@ static int __init init_trusted(void)
static void __exit cleanup_trusted(void)
{
- static_call(trusted_key_exit)();
+ static_call_cond(trusted_key_exit)();
}
late_initcall(init_trusted);