From: Harald Freudenberger freude@linux.ibm.com
commit aab73d278d49c718b722ff5052e16c9cddf144d4 upstream.
The pkey ioctl call PKEY_SEC2PROTK updates a struct pkey_protkey on return. The protected key is stored in, the protected key type is stored in but the len information was not updated. This patch now fixes this and so the len field gets an update to refrect the actual size of the protected key value returned.
Fixes: efc598e6c8a9 ("s390/zcrypt: move cca misc functions to new code file") Cc: Stable stable@vger.kernel.org Signed-off-by: Harald Freudenberger freude@linux.ibm.com Reported-by: Christian Rund RUNDC@de.ibm.com Suggested-by: Ingo Franzki ifranzki@linux.ibm.com Signed-off-by: Vasily Gorbik gor@linux.ibm.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- drivers/s390/crypto/pkey_api.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/s390/crypto/pkey_api.c +++ b/drivers/s390/crypto/pkey_api.c @@ -774,7 +774,7 @@ static long pkey_unlocked_ioctl(struct f return -EFAULT; rc = cca_sec2protkey(ksp.cardnr, ksp.domain, ksp.seckey.seckey, ksp.protkey.protkey, - NULL, &ksp.protkey.type); + &ksp.protkey.len, &ksp.protkey.type); DEBUG_DBG("%s cca_sec2protkey()=%d\n", __func__, rc); if (rc) break;