s390/pkey: fix missing length of protected key on return
commitaab73d278d
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:efc598e6c8
("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>
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@ -794,7 +794,7 @@ static long pkey_unlocked_ioctl(struct file *filp, unsigned int cmd,
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return -EFAULT;
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rc = cca_sec2protkey(ksp.cardnr, ksp.domain,
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ksp.seckey.seckey, ksp.protkey.protkey,
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NULL, &ksp.protkey.type);
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&ksp.protkey.len, &ksp.protkey.type);
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DEBUG_DBG("%s cca_sec2protkey()=%d\n", __func__, rc);
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if (rc)
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break;
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