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Subject[PATCH] s390/zcrypt: Fix a size determination in zcrypt_unlocked_ioctl()
Date
With new ioctl(ZCRYPT_PERDEV_REQCNT) introduced, kernel use dynamic
allocation for the 256 element array of unsigned integers for the number
of successfully completed requests per device. It's not a static array of
64 elements any more.

Fixes: af4a72276d49 ("s390/zcrypt: Support up to 256 crypto adapters.")
Signed-off-by: Zhenzhong Duan <zhenzhong.duan@gmail.com>
---
drivers/s390/crypto/zcrypt_api.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/s390/crypto/zcrypt_api.c b/drivers/s390/crypto/zcrypt_api.c
index 4dbbfd88262c..5c3f3f89e2f3 100644
--- a/drivers/s390/crypto/zcrypt_api.c
+++ b/drivers/s390/crypto/zcrypt_api.c
@@ -1449,7 +1449,7 @@ static long zcrypt_unlocked_ioctl(struct file *filp, unsigned int cmd,
if (!reqcnt)
return -ENOMEM;
zcrypt_perdev_reqcnt(reqcnt, AP_DEVICES);
- if (copy_to_user((int __user *) arg, reqcnt, sizeof(reqcnt)))
+ if (copy_to_user((int __user *) arg, reqcnt, sizeof(u32) * AP_DEVICES))
rc = -EFAULT;
kfree(reqcnt);
return rc;
--
2.25.1
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