[PATCH 2/8] char: hpet: fix information leak to userland

[Vasiliy Kulikov]

Structure info is copied to userland with some padding fields unitialized.
It leads to leaking of stack memory.

Signed-off-by: Vasiliy Kulikov <segooon@xxxxxxxxx>
---
 Compile tested.

 drivers/char/hpet.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/char/hpet.c b/drivers/char/hpet.c
index a4eee32..f6722ef 100644
--- a/drivers/char/hpet.c
+++ b/drivers/char/hpet.c
@@ -581,6 +581,7 @@ hpet_ioctl_common(struct hpet_dev *devp, int cmd, unsigned long arg,
 		break;
 	case HPET_INFO:
 		{
+			memset(info, 0, sizeof(*info));
 			if (devp->hd_ireqfreq)
 				info->hi_ireqfreq =
 					hpet_time_div(hpetp, devp->hd_ireqfreq);
-- 
1.7.0.4

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