Module: xenomai-3
Branch: wip/rtnet-fixes
Commit: 0042738c31a7c1d286c8f307af4dc0f1301d5dbd
URL:
http://git.xenomai.org/?p=xenomai-3.git;a=commit;h=0042738c31a7c1d286c8f307af4dc0f1301d5dbd
Author: Philippe Gerum <r...@xenomai.org>
Date: Fri Jun 16 18:07:26 2017 +0200
net/cap: fix panic in rtcap_signal_handler()
---
kernel/drivers/net/addons/cap.c | 12 +++++++-----
1 file changed, 7 insertions(+), 5 deletions(-)
diff --git a/kernel/drivers/net/addons/cap.c b/kernel/drivers/net/addons/cap.c
index 7b8f4fe..78d5f56 100644
--- a/kernel/drivers/net/addons/cap.c
+++ b/kernel/drivers/net/addons/cap.c
@@ -195,11 +195,13 @@ static void rtcap_signal_handler(rtdm_nrtsig_t *nrtsig,
void *arg)
ifindex = rtskb->rtdev->ifindex;
active = tap_device[ifindex].present;
- if ((tap_device[ifindex].tap_dev->flags & IFF_UP) == 0)
- active &= ~TAP_DEV;
- if (active & RTMAC_TAP_DEV &&
- !(tap_device[ifindex].rtmac_tap_dev->flags & IFF_UP))
- active &= ~RTMAC_TAP_DEV;
+ if (active) {
+ if ((tap_device[ifindex].tap_dev->flags & IFF_UP) == 0)
+ active &= ~TAP_DEV;
+ if (active & RTMAC_TAP_DEV &&
+ !(tap_device[ifindex].rtmac_tap_dev->flags & IFF_UP))
+ active &= ~RTMAC_TAP_DEV;
+ }
if (active == 0) {
tap_device[ifindex].tap_dev_stats.rx_dropped++;
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