git: 3765afa4dacf - releng/13.0 - Fix panic when destroying interface with ECMP routes.
Alexander V. Chernikov
melifaro at FreeBSD.org
Sun Mar 28 20:50:28 UTC 2021
The branch releng/13.0 has been updated by melifaro:
URL: https://cgit.FreeBSD.org/src/commit/?id=3765afa4dacf5850de984fede7f9b26760efac73
commit 3765afa4dacf5850de984fede7f9b26760efac73
Author: Alexander V. Chernikov <melifaro at FreeBSD.org>
AuthorDate: 2021-03-23 22:00:04 +0000
Commit: Alexander V. Chernikov <melifaro at FreeBSD.org>
CommitDate: 2021-03-28 20:40:48 +0000
Fix panic when destroying interface with ECMP routes.
Reported by: Zhenlei Huang <zlei.huang at gmail.com>
PR: 254496
Approved by: re (gjb)
(cherry picked from commit af85312e8a6f34ea7c8af77b9841fab6b5559e25)
---
sys/net/route/route_ctl.c | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/sys/net/route/route_ctl.c b/sys/net/route/route_ctl.c
index 46e0bcfee6b7..58b89c28f945 100644
--- a/sys/net/route/route_ctl.c
+++ b/sys/net/route/route_ctl.c
@@ -130,16 +130,25 @@ vnet_rtzone_destroy()
static void
destroy_rtentry(struct rtentry *rt)
{
+ struct nhop_object *nh = rt->rt_nhop;
/*
* At this moment rnh, nh_control may be already freed.
* nhop interface may have been migrated to a different vnet.
* Use vnet stored in the nexthop to delete the entry.
*/
- CURVNET_SET(nhop_get_vnet(rt->rt_nhop));
+#ifdef ROUTE_MPATH
+ if (NH_IS_NHGRP(nh)) {
+ struct weightened_nhop *wn;
+ uint32_t num_nhops;
+ wn = nhgrp_get_nhops((struct nhgrp_object *)nh, &num_nhops);
+ nh = wn[0].nh;
+ }
+#endif
+ CURVNET_SET(nhop_get_vnet(nh));
/* Unreference nexthop */
- nhop_free_any(rt->rt_nhop);
+ nhop_free_any(nh);
uma_zfree(V_rtzone, rt);
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