git: af28d08bda99 - releng/13.2 - carp: carp_master_down_locked() requires net epoch

The branch releng/13.2 has been updated by zlei:

URL: https://cgit.FreeBSD.org/src/commit/?id=af28d08bda99d7a841743f75d736cf677ab0ad0e

commit af28d08bda99d7a841743f75d736cf677ab0ad0e
Author:     Zhenlei Huang <zlei@FreeBSD.org>
AuthorDate: 2023-03-16 10:00:13 +0000
Commit:     Zhenlei Huang <zlei@FreeBSD.org>
CommitDate: 2023-03-22 15:46:43 +0000

    carp: carp_master_down_locked() requires net epoch
    
    Reviewed by:    kp
    Approved by:    re (gjb)
    Fixes:          1d126e9b9474 carp: Widen epoch coverage
    MFC after:      1 day
    Differential Revision:  https://reviews.freebsd.org/D39113
    
    (cherry picked from commit 49cad3daf2a3abe8270f71ee5b15b8990a19529d)
    (cherry picked from commit c15ceae9e7f98f7e74ff7848b3aff7176c7e263a)
---
 sys/netinet/ip_carp.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sys/netinet/ip_carp.c b/sys/netinet/ip_carp.c
index e84a85ebc11e..b6326b14c802 100644
--- a/sys/netinet/ip_carp.c
+++ b/sys/netinet/ip_carp.c
@@ -1732,6 +1732,7 @@ carp_carprcp(struct carpreq *carpr, struct carp_softc *sc, int priv)
 int
 carp_ioctl(struct ifreq *ifr, u_long cmd, struct thread *td)
 {
+	struct epoch_tracker et;
 	struct carpreq carpr;
 	struct ifnet *ifp;
 	struct carp_softc *sc = NULL;
@@ -1816,8 +1817,10 @@ carp_ioctl(struct ifreq *ifr, u_long cmd, struct thread *td)
 				carp_delroute(sc);
 				break;
 			case MASTER:
+				NET_EPOCH_ENTER(et);
 				carp_master_down_locked(sc,
 				    "user requested via ifconfig");
+				NET_EPOCH_EXIT(et);
 				break;
 			default:
 				break;