Date: Tue, 19 Feb 2019 18:22:57 +0000 (UTC) From: Kristof Provost <kp@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r344282 - stable/11/sys/netinet Message-ID: <201902191822.x1JIMv5E015414@repo.freebsd.org>
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Author: kp Date: Tue Feb 19 18:22:57 2019 New Revision: 344282 URL: https://svnweb.freebsd.org/changeset/base/344282 Log: MFC r344061: garp: Fix vnet related panic for gratuitous arp Gratuitous ARP packets are sent from a timer, which means we don't have a vnet context set. As a result we panic trying to send the packet. Set the vnet context based on the interface associated with the interface address. To reproduce: sysctl net.link.ether.inet.garp_rexmit_count=2 ifconfig vtnet1 10.0.0.1/24 up PR: 235699 Reviewed by: vangyzen@ Modified: stable/11/sys/netinet/if_ether.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/netinet/if_ether.c ============================================================================== --- stable/11/sys/netinet/if_ether.c Tue Feb 19 18:22:55 2019 (r344281) +++ stable/11/sys/netinet/if_ether.c Tue Feb 19 18:22:57 2019 (r344282) @@ -1351,6 +1351,8 @@ garp_rexmit(void *arg) return; } + CURVNET_SET(ia->ia_ifa.ifa_ifp->if_vnet); + /* * Drop lock while the ARP request is generated. */ @@ -1378,6 +1380,8 @@ garp_rexmit(void *arg) ifa_free(&ia->ia_ifa); } } + + CURVNET_RESTORE(); } /*
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