svn commit: r363590 - head/sys/net

[Matt Macy]

Author: mmacy
Date: Mon Jul 27 01:17:59 2020
New Revision: 363590
URL: https://svnweb.freebsd.org/changeset/base/363590

Log:
  iflib: fix LOR with bpf detach
  
  Reported by:	grehan@
  Approved by:	grehan@
  MFC after:	1 week
  Sponsored by:	Netgate
  Differential Revision: https://reviews.freebsd.org/D25530

Modified:
  head/sys/net/iflib.c

Modified: head/sys/net/iflib.c
==============================================================================
--- head/sys/net/iflib.c	Mon Jul 27 00:26:54 2020	(r363589)
+++ head/sys/net/iflib.c	Mon Jul 27 01:17:59 2020	(r363590)
@@ -4192,7 +4192,9 @@ iflib_if_ioctl(if_t ifp, u_long command, caddr_t data)
 			if (if_getdrvflags(ifp) & IFF_DRV_RUNNING) {
 				if ((if_getflags(ifp) ^ ctx->ifc_if_flags) &
 				    (IFF_PROMISC | IFF_ALLMULTI)) {
+					CTX_UNLOCK(ctx);
 					err = IFDI_PROMISC_SET(ctx, if_getflags(ifp));
+					CTX_LOCK(ctx);
 				}
 			} else
 				reinit = 1;