Author: emaste
Date: Wed Apr 13 21:00:00 2016
New Revision: 297940
URL: https://svnweb.freebsd.org/changeset/base/297940
Log:
arm64: Avoid null dereference in its_init_cpu
its_init_cpu() is called from gic_v3_init_secondary(), and its_sc will
be NULL if its did not attach.
Sponsored by: The FreeBSD Foundation
Modified:
head/sys/arm64/arm64/gic_v3_its.c
Modified: head/sys/arm64/arm64/gic_v3_its.c
==============================================================================
--- head/sys/arm64/arm64/gic_v3_its.c Wed Apr 13 20:55:05 2016
(r297939)
+++ head/sys/arm64/arm64/gic_v3_its.c Wed Apr 13 21:00:00 2016
(r297940)
@@ -565,7 +565,7 @@ its_init_cpu(struct gic_v3_its_softc *sc
* this function was called during GICv3 secondary initialization.
*/
if (sc == NULL) {
- if (device_is_attached(its_sc->dev)) {
+ if (its_sc != NULL && device_is_attached(its_sc->dev)) {
/*
* XXX ARM64TODO: This is part of the workaround that
* saves ITS software context for further use in
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