Module Name: src
Committed By: knakahara
Date: Mon Mar 26 02:30:08 UTC 2018
Modified Files:
src/sys/arch/x86/x86: intr.c
Log Message:
Fix "intrctl list" causes panic while attaching MSI/MSI-X devices.
When there are devices which is already pci_intr_alloc'ed, however is not
established yet, "intrctl list" causes panic. E.g.
# while true; do intrctl list > /dev/null ; done&
# drvctl -d ixg0 && drvctl -r pci0
And add some KASSERTMSG to similar but not the same code.
Pointed out by msaitoh@n.o.
XXX pullup-8
To generate a diff of this commit:
cvs rdiff -u -r1.123 -r1.124 src/sys/arch/x86/x86/intr.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/x86/x86/intr.c
diff -u src/sys/arch/x86/x86/intr.c:1.123 src/sys/arch/x86/x86/intr.c:1.124
--- src/sys/arch/x86/x86/intr.c:1.123 Sat Feb 17 18:51:53 2018
+++ src/sys/arch/x86/x86/intr.c Mon Mar 26 02:30:08 2018
@@ -1,4 +1,4 @@
-/* $NetBSD: intr.c,v 1.123 2018/02/17 18:51:53 maxv Exp $ */
+/* $NetBSD: intr.c,v 1.124 2018/03/26 02:30:08 knakahara Exp $ */
/*
* Copyright (c) 2007, 2008, 2009 The NetBSD Foundation, Inc.
@@ -133,7 +133,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: intr.c,v 1.123 2018/02/17 18:51:53 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: intr.c,v 1.124 2018/03/26 02:30:08 knakahara Exp $");
#include "opt_intrdebug.h"
#include "opt_multiprocessor.h"
@@ -2012,6 +2012,9 @@ intr_get_affinity(struct intrsource *isp
return;
}
+ KASSERTMSG(isp->is_handlers != NULL,
+ "Don't get affinity for the device which is not established.");
+
ci = isp->is_handlers->ih_cpu;
if (ci == NULL) {
kcpuset_zero(cpuset);
@@ -2064,6 +2067,9 @@ intr_set_affinity(struct intrsource *isp
}
ih = isp->is_handlers;
+ KASSERTMSG(ih != NULL,
+ "Don't set affinity for the device which is not established.");
+
oldci = ih->ih_cpu;
if (newci == oldci) /* nothing to do */
return 0;
@@ -2130,6 +2136,13 @@ intr_is_affinity_intrsource(struct intrs
KASSERT(mutex_owned(&cpu_lock));
+ /*
+ * The device is already pci_intr_alloc'ed, however it is not
+ * established yet.
+ */
+ if (isp->is_handlers == NULL)
+ return false;
+
ci = isp->is_handlers->ih_cpu;
KASSERT(ci != NULL);
