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D29455.1784984974.diff
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Index: sys/amd64/amd64/machdep.c
===================================================================
--- sys/amd64/amd64/machdep.c
+++ sys/amd64/amd64/machdep.c
@@ -58,6 +58,7 @@
#include <sys/param.h>
#include <sys/proc.h>
#include <sys/systm.h>
+#include <sys/asan.h>
#include <sys/bio.h>
#include <sys/buf.h>
#include <sys/bus.h>
@@ -1930,6 +1931,8 @@
#endif
thread0.td_critnest = 0;
+ kasan_init();
+
TSEXIT();
/* Location of kernel stack for locore */
Index: sys/amd64/conf/GENERIC-KASAN
===================================================================
--- /dev/null
+++ sys/amd64/conf/GENERIC-KASAN
@@ -0,0 +1,7 @@
+# $FreeBSD$
+
+include GENERIC
+
+ident GENERIC-KASAN
+
+options KASAN
Index: sys/amd64/conf/GENERIC-KMSAN
===================================================================
--- /dev/null
+++ sys/amd64/conf/GENERIC-KMSAN
@@ -0,0 +1,7 @@
+# $FreeBSD$
+
+include GENERIC
+
+ident GENERIC-KMSAN
+
+options KMSAN
Index: sys/amd64/include/param.h
===================================================================
--- sys/amd64/include/param.h
+++ sys/amd64/include/param.h
@@ -134,8 +134,12 @@
#define IOPERM_BITMAP_SIZE (IOPAGES * PAGE_SIZE + 1)
#ifndef KSTACK_PAGES
+#ifdef KASAN
+#define KSTACK_PAGES 6
+#else
#define KSTACK_PAGES 4 /* pages of kstack (with pcb) */
#endif
+#endif
#define KSTACK_GUARD_PAGES 1 /* pages of kstack guard; 0 disables */
/*
Index: sys/x86/isa/atpic.c
===================================================================
--- sys/x86/isa/atpic.c
+++ sys/x86/isa/atpic.c
@@ -37,6 +37,7 @@
#include <sys/param.h>
#include <sys/systm.h>
+#include <sys/asan.h>
#include <sys/bus.h>
#include <sys/interrupt.h>
#include <sys/kernel.h>
@@ -522,6 +523,9 @@
{
struct intsrc *isrc;
+ /* The frame may have been written into a poisoned region. */
+ kasan_mark(frame, sizeof(*frame), sizeof(*frame), 0);
+
KASSERT(vector < NUM_ISA_IRQS, ("unknown int %u\n", vector));
isrc = &atintrs[vector].at_intsrc;
Index: sys/x86/x86/local_apic.c
===================================================================
--- sys/x86/x86/local_apic.c
+++ sys/x86/x86/local_apic.c
@@ -43,6 +43,7 @@
#include <sys/param.h>
#include <sys/systm.h>
+#include <sys/asan.h>
#include <sys/bus.h>
#include <sys/kernel.h>
#include <sys/lock.h>
@@ -1299,6 +1300,9 @@
{
struct intsrc *isrc;
+ /* The frame may have been written into a poisoned region. */
+ kasan_mark(frame, sizeof(*frame), sizeof(*frame), 0);
+
isrc = intr_lookup_source(apic_idt_to_irq(PCPU_GET(apic_id),
vector));
intr_execute_handlers(isrc, frame);
@@ -1314,6 +1318,9 @@
/* Send EOI first thing. */
lapic_eoi();
+ /* The frame may have been written into a poisoned region. */
+ kasan_mark(frame, sizeof(*frame), sizeof(*frame), 0);
+
#if defined(SMP) && !defined(SCHED_ULE)
/*
* Don't do any accounting for the disabled HTT cores, since it

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