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authorLinus Torvalds <torvalds@woody.osdl.org>2006-11-28 17:28:41 -0800
committerLinus Torvalds <torvalds@woody.osdl.org>2006-11-28 17:28:41 -0800
commit707badb80b90d15d97f46155e6af432bd52789a3 (patch)
tree56f4aea5043aa4473e67412208b51230e497239a
parentb6a10886442364ceb20115bb3836764a7d99a83b (diff)
parentc547c77ee4d0408907847f64c403df1bf2f9c7a0 (diff)
Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6
* 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6: [PATCH] x86-64: Use stricter in process stack check for unwinder [PATCH] i386: Fix compilation with UP genericarch [PATCH] x86-64: Fix warning in io_apic.c [PATCH] x86-64: work around gcc4 issue with -Os in Dwarf2 stack unwind [PATCH] x86_64: Align data segment to PAGE_SIZE boundary
-rw-r--r--arch/x86_64/kernel/io_apic.c2
-rw-r--r--arch/x86_64/kernel/traps.c10
-rw-r--r--include/asm-i386/mach-summit/mach_apic.h4
-rw-r--r--kernel/unwind.c9
4 files changed, 18 insertions, 7 deletions
diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c
index 14654e68241..c80081a6ba4 100644
--- a/arch/x86_64/kernel/io_apic.c
+++ b/arch/x86_64/kernel/io_apic.c
@@ -754,10 +754,8 @@ void __setup_vector_irq(int cpu)
{
/* Initialize vector_irq on a new cpu */
/* This function must be called with vector_lock held */
- unsigned long flags;
int irq, vector;
-
/* Mark the inuse vectors */
for (irq = 0; irq < NR_IRQ_VECTORS; ++irq) {
if (!cpu_isset(cpu, irq_domain[irq]))
diff --git a/arch/x86_64/kernel/traps.c b/arch/x86_64/kernel/traps.c
index a153d0a01b7..0d65b22f229 100644
--- a/arch/x86_64/kernel/traps.c
+++ b/arch/x86_64/kernel/traps.c
@@ -242,12 +242,19 @@ static int dump_trace_unwind(struct unwind_frame_info *info, void *context)
* severe exception (double fault, nmi, stack fault, debug, mce) hardware stack
*/
+static inline int valid_stack_ptr(struct thread_info *tinfo, void *p)
+{
+ void *t = (void *)tinfo;
+ return p > t && p < t + THREAD_SIZE - 3;
+}
+
void dump_trace(struct task_struct *tsk, struct pt_regs *regs, unsigned long * stack,
struct stacktrace_ops *ops, void *data)
{
const unsigned cpu = smp_processor_id();
unsigned long *irqstack_end = (unsigned long *)cpu_pda(cpu)->irqstackptr;
unsigned used = 0;
+ struct thread_info *tinfo;
if (!tsk)
tsk = current;
@@ -370,7 +377,8 @@ void dump_trace(struct task_struct *tsk, struct pt_regs *regs, unsigned long * s
/*
* This handles the process stack:
*/
- HANDLE_STACK (((long) stack & (THREAD_SIZE-1)) != 0);
+ tinfo = current_thread_info();
+ HANDLE_STACK (valid_stack_ptr(tinfo, stack));
#undef HANDLE_STACK
}
EXPORT_SYMBOL(dump_trace);
diff --git a/include/asm-i386/mach-summit/mach_apic.h b/include/asm-i386/mach-summit/mach_apic.h
index ef0671e5d5c..43e5bd8f4a1 100644
--- a/include/asm-i386/mach-summit/mach_apic.h
+++ b/include/asm-i386/mach-summit/mach_apic.h
@@ -88,7 +88,11 @@ static inline void clustered_apic_check(void)
static inline int apicid_to_node(int logical_apicid)
{
+#ifdef CONFIG_SMP
return apicid_2_node[hard_smp_processor_id()];
+#else
+ return 0;
+#endif
}
/* Mapping from cpu number to logical apicid */
diff --git a/kernel/unwind.c b/kernel/unwind.c
index f7e50d16dbf..ed0a21d4a90 100644
--- a/kernel/unwind.c
+++ b/kernel/unwind.c
@@ -938,8 +938,11 @@ int unwind(struct unwind_frame_info *frame)
else {
retAddrReg = state.version <= 1 ? *ptr++ : get_uleb128(&ptr, end);
/* skip augmentation */
- if (((const char *)(cie + 2))[1] == 'z')
- ptr += get_uleb128(&ptr, end);
+ if (((const char *)(cie + 2))[1] == 'z') {
+ uleb128_t augSize = get_uleb128(&ptr, end);
+
+ ptr += augSize;
+ }
if (ptr > end
|| retAddrReg >= ARRAY_SIZE(reg_info)
|| REG_INVALID(retAddrReg)
@@ -963,9 +966,7 @@ int unwind(struct unwind_frame_info *frame)
if (cie == NULL || fde == NULL) {
#ifdef CONFIG_FRAME_POINTER
unsigned long top, bottom;
-#endif
-#ifdef CONFIG_FRAME_POINTER
top = STACK_TOP(frame->task);
bottom = STACK_BOTTOM(frame->task);
# if FRAME_RETADDR_OFFSET < 0