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Merge branch 'for-linus' of git://one.firstfloor.org/home/andi/git/linux-2.6

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* '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
This commit is contained in:
Linus Torvalds 2006-11-28 17:28:41 -08:00
commit 707badb80b
4 changed files with 18 additions and 7 deletions
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2
arch/x86_64/kernel/io_apic.c
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@ -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]))

10
arch/x86_64/kernel/traps.c
View file

@ -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);