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[SPARC64]: Fix show_stack() when stack argument is NULL. 

It didn't handle that case at all, and now dump_stack()
can be implemented directly as show_stack(current, NULL)

Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David S. Miller 2007-07-30 00:17:12 -07:00
parent f623f388e4
commit c1f193a7ae
2 changed files with 12 additions and 11 deletions
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18
arch/sparc64/kernel/traps.c
View File

@ -2134,12 +2134,20 @@ static void user_instruction_dump (unsigned int __user *pc)
void show_stack(struct task_struct *tsk, unsigned long *_ksp)
{
unsigned long pc, fp, thread_base, ksp;
void *tp = task_stack_page(tsk);
struct thread_info *tp;
struct reg_window *rw;
int count = 0;
ksp = (unsigned long) _ksp;
if (!tsk)
tsk = current;
tp = task_thread_info(tsk);
if (ksp == 0UL) {
if (tsk == current)
asm("mov %%fp, %0" : "=r" (ksp));
else
ksp = tp->ksp;
}
if (tp == current_thread_info())
flushw_all();
@ -2168,11 +2176,7 @@ void show_stack(struct task_struct *tsk, unsigned long *_ksp)
void dump_stack(void)
{
unsigned long *ksp;
__asm__ __volatile__("mov %%fp, %0"
: "=r" (ksp));
show_stack(current, ksp);
show_stack(current, NULL);
}
EXPORT_SYMBOL(dump_stack);

5
arch/sparc64/mm/fault.c
View File

@ -112,15 +112,12 @@ static void __kprobes unhandled_fault(unsigned long address,
static void bad_kernel_pc(struct pt_regs *regs, unsigned long vaddr)
{
unsigned long *ksp;
printk(KERN_CRIT "OOPS: Bogus kernel PC [%016lx] in fault handler\n",
regs->tpc);
printk(KERN_CRIT "OOPS: RPC [%016lx]\n", regs->u_regs[15]);
print_symbol("RPC: <%s>\n", regs->u_regs[15]);
printk(KERN_CRIT "OOPS: Fault was to vaddr[%lx]\n", vaddr);
__asm__("mov %%sp, %0" : "=r" (ksp));
show_stack(current, ksp);
dump_stack();
unhandled_fault(regs->tpc, current, regs);
}