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arch/tile: avoid false corrupt frame warning in early boot 

With lockstat we can end up trying to get a backtrace before
"high_memory" is initialized, so don't worry about range testing
if it is zero.

Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
This commit is contained in:
Chris Metcalf 2012-03-29 14:02:52 -04:00
parent cbe224705e
commit b287f69676
1 changed files with 1 additions and 1 deletions
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2
arch/tile/kernel/process.c
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@ -286,7 +286,7 @@ struct task_struct *validate_current(void)
static struct task_struct corrupt = { .comm = "<corrupt>" };
struct task_struct *tsk = current;
if (unlikely((unsigned long)tsk < PAGE_OFFSET ||
(void *)tsk > high_memory ||
(high_memory && (void *)tsk > high_memory) ||
((unsigned long)tsk & (__alignof__(*tsk) - 1)) != 0)) {
pr_err("Corrupt 'current' %p (sp %#lx)\n", tsk, stack_pointer);
tsk = &corrupt;