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-rw-r--r--arch/tile/kernel/stack.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/tile/kernel/stack.c b/arch/tile/kernel/stack.c
index 176ffe48eee9..a9db923bb9eb 100644
--- a/arch/tile/kernel/stack.c
+++ b/arch/tile/kernel/stack.c
@@ -29,6 +29,7 @@
#include <asm/switch_to.h>
#include <asm/sigframe.h>
#include <asm/stack.h>
+#include <asm/vdso.h>
#include <arch/abi.h>
#include <arch/interrupts.h>
@@ -119,7 +120,7 @@ static struct pt_regs *valid_fault_handler(struct KBacktraceIterator* kbt)
/* Is the pc pointing to a sigreturn trampoline? */
static int is_sigreturn(unsigned long pc)
{
- return (pc == VDSO_BASE);
+ return current->mm && (pc == VDSO_SYM(&__vdso_rt_sigreturn));
}
/* Return a pt_regs pointer for a valid signal handler frame */
@@ -128,7 +129,7 @@ static struct pt_regs *valid_sigframe(struct KBacktraceIterator* kbt,
{
BacktraceIterator *b = &kbt->it;
- if (b->pc == VDSO_BASE && b->sp < PAGE_OFFSET &&
+ if (is_sigreturn(b->pc) && b->sp < PAGE_OFFSET &&
b->sp % sizeof(long) == 0) {
int retval;
pagefault_disable();