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-rw-r--r--arch/x86/kernel/unwind_frame.c34
1 files changed, 21 insertions, 13 deletions
diff --git a/arch/x86/kernel/unwind_frame.c b/arch/x86/kernel/unwind_frame.c
index ae0821f6c3a5..fec70fe3b1ec 100644
--- a/arch/x86/kernel/unwind_frame.c
+++ b/arch/x86/kernel/unwind_frame.c
@@ -30,6 +30,8 @@ static void unwind_dump(struct unwind_state *state)
static bool dumped_before = false;
bool prev_zero, zero = false;
unsigned long word, *sp;
+ struct stack_info stack_info = {0};
+ unsigned long visit_mask = 0;
if (dumped_before)
return;
@@ -40,21 +42,27 @@ static void unwind_dump(struct unwind_state *state)
state->stack_info.type, state->stack_info.next_sp,
state->stack_mask, state->graph_idx);
- for (sp = state->orig_sp; sp < state->stack_info.end; sp++) {
- word = READ_ONCE_NOCHECK(*sp);
+ for (sp = state->orig_sp; sp; sp = PTR_ALIGN(stack_info.next_sp, sizeof(long))) {
+ if (get_stack_info(sp, state->task, &stack_info, &visit_mask))
+ break;
- prev_zero = zero;
- zero = word == 0;
+ for (; sp < stack_info.end; sp++) {
- if (zero) {
- if (!prev_zero)
- printk_deferred("%p: %0*x ...\n",
- sp, BITS_PER_LONG/4, 0);
- continue;
- }
+ word = READ_ONCE_NOCHECK(*sp);
+
+ prev_zero = zero;
+ zero = word == 0;
- printk_deferred("%p: %0*lx (%pB)\n",
- sp, BITS_PER_LONG/4, word, (void *)word);
+ if (zero) {
+ if (!prev_zero)
+ printk_deferred("%p: %0*x ...\n",
+ sp, BITS_PER_LONG/4, 0);
+ continue;
+ }
+
+ printk_deferred("%p: %0*lx (%pB)\n",
+ sp, BITS_PER_LONG/4, word, (void *)word);
+ }
}
}
@@ -216,7 +224,7 @@ static bool update_stack_state(struct unwind_state *state,
}
/* Save the original stack pointer for unwind_dump(): */
- if (!state->orig_sp || info->type != prev_type)
+ if (!state->orig_sp)
state->orig_sp = frame;
return true;