diff options
Diffstat (limited to 'arch/loongarch/kernel/stacktrace.c')
| -rw-r--r-- | arch/loongarch/kernel/stacktrace.c | 18 |
1 files changed, 10 insertions, 8 deletions
diff --git a/arch/loongarch/kernel/stacktrace.c b/arch/loongarch/kernel/stacktrace.c index 2463d2fea21f..92270f14db94 100644 --- a/arch/loongarch/kernel/stacktrace.c +++ b/arch/loongarch/kernel/stacktrace.c @@ -18,17 +18,19 @@ void arch_stack_walk(stack_trace_consume_fn consume_entry, void *cookie, struct pt_regs dummyregs; struct unwind_state state; - regs = &dummyregs; + if (!regs) { + regs = &dummyregs; - if (task == current) { - regs->regs[3] = (unsigned long)__builtin_frame_address(0); - regs->csr_era = (unsigned long)__builtin_return_address(0); - } else { - regs->regs[3] = thread_saved_fp(task); - regs->csr_era = thread_saved_ra(task); + if (task == current) { + regs->regs[3] = (unsigned long)__builtin_frame_address(0); + regs->csr_era = (unsigned long)__builtin_return_address(0); + } else { + regs->regs[3] = thread_saved_fp(task); + regs->csr_era = thread_saved_ra(task); + } + regs->regs[1] = 0; } - regs->regs[1] = 0; for (unwind_start(&state, task, regs); !unwind_done(&state) && !unwind_error(&state); unwind_next_frame(&state)) { addr = unwind_get_return_address(&state); |