[Crash-utility] [PATCH 4/5] LoongArch64: Fix stack frame loop bounds for exception frames

Remove the incorrect -32 padding from stacktop limits in loongarch64.c. In modern LoongArch64 kernels, pt_regs rests exactly at the top of the stack, and this -32 padding forces the backtrace loop to terminate prematurely before reaching the exception frame. Signed-off-by: Ming Wang <wangming01(a)loongson.cn&gt; --- loongarch64.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/loongarch64.c b/loongarch64.c index 3ec184c908f8..9980b35bdff1 100644 --- a/loongarch64.c +++ b/loongarch64.c @@ -461,7 +461,7 @@ loongarch64_back_trace_cmd(struct bt_info *bt) previous.pc = current.ra = regs->regs[LOONGARCH64_EF_RA]; } - while (current.sp <= bt->stacktop - 32 - SIZE(pt_regs)) { + while (current.sp <= bt->stacktop - SIZE(pt_regs)) { struct syment *symbol = NULL; ulong offset; @@ -501,7 +501,7 @@ loongarch64_back_trace_cmd(struct bt_info *bt) * * ret_from_kernel_thread */ if (symbol && !STRNEQ(symbol->name, "ret_from") && !offset && - !current.ra && current.sp < bt->stacktop - 32 - SIZE(pt_regs)) { + !current.ra && current.sp < bt->stacktop - SIZE(pt_regs)) { if (CRASHDEBUG(8)) fprintf(fp, "zero offset at %s, try previous symbol\n", symbol->name); -- 2.43.0