[Crash-utility] Re: [PATCH 5/5] LoongArch64: Add dummy eframe_search to avoid bt -e segfault

The lack of machdep->eframe_search initialization causes the crash tool to segment fault when executing `bt -e`. Provide a stub function that returns a fatal error indicating the option is not supported, matching the behavior of other architectures that lack this feature. Signed-off-by: Ming Wang <wangming01(a)loongson.cn&gt; --- loongarch64.c | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/loongarch64.c b/loongarch64.c index 9980b35bdff1..b0ebf8b1d99e 100644 --- a/loongarch64.c +++ b/loongarch64.c @@ -64,6 +64,7 @@ static void loongarch64_dump_backtrace_entry(struct bt_info *bt, struct loongarch64_unwind_frame *previous, int level); static void loongarch64_dump_exception_stack(struct bt_info *bt, char *pt_regs); static int loongarch64_is_exception_entry(struct syment *sym); +static int loongarch64_eframe_search(struct bt_info *bt); static void loongarch64_display_full_frame(struct bt_info *bt, struct loongarch64_unwind_frame *current, struct loongarch64_unwind_frame *previous); @@ -1267,6 +1268,7 @@ loongarch64_init(int when) machdep->kvtop = loongarch64_kvtop; machdep->cmd_mach = loongarch64_cmd_mach; machdep->back_trace = loongarch64_back_trace_cmd; + machdep->eframe_search = loongarch64_eframe_search; machdep->get_stack_frame = loongarch64_get_stack_frame; machdep->vmalloc_start = loongarch64_vmalloc_start; machdep->processor_speed = loongarch64_processor_speed; @@ -1389,6 +1391,12 @@ loongarch64_display_regs_from_elf_notes(int cpu, FILE *ofp) regs->csr_euen); } +static int +loongarch64_eframe_search(struct bt_info *bt) +{ + return error(FATAL, "-e option not supported on this architecture\n"); +} + #else /* !LOONGARCH64 */ #include "defs.h" -- 2.43.0