[Crash-utility] [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>
---
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