diff options
Diffstat (limited to 'arch/s390/lib/test_unwind.c')
| -rw-r--r-- | arch/s390/lib/test_unwind.c | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/s390/lib/test_unwind.c b/arch/s390/lib/test_unwind.c index 687a6922beda..db94e657c056 100644 --- a/arch/s390/lib/test_unwind.c +++ b/arch/s390/lib/test_unwind.c @@ -56,11 +56,19 @@ static noinline int test_unwind(struct task_struct *task, struct pt_regs *regs, unsigned long addr = unwind_get_return_address(&state); char sym[KSYM_SYMBOL_LEN]; - if (!addr || frame_count == max_frames) + if (frame_count++ == max_frames) break; + if (state.reliable && !addr) { + pr_err("unwind state reliable but addr is 0\n"); + return -EINVAL; + } sprint_symbol(sym, addr); if (bt_pos < BT_BUF_SIZE) { - bt_pos += snprintf(bt + bt_pos, BT_BUF_SIZE - bt_pos, "%s\n", sym); + bt_pos += snprintf(bt + bt_pos, BT_BUF_SIZE - bt_pos, + state.reliable ? " [%-7s%px] %pSR\n" : + "([%-7s%px] %pSR)\n", + stack_type_name(state.stack_info.type), + (void *)state.sp, (void *)state.ip); if (bt_pos >= BT_BUF_SIZE) pr_err("backtrace buffer is too small\n"); } |