Josh pointed out, that there is no way a frame can be after user regs. So remove the last unwind and the check.
Signed-off-by: Jiri Slaby <[email protected]> Cc: Thomas Gleixner <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: "H. Peter Anvin" <[email protected]> Cc: [email protected] Cc: Josh Poimboeuf <[email protected]> --- arch/x86/kernel/stacktrace.c | 9 --------- 1 file changed, 9 deletions(-) diff --git a/arch/x86/kernel/stacktrace.c b/arch/x86/kernel/stacktrace.c index 093f2ea5dd56..8948b7d9c064 100644 --- a/arch/x86/kernel/stacktrace.c +++ b/arch/x86/kernel/stacktrace.c @@ -113,15 +113,6 @@ __save_stack_trace_reliable(struct stack_trace *trace, if (!user_mode(regs)) return -EINVAL; - /* - * The last frame contains the user mode syscall - * pt_regs. Skip it and finish the unwind. - */ - unwind_next_frame(&state); - if (!unwind_done(&state)) { - STACKTRACE_DUMP_ONCE(task); - return -EINVAL; - } break; } -- 2.16.3
