From f2536e51e4c9cbbaea8e9e5e4219d73fc3aef36f Mon Sep 17 00:00:00 2001 From: "Madhavan T. Venkataraman" Date: Wed, 13 Apr 2022 15:59:05 +0100 Subject: [PATCH] UPSTREAM: arm64: stacktrace: remove NULL task check from unwind_frame() Currently, there is a check for a NULL task in unwind_frame(). It is not needed since all current callers pass a non-NULL task. There should be no functional change as a result of this patch. Signed-off-by: Madhavan T. Venkataraman Reviewed-by: Mark Brown Signed-off-by: Mark Rutland Reviewed-by: Kalesh Singh for the series. Link: https://lore.kernel.org/r/20220413145910.3060139-2-mark.rutland@arm.com Signed-off-by: Catalin Marinas (cherry picked from commit 4f6277e8ac397e5932d9af5c6b3dadefe81d53dc) Signed-off-by: Will Deacon Bug: 233587962 Bug: 233588291 Change-Id: Icbebe5e7a79047a9db9104391277f063df1d616a --- arch/arm64/kernel/stacktrace.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/arm64/kernel/stacktrace.c b/arch/arm64/kernel/stacktrace.c index 0114011485bc..421ba2b804e5 100644 --- a/arch/arm64/kernel/stacktrace.c +++ b/arch/arm64/kernel/stacktrace.c @@ -67,9 +67,6 @@ static int notrace unwind_frame(struct task_struct *tsk, unsigned long fp = frame->fp; struct stack_info info; - if (!tsk) - tsk = current; - /* Final frame; nothing to unwind */ if (fp == (unsigned long)task_pt_regs(tsk)->stackframe) return -ENOENT;