Subject: [PATCH v12 01/10] arm64: Remove NULL task check from unwind_frame()

From: [email-masked]
Date: Mon, 3 Jan 2022 10:52:03 -0600

From: "Madhavan T. Venkataraman" <[email-masked]>

Currently, there is a check for a NULL task in unwind_frame(). It is not
needed since all current consumers pass a non-NULL task.

Signed-off-by: Madhavan T. Venkataraman <[email-masked]>
Reviewed-by: Mark Brown <[email-masked]>
---
 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 0fb58fed54cb..5f5bb35b7b41 100644
--- a/arch/arm64/kernel/stacktrace.c
+++ b/arch/arm64/kernel/stacktrace.c
@@ -69,9 +69,6 @@ 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;
-- 
2.25.1

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