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

madvenka
2022-01-03T16:54:07Z

From: "Madhavan T. Venkataraman" <madvenka@linux.microsoft.com>

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 <madvenka@linux.microsoft.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
---
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