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UPSTREAM: arm64: stacktrace: remove NULL task check from unwind_frame()

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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 <madvenka@linux.microsoft.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Kalesh Singh <kaleshsingh@google.com> for the series.
Link: https://lore.kernel.org/r/20220413145910.3060139-2-mark.rutland@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
(cherry picked from commit 4f6277e8ac)
Signed-off-by: Will Deacon <willdeacon@google.com>
Bug: 233587962
Bug: 233588291
Change-Id: Icbebe5e7a79047a9db9104391277f063df1d616a
This commit is contained in:
Madhavan T. Venkataraman
2022-04-13 15:59:05 +01:00
committed by Quentin Perret
parent 1b97dc8fd6
commit f2536e51e4
1 changed files with 0 additions and 3 deletions
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3
arch/arm64/kernel/stacktrace.c
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@@ -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;