lkml.org 
[lkml]   [2017]   [Aug]   [31]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 1/2] arm64: stacktrace: avoid listing stacktrace functions in stacktrace
From
Date


On 8/31/2017 1:58 AM, Andrew Morton wrote:
> On Wed, 30 Aug 2017 13:02:22 +0530 Prakash Gupta <guptap@codeaurora.org> wrote:
>
>> The stacktraces always begin as follows:
>>
>> [<c00117b4>] save_stack_trace_tsk+0x0/0x98
>> [<c0011870>] save_stack_trace+0x24/0x28
>> ...
>>
>> This is because the stack trace code includes the stack frames for itself.
>> This is incorrect behaviour, and also leads to "skip" doing the wrong thing
>> (which is the number of stack frames to avoid recording.)
>>
>> Perversely, it does the right thing when passed a non-current thread. Fix
>> this by ensuring that we have a known constant number of frames above the
>> main stack trace function, and always skip these.
>>
>> This was fixed for arch arm by Commit 3683f44c42e9 ("ARM: stacktrace: avoid
>> listing stacktrace functions in stacktrace")
>
> I can take this (with acks, please?)
>
> 3683f44c42e9 has a cc:stable but your patch does not. Should it?
>

My bad, it should be copied to stable as well.

> --
> To unsubscribe, send a message with 'unsubscribe linux-mm' in
> the body to majordomo@kvack.org. For more info on Linux MM,
> see: http://www.linux-mm.org/ .
> Don't email: <a href=mailto:"dont@kvack.org"> email@kvack.org </a>
>

--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a
member of the Code Aurora Forum, hosted by The Linux Foundation

\
 
 \ /
  Last update: 2017-08-31 08:29    [W:0.112 / U:3.768 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site