linux-kernel - Re: [RFC][PATCH v2 00/31] timers: Use del_timer

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Message-ID: <2c994811-e481-d0e3-3e0b-c2a8ac456464@roeck-us.net>
Date:   Thu, 27 Oct 2022 12:44:56 -0700
From:   Guenter Roeck <linux@...ck-us.net>
To:     Steven Rostedt <rostedt@...dmis.org>,
        Linus Torvalds <torvalds@...ux-foundation.org>
Cc:     linux-kernel@...r.kernel.org, Thomas Gleixner <tglx@...utronix.de>,
        Stephen Boyd <sboyd@...nel.org>
Subject: Re: [RFC][PATCH v2 00/31] timers: Use del_timer_shutdown() before
 freeing timers

On 10/27/22 12:16, Steven Rostedt wrote:
> On Thu, 27 Oct 2022 12:11:43 -0700
> Linus Torvalds <torvalds@...ux-foundation.org> wrote:
> 
>> On Thu, Oct 27, 2022 at 12:02 PM Steven Rostedt <rostedt@...dmis.org> wrote:
>>>
>>> So it works on current stable and current mainline? Does that mean we need
>>> to worry about this?
>>
>> No, I think Guenter is saying that current mainline *without* the
>> patches works fine.
>>
>> But v6.1-rc2 (which is quite close to that current mainline) *with*
>> the patches blows up.
>>
>> So it's almost certainly the patches that break. There are no
>> appreciable timer changes in those 105 commits (there's some added
>> irq_work_sync but that looks very unlikely to be related.
>>
> 
> Got it. I'll need to setup an arm64 VM to see if I can reproduce it.
> 

Try http://server.roeck-us.net/qemu/aarch64/

Guenter