* Re: [patch] futex: Cure exit race
[not found] ` <20181210210920.75EBD20672@mail.kernel.org>
@ 2018-12-10 21:16 ` Thomas Gleixner
2018-12-10 23:01 ` Sasha Levin
0 siblings, 1 reply; 3+ messages in thread
From: Thomas Gleixner @ 2018-12-10 21:16 UTC (permalink / raw)
To: Sasha Levin; +Cc: LKML, stable
On Mon, 10 Dec 2018, Sasha Levin wrote:
> This commit has been processed because it contains a -stable tag.
> The stable tag indicates that it's relevant for the following trees: all
>
> The bot has tested the following trees: v4.19.8, v4.14.87, v4.9.144, v4.4.166, v3.18.128,
>
> v4.19.8: Build OK!
> v4.14.87: Build OK!
> v4.9.144: Build failed! Errors:
> kernel/futex.c:1186:28: error: ???uaddr??? undeclared (first use in this function)
>
> v4.4.166: Build failed! Errors:
> kernel/futex.c:1181:28: error: ???uaddr??? undeclared (first use in this function)
>
> v3.18.128: Build failed! Errors:
> kernel/futex.c:1103:28: error: ???uaddr??? undeclared (first use in this function)
>
> How should we proceed with this patch?
I'll look into that once this is sorted... I so love these rotten kernels.
Thanks,
tglx
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [patch] futex: Cure exit race
2018-12-10 21:16 ` [patch] futex: Cure exit race Thomas Gleixner
@ 2018-12-10 23:01 ` Sasha Levin
2018-12-11 10:29 ` Thomas Gleixner
0 siblings, 1 reply; 3+ messages in thread
From: Sasha Levin @ 2018-12-10 23:01 UTC (permalink / raw)
To: Thomas Gleixner; +Cc: LKML, stable
On Mon, Dec 10, 2018 at 10:16:03PM +0100, Thomas Gleixner wrote:
>On Mon, 10 Dec 2018, Sasha Levin wrote:
>> This commit has been processed because it contains a -stable tag.
>> The stable tag indicates that it's relevant for the following trees: all
>>
>> The bot has tested the following trees: v4.19.8, v4.14.87, v4.9.144, v4.4.166, v3.18.128,
>>
>> v4.19.8: Build OK!
>> v4.14.87: Build OK!
>> v4.9.144: Build failed! Errors:
>> kernel/futex.c:1186:28: error: ???uaddr??? undeclared (first use in this function)
>>
>> v4.4.166: Build failed! Errors:
>> kernel/futex.c:1181:28: error: ???uaddr??? undeclared (first use in this function)
>>
>> v3.18.128: Build failed! Errors:
>> kernel/futex.c:1103:28: error: ???uaddr??? undeclared (first use in this function)
>>
>> How should we proceed with this patch?
>
>I'll look into that once this is sorted... I so love these rotten kernels.
It seems we need:
734009e96d19 ("futex: Change locking rules")
Which isn't trivial to backport.
--
Thanks,
Sasha
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [patch] futex: Cure exit race
2018-12-10 23:01 ` Sasha Levin
@ 2018-12-11 10:29 ` Thomas Gleixner
0 siblings, 0 replies; 3+ messages in thread
From: Thomas Gleixner @ 2018-12-11 10:29 UTC (permalink / raw)
To: Sasha Levin; +Cc: LKML, stable
On Mon, 10 Dec 2018, Sasha Levin wrote:
> On Mon, Dec 10, 2018 at 10:16:03PM +0100, Thomas Gleixner wrote:
> > On Mon, 10 Dec 2018, Sasha Levin wrote:
> > > How should we proceed with this patch?
> >
> > I'll look into that once this is sorted... I so love these rotten kernels.
>
> It seems we need:
>
> 734009e96d19 ("futex: Change locking rules")
>
> Which isn't trivial to backport.
It's simpler to backport the fix. I'll look at that once we agreed on the
final solution.
Thanks,
tglx
^ permalink raw reply [flat|nested] 3+ messages in thread
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[not found] ` <20181210210920.75EBD20672@mail.kernel.org>
2018-12-10 21:16 ` [patch] futex: Cure exit race Thomas Gleixner
2018-12-10 23:01 ` Sasha Levin
2018-12-11 10:29 ` Thomas Gleixner
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