git: df8dd6025af8 - main - amd64: stop using top of the thread' kernel stack for FPU user save area

[Mateusz Guzik]

On 9/23/21, Mark Johnston <markj at freebsd.org> wrote:
> On Thu, Sep 23, 2021 at 09:49:47PM +0200, Mateusz Guzik wrote:
>> On 9/21/21, Konstantin Belousov <kib at freebsd.org> wrote:
>> > The branch main has been updated by kib:
>> >
>> > URL:
>> > https://cgit.FreeBSD.org/src/commit/?id=df8dd6025af88a99d34f549fa9591a9b8f9b75b1
>> >
>> > commit df8dd6025af88a99d34f549fa9591a9b8f9b75b1
>> > Author:     Konstantin Belousov <kib at FreeBSD.org>
>> > AuthorDate: 2021-09-13 21:05:47 +0000
>> > Commit:     Konstantin Belousov <kib at FreeBSD.org>
>> > CommitDate: 2021-09-21 17:20:15 +0000
>> >
>> >     amd64: stop using top of the thread' kernel stack for FPU user save
>> > area
>> >
>>
>> This causes KASAN to crash on boot:
>>
>> panic: ASan: Invalid access, 192-byte read at 0xffffffff84105f40,
>
> Try grabbing https://reviews.freebsd.org/D32057
>

This indeed takes care of it, thanks.

-- 
Mateusz Guzik <mjguzik gmail.com>