linux-kernel - Re: [PATCH v2 1/1] x86/fred: Fix the FRED RSP0 MSR out of sync with its per-CPU cache

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <59157380-3675-42e1-9b26-34c0dbe0148c@zytor.com>
Date: Fri, 10 Jan 2025 10:16:19 -0800
From: Xin Li <xin@...or.com>
To: Dave Hansen <dave.hansen@...el.com>, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org
Cc: tglx@...utronix.de, mingo@...hat.com, bp@...en8.de,
        dave.hansen@...ux.intel.com, x86@...nel.org, hpa@...or.com,
        andrew.cooper3@...rix.com
Subject: Re: [PATCH v2 1/1] x86/fred: Fix the FRED RSP0 MSR out of sync with
 its per-CPU cache

On 1/10/2025 10:09 AM, Dave Hansen wrote:
> On 1/10/25 09:46, Xin Li (Intel) wrote:
> ...> Fix the bug through resynchronizing the FRED RSP0 MSR with its
>> per-CPU cache in cpu_init_fred_exceptions().
>>
>> Fixes: fe85ee391966 ("x86/entry: Set FRED RSP0 on return to userspace instead of context switch")
>> Signed-off-by: Xin Li (Intel) <xin@...or.com>
>> Cc: stable@...r.kernel.org
> 
> Thanks for the update:
> 
> Acked-by: Dave Hansen <dave.hansen@...ux.intel.com>
> 
> I'll probably do a wee bit of testing today and apply to the urgent pile
> early next week.
> 

Sure, thanks a lot!