linux-kernel - Re: [PATCH v5 02/15] arm64: errata: Add detection for TRBE overwrite in FILL mode

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

Message-ID: <fa6177aa-e84d-3928-f202-0dd70df3164a@arm.com>
Date:   Tue, 19 Oct 2021 12:15:49 +0100
From:   Suzuki K Poulose <suzuki.poulose@....com>
To:     Will Deacon <will@...nel.org>
Cc:     mathieu.poirier@...aro.org, catalin.marinas@....com,
        anshuman.khandual@....com, mike.leach@...aro.org,
        leo.yan@...aro.org, maz@...nel.org, coresight@...ts.linaro.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Mark Rutland <mark.rutland@....com>
Subject: Re: [PATCH v5 02/15] arm64: errata: Add detection for TRBE overwrite
 in FILL mode

On 19/10/2021 12:04, Will Deacon wrote:
> On Thu, Oct 14, 2021 at 11:31:12PM +0100, Suzuki K Poulose wrote:
>> Arm Neoverse-N2 and the Cortex-A710 cores are affected
>> by a CPU erratum where the TRBE will overwrite the trace buffer
>> in FILL mode. The TRBE doesn't stop (as expected in FILL mode)
>> when it reaches the limit and wraps to the base to continue
>> writing upto 3 cache lines. This will overwrite any trace that
>> was written previously.
>>
>> Add the Neoverse-N2 erratumi(#2139208) and Cortex-A710 erratum
>> (#2119858) to the  detection logic.
> 
> Weird typo and double space in this sentence.

I have fixed this now.

Thanks
Suzuki