From: Michael Ellerman <mpe@ellerman.id.au>
To: Luis Chamberlain <mcgrof@kernel.org>
Cc: Herbert Xu <herbert@gondor.apana.org.au>,
linux-kernel@vger.kernel.org, linux-modules@vger.kernel.org,
fnovak@us.ibm.com, linuxppc-dev@ozlabs.org,
christophe.leroy@csgroup.eu
Subject: Re: request_module DoS
Date: Thu, 12 May 2022 22:07:26 +1000 [thread overview]
Message-ID: <87v8ub6jk1.fsf@mpe.ellerman.id.au> (raw)
In-Reply-To: <871qwz8aot.fsf@mpe.ellerman.id.au>
Michael Ellerman <mpe@ellerman.id.au> writes:
> Luis Chamberlain <mcgrof@kernel.org> writes:
...
>
>> Can someone try this on ppc64le system? At this point I am not convinced
>> this issue is generic.
>
> Does your x86 system have at least 784 CPUs?
>
> I don't know where the original report came from, but the trace shows
> "CPU 784", which would usually indicate a system with at least that many
> CPUs.
Update, apparently the report originally came from IBM, so I'll chase it
up internally.
I think you're right that there's probably no issue in the module code,
sorry to waste your time.
cheers
next prev parent reply other threads:[~2022-05-12 12:07 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-05-07 3:08 Herbert Xu
2022-05-07 7:10 ` Christophe Leroy
2022-05-07 8:02 ` Luis Chamberlain
2022-05-07 19:14 ` Luis Chamberlain
2022-05-09 1:42 ` Luis Chamberlain
2022-05-09 11:23 ` Michael Ellerman
2022-05-09 16:13 ` Luis Chamberlain
2022-05-11 16:35 ` Luis Chamberlain
2022-05-12 7:36 ` Michael Ellerman
2022-05-12 12:07 ` Michael Ellerman [this message]
2022-05-12 17:43 ` Luis Chamberlain
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