Re: [PATCH v2 1/7] modules: Create rlimit for module space

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To: "Edgecombe, Rick P" <rick.p.edgecombe@xxxxxxxxx>
Subject: Re: [PATCH v2 1/7] modules: Create rlimit for module space
From: Michal Hocko <mhocko@xxxxxxxxxx>
Date: Tue, 23 Oct 2018 13:32:34 +0200
Cc: "jannh@xxxxxxxxxx" <jannh@xxxxxxxxxx>, "linux-kernel@xxxxxxxxxxxxxxx" <linux-kernel@xxxxxxxxxxxxxxx>, "daniel@xxxxxxxxxxxxx" <daniel@xxxxxxxxxxxxx>, "keescook@xxxxxxxxxxxx" <keescook@xxxxxxxxxxxx>, "jeyu@xxxxxxxxxx" <jeyu@xxxxxxxxxx>, "linux-arch@xxxxxxxxxxxxxxx" <linux-arch@xxxxxxxxxxxxxxx>, "arjan@xxxxxxxxxxxxxxx" <arjan@xxxxxxxxxxxxxxx>, "tglx@xxxxxxxxxxxxx" <tglx@xxxxxxxxxxxxx>, "linux-mips@xxxxxxxxxxxxxx" <linux-mips@xxxxxxxxxxxxxx>, "linux-s390@xxxxxxxxxxxxxxx" <linux-s390@xxxxxxxxxxxxxxx>, "x86@xxxxxxxxxx" <x86@xxxxxxxxxx>, "kristen@xxxxxxxxxxxxxxx" <kristen@xxxxxxxxxxxxxxx>, "Dock, Deneen T" <deneen.t.dock@xxxxxxxxx>, "catalin.marinas@xxxxxxx" <catalin.marinas@xxxxxxx>, "mingo@xxxxxxxxxx" <mingo@xxxxxxxxxx>, "will.deacon@xxxxxxx" <will.deacon@xxxxxxx>, "kernel-hardening@xxxxxxxxxxxxxxxxxx" <kernel-hardening@xxxxxxxxxxxxxxxxxx>, "bp@xxxxxxxxx" <bp@xxxxxxxxx>, "Hansen, Dave" <dave.hansen@xxxxxxxxx>, "linux-arm-kernel@xxxxxxxxxxxxxxxxxxx" <linux-arm-kernel@xxxxxxxxxxxxxxxxxxx>, "davem@xxxxxxxxxxxxx" <davem@xxxxxxxxxxxxx>, "arnd@xxxxxxxx" <arnd@xxxxxxxx>, "linux-fsdevel@xxxxxxxxxxxxxxx" <linux-fsdevel@xxxxxxxxxxxxxxx>, "sparclinux@xxxxxxxxxxxxxxx" <sparclinux@xxxxxxxxxxxxxxx>
In-reply-to: <7b0714e26c7c2216721641d7df16a49687927e37.camel@intel.com>
References: <20181011233117.7883-1-rick.p.edgecombe@intel.com> <20181011233117.7883-2-rick.p.edgecombe@intel.com> <CAG48ez2fWg64nGxDXUQS3695KpVNrakAbarXJnYPd6xv5wOD+A@mail.gmail.com> <7b0714e26c7c2216721641d7df16a49687927e37.camel@intel.com>
User-agent: Mutt/1.10.1 (2018-07-13)

On Fri 12-10-18 17:04:46, Edgecombe, Rick P wrote:
[...]
> Any thoughts on if instead of all this there was just a system wide limit on BPF
> JIT module space usage?

We do allow to charge vmalloc memory to a memory cgroup. Isn't that a
way forward?
-- 
Michal Hocko
SUSE Labs

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References:
- [PATCH v2 0/7] Rlimit for module space
  - From: Rick Edgecombe
- [PATCH v2 1/7] modules: Create rlimit for module space
  - From: Rick Edgecombe
- Re: [PATCH v2 1/7] modules: Create rlimit for module space
  - From: Jann Horn
- Re: [PATCH v2 1/7] modules: Create rlimit for module space
  - From: Edgecombe, Rick P

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