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SubjectRe: [PATCH v5 13/16] memcg: enable accounting for signals
On Mon, Jul 19, 2021 at 3:46 AM Vasily Averin <> wrote:
> When a user send a signal to any another processes it forces the kernel
> to allocate memory for 'struct sigqueue' objects. The number of signals
> is limited by RLIMIT_SIGPENDING resource limit, but even the default
> settings allow each user to consume up to several megabytes of memory.
> Moreover, an untrusted admin inside container can increase the limit or
> create new fake users and force them to sent signals.
> It makes sense to account for these allocations to restrict the host's
> memory consumption from inside the memcg-limited container.
> Signed-off-by: Vasily Averin <>

It seems like there is an agreement on this patch with the updated
commit message. In next version you can add:

Reviewed-by: Shakeel Butt <>

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