From: sashiko-bot@kernel.org
Cc: linux-security-module@vger.kernel.org
Subject: Re: [PATCH] selftests: binderfs: skip the stress test without binderfs
Date: Fri, 25 Sep 2026 13:40:31 +0000 [thread overview]
Message-ID: <20260925134031.CCAF91F000FF@smtp.kernel.org> (raw)
In-Reply-To: <20260925133435.3635453-1-eva.kurchatova@virtuozzo.com>
> binderfs_stress mounts binderfs and asserts on the first mount, so on
> a kernel without CONFIG_ANDROID_BINDERFS the case fails rather than
> reporting that the filesystem is not there.
>
> Ask /proc/filesystems whether the kernel has it, the way
> supports_filesystem() in the landlock tests and check_resctrlfs_support()
> in the resctrl ones already do, and skip when it does not.
>
> Probing with a mount instead would not work here: the test is meant to
> run unprivileged, and path_mount() rejects an unprivileged caller in
> may_mount() before do_new_mount() ever looks the filesystem type up, so
> the probe would see EPERM whether binderfs is there or not. The child
> would then still reach the real mount inside its userns and fail.
>
> Signed-off-by: Eva Kurchatova <eva.kurchatova@virtuozzo.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260925133435.3635453-1-eva.kurchatova@virtuozzo.com?part=1
prev parent reply other threads:[~2026-09-25 13:40 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-25 13:34 [PATCH] selftests: binderfs: skip the stress test without binderfs Eva Kurchatova
2026-09-25 13:40 ` sashiko-bot [this message]
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20260925134031.CCAF91F000FF@smtp.kernel.org \
--to=sashiko-bot@kernel.org \
--cc=linux-security-module@vger.kernel.org \
--cc=sashiko-reviews@lists.linux.dev \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.