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Vlad Kulikov
7229d74e5e
If setup_mq_sysctls(ns) fails after mq_init_ns(ns) succeeds, the error path skipped releasing the internal kernel mqueue mount kept in ns->mq_mnt. That leaves the vfsmount/superblock referenced until final namespace teardown, i.e. a resource leak on this rare failure edge. Unwind it by calling mntput(ns->mq_mnt) before dropping user_ns and freeing the IPC namespace. This mirrors the normal ordering used in free_ipc_ns(). Link: https://lkml.kernel.org/r/20251021181341.670297-1-vlad_kulikov_c@pm.me Signed-off-by: Vlad Kulikov <vlad_kulikov_c@pm.me> Reviewed-by: Jan Kara <jack@suse.cz> Cc: Aleksa Sarai <cyphar@cyphar.com> Cc: Christian Brauner <brauner@kernel.org> Cc: David Hildenbrand <david@redhat.com> Cc: Ma Wupeng <mawupeng1@huawei.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.