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T.J. Mercier 8e1ffb2579 drm/syncobj: Fix syncobj leak in drm_syncobj_eventfd_ioctl
commit 8c7c44be57 upstream.

A syncobj reference is taken in drm_syncobj_find, but not released if
eventfd_ctx_fdget or kzalloc fails. Put the reference in these error
paths.

Reported-by: Xingyu Jin <xingyuj@google.com>
Fixes: c7a4722971 ("drm/syncobj: add IOCTL to register an eventfd")
Signed-off-by: T.J. Mercier <tjmercier@google.com>
Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@igalia.com>
Reviewed-by. Christian König <christian.koenig@amd.com>
CC: stable@vger.kernel.org # 6.6+
Link: https://patchwork.freedesktop.org/patch/msgid/20240909205400.3498337-1-tjmercier@google.com
Signed-off-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2024-09-18 19:24:09 +02:00
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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 Restructured Text 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.