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ddf077f140
Commit 35306eb238 ("af_unix: fix races in sk_peer_pid and sk_peer_cred
accesses") was backported to 4.19.209 and it adds a new field to struct
sock. We want to keep this commit, so rework it using the reserved
fields we have set up for this very issue.
However, putting a spinlock_t into a 64bit value breaks when building
with some debugging options enabled, so we have to disable them when
doing build testing for the allmodconfig builds. In order to do that,
the following config options are forced off:
DEBUG_SPINLOCK
DEBUG_LOCK_ALLOC
LOCK_STAT
DEBUG_WW_MUTEX_SLOWPATH
DEBUG_LOCK_ALLOC
PROVE_LOCKING
We only really want to disable DEBUG_SPINLOCK and DEBUG_LOCK_ALLOC as
those affect the size of spinlock_t, but the other options need to be
disabled as well because they try to force on the locking debug config
options when selected.
Note, this does not affect any device's behavior, those options are only
being disabled for the test systems when doing allmodconfig builds.
They are not enabled in the normal GKI builds, so all is fine there.
Bug: 161946584
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I23df70a6bcbbc9d773e790cdf0377c1c67cdf682
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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.