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Linux kernel for uConsole
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Tejun Heo ebd9fbf9e7 workqueue: Fix pwq ref leak in rescuer_thread() 
commit e66b39af00 upstream.

008847f66c ("workqueue: allow rescuer thread to do more work.") made
the rescuer worker requeue the pwq immediately if there may be more
work items which need rescuing instead of waiting for the next mayday
timer expiration.  Unfortunately, it doesn't check whether the pwq is
already on the mayday list and unconditionally gets the ref and moves
it onto the list.  This doesn't corrupt the list but creates an
additional reference to the pwq.  It got queued twice but will only be
removed once.

This leak later can trigger pwq refcnt warning on workqueue
destruction and prevent freeing of the workqueue.

Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: "Williams, Gerald S" <gerald.s.williams@intel.com>
Cc: NeilBrown <neilb@suse.de>
Cc: stable@vger.kernel.org # v3.19+
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-12-17 20:34:54 +01:00
arch ARM: dts: pandora-common: define wl1251 as child node of mmc3 2019-12-17 20:34:36 +01:00
block
certs
crypto
Documentation USB: documentation: flags on usb-storage versus UAS 2019-12-17 20:34:30 +01:00
drivers dm zoned: reduce overhead of backing device checks 2019-12-17 20:34:53 +01:00
firmware
fs ovl: relax WARN_ON() on rename to self 2019-12-17 20:34:51 +01:00
include
init
ipc
kernel workqueue: Fix pwq ref leak in rescuer_thread() 2019-12-17 20:34:54 +01:00
lib lib: raid6: fix awk build warnings 2019-12-17 20:34:51 +01:00
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Makefile Linux 4.19.89 2019-12-13 08:52:59 +01:00
README

README 

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.