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Filename Latest commit message Latest commit date
Dave Gerlach 22946b8397 soc: ti: wkup_m3_ipc: Fix race condition with rproc_boot
[ Upstream commit 03729cfa0d543bc996bf959e762ec999afc8f3d2 ]

Any user of wkup_m3_ipc calls wkup_m3_ipc_get to get a handle and this
checks the value of the static variable m3_ipc_state to see if the
wkup_m3 is ready. Currently this is populated during probe before
rproc_boot has been called, meaning there is a window of time that
wkup_m3_ipc_get can return a valid handle but the wkup_m3 itself is not
ready, leading to invalid IPC calls to the wkup_m3 and system
instability.

To avoid this, move the population of the m3_ipc_state variable until
after rproc_boot has succeeded to guarantee a valid and usable handle
is always returned.

Reported-by: Suman Anna <s-anna@ti.com>
Signed-off-by: Dave Gerlach <d-gerlach@ti.com>
Acked-by: Santosh Shilimkar <ssantosh@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2020-02-05 21:22:43 +00:00
arch ARM: dts: beagle-x15-common: Model 5V0 regulator 2020-02-05 21:22:42 +00:00
block
certs
crypto crypto: pcrypt - Fix user-after-free on module unload 2020-02-01 09:34:52 +00:00
Documentation PM / devfreq: Add new name attribute for sysfs 2020-02-05 21:22:40 +00:00
drivers soc: ti: wkup_m3_ipc: Fix race condition with rproc_boot 2020-02-05 21:22:43 +00:00
fs reiserfs: Fix memory leak of journal device string 2020-02-05 21:22:40 +00:00
include bus: ti-sysc: Fix missing force mstandby quirk handling 2020-02-01 09:34:51 +00:00
init Revert "um: Enable CONFIG_CONSTRUCTORS" 2020-02-01 09:34:53 +00:00
ipc
kernel cgroup: Prevent double killing of css when enabling threaded cgroup 2020-02-05 21:22:42 +00:00
lib lib: Reduce user_access_begin() boundaries in strncpy_from_user() and strnlen_user() 2020-01-29 16:45:29 +01:00
LICENSES
mm mm/mempolicy.c: fix out of bounds write in mpol_parse_str() 2020-02-05 21:22:40 +00:00
net Bluetooth: Fix race condition in hci_release_sock() 2020-02-05 21:22:42 +00:00
samples
scripts
security tomoyo: Use atomic_t for statistics counter 2020-02-05 21:22:41 +00:00
sound ALSA: hda/realtek - Move some alc236 pintbls to fallback table 2020-02-01 09:34:50 +00:00
tools tools lib: Fix builds when glibc contains strlcpy() 2020-02-05 21:22:40 +00:00
usr
virt
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS
Makefile Linux 5.4.17 2020-02-01 09:34:53 +00:00
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.

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.