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Huisong Li ba3ffb758c mailbox: pcc: Reset pcc_chan_count to zero in case of PCC probe failure 
[ Upstream commit 6d7d3c2874 ]

Currently, 'pcc_chan_count' is remains set to a non-zero value if PCC
subspaces are parsed successfully but something else fail later during
the initial PCC probing phase. This will result in pcc_mbox_request_channel
trying to access the resources that are not initialised or allocated and
may end up in a system crash.

Reset pcc_chan_count to 0 when the PCC probe fails in order to prevent
the possible issue as described above.

Fixes: ce028702dd ("mailbox: pcc: Move bulk of PCCT parsing into pcc_mbox_probe")
Signed-off-by: Huisong Li <lihuisong@huawei.com>
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-12-31 13:25:43 +01:00
arch MIPS: vpe-cmp: fix possible memory leak while module exiting 2022-12-31 13:25:43 +01:00
block block: make blk_set_default_limits() private 2022-12-02 17:43:16 +01:00
certs certs: make system keyring depend on built-in x509 parser 2022-09-24 04:31:18 +09:00
crypto crypto: akcipher - default implementation for setting a private key 2022-10-21 12:38:59 +02:00
Documentation x86/split_lock: Add sysctl to control the misery mode 2022-12-31 13:25:42 +01:00
drivers mailbox: pcc: Reset pcc_chan_count to zero in case of PCC probe failure 2022-12-31 13:25:43 +01:00
fs ocfs2: fix memory leak in ocfs2_stack_glue_init() 2022-12-31 13:25:43 +01:00
include timerqueue: Use rb_entry_safe() in timerqueue_getnext() 2022-12-31 13:25:43 +01:00
init init/Kconfig: fix CC_HAS_ASM_GOTO_TIED_OUTPUT test with dash 2022-12-02 17:43:11 +01:00
io_uring io_uring: Fix a null-ptr-deref in io_tctx_exit_cb() 2022-12-14 11:40:53 +01:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:30:22 +01:00
kernel perf: Fix possible memleak in pmu_dev_alloc() 2022-12-31 13:25:42 +01:00
lib lib/fonts: fix undefined behavior in bit shift for get_default_font 2022-12-31 13:25:43 +01:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm tmpfs: fix data loss from failed fallocate 2022-12-14 11:40:52 +01:00
net Bluetooth: L2CAP: Fix u8 overflow 2022-12-21 17:41:15 +01:00
samples Tracing updates for 5.20 / 6.0 2022-08-05 09:41:12 -07:00
scripts scripts/faddr2line: Fix regression in name resolution on ppc64le 2022-12-08 11:30:14 +01:00
security KEYS: encrypted: fix key instantiation with user-provided data 2022-12-21 17:41:15 +01:00
sound ALSA: hda/realtek: fix mute/micmute LEDs for a HP ProBook 2022-12-21 17:41:14 +01:00
tools selftests/efivarfs: Add checking of the test return value 2022-12-31 13:25:43 +01:00
usr Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
virt KVM: Update gfn_to_pfn_cache khva when it moves within the same page 2022-12-02 17:43:13 +01:00
.clang-format inet: ping: use hlist_nulls rcu iterator during lookup 2022-12-14 11:40:58 +01:00
.cocciconfig
.get_maintainer.ignore get_maintainer: add Alan to .get_maintainer.ignore 2022-08-20 15:17:44 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore kbuild: split the second line of *.mod into *.usyms 2022-05-08 03:16:59 +09:00
.mailmap Qualcomm ARM64 DTS fixes for 6.0 2022-09-23 16:44:37 +02:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS drm for 5.20/6.0 2022-08-03 19:52:08 -07:00
Kbuild kbuild: rename hostprogs-y/always to hostprogs/always-y 2020-02-04 01:53:07 +09:00
Kconfig kbuild: ensure full rebuild when the compiler is updated 2020-05-12 13:28:33 +09:00
MAINTAINERS One MAINTAINERS update, two MM fixes, both cc:stable 2022-10-01 09:13:29 -07:00
Makefile Linux 6.0.15 2022-12-21 17:41:16 +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.

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.