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The source for the Linux kernel used in Windows Subsystem for Linux 2 (WSL2)
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Armin Wolf 1cbaf4c793 ACPI: processor_idle: Fix memory leak in acpi_processor_power_exit() 
[ Upstream commit e18afcb7b2a12b635ac10081f943fcf84ddacc51 ]

After unregistering the CPU idle device, the memory associated with
it is not freed, leading to a memory leak:

unreferenced object 0xffff896282f6c000 (size 1024):
  comm "swapper/0", pid 1, jiffies 4294893170
  hex dump (first 32 bytes):
    00 00 00 00 0b 00 00 00 00 00 00 00 00 00 00 00  ................
    00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00  ................
  backtrace (crc 8836a742):
    [<ffffffff993495ed>] kmalloc_trace+0x29d/0x340
    [<ffffffff9972f3b3>] acpi_processor_power_init+0xf3/0x1c0
    [<ffffffff9972d263>] __acpi_processor_start+0xd3/0xf0
    [<ffffffff9972d2bc>] acpi_processor_start+0x2c/0x50
    [<ffffffff99805872>] really_probe+0xe2/0x480
    [<ffffffff99805c98>] __driver_probe_device+0x78/0x160
    [<ffffffff99805daf>] driver_probe_device+0x1f/0x90
    [<ffffffff9980601e>] __driver_attach+0xce/0x1c0
    [<ffffffff99803170>] bus_for_each_dev+0x70/0xc0
    [<ffffffff99804822>] bus_add_driver+0x112/0x210
    [<ffffffff99807245>] driver_register+0x55/0x100
    [<ffffffff9aee4acb>] acpi_processor_driver_init+0x3b/0xc0
    [<ffffffff990012d1>] do_one_initcall+0x41/0x300
    [<ffffffff9ae7c4b0>] kernel_init_freeable+0x320/0x470
    [<ffffffff99b231f6>] kernel_init+0x16/0x1b0
    [<ffffffff99042e6d>] ret_from_fork+0x2d/0x50

Fix this by freeing the CPU idle device after unregistering it.

Fixes: 3d339dcbb5 ("cpuidle / ACPI : move cpuidle_device field out of the acpi_processor_power structure")
Signed-off-by: Armin Wolf <W_Armin@gmx.de>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
 		2024-03-26 18:21:19 -04:00
Documentation platform/x86: asus-wmi: Document the dgpu_disable sysfs attribute 2024-03-01 13:21:52 +01:00
LICENSES LICENSES/dual/CC-BY-4.0: Git rid of "smart quotes" 2021-07-15 06:31:24 -06:00
arch arm64: dts: mediatek: mt7622: add missing "device_type" to memory nodes 2024-03-26 18:21:19 -04:00
block block: sed-opal: handle empty atoms when parsing response 2024-03-26 18:21:13 -04:00
certs certs/blacklist_hashes.c: fix const confusion in certs blacklist 2022-06-22 14:22:01 +02:00
crypto crypto: api - Disallow identical driver names 2024-02-23 08:54:23 +01:00
drivers ACPI: processor_idle: Fix memory leak in acpi_processor_power_exit() 2024-03-26 18:21:19 -04:00
fs fs/select: rework stack allocation hack for clang 2024-03-26 18:21:15 -04:00
include bpf: Mark bpf_spin_{lock,unlock}() helpers with notrace correctly 2024-03-26 18:21:19 -04:00
init rootfs: Fix support for rootfstype= when root= is given 2024-01-25 14:52:48 -08:00
io_uring io_uring: drop any code related to SCM_RIGHTS 2024-03-26 18:21:11 -04:00
ipc ipc/sem: Fix dangling sem_array access in semtimedop race 2022-12-08 11:28:45 +01:00
kernel bpf: Mark bpf_spin_{lock,unlock}() helpers with notrace correctly 2024-03-26 18:21:19 -04:00
lib net: blackhole_dev: fix build warning for ethh set but not used 2024-03-26 18:21:18 -04:00
mm userfaultfd: fix mmap_changing checking in mfill_atomic_hugetlb 2024-03-01 13:21:43 +01:00
net ipv6: mcast: remove one synchronize_net() barrier in ipv6_mc_down() 2024-03-26 18:21:19 -04:00
samples samples/hw_breakpoint: fix building without module unloading 2023-09-23 11:10:01 +02:00
scripts gen_compile_commands: fix invalid escape sequence warning 2024-03-26 18:21:12 -04:00
security tomoyo: fix UAF write bug in tomoyo_write_control() 2024-03-06 14:38:48 +00:00
sound ASoC: wm8962: Fix up incorrect error message in wm8962_set_fll 2024-03-26 18:21:14 -04:00
tools bpftool: Silence build warning about calloc() 2024-03-26 18:21:17 -04:00
usr usr/include/Makefile: add linux/nfc.h to the compile-test coverage 2022-02-01 17:27:15 +01:00
virt KVM: Grab a reference to KVM for VM and vCPU stats file descriptors 2023-08-03 10:22:40 +02:00
.clang-format clang-format: Update with the latest for_each macro list 2021-05-12 23:32:39 +02:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.get_maintainer.ignore Opt out of scripts/get_maintainer.pl 2019-05-16 10:53:40 -07:00
.gitattributes .gitattributes: use 'dts' diff driver for dts files 2019-12-04 19:44:11 -08:00
.gitignore .gitignore: ignore only top-level modules.builtin 2021-05-02 00:43:35 +09:00
.mailmap mailmap: add Andrej Shadura 2021-10-18 20:22:03 -10:00
COPYING COPYING: state that all contributions really are covered by this file 2020-02-10 13:32:20 -08:00
CREDITS MAINTAINERS: Move Daniel Drake to credits 2021-09-21 08:34:58 +03:00
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 iio: stx104: Move to addac subdirectory 2023-08-26 14:23:27 +02:00
Makefile Linux 5.15.152 2024-03-15 14:30:36 -04:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.