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Filename Latest commit message Latest commit date
Yang Yingliang 8384c4a7bc hwmon: Fix possible memleak in __hwmon_device_register() 
[ Upstream commit ada61aa0b1184a8fda1a89a340c7d6cc4e59aee5 ]

I got memory leak as follows when doing fault injection test:

unreferenced object 0xffff888102740438 (size 8):
  comm "27", pid 859, jiffies 4295031351 (age 143.992s)
  hex dump (first 8 bytes):
    68 77 6d 6f 6e 30 00 00                          hwmon0..
  backtrace:
    [<00000000544b5996>] __kmalloc_track_caller+0x1a6/0x300
    [<00000000df0d62b9>] kvasprintf+0xad/0x140
    [<00000000d3d2a3da>] kvasprintf_const+0x62/0x190
    [<000000005f8f0f29>] kobject_set_name_vargs+0x56/0x140
    [<00000000b739e4b9>] dev_set_name+0xb0/0xe0
    [<0000000095b69c25>] __hwmon_device_register+0xf19/0x1e50 [hwmon]
    [<00000000a7e65b52>] hwmon_device_register_with_info+0xcb/0x110 [hwmon]
    [<000000006f181e86>] devm_hwmon_device_register_with_info+0x85/0x100 [hwmon]
    [<0000000081bdc567>] tmp421_probe+0x2d2/0x465 [tmp421]
    [<00000000502cc3f8>] i2c_device_probe+0x4e1/0xbb0
    [<00000000f90bda3b>] really_probe+0x285/0xc30
    [<000000007eac7b77>] __driver_probe_device+0x35f/0x4f0
    [<000000004953d43d>] driver_probe_device+0x4f/0x140
    [<000000002ada2d41>] __device_attach_driver+0x24c/0x330
    [<00000000b3977977>] bus_for_each_drv+0x15d/0x1e0
    [<000000005bf2a8e3>] __device_attach+0x267/0x410

When device_register() returns an error, the name allocated in
dev_set_name() will be leaked, the put_device() should be used
instead of calling hwmon_dev_release() to give up the device
reference, then the name will be freed in kobject_cleanup().

Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: bab2243ce1 ("hwmon: Introduce hwmon_device_register_with_groups")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20211012112758.2681084-1-yangyingliang@huawei.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-11-17 09:48:37 +01:00
arch parisc/kgdb: add kgdb_roundup() to make kgdb work with idle polling 2021-11-17 09:48:33 +01:00
block block: remove inaccurate requeue check 2021-11-17 09:48:31 +01:00
certs certs: Trigger creation of RSA module signing key if it's not an RSA key 2021-09-15 09:47:29 +02:00
crypto crypto: ecc - fix CRYPTO_DEFAULT_RNG dependency 2021-11-17 09:48:36 +01:00
Documentation xen/balloon: add late_initcall_sync() for initial ballooning done 2021-11-17 09:48:25 +01:00
drivers hwmon: Fix possible memleak in __hwmon_device_register() 2021-11-17 09:48:37 +01:00
fs btrfs: do not take the uuid_mutex in btrfs_rm_device 2021-11-17 09:48:33 +01:00
include task_stack: Fix end_of_stack() for architectures with upwards-growing stack 2021-11-17 09:48:33 +01:00
init kbuild: add CONFIG_LD_IS_LLD 2021-06-30 08:47:44 -04:00
ipc ipc/util.c: sysvipc_find_ipc() incorrectly updates position index 2020-05-20 08:20:16 +02:00
kernel kprobes: Do not use local variable when creating debugfs file 2021-11-17 09:48:36 +01:00
lib lib/xz: Validate the value before assigning it to an enum variable 2021-11-17 09:48:31 +01:00
LICENSES
mm mm, slub: fix potential memoryleak in kmem_cache_open() 2021-10-27 09:54:28 +02:00
net net, neigh: Fix NTF_EXT_LEARNED in combination with NTF_USE 2021-11-17 09:48:37 +01:00
samples samples: bpf: Fix tracex7 error raised on the missing argument 2021-09-22 12:26:30 +02:00
scripts leaking_addresses: Always print a trailing newline 2021-11-17 09:48:31 +01:00
security smackfs: use __GFP_NOFAIL for smk_cipso_doi() 2021-11-17 09:48:32 +01:00
sound ALSA: mixer: fix deadlock in snd_mixer_oss_set_volume 2021-11-17 09:48:25 +01:00
tools selftests/bpf: Fix strobemeta selftest regression 2021-11-17 09:48:33 +01:00
usr
virt KVM: do not shrink halt_poll_ns below grow_start 2021-10-09 14:39:50 +02:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS Documentation/llvm: add documentation on building w/ Clang/LLVM 2020-08-26 10:40:46 +02:00
Makefile Linux 5.4.159 2021-11-12 14:43:05 +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.