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Shang XiaoJing 71aeb8d01a tracing: kprobe: Fix memory leak in test_gen_kprobe/kretprobe_cmd()
commit 66f0919c95 upstream.

test_gen_kprobe_cmd() only free buf in fail path, hence buf will leak
when there is no failure. Move kfree(buf) from fail path to common path
to prevent the memleak. The same reason and solution in
test_gen_kretprobe_cmd().

unreferenced object 0xffff888143b14000 (size 2048):
  comm "insmod", pid 52490, jiffies 4301890980 (age 40.553s)
  hex dump (first 32 bytes):
    70 3a 6b 70 72 6f 62 65 73 2f 67 65 6e 5f 6b 70  p:kprobes/gen_kp
    72 6f 62 65 5f 74 65 73 74 20 64 6f 5f 73 79 73  robe_test do_sys
  backtrace:
    [<000000006d7b836b>] kmalloc_trace+0x27/0xa0
    [<0000000009528b5b>] 0xffffffffa059006f
    [<000000008408b580>] do_one_initcall+0x87/0x2a0
    [<00000000c4980a7e>] do_init_module+0xdf/0x320
    [<00000000d775aad0>] load_module+0x3006/0x3390
    [<00000000e9a74b80>] __do_sys_finit_module+0x113/0x1b0
    [<000000003726480d>] do_syscall_64+0x35/0x80
    [<000000003441e93b>] entry_SYSCALL_64_after_hwframe+0x46/0xb0

Link: https://lore.kernel.org/all/20221102072954.26555-1-shangxiaojing@huawei.com/

Fixes: 64836248dd ("tracing: Add kprobe event command generation test module")
Cc: stable@vger.kernel.org
Signed-off-by: Shang XiaoJing <shangxiaojing@huawei.com>
Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-11-10 18:17:33 +01:00
arch arm64: dts: juno: Add thermal critical trip points 2022-11-10 18:17:30 +01:00
block blk-mq: Fix kmemleak in blk_mq_init_allocated_queue 2022-11-10 18:17:29 +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 docs/process/howto: Replace C89 with C11 2022-11-10 18:17:15 +01:00
drivers cxl/region: Fix 'distance' calculation with passthrough ports 2022-11-10 18:17:32 +01:00
fs btrfs: fix a memory allocation failure test in btrfs_submit_direct 2022-11-10 18:17:31 +01:00
include fscrypt: fix keyring memory leak on mount failure 2022-11-10 18:17:30 +01:00
init arm64 fixes for -rc3 2022-08-26 11:32:53 -07:00
io_uring io_uring: don't iopoll from io_ring_ctx_wait_and_kill() 2022-11-10 18:17:25 +01:00
ipc ipc: mqueue: fix possible memory leak in init_mqueue_fs() 2022-10-21 12:38:55 +02:00
kernel tracing: kprobe: Fix memory leak in test_gen_kprobe/kretprobe_cmd() 2022-11-10 18:17:33 +01:00
lib lib/Kconfig.debug: Add check for non-constant .{s,u}leb128 support to DWARF5 2022-10-21 12:39:29 +02:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm mm: prep_compound_tail() clear page->private 2022-11-04 00:00:23 +09:00
net Bluetooth: L2CAP: Fix attempting to access uninitialized memory 2022-11-10 18:17:30 +01:00
samples Tracing updates for 5.20 / 6.0 2022-08-05 09:41:12 -07:00
scripts kbuild: rpm-pkg: fix breakage when V=1 is used 2022-10-21 12:39:01 +02:00
security selinux: enable use of both GFP_KERNEL and GFP_ATOMIC in convert_context() 2022-10-29 10:08:29 +02:00
sound ALSA: aoa: Fix I2S device accounting 2022-11-04 00:00:33 +09:00
tools tools/nolibc: Fix missing strlen() definition and infinite loop with gcc-12 2022-11-10 18:17:16 +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: Add support for arch compat vm ioctls 2022-10-29 10:08:30 +02:00
.clang-format PCI/DOE: Add DOE mailbox support functions 2022-07-19 15:38:04 -07:00
.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 6.0.7 2022-11-04 00:00:35 +09:00
README Drop all 00-INDEX files from Documentation/ 2018-09-09 15:08:58 -06:00

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.