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lei he 1bedcf22c0 virtio-crypto: fix memory-leak
Fix memory-leak for virtio-crypto akcipher request, this problem is
introduced by 59ca6c93387d3(virtio-crypto: implement RSA algorithm).
The leak can be reproduced and tested with the following script
inside virtual machine:

#!/bin/bash

LOOP_TIMES=10000

# required module: pkcs8_key_parser, virtio_crypto
modprobe pkcs8_key_parser # if CONFIG_PKCS8_PRIVATE_KEY_PARSER=m
modprobe virtio_crypto # if CONFIG_CRYPTO_DEV_VIRTIO=m
rm -rf /tmp/data
dd if=/dev/random of=/tmp/data count=1 bs=230

# generate private key and self-signed cert
openssl req -nodes -x509 -newkey rsa:2048 -keyout key.pem \
		-outform der -out cert.der  \
		-subj "/C=CN/ST=GD/L=SZ/O=vihoo/OU=dev/CN=always.com/emailAddress=yy@always.com"
# convert private key from pem to der
openssl pkcs8 -in key.pem -topk8 -nocrypt -outform DER -out key.der

# add key
PRIV_KEY_ID=`cat key.der | keyctl padd asymmetric test_priv_key @s`
echo "priv key id = "$PRIV_KEY_ID
PUB_KEY_ID=`cat cert.der | keyctl padd asymmetric test_pub_key @s`
echo "pub key id = "$PUB_KEY_ID

# query key
keyctl pkey_query $PRIV_KEY_ID 0
keyctl pkey_query $PUB_KEY_ID 0

# here we only run pkey_encrypt becasuse it is the fastest interface
function bench_pub() {
	keyctl pkey_encrypt $PUB_KEY_ID 0 /tmp/data enc=pkcs1 >/tmp/enc.pub
}

# do bench_pub in loop to obtain the memory leak
for (( i = 0; i < ${LOOP_TIMES}; ++i )); do
	bench_pub
done

Signed-off-by: lei he <helei.sig11@bytedance.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Gonglei <arei.gonglei@huawei.com>
Message-Id: <20220919075158.3625-1-helei.sig11@bytedance.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2022-09-27 18:30:48 -04:00
arch arm64 fixes for -rc7 2022-09-23 15:28:51 -07:00
block block-6.0-2022-09-22 2022-09-24 08:22:53 -07:00
certs certs: make system keyring depend on built-in x509 parser 2022-09-24 04:31:18 +09:00
crypto crypto: blake2b: effectively disable frame size warning 2022-08-10 17:59:11 -07:00
Documentation I2C driver bugfixes for mlxbf and imx, a few documentation fixes after 2022-09-25 08:44:46 -07:00
drivers virtio-crypto: fix memory-leak 2022-09-27 18:30:48 -04:00
fs Ext4 regression and bug fixes: 2022-09-25 09:03:31 -07:00
include TTY/Serial driver fixes for 6.0-rc7 2022-09-24 08:42:55 -07:00
init arm64 fixes for -rc3 2022-08-26 11:32:53 -07:00
io_uring io_uring-6.0-2022-09-23 2022-09-24 08:27:08 -07:00
ipc Updates to various subsystems which I help look after. lib, ocfs2, 2022-08-07 10:03:24 -07:00
kernel Cgroup fixes for v6.0-rc6 2022-09-24 08:36:10 -07:00
lib Makefile.debug: re-enable debug info for .S files 2022-09-24 11:19:19 +09:00
LICENSES LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers 2021-12-16 14:33:10 +01:00
mm slab fixes for 6.0-rc7 2022-09-22 14:37:58 -07:00
net Including fixes from wifi, netfilter and can. 2022-09-22 10:58:13 -07:00
samples Tracing updates for 5.20 / 6.0 2022-08-05 09:41:12 -07:00
scripts Makefile.debug: re-enable debug info for .S files 2022-09-24 11:19:19 +09:00
security Landlock fix for v6.0-rc4 2022-09-02 15:24:08 -07:00
sound Revert "ALSA: usb-audio: Split endpoint setups for hw_params and prepare" 2022-09-20 13:40:18 +02:00
tools dax-and-nvdimm-fixes-v6.0-final 2022-09-25 08:53:52 -07:00
usr Not a lot of material this cycle. Many singleton patches against various 2022-05-27 11:22:03 -07:00
virt KVM: Drop unnecessary initialization of "ops" in kvm_ioctl_create_device() 2022-08-19 04:05:43 -04:00
.clang-format PCI/DOE: Add DOE mailbox support functions 2022-07-19 15:38:04 -07:00
.cocciconfig scripts: add Linux .cocciconfig for coccinelle 2016-07-22 12:13:39 +02:00
.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 Devicetree fixes for v6.0, take 2: 2022-09-14 10:22:39 +01:00
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 I2C driver bugfixes for mlxbf and imx, a few documentation fixes after 2022-09-25 08:44:46 -07:00
Makefile Linux 6.0-rc7 2022-09-25 14:01:02 -07:00
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.