https://github.com/torvalds/linux
Revision 1bedcf22c081a6e9943f09937b2da8d3ef52d20d authored by lei he on 19 September 2022, 07:51:58 UTC, committed by Michael S. Tsirkin on 27 September 2022, 22:30:48 UTC
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>
1 parent db5db1a
Tip revision: 1bedcf22c081a6e9943f09937b2da8d3ef52d20d authored by lei he on 19 September 2022, 07:51:58 UTC
virtio-crypto: fix memory-leak
virtio-crypto: fix memory-leak
Tip revision: 1bedcf2
File | Mode | Size |
---|---|---|
Documentation | ||
LICENSES | ||
arch | ||
block | ||
certs | ||
crypto | ||
drivers | ||
fs | ||
include | ||
init | ||
io_uring | ||
ipc | ||
kernel | ||
lib | ||
mm | ||
net | ||
samples | ||
scripts | ||
security | ||
sound | ||
tools | ||
usr | ||
virt | ||
.clang-format | -rw-r--r-- | 19.9 KB |
.cocciconfig | -rw-r--r-- | 59 bytes |
.get_maintainer.ignore | -rw-r--r-- | 151 bytes |
.gitattributes | -rw-r--r-- | 62 bytes |
.gitignore | -rw-r--r-- | 1.9 KB |
.mailmap | -rw-r--r-- | 23.7 KB |
COPYING | -rw-r--r-- | 496 bytes |
CREDITS | -rw-r--r-- | 99.1 KB |
Kbuild | -rw-r--r-- | 1.3 KB |
Kconfig | -rw-r--r-- | 555 bytes |
MAINTAINERS | -rw-r--r-- | 664.7 KB |
Makefile | -rw-r--r-- | 64.4 KB |
README | -rw-r--r-- | 727 bytes |
Computing file changes ...