crypto · a61ffc11d56ada4c466ff02b18e9c757c46399a7 · felixkhals / Kernel Program Behaviour Models

crypto: algif_skcipher - only call put_page on referenced and used pages

Stephan Mueller authored 7 years ago

For asynchronous operation, SGs are allocated without a page mapped to
them or with a page that is not used (ref-counted). If the SGL is freed,
the code must only call put_page for an SG if there was a page assigned
and ref-counted in the first place.

This fixes a kernel crash when using io_submit with more than one iocb
using the sendmsg and sendpage (vmsplice/splice) interface.

Cc: <stable@vger.kernel.org>
Signed-off-by: Stephan Mueller <smueller@chronox.de>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

445a5827

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445a5827 7 years ago

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Name	Last commit	Last update
..
asymmetric_keys
async_tx
.gitignore
842.c
Kconfig
Makefile
ablk_helper.c
ablkcipher.c
acompress.c
aead.c
aes_generic.c
aes_ti.c
af_alg.c
ahash.c
akcipher.c
algapi.c
algboss.c
algif_aead.c
algif_hash.c
algif_rng.c
algif_skcipher.c
ansi_cprng.c
anubis.c
api.c
arc4.c
authenc.c
authencesn.c
blkcipher.c
blowfish_common.c
blowfish_generic.c
camellia_generic.c
cast5_generic.c
cast6_generic.c
cast_common.c
cbc.c
ccm.c
chacha20_generic.c
chacha20poly1305.c
cipher.c
cmac.c
compress.c
crc32_generic.c
crc32c_generic.c
crct10dif_common.c
crct10dif_generic.c
cryptd.c
crypto_engine.c
crypto_null.c
crypto_user.c
crypto_wq.c
ctr.c
cts.c
deflate.c
des_generic.c
dh.c
dh_helper.c
drbg.c
ecb.c
ecc.c
ecc.h
ecc_curve_defs.h
ecdh.c
ecdh_helper.c
echainiv.c
fcrypt.c
fips.c
gcm.c
gf128mul.c
ghash-generic.c
hash_info.c
hmac.c
internal.h
jitterentropy-kcapi.c
jitterentropy.c
keywrap.c
khazad.c
kpp.c
lrw.c
lz4.c
lz4hc.c
lzo.c
mcryptd.c
md4.c
md5.c
memneq.c
michael_mic.c
pcbc.c
pcrypt.c
poly1305_generic.c
proc.c
ripemd.h
rmd128.c
rmd160.c
rmd256.c
rmd320.c
rng.c
rsa-pkcs1pad.c
rsa.c
rsa_helper.c
rsaprivkey.asn1