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e44362ab03
linux/drivers/crypto
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Gustavo A. R. Silva e44362ab03 crypto: img-hash - Replace zero-length array with flexible-array member 
The current codebase makes use of the zero-length array language
extension to the C90 standard, but the preferred mechanism to declare
variable-length types such as these ones is a flexible array member[1][2],
introduced in C99:

struct foo {
        int stuff;
        struct boo array[];
};

By making use of the mechanism above, we will get a compiler warning
in case the flexible array does not occur last in the structure, which
will help us prevent some kind of undefined behavior bugs from being
inadvertently introduced[3] to the codebase from now on.

Also, notice that, dynamic memory allocations won't be affected by
this change:

"Flexible array members have incomplete type, and so the sizeof operator
may not be applied. As a quirk of the original implementation of
zero-length arrays, sizeof evaluates to zero."[1]

This issue was found with the help of Coccinelle.

[1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html
[2] https://github.com/KSPP/linux/issues/21
[3] commit 7649773293 ("cxgb3/l2t: Fix undefined behaviour")

Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2020-02-22 09:25:48 +08:00
..
allwinner crypto: allwinner - remove redundant platform_get_irq error message 2020-02-13 17:05:26 +08:00
amcc crypto: crypto4xx - use GFP_KERNEL for big allocations 2020-01-09 11:30:53 +08:00
amlogic crypto: amlogic - fix removal of module 2020-01-16 15:18:12 +08:00
axis crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
bcm crypto: remove propagation of CRYPTO_TFM_RES_* flags 2020-01-09 11:30:53 +08:00
caam crypto: caam - add crypto_engine support for HASH algorithms 2020-02-22 09:25:48 +08:00
cavium crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
ccp crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
ccree crypto: ccree - use devm_kzalloc() for hash data 2020-02-22 09:25:46 +08:00
chelsio crypto: chelsio - remove extra allocation for chtls_dev 2020-02-22 09:25:41 +08:00
hisilicon crypto: hisilicon - register zip engine to uacce 2020-02-22 09:25:42 +08:00
inside-secure crypto: remove propagation of CRYPTO_TFM_RES_* flags 2020-01-09 11:30:53 +08:00
marvell crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
mediatek crypto: remove propagation of CRYPTO_TFM_RES_* flags 2020-01-09 11:30:53 +08:00
nx crypto: nx - remove stale comment referring to the blkcipher walk API 2019-11-17 09:02:49 +08:00
qat crypto: qat - spelling s/Decrytp/Decrypt/ 2020-02-22 09:25:47 +08:00
qce crypto: qce - handle AES-XTS cases that qce fails 2020-02-13 17:05:27 +08:00
rockchip crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
stm32 crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
ux500 crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
virtio crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
vmx crypto: vmx - reject xts inputs that are too short 2020-01-16 15:18:13 +08:00
atmel-aes-regs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
atmel-aes.c crypto: atmel-{aes,sha,tdes} - Retire crypto_platform_data 2020-01-22 16:21:09 +08:00
atmel-authenc.h crypto: remove propagation of CRYPTO_TFM_RES_* flags 2020-01-09 11:30:53 +08:00
atmel-ecc.c crypto: atmel-ecc - factor out code that can be shared 2019-05-30 15:35:45 +08:00
atmel-i2c.c crypto: atmel - Fix -Wunused-const-variable warning 2019-08-30 18:05:31 +10:00
atmel-i2c.h crypto: atmel - Fix -Wunused-const-variable warning 2019-08-30 18:05:31 +10:00
atmel-sha204a.c crypto: atmel-sha204a - Use device-managed registration API 2019-08-02 14:43:59 +10:00
atmel-sha-regs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
atmel-sha.c crypto: atmel-{aes,sha,tdes} - Retire crypto_platform_data 2020-01-22 16:21:09 +08:00
atmel-tdes-regs.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
atmel-tdes.c crypto: atmel-{aes,sha,tdes} - Retire crypto_platform_data 2020-01-22 16:21:09 +08:00
exynos-rng.c crypto: exynos - use devm_platform_ioremap_resource() to simplify code 2019-08-09 15:11:59 +10:00
geode-aes.c crypto: remove propagation of CRYPTO_TFM_RES_* flags 2020-01-09 11:30:53 +08:00
geode-aes.h crypto: geode-aes - convert to skcipher API and make thread-safe 2019-10-23 19:46:56 +11:00
hifn_795x.c remove ioremap_nocache and devm_ioremap_nocache 2020-01-06 09:45:59 +01:00
img-hash.c crypto: img-hash - Replace zero-length array with flexible-array member 2020-02-22 09:25:48 +08:00
ixp4xx_crypto.c crypto: remove CRYPTO_TFM_RES_WEAK_KEY 2020-01-09 11:30:53 +08:00
Kconfig crypto: qce - use AES fallback for small requests 2020-02-13 17:05:27 +08:00
Makefile crypto: sun4i-ss - Move to Allwinner directory 2019-11-01 13:38:31 +08:00
mxs-dcp.c crypto: remove propagation of CRYPTO_TFM_RES_* flags 2020-01-09 11:30:53 +08:00
n2_asm.S License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
n2_core.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
n2_core.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
omap-aes-gcm.c crypto: omap-aes-gcm - convert to use crypto engine 2019-12-11 16:37:00 +08:00
omap-aes.c crypto: omap-aes-gcm - convert to use crypto engine 2019-12-11 16:37:00 +08:00
omap-aes.h crypto: omap-aes-gcm - convert to use crypto engine 2019-12-11 16:37:00 +08:00
omap-crypto.c crypto: omap-crypto - copy the temporary data to output buffer properly 2019-12-11 16:37:00 +08:00
omap-crypto.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 500 2019-06-19 17:09:55 +02:00
omap-des.c crypto: omap-des - handle NULL cipher request 2019-12-11 16:37:00 +08:00
omap-sham.c crypto: omap-sham - fix unaligned sg list handling 2019-12-11 16:37:00 +08:00
padlock-aes.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
padlock-sha.c crypto: padlock-sha - Use init_tfm/exit_tfm interface 2019-12-11 16:48:39 +08:00
picoxcell_crypto_regs.h treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 156 2019-05-30 11:26:35 -07:00
picoxcell_crypto.c crypto: remove propagation of CRYPTO_TFM_RES_* flags 2020-01-09 11:30:53 +08:00
qcom-rng.c crypto: qcom-rng - use devm_platform_ioremap_resource() to simplify code 2019-08-09 15:12:03 +10:00
s5p-sss.c crypto: s5p - switch to skcipher API 2019-11-17 09:02:46 +08:00
sahara.c crypto: remove propagation of CRYPTO_TFM_RES_* flags 2020-01-09 11:30:53 +08:00
talitos.c crypto: remove CRYPTO_TFM_RES_BAD_KEY_LEN 2020-01-09 11:30:53 +08:00
talitos.h crypto: talitos - drop icv_ool 2019-07-03 22:13:11 +08:00