linux/drivers/crypto
Kees Cook 47307c31d9 crypto: octeontx2 - Avoid stack variable overflow
Building with -Warray-bounds showed a stack variable array index
overflow. Increase the expected size of the array to avoid the warning:

In file included from ./include/linux/printk.h:555,
                 from ./include/asm-generic/bug.h:22,
                 from ./arch/x86/include/asm/bug.h:84,
                 from ./include/linux/bug.h:5,
                 from ./include/linux/mmdebug.h:5,
                 from ./include/linux/gfp.h:5,
                 from ./include/linux/firmware.h:7,
                 from drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c:5:
drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c: In function 'otx2_cpt_print_uc_dbg_info':
./include/linux/dynamic_debug.h:162:33: warning: array subscript 4 is above array bounds of 'u32[4]' {aka 'unsigned int[4]'} [-Warray-bounds]
  162 |         _dynamic_func_call(fmt, __dynamic_pr_debug,             \
      |                                 ^
./include/linux/dynamic_debug.h:134:17: note: in definition of macro '__dynamic_func_call'
  134 |                 func(&id, ##__VA_ARGS__);               \
      |                 ^~~~
./include/linux/dynamic_debug.h:162:9: note: in expansion of macro '_dynamic_func_call'
  162 |         _dynamic_func_call(fmt, __dynamic_pr_debug,             \
      |         ^~~~~~~~~~~~~~~~~~
./include/linux/printk.h:570:9: note: in expansion of macro 'dynamic_pr_debug'
  570 |         dynamic_pr_debug(fmt, ##__VA_ARGS__)
      |         ^~~~~~~~~~~~~~~~
drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c:1807:41: note: in expansion of macro 'pr_debug'
 1807 |                                         pr_debug("Mask: %8.8x %8.8x %8.8x %8.8x %8.8x",
      |                                         ^~~~~~~~
drivers/crypto/marvell/octeontx2/otx2_cptpf_ucode.c:1765:13: note: while referencing 'mask'
 1765 |         u32 mask[4];
      |             ^~~~

This is justified because the mask size (eng_grps->engs_num) can be at
most 144 (OTX2_CPT_MAX_ENGINES bits), which is larger than available
storage. 4 * 32 == 128, so this must be 5: 5 * 32bit = 160.

Additionally clear the mask before conversion so trailing bits are zero.

Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Boris Brezillon <bbrezillon@kernel.org>
Cc: Arnaud Ebalard <arno@natisbad.org>
Cc: Srujana Challa <schalla@marvell.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Suheil Chandran <schandran@marvell.com>
Cc: Shijith Thotton <sthotton@marvell.com>
Cc: Lukasz Bartosik <lbartosik@marvell.com>
Cc: linux-crypto@vger.kernel.org
Fixes: d9d7749773 ("crypto: octeontx2 - add apis for custom engine groups")
Acked-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
2022-01-31 11:22:53 +11:00
..
allwinner crypto: sun8i-ce - Add support for the D1 variant 2021-11-26 16:25:16 +11:00
amcc crypto: amcc - fix incorrect kernel-doc comment syntax in files 2021-03-26 20:15:58 +11:00
amlogic crypto: amlogic - Fix the parameter of dma_unmap_sg() 2021-03-26 20:02:34 +11:00
axis crypto: sha - split sha.h into sha1.h and sha2.h 2020-11-20 14:45:33 +11:00
bcm crypto: bcm - Fix a whole host of kernel-doc misdemeanours 2021-03-26 20:02:35 +11:00
caam crypto: caam - save caam memory to support crypto engine retry mechanism. 2021-12-03 15:56:17 +11:00
cavium crypto: cavium - Use kcalloc() instead of kzalloc() 2021-12-17 16:59:47 +11:00
ccp crypto: ccp - remove unneeded semicolon 2021-12-31 18:10:55 +11:00
ccree crypto: ccree - remove redundant 'flush_workqueue()' calls 2021-11-20 15:06:38 +11:00
chelsio treewide: Replace open-coded flex arrays in unions 2021-10-18 12:28:53 -07:00
gemini crypto: sl3516 - Typo s/Stormlink/Storlink/ 2021-06-28 11:28:08 +08:00
hisilicon crypto: hisilicon - cleanup warning in qm_get_qos_value() 2021-12-31 18:10:56 +11:00
inside-secure crypto: inside-secure - Minor typo fix in the file safexcel.c 2021-03-26 20:02:35 +11:00
keembay crypto: keembay-ocs-ecc - Fix error return code in kmb_ocs_ecc_probe() 2021-11-20 15:02:08 +11:00
marvell crypto: octeontx2 - Avoid stack variable overflow 2022-01-31 11:22:53 +11:00
nx powerpc updates for 5.14 2021-07-02 12:54:34 -07:00
qat crypto: qat - fix definition of ring reset results 2021-12-31 18:10:56 +11:00
qce crypto: qce - fix uaf on qce_skcipher_register_one 2021-11-20 15:02:08 +11:00
rockchip crypto: rockchip - delete unneeded variable initialization 2021-04-09 17:45:13 +10:00
stm32 crypto: stm32/crc32 - Fix kernel BUG triggered in probe() 2021-12-31 18:10:55 +11:00
ux500 crypto: ux500 - Use platform_get_irq() to get the interrupt 2021-12-24 14:18:28 +11:00
virtio virtio: wrap config->reset calls 2022-01-14 18:50:52 -05:00
vmx crypto: vmx - fix incorrect kernel-doc comment syntax in files 2021-03-26 20:15:58 +11:00
xilinx crypto: algapi - Remove skbuff.h inclusion 2020-08-20 14:04:28 +10:00
atmel-aes-regs.h
atmel-aes.c crypto: atmel-aes - Reestablish the correct tfm context at dequeue 2021-11-20 15:02:07 +11:00
atmel-authenc.h crypto: sha - split sha.h into sha1.h and sha2.h 2020-11-20 14:45:33 +11:00
atmel-ecc.c crypto: atmel-ecc - Struct headers need to start with keyword 'struct' 2021-03-26 20:02:36 +11:00
atmel-i2c.c crypto: atmel - use the correct print format 2021-04-16 21:16:33 +10:00
atmel-i2c.h
atmel-sha204a.c
atmel-sha-regs.h
atmel-sha.c crypto: atmel - use the correct print format 2021-04-16 21:16:33 +10:00
atmel-tdes-regs.h
atmel-tdes.c crypto: atmel - Set OFB's blocksize to 1 2021-07-30 10:58:34 +08:00
exynos-rng.c
geode-aes.c crypto: geode - use DEFINE_SPINLOCK() for spinlock 2021-04-16 21:16:31 +10:00
geode-aes.h
hifn_795x.c crypto: drivers - use semicolons rather than commas to separate statements 2020-10-02 18:02:15 +10:00
img-hash.c crypto: img-hash - remove need for error return variable ret 2021-09-17 11:06:14 +08:00
ixp4xx_crypto.c ARM: SoC changes for 5.14 2021-07-10 09:22:44 -07:00
Kconfig s390/crypto: add SIMD implementation for ChaCha20 2021-12-06 14:42:24 +01:00
Makefile crypto: sl3516 - Add sl3516 crypto engine 2021-06-11 15:03:29 +08:00
mxs-dcp.c crypto: mxs-dcp - Use sg_mapping_iter to copy data 2021-07-16 15:49:34 +08:00
n2_asm.S
n2_core.c crypto: sha - split sha.h into sha1.h and sha2.h 2020-11-20 14:45:33 +11:00
n2_core.h
omap-aes-gcm.c crypto: omap-aes - avoid spamming console with self tests 2020-06-04 22:03:39 +10:00
omap-aes.c crypto: omap-aes - Fix broken pm_runtime_and_get() usage 2021-12-24 14:18:28 +11:00
omap-aes.h crypto: omap-aes - permit asynchronous skcipher as fallback 2020-07-16 21:49:02 +10:00
omap-crypto.c crypto: omap - Avoid redundant copy when using truncated sg list 2021-08-21 15:44:53 +08:00
omap-crypto.h
omap-des.c crypto: omap - increase priority of DES/3DES 2021-12-24 14:18:22 +11:00
omap-sham.c crypto: omap - Fix inconsistent locking of device lists 2021-08-21 15:44:53 +08:00
padlock-aes.c crypto: algapi - Remove skbuff.h inclusion 2020-08-20 14:04:28 +10:00
padlock-sha.c crypto: sha - split sha.h into sha1.h and sha2.h 2020-11-20 14:45:33 +11:00
qcom-rng.c crypto: algapi - Remove skbuff.h inclusion 2020-08-20 14:04:28 +10:00
s5p-sss.c crypto: s5p-sss - Add error handling in s5p_aes_probe() 2021-10-29 21:04:03 +08:00
sa2ul.c crypto: sa2ul - Use bitfield helpers 2021-12-03 15:56:17 +11:00
sa2ul.h crypto: sa2ul - Add support for AM64 2021-04-22 17:31:30 +10:00
sahara.c crypto: sahara - Remove unused .id_table support 2021-01-03 08:41:34 +11:00
talitos.c crypto: talitos - Fix ctr(aes) on SEC1 2021-01-29 15:57:59 +11:00
talitos.h crypto: talitos - Work around SEC6 ERRATA (AES-CTR mode data size error) 2021-01-29 15:57:58 +11:00