5:19 a.m.
Hi Fabio,
On Fri, May 21, 2021 at 04:26:57PM +0200, Fabio Aiuto wrote:
Hi robot,
On Thu, May 20, 2021 at 05:03:14PM +0800, kernel test robot wrote:
> tree: https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
staging-next
> head: b9f38e913a926b455e5048a95f53a993b515509f
> commit: 1b11e893eda0907fc9b28696271e2d9c4337e42d [201/268] staging: rtl8723bs:
replace private arc4 encryption with in-kernel one
> config: powerpc64-randconfig-r011-20210520 (attached as .config)
> compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project
bf9ef3efaa99c02e7bfc4c57207301b8de39a278)
> reproduce (this is a W=1 build):
> wget
https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O
~/bin/make.cross
> chmod +x ~/bin/make.cross
> # install powerpc64 cross compiling tool for clang build
> # apt-get install binutils-powerpc64-linux-gnu
> #
https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git/commit...
> git remote add staging
https://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging.git
> git fetch --no-tags staging staging-next
> git checkout 1b11e893eda0907fc9b28696271e2d9c4337e42d
> # save the attached .config to linux build tree
> COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64
can't compile this, I get the following error:
make CONFIG_OF_ALL_DTBS=y CONFIG_DTC=y HOSTCC=/home/fabio/0day/clang/bin/clang
CC=/home/fabio/0day/clang/bin/clang LD=/home/fabio/0day/clang/bin/ld.lld
HOSTLD=/home/fabio/0day/clang/bin/ld.lld AR=/home/fabio/0day/clang/bin/llvm-ar
NM=/home/fabio/0day/clang/bin/llvm-nm STRIP=/home/fabio/0day/clang/bin/llvm-strip
OBJDUMP=/home/fabio/0day/clang/bin/llvm-objdump
OBJSIZE=/home/fabio/0day/clang/bin/llvm-size
READELF=/home/fabio/0day/clang/bin/llvm-readelf HOSTCXX=/home/fabio/0day/clang/bin/clang++
HOSTAR=/home/fabio/0day/clang/bin/llvm-ar CROSS_COMPILE=powerpc-linux-gnu- --jobs=8
LLVM_IAS=1 ARCH=powerpc drivers/staging/rtl8723bs/
CC scripts/mod/empty.o
clang: error: unsupported argument '-me500' to option 'Wa,'
make[1]: *** [scripts/Makefile.build:272: scripts/mod/empty.o] Error 1
make[1]: *** Attesa per i processi non terminati....
make: *** [Makefile:1226: prepare0] Error 2
moreover I had to add LLVM_IAS=1, and ARCH=powerpc64 is not a valid architecture (used
powerpc instead).
Could you help me?
This is not a clang specific issue, I would not bother with trying to
use the bot's reproducer steps.
I can reproduce it with GCC 11.1.0 using the following commands:
$ make -skj"$(nproc)" ARCH=i386 defconfig
$ scripts/config -e MMC -e STAGING -m RTL8723BS
$ make -skj"$(nproc)" ARCH=i386 olddefconfig drivers/staging/rtl8723bs/
drivers/staging/rtl8723bs/core/rtw_security.c: In function ‘rtw_wep_encrypt’:
drivers/staging/rtl8723bs/core/rtw_security.c:91:1: warning: the frame size of 1084 bytes
is larger than 1024 bytes [-Wframe-larger-than=]
91 | }
| ^
drivers/staging/rtl8723bs/core/rtw_security.c: In function ‘rtw_wep_decrypt’:
drivers/staging/rtl8723bs/core/rtw_security.c:128:1: warning: the frame size of 1060 bytes
is larger than 1024 bytes [-Wframe-larger-than=]
128 | }
| ^
drivers/staging/rtl8723bs/core/rtw_security.c: In function ‘rtw_tkip_encrypt’:
drivers/staging/rtl8723bs/core/rtw_security.c:531:1: warning: the frame size of 1112 bytes
is larger than 1024 bytes [-Wframe-larger-than=]
531 | }
| ^
drivers/staging/rtl8723bs/core/rtw_security.c: In function ‘rtw_tkip_decrypt’:
drivers/staging/rtl8723bs/core/rtw_security.c:633:1: warning: the frame size of 1084 bytes
is larger than 1024 bytes [-Wframe-larger-than=]
633 | }
| ^
Your commit introduced this because the size of the arc4_ctx structure
is 1032 bytes so allocating it on the stack will cause it to go over the
32-bit limit of 1024 bytes. The previous arc4context was only 264 bytes.
For that large of structure, I would recommend allocating it on the heap
with kzalloc() and freeing with kfree_sensitive().
Cheers,
Nathan