stable-rc 4.19: lib/vsprintf.c:1983:11: error: implicit declaration of function ‘error_string’ [-Werror=implicit-function-declaration] 1983 | return error_string(buf, end, "(einval)", spec);

stable-rc 4.19: lib/vsprintf.c:1983:11: error: implicit declaration of function ‘error_string’ [-Werror=implicit-function-declaration] 1983 | return error_string(buf, end, "(einval)", spec);

[Naresh Kamboju]

stable-rc 4.19 build broken on arm64, arm, x86_64 and i386.

 # make -sk KBUILD_BUILD_USER=TuxBuild -C/linux -j16 ARCH=x86
HOSTCC=gcc CC="sccache gcc" O=build
75 #
76 kernel/locking/rwsem.o: warning: objtool: up_read()+0x11: call
without frame pointer save/setup
77 kernel/locking/rwsem.o: warning: objtool: up_write()+0x17: call
without frame pointer save/setup
78 kernel/locking/rwsem.o: warning: objtool: downgrade_write()+0x25:
call without frame pointer save/setup
79 ../drivers/crypto/ccp/sp-platform.c:37:34: warning: array
‘sp_of_match’ assumed to have one element
80  37 | static const struct of_device_id sp_of_match[];
81  | ^~~~~~~~~~~
82 ../lib/vsprintf.c: In function ‘pointer’:
83 ../lib/vsprintf.c:1983:11: error: implicit declaration of function
‘error_string’ [-Werror=implicit-function-declaration]
84  1983 | return error_string(buf, end, "(einval)", spec);
85  | ^~~~~~~~~~~~
86 ../lib/vsprintf.c:1983:11: warning: returning ‘int’ from a function
with return type ‘char *’ makes pointer from integer without a cast
[-Wint-conversion]
87  1983 | return error_string(buf, end, "(einval)", spec);
88  | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
89 cc1: some warnings being treated as errors

ref:
https://gitlab.com/Linaro/lkft/kernel-runs/-/jobs/557410092
https://gitlab.com/Linaro/lkft/kernel-runs/-/jobs/557410099

-- 
Linaro LKFT
https://lkft.linaro.org

Re: stable-rc 4.19: lib/vsprintf.c:1983:11: error: implicit declaration of function ‘error_string’ [-Werror=implicit-function-declaration] 1983 | return error_string(buf, end, "(einval)", spec);

[Greg Kroah-Hartman]

On Mon, May 18, 2020 at 10:49:08PM +0530, Naresh Kamboju wrote:
> stable-rc 4.19 build broken on arm64, arm, x86_64 and i386.
> 
>  # make -sk KBUILD_BUILD_USER=TuxBuild -C/linux -j16 ARCH=x86
> HOSTCC=gcc CC="sccache gcc" O=build
> 75 #
> 76 kernel/locking/rwsem.o: warning: objtool: up_read()+0x11: call
> without frame pointer save/setup
> 77 kernel/locking/rwsem.o: warning: objtool: up_write()+0x17: call
> without frame pointer save/setup
> 78 kernel/locking/rwsem.o: warning: objtool: downgrade_write()+0x25:
> call without frame pointer save/setup
> 79 ../drivers/crypto/ccp/sp-platform.c:37:34: warning: array
> ‘sp_of_match’ assumed to have one element
> 80  37 | static const struct of_device_id sp_of_match[];
> 81  | ^~~~~~~~~~~
> 82 ../lib/vsprintf.c: In function ‘pointer’:
> 83 ../lib/vsprintf.c:1983:11: error: implicit declaration of function
> ‘error_string’ [-Werror=implicit-function-declaration]
> 84  1983 | return error_string(buf, end, "(einval)", spec);
> 85  | ^~~~~~~~~~~~
> 86 ../lib/vsprintf.c:1983:11: warning: returning ‘int’ from a function
> with return type ‘char *’ makes pointer from integer without a cast
> [-Wint-conversion]
> 87  1983 | return error_string(buf, end, "(einval)", spec);
> 88  | ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 89 cc1: some warnings being treated as errors
> 
> ref:
> https://gitlab.com/Linaro/lkft/kernel-runs/-/jobs/557410092
> https://gitlab.com/Linaro/lkft/kernel-runs/-/jobs/557410099

Should all now be fixed, sorry for the churn.

greg k-h