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SubjectRe: [PATCH v9 2/4] seccomp: switch system call argument type to void *
On Tue, Dec 04, 2018 at 10:07:38AM +0800, kbuild test robot wrote:
> Hi Tycho,
>
> I love your patch! Yet something to improve:
>
> [auto build test ERROR on linus/master]
> [also build test ERROR on v4.20-rc5 next-20181203]
> [if your patch is applied to the wrong git tree, please drop us a note to help improve the system]
>
> url: https://github.com/0day-ci/linux/commits/Tycho-Andersen/seccomp-hoist-struct-seccomp_data-recalculation-higher/20181204-013450
> config: i386-randconfig-x005-201848 (attached as .config)
> compiler: gcc-7 (Debian 7.3.0-1) 7.3.0
> reproduce:
> # save the attached .config to linux build tree
> make ARCH=i386
>
> All errors (new ones prefixed by >>):
>
> In file included from kernel/seccomp.c:28:0:
> >> include/linux/syscalls.h:239:18: error: conflicting types for 'sys_seccomp'
> asmlinkage long sys##name(__MAP(x,__SC_DECL,__VA_ARGS__)) \
> ^
> include/linux/syscalls.h:225:2: note: in expansion of macro '__SYSCALL_DEFINEx'
> __SYSCALL_DEFINEx(x, sname, __VA_ARGS__)
> ^~~~~~~~~~~~~~~~~
> include/linux/syscalls.h:216:36: note: in expansion of macro 'SYSCALL_DEFINEx'
> #define SYSCALL_DEFINE3(name, ...) SYSCALL_DEFINEx(3, _##name, __VA_ARGS__)
> ^~~~~~~~~~~~~~~
> kernel/seccomp.c:946:1: note: in expansion of macro 'SYSCALL_DEFINE3'
> SYSCALL_DEFINE3(seccomp, unsigned int, op, unsigned int, flags,
> ^~~~~~~~~~~~~~~
> In file included from kernel/seccomp.c:28:0:
> include/linux/syscalls.h:881:17: note: previous declaration of 'sys_seccomp' was here
> asmlinkage long sys_seccomp(unsigned int op, unsigned int flags,
> ^~~~~~~~~~~

Huh, I have no idea why I don't see this, but even with the attached
config it still doesn't cause a problem for me. Anyway, I'll fix it up
and do some more investigating...

Tycho

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