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um: include linux/stddef.h for __always_inline 

When compiling against musl, their shipped <stddef.h> doesn't have
__always_inline. So instead explicitly include the kernel uapi header,
<linux/stddef.h>, which does.

This prevents the following build error:

In file included from arch/x86/um/shared/sysdep/stub.h:11,
                 from arch/um/kernel/skas/clone.c:14:
arch/x86/um/shared/sysdep/stub_64.h:111:23: error: expected ‘;’ before ‘void’
  111 | static __always_inline void *get_stub_page(void)
      |                       ^~~~~
      |                       ;
make[4]: *** [scripts/Makefile.build:249: arch/um/kernel/skas/clone.o] Error 1

Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
This commit is contained in:
Jason A. Donenfeld 2022-07-13 12:54:06 +02:00 committed by Richard Weinberger
parent 5b301409e8
commit 7ac73fbb54
1 changed files with 1 additions and 0 deletions
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arch/x86/um/shared/sysdep/stub_64.h
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@ -8,6 +8,7 @@
#include <sysdep/ptrace_user.h>
#include <generated/asm-offsets.h>
#include <linux/stddef.h>
#define STUB_MMAP_NR __NR_mmap
#define MMAP_OFFSET(o) (o)