x86/vdso: Use proper modifier for len's format specifier in extract()
Commit
8382c668ce4f ("x86/vdso: Add support for exception fixup in vDSO functions")
prints length "len" which is size_t.
Compilers now complain when building on a 32-bit host:
HOSTCC arch/x86/entry/vdso/vdso2c
...
In file included from arch/x86/entry/vdso/vdso2c.c:162:
arch/x86/entry/vdso/vdso2c.h: In function 'extract64':
arch/x86/entry/vdso/vdso2c.h:38:52: warning: format '%lu' expects argument of \
type 'long unsigned int', but argument 4 has type 'size_t' {aka 'unsigned int'}
So use proper modifier (%zu) for size_t.
[ bp: Massage commit message. ]
Fixes:
8382c668ce4f ("x86/vdso: Add support for exception fixup in vDSO functions")
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Signed-off-by: Borislav Petkov <bp@suse.de>
Acked-by: Jarkko Sakkinen <jarkko@kernel.org>
Link: https://lkml.kernel.org/r/20210303064357.17056-1-jslaby@suse.cz