lkml.org 
[lkml]   [2021]   [Mar]   [4]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
Date
From
Subject[tip: x86/vdso] x86/vdso: Use proper modifier for len's format specifier in extract()
The following commit has been merged into the x86/vdso branch of tip:

Commit-ID: 6bdbe1760651484b0fe6f6d0cc3a2fe8741e6f87
Gitweb: https://git.kernel.org/tip/6bdbe1760651484b0fe6f6d0cc3a2fe8741e6f87
Author: Jiri Slaby <jslaby@suse.cz>
AuthorDate: Wed, 03 Mar 2021 07:43:57 +01:00
Committer: Borislav Petkov <bp@suse.de>
CommitterDate: Thu, 04 Mar 2021 11:47:01 +01:00

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 on 32-bit:

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
---
arch/x86/entry/vdso/vdso2c.h | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/entry/vdso/vdso2c.h b/arch/x86/entry/vdso/vdso2c.h
index 1c7cfac..5264daa 100644
--- a/arch/x86/entry/vdso/vdso2c.h
+++ b/arch/x86/entry/vdso/vdso2c.h
@@ -35,7 +35,7 @@ static void BITSFUNC(extract)(const unsigned char *data, size_t data_len,
if (offset + len > data_len)
fail("section to extract overruns input data");

- fprintf(outfile, "static const unsigned char %s[%lu] = {", name, len);
+ fprintf(outfile, "static const unsigned char %s[%zu] = {", name, len);
BITSFUNC(copy)(outfile, data + offset, len);
fprintf(outfile, "\n};\n\n");
}
\
 
 \ /
  Last update: 2021-03-04 11:59    [W:0.084 / U:0.140 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site