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| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2017-10-04 02:15:16 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2017-10-04 03:54:24 +0300 |
| commit | a872eb2131e91ce7c89a8888974a5e22a272b12f (patch) | |
| tree | 268453c4f17ca01b42c9b841559a83572a019f19 | |
| parent | 31d1e130f4a0f8f629a460167569577cac9b17c1 (diff) | |
| download | linux-a872eb2131e91ce7c89a8888974a5e22a272b12f.tar.xz | |
mm: fix RODATA_TEST failure "rodata_test: test data was not read only"
On powerpc, RODATA_TEST fails with message the following messages:
Freeing unused kernel memory: 528K
rodata_test: test data was not read only
This is because GCC allocates it to .data section:
c0695034 g O .data 00000004 rodata_test_data
Since commit 056b9d8a7692 ("mm: remove rodata_test_data export, add
pr_fmt"), rodata_test_data is used only inside rodata_test.c By
declaring it static, it gets properly allocated into .rodata section
instead of .data:
c04df710 l O .rodata 00000004 rodata_test_data
Fixes: 056b9d8a7692 ("mm: remove rodata_test_data export, add pr_fmt")
Link: http://lkml.kernel.org/r/20170921093729.1080368AC1@po15668-vm-win7.idsi0.si.c-s.fr
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Cc: Kees Cook <keescook@chromium.org>
Cc: Jinbum Park <jinb.park7@gmail.com>
Cc: Segher Boessenkool <segher@kernel.crashing.org>
Cc: David Laight <David.Laight@ACULAB.COM>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| -rw-r--r-- | mm/rodata_test.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/rodata_test.c b/mm/rodata_test.c index 6bb4deb12e78..d908c8769b48 100644 --- a/mm/rodata_test.c +++ b/mm/rodata_test.c @@ -14,7 +14,7 @@ #include <linux/uaccess.h> #include <asm/sections.h> -const int rodata_test_data = 0xC3; +static const int rodata_test_data = 0xC3; void rodata_test(void) { |