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authorKees Cook <keescook@chromium.org>2017-05-03 14:53:32 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-05-03 15:52:09 -0700
commit056b9d8a76924df02011f3941c4f53ace8d6c32a (patch)
treeb5508463daeaab5186ed3020da3bed867bcdfea4 /mm/rodata_test.c
parent9ab2594febb468964a4c00f8023ec22073ca8716 (diff)
downloadlinux-sh-056b9d8a76924df02011f3941c4f53ace8d6c32a.tar.gz
mm: remove rodata_test_data export, add pr_fmt
Since commit 3ad38ceb2769 ("x86/mm: Remove CONFIG_DEBUG_NX_TEST"), nothing is using the exported rodata_test_data variable, so drop the export. This additionally updates the pr_fmt to avoid redundant strings and adjusts some whitespace. Link: http://lkml.kernel.org/r/20170307005313.GA85809@beast Signed-off-by: Kees Cook <keescook@chromium.org> Cc: Jinbum Park <jinb.park7@gmail.com> Cc: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/rodata_test.c')
-rw-r--r--mm/rodata_test.c17
1 files changed, 9 insertions, 8 deletions
diff --git a/mm/rodata_test.c b/mm/rodata_test.c
index 0fd21670b513..6bb4deb12e78 100644
--- a/mm/rodata_test.c
+++ b/mm/rodata_test.c
@@ -9,11 +9,12 @@
* as published by the Free Software Foundation; version 2
* of the License.
*/
+#define pr_fmt(fmt) "rodata_test: " fmt
+
#include <linux/uaccess.h>
#include <asm/sections.h>
const int rodata_test_data = 0xC3;
-EXPORT_SYMBOL_GPL(rodata_test_data);
void rodata_test(void)
{
@@ -23,20 +24,20 @@ void rodata_test(void)
/* test 1: read the value */
/* If this test fails, some previous testrun has clobbered the state */
if (!rodata_test_data) {
- pr_err("rodata_test: test 1 fails (start data)\n");
+ pr_err("test 1 fails (start data)\n");
return;
}
/* test 2: write to the variable; this should fault */
if (!probe_kernel_write((void *)&rodata_test_data,
- (void *)&zero, sizeof(zero))) {
- pr_err("rodata_test: test data was not read only\n");
+ (void *)&zero, sizeof(zero))) {
+ pr_err("test data was not read only\n");
return;
}
/* test 3: check the value hasn't changed */
if (rodata_test_data == zero) {
- pr_err("rodata_test: test data was changed\n");
+ pr_err("test data was changed\n");
return;
}
@@ -44,13 +45,13 @@ void rodata_test(void)
start = (unsigned long)__start_rodata;
end = (unsigned long)__end_rodata;
if (start & (PAGE_SIZE - 1)) {
- pr_err("rodata_test: start of .rodata is not page size aligned\n");
+ pr_err("start of .rodata is not page size aligned\n");
return;
}
if (end & (PAGE_SIZE - 1)) {
- pr_err("rodata_test: end of .rodata is not page size aligned\n");
+ pr_err("end of .rodata is not page size aligned\n");
return;
}
- pr_info("rodata_test: all tests were successful\n");
+ pr_info("all tests were successful\n");
}