Context |
Check |
Description |
snowpatch_ozlabs/apply_patch |
warning
|
Failed to apply on branch powerpc/merge (a437a1c6e54c045f19f7d894b2a749bc5155f19a)
|
snowpatch_ozlabs/apply_patch |
warning
|
Failed to apply on branch powerpc/next (612ee81b9461475b5a5612c2e8d71559dd3c7920)
|
snowpatch_ozlabs/apply_patch |
warning
|
Failed to apply on branch linus/master (8005803a2ca0af49f36f6e9329b5ecda3df27347)
|
snowpatch_ozlabs/apply_patch |
warning
|
Failed to apply on branch powerpc/fixes (a8a30219ba78b1abb92091102b632f8e9bbdbf03)
|
snowpatch_ozlabs/apply_patch |
success
|
Successfully applied on branch linux-next (60c1769a45f4b6beddcc48843739d7d41b88dc1c)
|
snowpatch_ozlabs/checkpatch |
warning
|
total: 0 errors, 2 warnings, 0 checks, 44 lines checked
|
@@ -19,6 +19,7 @@
#include <linux/string.h>
#include <linux/uaccess.h>
#include <linux/io.h>
+#include <linux/vmalloc.h>
#include <asm/page.h>
@@ -748,6 +749,30 @@ static noinline void __init kmalloc_double_kzfree(void)
kzfree(ptr);
}
+#ifdef CONFIG_KASAN_VMALLOC
+static noinline void __init vmalloc_oob(void)
+{
+ void *area;
+
+ pr_info("vmalloc out-of-bounds\n");
+
+ /*
+ * We have to be careful not to hit the guard page.
+ * The MMU will catch that and crash us.
+ */
+ area = vmalloc(3000);
+ if (!area) {
+ pr_err("Allocation failed\n");
+ return;
+ }
+
+ ((volatile char *)area)[3100];
+ vfree(area);
+}
+#else
+static void __init vmalloc_oob(void) {}
+#endif
+
static int __init kmalloc_tests_init(void)
{
/*
@@ -793,6 +818,7 @@ static int __init kmalloc_tests_init(void)
kasan_strings();
kasan_bitops();
kmalloc_double_kzfree();
+ vmalloc_oob();
kasan_restore_multi_shot(multishot);
Test kasan vmalloc support by adding a new test to the module. Signed-off-by: Daniel Axtens <dja@axtens.net> -- v5: split out per Christophe Leroy --- lib/test_kasan.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+)