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authorDmitry Vyukov <dvyukov@google.com>2018-02-06 15:36:27 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2018-02-06 18:32:43 -0800
commitee3ce779b58c31acacdfab0ad6c86d428ba2c2e3 (patch)
treee27239a0a81672dfea5f70c893fb92f3615ca47e /mm/kasan/report.c
parent47adccce3e8a31d315f47183ab1185862b2fc5d4 (diff)
downloadlinux-ee3ce779b58c31acacdfab0ad6c86d428ba2c2e3.tar.bz2
kasan: don't use __builtin_return_address(1)
__builtin_return_address(1) is unreliable without frame pointers. With defconfig on kmalloc_pagealloc_invalid_free test I am getting: BUG: KASAN: double-free or invalid-free in (null) Pass caller PC from callers explicitly. Link: http://lkml.kernel.org/r/9b01bc2d237a4df74ff8472a3bf6b7635908de01.1514378558.git.dvyukov@google.com Signed-off-by: Dmitry Vyukov <dvyukov@google.com> Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>a Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/kasan/report.c')
-rw-r--r--mm/kasan/report.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/mm/kasan/report.c b/mm/kasan/report.c
index 55916ad21722..75206991ece0 100644
--- a/mm/kasan/report.c
+++ b/mm/kasan/report.c
@@ -326,12 +326,12 @@ static void print_shadow_for_address(const void *addr)
}
}
-void kasan_report_invalid_free(void *object, void *ip)
+void kasan_report_invalid_free(void *object, unsigned long ip)
{
unsigned long flags;
kasan_start_report(&flags);
- pr_err("BUG: KASAN: double-free or invalid-free in %pS\n", ip);
+ pr_err("BUG: KASAN: double-free or invalid-free in %pS\n", (void *)ip);
pr_err("\n");
print_address_description(object);
pr_err("\n");