mm, kasan: stackdepot implementation. Enable stackdepot for SLAB

[cascardo/linux.git] / mm / kasan / report.c

diff --git a/mm/kasan/report.c b/mm/kasan/report.c
index 3e3385c..60869a5 100644 (file)
--- a/mm/kasan/report.c
+++ b/mm/kasan/report.c
@@ -18,6 +18,7 @@
 #include <linux/printk.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
+#include <linux/stackdepot.h>
 #include <linux/stacktrace.h>
 #include <linux/string.h>
 #include <linux/types.h>
@@ -118,8 +119,15 @@ static inline bool init_task_stack_addr(const void *addr)
 #ifdef CONFIG_SLAB
 static void print_track(struct kasan_track *track)
 {
-       pr_err("PID = %u, CPU = %u, timestamp = %lu\n", track->pid,
-              track->cpu, (unsigned long)track->when);
+       pr_err("PID = %u\n", track->pid);
+       if (track->stack) {
+               struct stack_trace trace;
+
+               depot_fetch_stack(track->stack, &trace);
+               print_stack_trace(&trace, 0);
+       } else {
+               pr_err("(stack is not available)\n");
+       }
 }
 
 static void object_err(struct kmem_cache *cache, struct page *page,