diff options
Diffstat (limited to 'mm/kasan/report.c')
| -rw-r--r-- | mm/kasan/report.c | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/mm/kasan/report.c b/mm/kasan/report.c index 51ec45407a0b..445a9d56eb13 100644 --- a/mm/kasan/report.c +++ b/mm/kasan/report.c @@ -106,15 +106,20 @@ static void end_report(unsigned long *flags) kasan_enable_current(); } +static void print_stack(depot_stack_handle_t stack) +{ + unsigned long *entries; + unsigned int nr_entries; + + nr_entries = stack_depot_fetch(stack, &entries); + stack_trace_print(entries, nr_entries, 0); +} + static void print_track(struct kasan_track *track, const char *prefix) { pr_err("%s by task %u:\n", prefix, track->pid); if (track->stack) { - unsigned long *entries; - unsigned int nr_entries; - - nr_entries = stack_depot_fetch(track->stack, &entries); - stack_trace_print(entries, nr_entries, 0); + print_stack(track->stack); } else { pr_err("(stack is not available)\n"); } @@ -193,6 +198,19 @@ static void describe_object(struct kmem_cache *cache, void *object, free_track = kasan_get_free_track(cache, object, tag); print_track(free_track, "Freed"); pr_err("\n"); + +#ifdef CONFIG_KASAN_GENERIC + if (alloc_info->aux_stack[0]) { + pr_err("Last call_rcu():\n"); + print_stack(alloc_info->aux_stack[0]); + pr_err("\n"); + } + if (alloc_info->aux_stack[1]) { + pr_err("Second to last call_rcu():\n"); + print_stack(alloc_info->aux_stack[1]); + pr_err("\n"); + } +#endif } describe_object_addr(cache, object, addr); |