diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/kasan/report.c | 75 |
1 files changed, 34 insertions, 41 deletions
diff --git a/mm/kasan/report.c b/mm/kasan/report.c index 93543157d3e1..0b6c8a14f0ea 100644 --- a/mm/kasan/report.c +++ b/mm/kasan/report.c @@ -98,13 +98,40 @@ static void print_error_description(struct kasan_access_info *info) info->access_addr, current->comm, task_pid_nr(current)); } +#if IS_ENABLED(CONFIG_KASAN_KUNIT_TEST) +static void update_kunit_status(bool sync) +{ + struct kunit *test; + struct kunit_resource *resource; + struct kunit_kasan_status *status; + + test = current->kunit_test; + if (!test) + return; + + resource = kunit_find_named_resource(test, "kasan_status"); + if (!resource) { + kunit_set_failure(test); + return; + } + + status = (struct kunit_kasan_status *)resource->data; + WRITE_ONCE(status->report_found, true); + WRITE_ONCE(status->sync_fault, sync); + + kunit_put_resource(resource); +} +#else +static void update_kunit_status(bool sync) { } +#endif + static DEFINE_SPINLOCK(report_lock); -static void start_report(unsigned long *flags) +static void start_report(unsigned long *flags, bool sync) { - /* - * Make sure we don't end up in loop. - */ + /* Update status of the currently running KASAN test. */ + update_kunit_status(sync); + /* Make sure we don't end up in loop. */ kasan_disable_current(); spin_lock_irqsave(&report_lock, *flags); pr_err("==================================================================\n"); @@ -356,33 +383,6 @@ static bool report_enabled(void) return !test_and_set_bit(KASAN_BIT_REPORTED, &kasan_flags); } -#if IS_ENABLED(CONFIG_KASAN_KUNIT_TEST) -static void update_kunit_status(bool sync) -{ - struct kunit *test; - struct kunit_resource *resource; - struct kunit_kasan_status *status; - - test = current->kunit_test; - if (!test) - return; - - resource = kunit_find_named_resource(test, "kasan_status"); - if (!resource) { - kunit_set_failure(test); - return; - } - - status = (struct kunit_kasan_status *)resource->data; - WRITE_ONCE(status->report_found, true); - WRITE_ONCE(status->sync_fault, sync); - - kunit_put_resource(resource); -} -#else -static void update_kunit_status(bool sync) { } -#endif - void kasan_report_invalid_free(void *object, unsigned long ip) { unsigned long flags; @@ -390,9 +390,7 @@ void kasan_report_invalid_free(void *object, unsigned long ip) object = kasan_reset_tag(object); - update_kunit_status(true); - - start_report(&flags); + start_report(&flags, true); pr_err("BUG: KASAN: double-free or invalid-free in %pS\n", (void *)ip); kasan_print_tags(tag, object); pr_err("\n"); @@ -406,9 +404,7 @@ void kasan_report_async(void) { unsigned long flags; - update_kunit_status(false); - - start_report(&flags); + start_report(&flags, false); pr_err("BUG: KASAN: invalid-access\n"); pr_err("Asynchronous mode enabled: no access details available\n"); pr_err("\n"); @@ -425,9 +421,8 @@ static void __kasan_report(unsigned long addr, size_t size, bool is_write, void *untagged_addr; unsigned long flags; - update_kunit_status(true); - disable_trace_on_warning(); + start_report(&flags, true); tagged_addr = (void *)addr; untagged_addr = kasan_reset_tag(tagged_addr); @@ -442,8 +437,6 @@ static void __kasan_report(unsigned long addr, size_t size, bool is_write, info.is_write = is_write; info.ip = ip; - start_report(&flags); - print_error_description(&info); if (addr_has_metadata(untagged_addr)) kasan_print_tags(get_tag(tagged_addr), info.first_bad_addr); |