| Message ID | 20231016203548.21993-1-marpagan@redhat.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | kunit: run test suites only after module initialization completes | expand |
Hi Marco,
kernel test robot noticed the following build errors:
[auto build test ERROR on linus/master]
[also build test ERROR on v6.6-rc6 next-20231018]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]
url: https://github.com/intel-lab-lkp/linux/commits/Marco-Pagani/kunit-run-test-suites-only-after-module-initialization-completes/20231017-161611
base: linus/master
patch link: https://lore.kernel.org/r/20231016203548.21993-1-marpagan%40redhat.com
patch subject: [PATCH] kunit: run test suites only after module initialization completes
config: arm-randconfig-004-20231019 (https://download.01.org/0day-ci/archive/20231019/202310190514.uKp3bS5Q-lkp@intel.com/config)
compiler: arm-linux-gnueabi-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231019/202310190514.uKp3bS5Q-lkp@intel.com/reproduce)
If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202310190514.uKp3bS5Q-lkp@intel.com/
All errors (new ones prefixed by >>):
In file included from arch/arm/include/asm/page.h:188,
from arch/arm/include/asm/thread_info.h:14,
from include/linux/thread_info.h:60,
from include/asm-generic/preempt.h:5,
from ./arch/arm/include/generated/asm/preempt.h:1,
from include/linux/preempt.h:79,
from include/linux/spinlock.h:56,
from include/linux/kref.h:16,
from include/kunit/test.h:22,
from include/kunit/resource.h:12,
from lib/kunit/test.c:9:
lib/kunit/test.c: In function 'kunit_module_exit':
>> arch/arm/include/asm/memory.h:391:116: error: 'high_memory' undeclared (first use in this function)
391 | #define virt_addr_valid(kaddr) (((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory) \
| ^~~~~~~~~~~
lib/kunit/test.c:772:34: note: in expansion of macro 'virt_addr_valid'
772 | if (!suite_set.start || !virt_addr_valid(suite_set.start))
| ^~~~~~~~~~~~~~~
arch/arm/include/asm/memory.h:391:116: note: each undeclared identifier is reported only once for each function it appears in
391 | #define virt_addr_valid(kaddr) (((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory) \
| ^~~~~~~~~~~
lib/kunit/test.c:772:34: note: in expansion of macro 'virt_addr_valid'
772 | if (!suite_set.start || !virt_addr_valid(suite_set.start))
| ^~~~~~~~~~~~~~~
vim +/high_memory +391 arch/arm/include/asm/memory.h
05944d74bc28ff include/asm-arm/memory.h Russell King 2006-11-30 389
e26a9e00afc482 arch/arm/include/asm/memory.h Russell King 2014-03-25 390 #define virt_to_page(kaddr) pfn_to_page(virt_to_pfn(kaddr))
efea3403d4b7c6 arch/arm/include/asm/memory.h Laura Abbott 2013-12-21 @391 #define virt_addr_valid(kaddr) (((unsigned long)(kaddr) >= PAGE_OFFSET && (unsigned long)(kaddr) < (unsigned long)high_memory) \
e26a9e00afc482 arch/arm/include/asm/memory.h Russell King 2014-03-25 392 && pfn_valid(virt_to_pfn(kaddr)))
^1da177e4c3f41 include/asm-arm/memory.h Linus Torvalds 2005-04-16 393
diff --git a/lib/kunit/test.c b/lib/kunit/test.c index 421f13981412..1a49569186fc 100644 --- a/lib/kunit/test.c +++ b/lib/kunit/test.c @@ -769,12 +769,14 @@ static void kunit_module_exit(struct module *mod) }; const char *action = kunit_action(); + if (!suite_set.start || !virt_addr_valid(suite_set.start)) + return; + if (!action) __kunit_test_suites_exit(mod->kunit_suites, mod->num_kunit_suites); - if (suite_set.start) - kunit_free_suite_set(suite_set); + kunit_free_suite_set(suite_set); } static int kunit_module_notify(struct notifier_block *nb, unsigned long val, @@ -784,12 +786,12 @@ static int kunit_module_notify(struct notifier_block *nb, unsigned long val, switch (val) { case MODULE_STATE_LIVE: + kunit_module_init(mod); break; case MODULE_STATE_GOING: kunit_module_exit(mod); break; case MODULE_STATE_COMING: - kunit_module_init(mod); break; case MODULE_STATE_UNFORMED: break;
Commit 2810c1e99867 ("kunit: Fix wild-memory-access bug in kunit_free_suite_set()") is causing all test suites to run (when built as modules) while still in MODULE_STATE_COMING. In that state, test modules are not fully initialized and lack sysfs kobjects. This behavior can cause a crash if the test module tries to register fake devices. This patch restores the normal execution flow, waiting for the module initialization to complete before running the test suites. The issue reported in the commit mentioned above is addressed using virt_addr_valid() to detect if the module loading has failed and mod->kunit_suites has not been allocated using kmalloc_array(). Fixes: 2810c1e99867 ("kunit: Fix wild-memory-access bug in kunit_free_suite_set()") Signed-off-by: Marco Pagani <marpagan@redhat.com> --- lib/kunit/test.c | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-)