workqueue: Annotate alloc_workqueue_va() with __printf(1, 0)

alloc_workqueue_va() forwards its va_list to __alloc_workqueue() which
ultimately feeds vsnprintf(). __alloc_workqueue() already carries
__printf(1, 0); the new wrapper needs the same annotation so format
string checking propagates through the forwarding.

Fixes: 0de4cb473aed ("workqueue: fix devm_alloc_workqueue() va_list misuse")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202604300347.2LgXyteh-lkp@intel.com/
Signed-off-by: Tejun Heo <tj@kernel.org>

diff --git a/kernel/workqueue.c b/kernel/workqueue.c
index 24d0265191d464ea1434dff36bc9962e2be093db..3d2e3b2ec5283f267ecb8d978137580fbd4793dd 100644 (file)
--- a/kernel/workqueue.c
+++ b/kernel/workqueue.c
@@ -5906,6 +5906,7 @@ err_destroy:
        return NULL;
 }
 
+__printf(1, 0)
 static struct workqueue_struct *alloc_workqueue_va(const char *fmt,
                                                   unsigned int flags,
                                                   int max_active,