The patch titled Subject: init: add lockdep annotation to kthreadd_done completer has been added to the -mm mm-hotfixes-unstable branch. Its filename is init-add-lockdep-annotation-to-kthreadd_done-completer.patch
This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches...
This patch will later appear in the mm-hotfixes-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------ From: Helge Deller deller@gmx.de Subject: init: add lockdep annotation to kthreadd_done completer Date: Fri, 11 Aug 2023 18:04:22 +0200
Add the missing lockdep annotation to avoid this warning:
INFO: trying to register non-static key. The code is fine but needs lockdep annotation, or maybe you didn't initialize this object before use? turning off the locking correctness validator. CPU: 0 PID: 1 Comm: swapper/0 Not tainted 6.5.0-rc5+ #681 Hardware name: 9000/785/C3700 Backtrace: [<000000004030bcd0>] show_stack+0x74/0xb0 [<0000000041469c7c>] dump_stack_lvl+0x104/0x180 [<0000000041469d2c>] dump_stack+0x34/0x48 [<000000004040e5b4>] register_lock_class+0xd24/0xd30 [<000000004040c21c>] __lock_acquire.isra.0+0xb4/0xac8 [<000000004040cd60>] lock_acquire+0x130/0x298 [<000000004146df54>] _raw_spin_lock_irq+0x60/0xb8 [<0000000041472044>] wait_for_completion+0xa0/0x2d0 [<000000004146b544>] kernel_init+0x48/0x3a8 [<0000000040302020>] ret_from_kernel_thread+0x20/0x28
Link: https://lkml.kernel.org/r/ZNZcBkiVkm87+Tvr@p100 Signed-off-by: Helge Deller deller@gmx.de Cc: Mike Rapoport (IBM) rppt@kernel.org Cc: stable@vger.kernel.org Signed-off-by: Andrew Morton akpm@linux-foundation.org ---
init/main.c | 2 ++ 1 file changed, 2 insertions(+)
--- a/init/main.c~init-add-lockdep-annotation-to-kthreadd_done-completer +++ a/init/main.c @@ -682,6 +682,8 @@ noinline void __ref __noreturn rest_init struct task_struct *tsk; int pid;
+ init_completion(&kthreadd_done); + rcu_scheduler_starting(); /* * We need to spawn init first so that it obtains pid 1, however _
Patches currently in -mm which might be from deller@gmx.de are
mm-add-lockdep-annotation-to-pgdat_init_all_done_comp-completer.patch init-add-lockdep-annotation-to-kthreadd_done-completer.patch