This is a note to let you know that I've just added the patch titled pstore: Use dynamic spinlock initializer to the 4.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: pstore-use-dynamic-spinlock-initializer.patch and it can be found in the queue-4.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From e9a330c4289f2ba1ca4bf98c2b430ab165a8931b Mon Sep 17 00:00:00 2001 From: Kees Cook <keescook@xxxxxxxxxxxx> Date: Sun, 5 Mar 2017 22:08:58 -0800 Subject: pstore: Use dynamic spinlock initializer From: Kees Cook <keescook@xxxxxxxxxxxx> commit e9a330c4289f2ba1ca4bf98c2b430ab165a8931b upstream. The per-prz spinlock should be using the dynamic initializer so that lockdep can correctly track it. Without this, under lockdep, we get a warning at boot that the lock is in non-static memory. Fixes: 109704492ef6 ("pstore: Make spinlock per zone instead of global") Fixes: 76d5692a5803 ("pstore: Correctly initialize spinlock and flags") Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- fs/pstore/ram_core.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/fs/pstore/ram_core.c +++ b/fs/pstore/ram_core.c @@ -489,7 +489,7 @@ struct persistent_ram_zone *persistent_r } /* Initialize general buffer state. */ - prz->buffer_lock = __RAW_SPIN_LOCK_UNLOCKED(buffer_lock); + raw_spin_lock_init(&prz->buffer_lock); prz->flags = flags; ret = persistent_ram_buffer_map(start, size, prz, memtype); Patches currently in stable-queue which might be from keescook@xxxxxxxxxxxx are queue-4.4/pstore-make-spinlock-per-zone-instead-of-global.patch queue-4.4/pstore-correctly-initialize-spinlock-and-flags.patch queue-4.4/pstore-allow-prz-to-control-need-for-locking.patch queue-4.4/isdn-i4l-fix-buffer-overflow.patch queue-4.4/pstore-use-dynamic-spinlock-initializer.patch