| From | Greg Kroah-Hartman <> | Subject | [PATCH 3.18 36/92] pstore: Use dynamic spinlock initializer | Date | Wed, 9 Aug 2017 13:37:04 -0700 |
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3.18-stable review patch. If anyone has any objections, please let me know.
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From: Kees Cook <keescook@chromium.org>
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@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
--- 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 @@ -528,7 +528,7 @@ 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);
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