What has been fixed in kernel 3.12.3:

•     ALSA: hda – Fix hp-mic mode without VREF bits
•     cpuset: Fix memory allocator deadlock
•     HID: lg: fix ReportDescriptor for Logitech Formula Vibration
•     GFS2: Fix ref count bug relating to atomic_open
•     sh: ecovec: fixup compile error on sdhi
•     drm/radeon: fix UVD destroy IB size
•     drm/radeon/si: fix define for MC_SEQ_TRAIN_WAKEUP_CNTL
•     rtlwifi: rtl8188ee: Fix smatch warning in rtl8188ee/hw.c

For full changelog, go here.