Merge 3.18.57 into android-3.18

Changes in 3.18.57
	bnx2x: Fix Multi-Cos
	ipv6: xfrm: Handle errors reported by xfrm6_find_1stfragopt()
	cxgb4: avoid enabling napi twice to the same queue
	tcp: disallow cwnd undo when switching congestion control
	ipv6: Fix leak in ipv6_gso_segment().
	net: ping: do not abuse udp_poll()
	net: ethoc: enable NAPI before poll may be scheduled
	serial: ifx6x60: fix use-after-free on module unload
	KEYS: fix dereferencing NULL payload with nonzero length
	KEYS: fix freeing uninitialized memory in key_update()
	crypto: gcm - wait for crypto op not signal safe
	nfsd4: fix null dereference on replay
	kvm: async_pf: fix rcu_irq_enter() with irqs enabled
	KVM: cpuid: Fix read/write out-of-bounds vulnerability in cpuid emulation
	arm: KVM: Allow unaligned accesses at HYP
	dmaengine: ep93xx: Always start from BASE0
	ext4: fix SEEK_HOLE
	ext4: keep existing extra fields when inode expands
	usb: gadget: f_mass_storage: Serialize wake and sleep execution
	usb: chipidea: udc: fix NULL pointer dereference if udc_start failed
	usb: chipidea: debug: check before accessing ci_role
	staging/lustre/lov: remove set_fs() call from lov_getstripe()
	iio: proximity: as3935: fix AS3935_INT mask
	drivers: char: random: add get_random_long()
	random: properly align get_random_int_hash
	stackprotector: Increase the per-task stack canary's random range from 32 bits to 64 bits on 64-bit platforms
	btrfs: use correct types for page indices in btrfs_page_exists_in_range
	btrfs: fix memory leak in update_space_info failure path
	scsi: qla2xxx: don't disable a not previously enabled PCI device
	powerpc/eeh: Avoid use after free in eeh_handle_special_event()
	powerpc/numa: Fix percpu allocations to be NUMA aware
	perf/core: Drop kernel samples even though :u is specified
	drm/vmwgfx: Handle vmalloc() failure in vmw_local_fifo_reserve()
	drm/vmwgfx: limit the number of mip levels in vmw_gb_surface_define_ioctl()
	ALSA: timer: Fix missing queue indices reset at SNDRV_TIMER_IOCTL_SELECT
	ASoC: Fix use-after-free at card unregistration
	drivers: char: mem: Fix wraparound check to allow mappings up to the end
	serial: sh-sci: Fix panic when serial console and DMA are enabled
	arm64: hw_breakpoint: fix watchpoint matching for tagged pointers
	arm64: entry: improve data abort handling of tagged pointers
	RDMA/qib,hfi1: Fix MR reference count leak on write with immediate
	usercopy: Adjust tests to deal with SMAP/PAN
	arm64: ensure extension of smp_store_release value
	mlx5: stop including <asm-generic/kmap_types.h>
	ALSA: timer: Fix race between read and ioctl
	Linux 3.18.57

Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>