Merge 4.4.191 into android-4.4-p

Changes in 4.4.191
	HID: Add 044f:b320 ThrustMaster, Inc. 2 in 1 DT
	MIPS: kernel: only use i8253 clocksource with periodic clockevent
	netfilter: ebtables: fix a memory leak bug in compat
	bonding: Force slave speed check after link state recovery for 802.3ad
	can: dev: call netif_carrier_off() in register_candev()
	st21nfca_connectivity_event_received: null check the allocation
	st_nci_hci_connectivity_event_received: null check the allocation
	ASoC: ti: davinci-mcasp: Correct slot_width posed constraint
	net: usb: qmi_wwan: Add the BroadMobi BM818 card
	isdn: mISDN: hfcsusb: Fix possible null-pointer dereferences in start_isoc_chain()
	isdn: hfcsusb: Fix mISDN driver crash caused by transfer buffer on the stack
	perf bench numa: Fix cpu0 binding
	can: sja1000: force the string buffer NULL-terminated
	can: peak_usb: force the string buffer NULL-terminated
	NFSv4: Fix a potential sleep while atomic in nfs4_do_reclaim()
	net: cxgb3_main: Fix a resource leak in a error path in 'init_one()'
	net: hisilicon: make hip04_tx_reclaim non-reentrant
	net: hisilicon: fix hip04-xmit never return TX_BUSY
	net: hisilicon: Fix dma_map_single failed on arm64
	libata: add SG safety checks in SFF pio transfers
	selftests: kvm: Adding config fragments
	HID: wacom: correct misreported EKR ring values
	Revert "dm bufio: fix deadlock with loop device"
	userfaultfd_release: always remove uffd flags and clear vm_userfaultfd_ctx
	x86/retpoline: Don't clobber RFLAGS during CALL_NOSPEC on i386
	x86/apic: Handle missing global clockevent gracefully
	x86/boot: Save fields explicitly, zero out everything else
	x86/boot: Fix boot regression caused by bootparam sanitizing
	dm btree: fix order of block initialization in btree_split_beneath
	dm space map metadata: fix missing store of apply_bops() return value
	dm table: fix invalid memory accesses with too high sector number
	cgroup: Disable IRQs while holding css_set_lock
	GFS2: don't set rgrp gl_object until it's inserted into rgrp tree
	net: arc_emac: fix koops caused by sk_buff free
	vhost-net: set packet weight of tx polling to 2 * vq size
	vhost_net: use packet weight for rx handler, too
	vhost_net: introduce vhost_exceeds_weight()
	vhost: introduce vhost_exceeds_weight()
	vhost_net: fix possible infinite loop
	vhost: scsi: add weight support
	siphash: add cryptographically secure PRF
	siphash: implement HalfSipHash1-3 for hash tables
	inet: switch IP ID generator to siphash
	netfilter: ctnetlink: don't use conntrack/expect object addresses as id
	netfilter: conntrack: Use consistent ct id hash calculation
	Revert "perf test 6: Fix missing kvm module load for s390"
	x86/pm: Introduce quirk framework to save/restore extra MSR registers around suspend/resume
	x86/CPU/AMD: Clear RDRAND CPUID bit on AMD family 15h/16h
	scsi: ufs: Fix NULL pointer dereference in ufshcd_config_vreg_hpm()
	dmaengine: ste_dma40: fix unneeded variable warning
	usb: gadget: composite: Clear "suspended" on reset/disconnect
	usb: host: fotg2: restart hcd after port reset
	tools: hv: fix KVP and VSS daemons exit code
	watchdog: bcm2835_wdt: Fix module autoload
	tcp: fix tcp_rtx_queue_tail in case of empty retransmit queue
	ALSA: usb-audio: Fix a stack buffer overflow bug in check_input_term
	ALSA: usb-audio: Fix an OOB bug in parse_audio_mixer_unit
	tcp: make sure EPOLLOUT wont be missed
	ALSA: seq: Fix potential concurrent access to the deleted pool
	KVM: x86: Don't update RIP or do single-step on faulting emulation
	x86/apic: Do not initialize LDR and DFR for bigsmp
	x86/apic: Include the LDR when clearing out APIC registers
	usb-storage: Add new JMS567 revision to unusual_devs
	USB: cdc-wdm: fix race between write and disconnect due to flag abuse
	usb: host: ohci: fix a race condition between shutdown and irq
	USB: storage: ums-realtek: Update module parameter description for auto_delink_en
	USB: storage: ums-realtek: Whitelist auto-delink support
	ptrace,x86: Make user_64bit_mode() available to 32-bit builds
	uprobes/x86: Fix detection of 32-bit user mode
	mmc: sdhci-of-at91: add quirk for broken HS200
	mmc: core: Fix init of SD cards reporting an invalid VDD range
	stm class: Fix a double free of stm_source_device
	VMCI: Release resource if the work is already queued
	Revert "cfg80211: fix processing world regdomain when non modular"
	mac80211: fix possible sta leak
	x86/ptrace: fix up botched merge of spectrev1 fix
	Linux 4.4.191

Change-Id: Ic9a2554d2ba45f9c17478f1dfb5115e1a3bc3bd7
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>

1 files changed, 47 insertions, 13 deletions

diff --git a/arch/x86/include/asm/bootparam_utils.h b/arch/x86/include/asm/bootparam_utils.h
index 4a8cb8d7cbd5..0232b5a2a2d9 100644
--- a/arch/x86/include/asm/bootparam_utils.h
+++ b/arch/x86/include/asm/bootparam_utils.h
@@ -17,6 +17,20 @@
  * Note: efi_info is commonly left uninitialized, but that field has a
  * private magic, so it is better to leave it unchanged.
  */
+
+#define sizeof_mbr(type, member) ({ sizeof(((type *)0)->member); })
+
+#define BOOT_PARAM_PRESERVE(struct_member)				\
+	{								\
+		.start = offsetof(struct boot_params, struct_member),	\
+		.len   = sizeof_mbr(struct boot_params, struct_member),	\
+	}
+
+struct boot_params_to_save {
+	unsigned int start;
+	unsigned int len;
+};
+
 static void sanitize_boot_params(struct boot_params *boot_params)
 {
 	/* 
@@ -35,19 +49,39 @@ static void sanitize_boot_params(struct boot_params *boot_params)
 	 */
 	if (boot_params->sentinel) {
 		/* fields in boot_params are left uninitialized, clear them */
-		memset(&boot_params->ext_ramdisk_image, 0,
-		       (char *)&boot_params->efi_info -
-			(char *)&boot_params->ext_ramdisk_image);
-		memset(&boot_params->kbd_status, 0,
-		       (char *)&boot_params->hdr -
-		       (char *)&boot_params->kbd_status);
-		memset(&boot_params->_pad7[0], 0,
-		       (char *)&boot_params->edd_mbr_sig_buffer[0] -
-			(char *)&boot_params->_pad7[0]);
-		memset(&boot_params->_pad8[0], 0,
-		       (char *)&boot_params->eddbuf[0] -
-			(char *)&boot_params->_pad8[0]);
-		memset(&boot_params->_pad9[0], 0, sizeof(boot_params->_pad9));
+		static struct boot_params scratch;
+		char *bp_base = (char *)boot_params;
+		char *save_base = (char *)&scratch;
+		int i;
+
+		const struct boot_params_to_save to_save[] = {
+			BOOT_PARAM_PRESERVE(screen_info),
+			BOOT_PARAM_PRESERVE(apm_bios_info),
+			BOOT_PARAM_PRESERVE(tboot_addr),
+			BOOT_PARAM_PRESERVE(ist_info),
+			BOOT_PARAM_PRESERVE(hd0_info),
+			BOOT_PARAM_PRESERVE(hd1_info),
+			BOOT_PARAM_PRESERVE(sys_desc_table),
+			BOOT_PARAM_PRESERVE(olpc_ofw_header),
+			BOOT_PARAM_PRESERVE(efi_info),
+			BOOT_PARAM_PRESERVE(alt_mem_k),
+			BOOT_PARAM_PRESERVE(scratch),
+			BOOT_PARAM_PRESERVE(e820_entries),
+			BOOT_PARAM_PRESERVE(eddbuf_entries),
+			BOOT_PARAM_PRESERVE(edd_mbr_sig_buf_entries),
+			BOOT_PARAM_PRESERVE(edd_mbr_sig_buffer),
+			BOOT_PARAM_PRESERVE(hdr),
+			BOOT_PARAM_PRESERVE(eddbuf),
+		};
+
+		memset(&scratch, 0, sizeof(scratch));
+
+		for (i = 0; i < ARRAY_SIZE(to_save); i++) {
+			memcpy(save_base + to_save[i].start,
+			       bp_base + to_save[i].start, to_save[i].len);
+		}
+
+		memcpy(boot_params, save_base, sizeof(*boot_params));
 	}
 }