Merge tag 'v4.4.164' into pie

This is the 4.4.164 stable release

* tag 'v4.4.164':
  Linux 4.4.164
  drm/i915/hdmi: Add HDMI 2.0 audio clock recovery N values
  drm/dp_mst: Check if primary mstb is null
  drm/rockchip: Allow driver to be shutdown on reboot/kexec
  mm: migration: fix migration of huge PMD shared pages
  hugetlbfs: fix kernel BUG at fs/hugetlbfs/inode.c:444!
  configfs: replace strncpy with memcpy
  fuse: fix leaked notify reply
  rtc: hctosys: Add missing range error reporting
  sunrpc: correct the computation for page_ptr when truncating
  mount: Prevent MNT_DETACH from disconnecting locked mounts
  mount: Don't allow copying MNT_UNBINDABLE|MNT_LOCKED mounts
  mount: Retest MNT_LOCKED in do_umount
  ext4: fix buffer leak in __ext4_read_dirblock() on error path
  ext4: fix buffer leak in ext4_xattr_move_to_block() on error path
  ext4: release bs.bh before re-using in ext4_xattr_block_find()
  ext4: fix possible leak of sbi->s_group_desc_leak in error path
  ext4: avoid possible double brelse() in add_new_gdb() on error path
  ext4: fix missing cleanup if ext4_alloc_flex_bg_array() fails while resizing
  ext4: avoid buffer leak in ext4_orphan_add() after prior errors
  ext4: fix possible inode leak in the retry loop of ext4_resize_fs()
  ext4: avoid potential extra brelse in setup_new_flex_group_blocks()
  ext4: add missing brelse() add_new_gdb_meta_bg()'s error path
  ext4: add missing brelse() in set_flexbg_block_bitmap()'s error path
  ext4: add missing brelse() update_backups()'s error path
  clockevents/drivers/i8253: Add support for PIT shutdown quirk
  Btrfs: fix data corruption due to cloning of eof block
  arch/alpha, termios: implement BOTHER, IBSHIFT and termios2
  termios, tty/tty_baudrate.c: fix buffer overrun
  mtd: docg3: don't set conflicting BCH_CONST_PARAMS option
  mm: thp: relax __GFP_THISNODE for MADV_HUGEPAGE mappings
  ocfs2: fix a misuse a of brelse after failing ocfs2_check_dir_entry
  vhost/scsi: truncate T10 PI iov_iter to prot_bytes
  mach64: fix image corruption due to reading accelerator registers
  mach64: fix display corruption on big endian machines
  libceph: bump CEPH_MSG_MAX_DATA_LEN
  clk: s2mps11: Fix matching when built as module and DT node contains compatible
  xtensa: fix boot parameters address translation
  xtensa: make sure bFLT stack is 16 byte aligned
  xtensa: add NOTES section to the linker script
  MIPS: Loongson-3: Fix BRIDGE irq delivery problem
  MIPS: Loongson-3: Fix CPU UART irq delivery problem
  bna: ethtool: Avoid reading past end of buffer
  e1000: fix race condition between e1000_down() and e1000_watchdog
  e1000: avoid null pointer dereference on invalid stat type
  mm: do not bug_on on incorrect length in __mm_populate()
  fs, elf: make sure to page align bss in load_elf_library
  mm: refuse wrapped vm_brk requests
  binfmt_elf: fix calculations for bss padding
  mm, elf: handle vm_brk error
  fuse: set FR_SENT while locked
  fuse: fix blocked_waitq wakeup
  fuse: Fix use-after-free in fuse_dev_do_write()
  fuse: Fix use-after-free in fuse_dev_do_read()
  scsi: qla2xxx: Fix incorrect port speed being set for FC adapters
  cdrom: fix improper type cast, which can leat to information leak.
  9p: clear dangling pointers in p9stat_free
  9p locks: fix glock.client_id leak in do_lock
  media: tvp5150: fix width alignment during set_selection()
  sc16is7xx: Fix for multi-channel stall
  powerpc/boot: Ensure _zimage_start is a weak symbol
  MIPS: kexec: Mark CPU offline before disabling local IRQ
  media: pci: cx23885: handle adding to list failure
  drm/omap: fix memory barrier bug in DMM driver
  powerpc/nohash: fix undefined behaviour when testing page size support
  tty: check name length in tty_find_polling_driver()
  MD: fix invalid stored role for a disk - try2
  btrfs: set max_extent_size properly
  Btrfs: fix null pointer dereference on compressed write path error
  btrfs: qgroup: Dirty all qgroups before rescan
  Btrfs: fix wrong dentries after fsync of file that got its parent replaced
  btrfs: make sure we create all new block groups
  btrfs: reset max_extent_size on clear in a bitmap
  btrfs: wait on caching when putting the bg cache
  btrfs: don't attempt to trim devices that don't support it
  btrfs: iterate all devices during trim, instead of fs_devices::alloc_list
  btrfs: locking: Add extra check in btrfs_init_new_buffer() to avoid deadlock
  btrfs: Handle owner mismatch gracefully when walking up tree
  soc/tegra: pmc: Fix child-node lookup
  arm64: dts: stratix10: Correct System Manager register size
  Cramfs: fix abad comparison when wrap-arounds occur
  ext4: avoid running out of journal credits when appending to an inline file
  media: em28xx: make v4l2-compliance happier by starting sequence on zero
  media: em28xx: fix input name for Terratec AV 350
  media: em28xx: use a default format if TRY_FMT fails
  xen: fix xen_qlock_wait()
  kgdboc: Passing ekgdboc to command line causes panic
  TC: Set DMA masks for devices
  MIPS: OCTEON: fix out of bounds array access on CN68XX
  powerpc/msi: Fix compile error on mpc83xx
  dm ioctl: harden copy_params()'s copy_from_user() from malicious users
  lockd: fix access beyond unterminated strings in prints
  nfsd: Fix an Oops in free_session()
  NFSv4.1: Fix the r/wsize checking
  genirq: Fix race on spurious interrupt detection
  printk: Fix panic caused by passing log_buf_len to command line
  smb3: on kerberos mount if server doesn't specify auth type use krb5
  smb3: do not attempt cifs operation in smb3 query info error path
  smb3: allow stats which track session and share reconnects to be reset
  w1: omap-hdq: fix missing bus unregister at removal
  iio: adc: at91: fix wrong channel number in triggered buffer mode
  iio: adc: at91: fix acking DRDY irq on simple conversions
  kbuild: fix kernel/bounds.c 'W=1' warning
  hugetlbfs: dirty pages as they are added to pagecache
  ima: fix showing large 'violations' or 'runtime_measurements_count'
  crypto: lrw - Fix out-of bounds access on counter overflow
  signal/GenWQE: Fix sending of SIGKILL
  PCI: Add Device IDs for Intel GPU "spurious interrupt" quirk
  HID: hiddev: fix potential Spectre v1
  ext4: initialize retries variable in ext4_da_write_inline_data_begin()
  gfs2_meta: ->mount() can get NULL dev_name
  jbd2: fix use after free in jbd2_log_do_checkpoint()
  libnvdimm: Hold reference on parent while scheduling async init
  net/ipv4: defensive cipso option parsing
  xen: make xen_qlock_wait() nestable
  xen: fix race in xen_qlock_wait()
  tpm: Restore functionality to xen vtpm driver.
  xen-swiotlb: use actually allocated size on check physical continuous
  ALSA: hda: Check the non-cached stream buffers more explicitly
  dmaengine: dma-jz4780: Return error if not probed from DT
  signal: Always deliver the kernel's SIGKILL and SIGSTOP to a pid namespace init
  scsi: lpfc: Correct soft lockup when running mds diagnostics
  uio: ensure class is registered before devices
  driver/dma/ioat: Call del_timer_sync() without holding prep_lock
  usb: chipidea: Prevent unbalanced IRQ disable
  MD: fix invalid stored role for a disk
  ext4: fix argument checking in EXT4_IOC_MOVE_EXT
  tpm: suppress transmit cmd error logs when TPM 1.2 is disabled/deactivated
  scsi: megaraid_sas: fix a missing-check bug
  scsi: esp_scsi: Track residual for PIO transfers
  ath10k: schedule hardware restart if WMI command times out
  pinctrl: ssbi-gpio: Fix pm8xxx_pin_config_get() to be compliant
  pinctrl: spmi-mpp: Fix pmic_mpp_config_get() to be compliant
  pinctrl: qcom: spmi-mpp: Fix drive strength setting
  ACPI / LPSS: Add alternative ACPI HIDs for Cherry Trail DMA controllers
  kprobes: Return error if we fail to reuse kprobe instead of BUG_ON()
  pinctrl: qcom: spmi-mpp: Fix err handling of pmic_mpp_set_mux
  x86: boot: Fix EFI stub alignment
  Bluetooth: btbcm: Add entry for BCM4335C0 UART bluetooth
  mmc: sdhci-pci-o2micro: Add quirk for O2 Micro dev 0x8620 rev 0x01
  perf tools: Cleanup trace-event-info 'tdata' leak
  perf tools: Free temporary 'sys' string in read_event_files()
  tun: Consistently configure generic netdev params via rtnetlink
  swim: fix cleanup on setup error
  ataflop: fix error handling during setup
  locking/lockdep: Fix debug_locks off performance problem
  selftests: ftrace: Add synthetic event syntax testcase
  net: qla3xxx: Remove overflowing shift statement
  x86/fpu: Remove second definition of fpu in __fpu__restore_sig()
  sparc: Fix single-pcr perf event counter management.
  x86/kconfig: Fall back to ticket spinlocks
  x86/corruption-check: Fix panic in memory_corruption_check() when boot option without value is provided
  ALSA: ca0106: Disable IZD on SB0570 DAC to fix audio pops
  ALSA: hda - Add mic quirk for the Lenovo G50-30 (17aa:3905)
  parisc: Fix map_pages() to not overwrite existing pte entries
  parisc: Fix address in HPMC IVA
  ipmi: Fix timer race with module unload
  pcmcia: Implement CLKRUN protocol disabling for Ricoh bridges
  jffs2: free jffs2_sb_info through jffs2_kill_sb()
  hwmon: (pmbus) Fix page count auto-detection.
  bcache: fix miss key refill->end in writeback

Signed-off-by: Abhishek AN <darkabhi1520@gmail.com>

Makefile

@@ -1,6 +1,6 @@
 VERSION = 4
 PATCHLEVEL = 4
-SUBLEVEL = 163
+SUBLEVEL = 164
 EXTRAVERSION =
 NAME = Blurry Fish Butt
 

arch/alpha/include/asm/termios.h

@@ -72,9 +72,15 @@
 })
 
 #define user_termios_to_kernel_termios(k, u) \
-	copy_from_user(k, u, sizeof(struct termios))
+	copy_from_user(k, u, sizeof(struct termios2))
 
 #define kernel_termios_to_user_termios(u, k) \
+	copy_to_user(u, k, sizeof(struct termios2))
+
+#define user_termios_to_kernel_termios_1(k, u) \
+	copy_from_user(k, u, sizeof(struct termios))
+
+#define kernel_termios_to_user_termios_1(u, k) \
 	copy_to_user(u, k, sizeof(struct termios))
 
 #endif	/* _ALPHA_TERMIOS_H */

arch/alpha/include/uapi/asm/ioctls.h

@@ -31,6 +31,11 @@
 #define TCXONC		_IO('t', 30)
 #define TCFLSH		_IO('t', 31)
 
+#define TCGETS2		_IOR('T', 42, struct termios2)
+#define TCSETS2		_IOW('T', 43, struct termios2)
+#define TCSETSW2	_IOW('T', 44, struct termios2)
+#define TCSETSF2	_IOW('T', 45, struct termios2)
+
 #define TIOCSWINSZ	_IOW('t', 103, struct winsize)
 #define TIOCGWINSZ	_IOR('t', 104, struct winsize)
 #define	TIOCSTART	_IO('t', 110)		/* start output, like ^Q */

arch/alpha/include/uapi/asm/termbits.h

@@ -25,6 +25,19 @@ struct termios {
 	speed_t c_ospeed;		/* output speed */
 };
 
+/* Alpha has identical termios and termios2 */
+
+struct termios2 {
+	tcflag_t c_iflag;		/* input mode flags */
+	tcflag_t c_oflag;		/* output mode flags */
+	tcflag_t c_cflag;		/* control mode flags */
+	tcflag_t c_lflag;		/* local mode flags */
+	cc_t c_cc[NCCS];		/* control characters */
+	cc_t c_line;			/* line discipline (== c_cc[19]) */
+	speed_t c_ispeed;		/* input speed */
+	speed_t c_ospeed;		/* output speed */
+};
+
 /* Alpha has matching termios and ktermios */
 
 struct ktermios {
@@ -147,6 +160,7 @@ struct ktermios {
 #define B3000000  00034
 #define B3500000  00035
 #define B4000000  00036
+#define BOTHER    00037
 
 #define CSIZE	00001400
 #define   CS5	00000000
@@ -164,6 +178,9 @@ struct ktermios {
 #define CMSPAR	  010000000000		/* mark or space (stick) parity */
 #define CRTSCTS	  020000000000		/* flow control */
 
+#define CIBAUD	07600000
+#define IBSHIFT	16
+
 /* c_lflag bits */
 #define ISIG	0x00000080
 #define ICANON	0x00000100

arch/arm64/boot/dts/altera/socfpga_stratix10.dtsi

@@ -249,7 +249,7 @@
 
 		sysmgr: sysmgr@ffd12000 {
 			compatible = "altr,sys-mgr", "syscon";
-			reg = <0xffd12000 0x1000>;
+			reg = <0xffd12000 0x228>;
 		};
 
 		/* Local timer */

arch/mips/cavium-octeon/executive/cvmx-helper.c

@@ -67,7 +67,7 @@ void (*cvmx_override_pko_queue_priority) (int pko_port,
 void (*cvmx_override_ipd_port_setup) (int ipd_port);
 
 /* Port count per interface */
-static int interface_port_count[5];
+static int interface_port_count[9];
 
 /* Port last configured link info index by IPD/PKO port */
 static cvmx_helper_link_info_t

arch/mips/include/asm/mach-loongson64/irq.h

@@ -9,7 +9,7 @@
 #define MIPS_CPU_IRQ_BASE 56
 
 #define LOONGSON_UART_IRQ   (MIPS_CPU_IRQ_BASE + 2) /* UART */
-#define LOONGSON_HT1_IRQ    (MIPS_CPU_IRQ_BASE + 3) /* HT1 */
+#define LOONGSON_BRIDGE_IRQ (MIPS_CPU_IRQ_BASE + 3) /* CASCADE */
 #define LOONGSON_TIMER_IRQ  (MIPS_CPU_IRQ_BASE + 7) /* CPU Timer */
 
 #define LOONGSON_HT1_CFG_BASE		loongson_sysconf.ht_control_base

arch/mips/kernel/crash.c

@@ -34,6 +34,9 @@ static void crash_shutdown_secondary(void *passed_regs)
 	if (!cpu_online(cpu))
 		return;
 
+	/* We won't be sent IPIs any more. */
+	set_cpu_online(cpu, false);
+
 	local_irq_disable();
 	if (!cpumask_test_cpu(cpu, &cpus_in_crash))
 		crash_save_cpu(regs, cpu);

arch/mips/kernel/machine_kexec.c

@@ -95,6 +95,9 @@ machine_kexec(struct kimage *image)
 			*ptr = (unsigned long) phys_to_virt(*ptr);
 	}
 
+	/* Mark offline BEFORE disabling local irq. */
+	set_cpu_online(smp_processor_id(), false);
+
 	/*
 	 * we do not want to be bothered.
 	 */

arch/mips/loongson64/loongson-3/irq.c

@@ -42,51 +42,8 @@ void mach_irq_dispatch(unsigned int pending)
 	}
 }
 
-static struct irqaction cascade_irqaction = {
-	.handler = no_action,
-	.flags = IRQF_NO_SUSPEND,
-	.name = "cascade",
-};
-
-static inline void mask_loongson_irq(struct irq_data *d)
-{
-	clear_c0_status(0x100 << (d->irq - MIPS_CPU_IRQ_BASE));
-	irq_disable_hazard();
-
-	/* Workaround: UART IRQ may deliver to any core */
-	if (d->irq == LOONGSON_UART_IRQ) {
-		int cpu = smp_processor_id();
-		int node_id = cpu_logical_map(cpu) / loongson_sysconf.cores_per_node;
-		int core_id = cpu_logical_map(cpu) % loongson_sysconf.cores_per_node;
-		u64 intenclr_addr = smp_group[node_id] |
-			(u64)(&LOONGSON_INT_ROUTER_INTENCLR);
-		u64 introuter_lpc_addr = smp_group[node_id] |
-			(u64)(&LOONGSON_INT_ROUTER_LPC);
-
-		*(volatile u32 *)intenclr_addr = 1 << 10;
-		*(volatile u8 *)introuter_lpc_addr = 0x10 + (1<<core_id);
-	}
-}
-
-static inline void unmask_loongson_irq(struct irq_data *d)
-{
-	/* Workaround: UART IRQ may deliver to any core */
-	if (d->irq == LOONGSON_UART_IRQ) {
-		int cpu = smp_processor_id();
-		int node_id = cpu_logical_map(cpu) / loongson_sysconf.cores_per_node;
-		int core_id = cpu_logical_map(cpu) % loongson_sysconf.cores_per_node;
-		u64 intenset_addr = smp_group[node_id] |
-			(u64)(&LOONGSON_INT_ROUTER_INTENSET);
-		u64 introuter_lpc_addr = smp_group[node_id] |
-			(u64)(&LOONGSON_INT_ROUTER_LPC);
-
-		*(volatile u32 *)intenset_addr = 1 << 10;
-		*(volatile u8 *)introuter_lpc_addr = 0x10 + (1<<core_id);
-	}
-
-	set_c0_status(0x100 << (d->irq - MIPS_CPU_IRQ_BASE));
-	irq_enable_hazard();
-}
+static inline void mask_loongson_irq(struct irq_data *d) { }
+static inline void unmask_loongson_irq(struct irq_data *d) { }
 
  /* For MIPS IRQs which shared by all cores */
 static struct irq_chip loongson_irq_chip = {
@@ -124,12 +81,11 @@ void __init mach_init_irq(void)
 	mips_cpu_irq_init();
 	init_i8259_irqs();
 	irq_set_chip_and_handler(LOONGSON_UART_IRQ,
-			&loongson_irq_chip, handle_level_irq);
-
-	/* setup HT1 irq */
-	setup_irq(LOONGSON_HT1_IRQ, &cascade_irqaction);
+			&loongson_irq_chip, handle_percpu_irq);
+	irq_set_chip_and_handler(LOONGSON_BRIDGE_IRQ,
+			&loongson_irq_chip, handle_percpu_irq);
 
-	set_c0_status(STATUSF_IP2 | STATUSF_IP6);
+	set_c0_status(STATUSF_IP2 | STATUSF_IP3 | STATUSF_IP6);
 }
 
 #ifdef CONFIG_HOTPLUG_CPU

arch/parisc/kernel/entry.S

@@ -185,7 +185,7 @@
 	bv,n	0(%r3)
 	nop
 	.word	0		/* checksum (will be patched) */
-	.word	PA(os_hpmc)	/* address of handler */
+	.word	0		/* address of handler */
 	.word	0		/* length of handler */
 	.endm
 

arch/parisc/kernel/traps.c

@@ -829,7 +829,8 @@ void __init initialize_ivt(const void *iva)
 	for (i = 0; i < 8; i++)
 	    *ivap++ = 0;
 
-	/* Compute Checksum for HPMC handler */
+	/* Setup IVA and compute checksum for HPMC handler */
+	ivap[6] = (u32)__pa(os_hpmc);
 	length = os_hpmc_size;
 	ivap[7] = length;
 

arch/parisc/mm/init.c

@@ -491,12 +491,8 @@ static void __init map_pages(unsigned long start_vaddr,
 						pte = pte_mkhuge(pte);
 				}
 
-				if (address >= end_paddr) {
-					if (force)
-						break;
-					else
-						pte_val(pte) = 0;
-				}
+				if (address >= end_paddr)
+					break;
 
 				set_pte(pg_table, pte);
 

arch/powerpc/boot/crt0.S

@@ -47,8 +47,10 @@ p_end:		.long	_end
 p_pstack:	.long	_platform_stack_top
 #endif
 
-	.weak	_zimage_start
 	.globl	_zimage_start
+	/* Clang appears to require the .weak directive to be after the symbol
+	 * is defined. See https://bugs.llvm.org/show_bug.cgi?id=38921  */
+	.weak	_zimage_start
 _zimage_start:
 	.globl	_zimage_start_lib
 _zimage_start_lib:

arch/powerpc/include/asm/mpic.h

@@ -392,7 +392,14 @@ extern struct bus_type mpic_subsys;
 #define	MPIC_REGSET_TSI108		MPIC_REGSET(1)	/* Tsi108/109 PIC */
 
 /* Get the version of primary MPIC */
+#ifdef CONFIG_MPIC
 extern u32 fsl_mpic_primary_get_version(void);
+#else
+static inline u32 fsl_mpic_primary_get_version(void)
+{
+	return 0;
+}
+#endif
 
 /* Allocate the controller structure and setup the linux irq descs
  * for the range if interrupts passed in. No HW initialization is

arch/powerpc/mm/tlb_nohash.c

@@ -487,6 +487,9 @@ static void setup_page_sizes(void)
 		for (psize = 0; psize < MMU_PAGE_COUNT; ++psize) {
 			struct mmu_psize_def *def = &mmu_psize_defs[psize];
 
+			if (!def->shift)
+				continue;
+
 			if (tlb1ps & (1U << (def->shift - 10))) {
 				def->flags |= MMU_PAGE_SIZE_DIRECT;
 

arch/sparc/kernel/perf_event.c

@@ -926,6 +926,8 @@ static void read_in_all_counters(struct cpu_hw_events *cpuc)
 			sparc_perf_event_update(cp, &cp->hw,
 						cpuc->current_idx[i]);
 			cpuc->current_idx[i] = PIC_NO_INDEX;
+			if (cp->hw.state & PERF_HES_STOPPED)
+				cp->hw.state |= PERF_HES_ARCH;
 		}
 	}
 }
@@ -958,10 +960,12 @@ static void calculate_single_pcr(struct cpu_hw_events *cpuc)
 
 		enc = perf_event_get_enc(cpuc->events[i]);
 		cpuc->pcr[0] &= ~mask_for_index(idx);
-		if (hwc->state & PERF_HES_STOPPED)
+		if (hwc->state & PERF_HES_ARCH) {
 			cpuc->pcr[0] |= nop_for_index(idx);
-		else
+		} else {
 			cpuc->pcr[0] |= event_encoding(enc, idx);
+			hwc->state = 0;
+		}
 	}
 out:
 	cpuc->pcr[0] |= cpuc->event[0]->hw.config_base;
@@ -987,6 +991,9 @@ static void calculate_multiple_pcrs(struct cpu_hw_events *cpuc)
 
 		cpuc->current_idx[i] = idx;
 
+		if (cp->hw.state & PERF_HES_ARCH)
+			continue;
+
 		sparc_pmu_start(cp, PERF_EF_RELOAD);
 	}
 out:
@@ -1078,6 +1085,8 @@ static void sparc_pmu_start(struct perf_event *event, int flags)
 	event->hw.state = 0;
 
 	sparc_pmu_enable_event(cpuc, &event->hw, idx);
+
+	perf_event_update_userpage(event);
 }
 
 static void sparc_pmu_stop(struct perf_event *event, int flags)
@@ -1370,9 +1379,9 @@ static int sparc_pmu_add(struct perf_event *event, int ef_flags)
 	cpuc->events[n0] = event->hw.event_base;
 	cpuc->current_idx[n0] = PIC_NO_INDEX;
 
-	event->hw.state = PERF_HES_UPTODATE;
+	event->hw.state = PERF_HES_UPTODATE | PERF_HES_STOPPED;
 	if (!(ef_flags & PERF_EF_START))
-		event->hw.state |= PERF_HES_STOPPED;
+		event->hw.state |= PERF_HES_ARCH;
 
 	/*
 	 * If group events scheduling transaction was started,

arch/x86/Kconfig

@@ -43,7 +43,6 @@ config X86
 	select ARCH_USE_BUILTIN_BSWAP
 	select ARCH_USE_CMPXCHG_LOCKREF		if X86_64
 	select ARCH_USE_QUEUED_RWLOCKS
-	select ARCH_USE_QUEUED_SPINLOCKS
 	select ARCH_WANT_BATCHED_UNMAP_TLB_FLUSH
 	select ARCH_WANTS_DYNAMIC_TASK_STRUCT
 	select ARCH_WANT_FRAME_POINTERS

arch/x86/boot/tools/build.c

@@ -391,6 +391,13 @@ int main(int argc, char ** argv)
 		die("Unable to mmap '%s': %m", argv[2]);
 	/* Number of 16-byte paragraphs, including space for a 4-byte CRC */
 	sys_size = (sz + 15 + 4) / 16;
+#ifdef CONFIG_EFI_STUB
+	/*
+	 * COFF requires minimum 32-byte alignment of sections, and
+	 * adding a signature is problematic without that alignment.
+	 */
+	sys_size = (sys_size + 1) & ~1;
+#endif
 
 	/* Patch the setup code with the appropriate size parameters */
 	buf[0x1f1] = setup_sectors-1;

arch/x86/kernel/check.c

@@ -30,6 +30,11 @@ static __init int set_corruption_check(char *arg)
 	ssize_t ret;
 	unsigned long val;
 
+	if (!arg) {
+		pr_err("memory_corruption_check config string not provided\n");
+		return -EINVAL;
+	}
+
 	ret = kstrtoul(arg, 10, &val);
 	if (ret)
 		return ret;
@@ -44,6 +49,11 @@ static __init int set_corruption_check_period(char *arg)
 	ssize_t ret;
 	unsigned long val;
 
+	if (!arg) {
+		pr_err("memory_corruption_check_period config string not provided\n");
+		return -EINVAL;
+	}
+
 	ret = kstrtoul(arg, 10, &val);
 	if (ret)
 		return ret;
@@ -58,6 +68,11 @@ static __init int set_corruption_check_size(char *arg)
 	char *end;
 	unsigned size;
 
+	if (!arg) {
+		pr_err("memory_corruption_check_size config string not provided\n");
+		return -EINVAL;
+	}
+
 	size = memparse(arg, &end);
 
 	if (*end == '\0')

arch/x86/kernel/fpu/signal.c

@@ -294,7 +294,6 @@ static int __fpu__restore_sig(void __user *buf, void __user *buf_fx, int size)
 		 * thread's fpu state, reconstruct fxstate from the fsave
 		 * header. Sanitize the copied state etc.
 		 */
-		struct fpu *fpu = &tsk->thread.fpu;
 		struct user_i387_ia32_struct env;
 		int err = 0;