40 files changed, 283 insertions, 213 deletions

diff --git a/arch/m32r/Kconfig b/arch/m32r/Kconfig
index c41234f1b825..3a9319f93e89 100644
--- a/arch/m32r/Kconfig
+++ b/arch/m32r/Kconfig
@@ -11,6 +11,9 @@ config M32R
         select HAVE_IDE
         select HAVE_OPROFILE
         select INIT_ALL_POSSIBLE
+        select HAVE_KERNEL_GZIP
+        select HAVE_KERNEL_BZIP2
+        select HAVE_KERNEL_LZMA
 
 config SBUS
         bool
diff --git a/arch/m32r/boot/compressed/Makefile b/arch/m32r/boot/compressed/Makefile
index 560484ae35ec..1003880d0dfd 100644
--- a/arch/m32r/boot/compressed/Makefile
+++ b/arch/m32r/boot/compressed/Makefile
@@ -4,8 +4,8 @@
 # create a compressed vmlinux image from the original vmlinux
 #
 
-targets         := vmlinux vmlinux.bin vmlinux.bin.gz head.o misc.o \
-                   piggy.o vmlinux.lds
+targets         := vmlinux vmlinux.bin vmlinux.bin.gz vmlinux.bin.bz2 \
+                   vmlinux.bin.lzma head.o misc.o piggy.o vmlinux.lds
 
 OBJECTS = $(obj)/head.o $(obj)/misc.o
 
@@ -27,6 +27,12 @@ $(obj)/vmlinux.bin: vmlinux FORCE
 $(obj)/vmlinux.bin.gz: $(obj)/vmlinux.bin FORCE
         $(call if_changed,gzip)
 
+$(obj)/vmlinux.bin.bz2: $(obj)/vmlinux.bin FORCE
+        $(call if_changed,bzip2)
+
+$(obj)/vmlinux.bin.lzma: $(obj)/vmlinux.bin FORCE
+        $(call if_changed,lzma)
+
 CFLAGS_misc.o += -fpic
 
 ifdef CONFIG_MMU
@@ -37,5 +43,9 @@ endif
 
 OBJCOPYFLAGS += -R .empty_zero_page
 
-$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.gz FORCE
+suffix_$(CONFIG_KERNEL_GZIP)    = gz
+suffix_$(CONFIG_KERNEL_BZIP2)   = bz2
+suffix_$(CONFIG_KERNEL_LZMA)    = lzma
+
+$(obj)/piggy.o: $(obj)/vmlinux.scr $(obj)/vmlinux.bin.$(suffix_y) FORCE
         $(call if_changed,ld)
diff --git a/arch/m32r/boot/compressed/misc.c b/arch/m32r/boot/compressed/misc.c
index d394292498c0..370d60881977 100644
--- a/arch/m32r/boot/compressed/misc.c
+++ b/arch/m32r/boot/compressed/misc.c
@@ -9,140 +9,49 @@
  * Adapted for SH by Stuart Menefy, Aug 1999
  *
  * 2003-02-12:  Support M32R by Takeo Takahashi
- *              This is based on arch/sh/boot/compressed/misc.c.
  */
 
-#include <linux/string.h>
-
 /*
  * gzip declarations
  */
-
-#define OF(args)  args
 #define STATIC static
 
 #undef memset
 #undef memcpy
 #define memzero(s, n)     memset ((s), 0, (n))
 
-typedef unsigned char  uch;
-typedef unsigned short ush;
-typedef unsigned long  ulg;
-
-#define WSIZE 0x8000            /* Window size must be at least 32k, */
-                                /* and a power of two */
-
-static uch *inbuf;           /* input buffer */
-static uch window[WSIZE];    /* Sliding window buffer */
-
-static unsigned insize = 0;  /* valid bytes in inbuf */
-static unsigned inptr = 0;   /* index of next byte to be processed in inbuf */
-static unsigned outcnt = 0;  /* bytes in output buffer */
-
-/* gzip flag byte */
-#define ASCII_FLAG   0x01 /* bit 0 set: file probably ASCII text */
-#define CONTINUATION 0x02 /* bit 1 set: continuation of multi-part gzip file */
-#define EXTRA_FIELD  0x04 /* bit 2 set: extra field present */
-#define ORIG_NAME    0x08 /* bit 3 set: original file name present */
-#define COMMENT      0x10 /* bit 4 set: file comment present */
-#define ENCRYPTED    0x20 /* bit 5 set: file is encrypted */
-#define RESERVED     0xC0 /* bit 6,7:   reserved */
-
-#define get_byte()  (inptr < insize ? inbuf[inptr++] : fill_inbuf())
-
-/* Diagnostic functions */
-#ifdef DEBUG
-#  define Assert(cond,msg) {if(!(cond)) error(msg);}
-#  define Trace(x) fprintf x
-#  define Tracev(x) {if (verbose) fprintf x ;}
-#  define Tracevv(x) {if (verbose>1) fprintf x ;}
-#  define Tracec(c,x) {if (verbose && (c)) fprintf x ;}
-#  define Tracecv(c,x) {if (verbose>1 && (c)) fprintf x ;}
-#else
-#  define Assert(cond,msg)
-#  define Trace(x)
-#  define Tracev(x)
-#  define Tracevv(x)
-#  define Tracec(c,x)
-#  define Tracecv(c,x)
-#endif
-
-static int  fill_inbuf(void);
-static void flush_window(void);
 static void error(char *m);
 
-static unsigned char *input_data;
-static int input_len;
-
-static long bytes_out = 0;
-static uch *output_data;
-static unsigned long output_ptr = 0;
-
 #include "m32r_sio.c"
 
 static unsigned long free_mem_ptr;
 static unsigned long free_mem_end_ptr;
 
-#define HEAP_SIZE             0x10000
-
-#include "../../../../lib/inflate.c"
-
-void* memset(void* s, int c, size_t n)
+#ifdef CONFIG_KERNEL_BZIP2
+static void *memset(void *s, int c, size_t n)
 {
-        int i;
-        char *ss = (char*)s;
+        char *ss = s;
 
-        for (i=0;i<n;i++) ss[i] = c;
+        while (n--)
+                *ss++ = c;
         return s;
 }
+#endif
 
-void* memcpy(void* __dest, __const void* __src,
-                            size_t __n)
-{
-        int i;
-        char *d = (char *)__dest, *s = (char *)__src;
-
-        for (i=0;i<__n;i++) d[i] = s[i];
-        return __dest;
-}
-
-/* ===========================================================================
- * Fill the input buffer. This is called only when the buffer is empty
- * and at least one byte is really needed.
- */
-static int fill_inbuf(void)
-{
-        if (insize != 0) {
-                error("ran out of input data");
-        }
-
-        inbuf = input_data;
-        insize = input_len;
-        inptr = 1;
-        return inbuf[0];
-}
+#ifdef CONFIG_KERNEL_GZIP
+#define BOOT_HEAP_SIZE             0x10000
+#include "../../../../lib/decompress_inflate.c"
+#endif
 
-/* ===========================================================================
- * Write the output window window[0..outcnt-1] and update crc and bytes_out.
- * (Used for the decompressed data only.)
- */
-static void flush_window(void)
-{
-    ulg c = crc;         /* temporary variable */
-    unsigned n;
-    uch *in, *out, ch;
+#ifdef CONFIG_KERNEL_BZIP2
+#define BOOT_HEAP_SIZE             0x400000
+#include "../../../../lib/decompress_bunzip2.c"
+#endif
 
-    in = window;
-    out = &output_data[output_ptr];
-    for (n = 0; n < outcnt; n++) {
-            ch = *out++ = *in++;
-            c = crc_32_tab[((int)c ^ ch) & 0xff] ^ (c >> 8);
-    }
-    crc = c;
-    bytes_out += (ulg)outcnt;
-    output_ptr += (ulg)outcnt;
-    outcnt = 0;
-}
+#ifdef CONFIG_KERNEL_LZMA
+#define BOOT_HEAP_SIZE             0x10000
+#include "../../../../lib/decompress_unlzma.c"
+#endif
 
 static void error(char *x)
 {
@@ -153,20 +62,20 @@ static void error(char *x)
         while(1);       /* Halt */
 }
 
-/* return decompressed size */
 void
 decompress_kernel(int mmu_on, unsigned char *zimage_data,
                   unsigned int zimage_len, unsigned long heap)
 {
+        unsigned char *input_data = zimage_data;
+        int input_len = zimage_len;
+        unsigned char *output_data;
+
         output_data = (unsigned char *)CONFIG_MEMORY_START + 0x2000
                 + (mmu_on ? 0x80000000 : 0);
         free_mem_ptr = heap;
-        free_mem_end_ptr = free_mem_ptr + HEAP_SIZE;
-        input_data = zimage_data;
-        input_len = zimage_len;
+        free_mem_end_ptr = free_mem_ptr + BOOT_HEAP_SIZE;
 
-        makecrc();
-        puts("Uncompressing Linux... ");
-        gunzip();
-        puts("Ok, booting the kernel.\n");
+        puts("\nDecompressing Linux... ");
+        decompress(input_data, input_len, NULL, NULL, output_data, NULL, error);
+        puts("done.\nBooting the kernel.\n");
 }
diff --git a/arch/m32r/kernel/smp.c b/arch/m32r/kernel/smp.c
index 8a88f1f0a3e2..31cef20b2996 100644
--- a/arch/m32r/kernel/smp.c
+++ b/arch/m32r/kernel/smp.c
@@ -806,7 +806,7 @@ unsigned long send_IPI_mask_phys(cpumask_t physid_mask, int ipi_num,
 
         if (mask & ~physids_coerce(phys_cpu_present_map))
                 BUG();
-        if (ipi_num >= NR_IPIS)
+        if (ipi_num >= NR_IPIS || ipi_num < 0)
                 BUG();
 
         mask <<= IPI_SHIFT;
diff --git a/arch/m32r/kernel/time.c b/arch/m32r/kernel/time.c
index e7fee0f198d5..9cedcef11575 100644
--- a/arch/m32r/kernel/time.c
+++ b/arch/m32r/kernel/time.c
@@ -75,7 +75,7 @@ u32 arch_gettimeoffset(void)
                 count = 0;
 
         count = (latch - count) * TICK_SIZE;
-        elapsed_time = (count + latch / 2) / latch;
+        elapsed_time = DIV_ROUND_CLOSEST(count, latch);
         /* NOTE: LATCH is equal to the "interval" value (= reload count). */
 
 #else /* CONFIG_SMP */
@@ -93,7 +93,7 @@ u32 arch_gettimeoffset(void)
         p_count = count;
 
         count = (latch - count) * TICK_SIZE;
-        elapsed_time = (count + latch / 2) / latch;
+        elapsed_time = DIV_ROUND_CLOSEST(count, latch);
         /* NOTE: LATCH is equal to the "interval" value (= reload count). */
 #endif /* CONFIG_SMP */
 #elif defined(CONFIG_CHIP_M32310)
@@ -211,7 +211,7 @@ void __init time_init(void)
 
                 bus_clock = boot_cpu_data.bus_clock;
                 divide = boot_cpu_data.timer_divide;
-                latch = (bus_clock/divide + HZ / 2) / HZ;
+                latch = DIV_ROUND_CLOSEST(bus_clock/divide, HZ);
 
                 printk("Timer start : latch = %ld\n", latch);
 
diff --git a/arch/m32r/kernel/vmlinux.lds.S b/arch/m32r/kernel/vmlinux.lds.S
index 8ceb6181d805..7da94eaa082b 100644
--- a/arch/m32r/kernel/vmlinux.lds.S
+++ b/arch/m32r/kernel/vmlinux.lds.S
@@ -42,6 +42,8 @@ SECTIONS
   _etext = .;                   /* End of text section */
 
   EXCEPTION_TABLE(16)
+  NOTES
+
   RODATA
   RW_DATA_SECTION(32, PAGE_SIZE, THREAD_SIZE)
   _edata = .;                   /* End of data section */
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 10a0a5488a44..2ba14e77296c 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -414,6 +414,10 @@ config ARCH_SPARSEMEM_DEFAULT
 config ARCH_POPULATES_NODE_MAP
         def_bool y
 
+config SYS_SUPPORTS_HUGETLBFS
+       def_bool y
+       depends on PPC_BOOK3S_64
+
 source "mm/Kconfig"
 
 config ARCH_MEMORY_PROBE
diff --git a/arch/powerpc/kernel/time.c b/arch/powerpc/kernel/time.c
index 92dc844299b6..a136a11c490d 100644
--- a/arch/powerpc/kernel/time.c
+++ b/arch/powerpc/kernel/time.c
@@ -777,7 +777,7 @@ int update_persistent_clock(struct timespec now)
         return ppc_md.set_rtc_time(&tm);
 }
 
-void read_persistent_clock(struct timespec *ts)
+static void __read_persistent_clock(struct timespec *ts)
 {
         struct rtc_time tm;
         static int first = 1;
@@ -800,10 +800,23 @@ void read_persistent_clock(struct timespec *ts)
                 return;
         }
         ppc_md.get_rtc_time(&tm);
+
         ts->tv_sec = mktime(tm.tm_year+1900, tm.tm_mon+1, tm.tm_mday,
                             tm.tm_hour, tm.tm_min, tm.tm_sec);
 }
 
+void read_persistent_clock(struct timespec *ts)
+{
+        __read_persistent_clock(ts);
+
+        /* Sanitize it in case real time clock is set below EPOCH */
+        if (ts->tv_sec < 0) {
+                ts->tv_sec = 0;
+                ts->tv_nsec = 0;
+        }
+                
+}
+
 /* clocksource code */
 static cycle_t rtc_read(struct clocksource *cs)
 {
diff --git a/arch/powerpc/kvm/timing.h b/arch/powerpc/kvm/timing.h
index bb13b1f3cd5a..806ef67868bd 100644
--- a/arch/powerpc/kvm/timing.h
+++ b/arch/powerpc/kvm/timing.h
@@ -48,7 +48,11 @@ static inline void kvmppc_set_exit_type(struct kvm_vcpu *vcpu, int type) {}
 static inline void kvmppc_account_exit_stat(struct kvm_vcpu *vcpu, int type)
 {
         /* type has to be known at build time for optimization */
+
+        /* The BUILD_BUG_ON below breaks in funny ways, commented out
+         * for now ... -BenH
         BUILD_BUG_ON(__builtin_constant_p(type));
+        */
         switch (type) {
         case EXT_INTR_EXITS:
                 vcpu->stat.ext_intr_exits++;
diff --git a/arch/powerpc/mm/mmu_context_nohash.c b/arch/powerpc/mm/mmu_context_nohash.c
index c2f93dc470e6..be4f34c30a0b 100644
--- a/arch/powerpc/mm/mmu_context_nohash.c
+++ b/arch/powerpc/mm/mmu_context_nohash.c
@@ -25,8 +25,8 @@
  *     also clear mm->cpu_vm_mask bits when processes are migrated
  */
 
-#define DEBUG_MAP_CONSISTENCY
-#define DEBUG_CLAMP_LAST_CONTEXT   31
+//#define DEBUG_MAP_CONSISTENCY
+//#define DEBUG_CLAMP_LAST_CONTEXT   31
 //#define DEBUG_HARDER
 
 /* We don't use DEBUG because it tends to be compiled in always nowadays
diff --git a/arch/powerpc/platforms/pseries/msi.c b/arch/powerpc/platforms/pseries/msi.c
index bf2e1ac41308..1164c3430f2c 100644
--- a/arch/powerpc/platforms/pseries/msi.c
+++ b/arch/powerpc/platforms/pseries/msi.c
@@ -432,8 +432,6 @@ static int rtas_setup_msi_irqs(struct pci_dev *pdev, int nvec, int type)
                 /* Read config space back so we can restore after reset */
                 read_msi_msg(virq, &msg);
                 entry->msg = msg;
-
-                unmask_msi_irq(virq);
         }
 
         return 0;
diff --git a/arch/powerpc/platforms/pseries/xics.c b/arch/powerpc/platforms/pseries/xics.c
index 419f8a637ffe..b9bf0eedccf2 100644
--- a/arch/powerpc/platforms/pseries/xics.c
+++ b/arch/powerpc/platforms/pseries/xics.c
@@ -18,6 +18,7 @@
 #include <linux/init.h>
 #include <linux/radix-tree.h>
 #include <linux/cpu.h>
+#include <linux/msi.h>
 #include <linux/of.h>
 
 #include <asm/firmware.h>
@@ -219,6 +220,14 @@ static void xics_unmask_irq(unsigned int virq)
 
 static unsigned int xics_startup(unsigned int virq)
 {
+        /*
+         * The generic MSI code returns with the interrupt disabled on the
+         * card, using the MSI mask bits. Firmware doesn't appear to unmask
+         * at that level, so we do it here by hand.
+         */
+        if (irq_to_desc(virq)->msi_desc)
+                unmask_msi_irq(virq);
+
         /* unmask it */
         xics_unmask_irq(virq);
         return 0;
diff --git a/arch/x86/include/asm/amd_iommu.h b/arch/x86/include/asm/amd_iommu.h
index ac95995b7bad..4b180897e6b5 100644
--- a/arch/x86/include/asm/amd_iommu.h
+++ b/arch/x86/include/asm/amd_iommu.h
@@ -31,6 +31,7 @@ extern irqreturn_t amd_iommu_int_handler(int irq, void *data);
 extern void amd_iommu_flush_all_domains(void);
 extern void amd_iommu_flush_all_devices(void);
 extern void amd_iommu_shutdown(void);
+extern void amd_iommu_apply_erratum_63(u16 devid);
 #else
 static inline int amd_iommu_init(void) { return -ENODEV; }
 static inline void amd_iommu_detect(void) { }
diff --git a/arch/x86/include/asm/desc.h b/arch/x86/include/asm/desc.h
index e8de2f6f5ca5..617bd56b3070 100644
--- a/arch/x86/include/asm/desc.h
+++ b/arch/x86/include/asm/desc.h
@@ -288,7 +288,7 @@ static inline void load_LDT(mm_context_t *pc)
 
 static inline unsigned long get_desc_base(const struct desc_struct *desc)
 {
-        return desc->base0 | ((desc->base1) << 16) | ((desc->base2) << 24);
+        return (unsigned)(desc->base0 | ((desc->base1) << 16) | ((desc->base2) << 24));
 }
 
 static inline void set_desc_base(struct desc_struct *desc, unsigned long base)
diff --git a/arch/x86/include/asm/processor.h b/arch/x86/include/asm/processor.h
index c3429e8b2424..c9786480f0fe 100644
--- a/arch/x86/include/asm/processor.h
+++ b/arch/x86/include/asm/processor.h
@@ -1000,7 +1000,7 @@ extern unsigned long thread_saved_pc(struct task_struct *tsk);
 #define thread_saved_pc(t)      (*(unsigned long *)((t)->thread.sp - 8))
 
 #define task_pt_regs(tsk)       ((struct pt_regs *)(tsk)->thread.sp0 - 1)
-#define KSTK_ESP(tsk)           -1 /* sorry. doesn't work for syscall. */
+extern unsigned long KSTK_ESP(struct task_struct *task);
 #endif /* CONFIG_X86_64 */
 
 extern void start_thread(struct pt_regs *regs, unsigned long new_ip,
diff --git a/arch/x86/include/asm/topology.h b/arch/x86/include/asm/topology.h
index d823c245f63b..40e37b10c6c0 100644
--- a/arch/x86/include/asm/topology.h
+++ b/arch/x86/include/asm/topology.h
@@ -143,7 +143,7 @@ extern unsigned long node_remap_size[];
                                 | 1*SD_BALANCE_FORK                     \
                                 | 0*SD_BALANCE_WAKE                     \
                                 | 1*SD_WAKE_AFFINE                      \
-                                | 1*SD_PREFER_LOCAL                     \
+                                | 0*SD_PREFER_LOCAL                     \
                                 | 0*SD_SHARE_CPUPOWER                   \
                                 | 0*SD_POWERSAVINGS_BALANCE             \
                                 | 0*SD_SHARE_PKG_RESOURCES              \
diff --git a/arch/x86/kernel/amd_iommu.c b/arch/x86/kernel/amd_iommu.c
index 98f230f6a28d..0285521e0a99 100644
--- a/arch/x86/kernel/amd_iommu.c
+++ b/arch/x86/kernel/amd_iommu.c
@@ -1220,6 +1220,8 @@ static void __detach_device(struct protection_domain *domain, u16 devid)
         amd_iommu_dev_table[devid].data[1] = 0;
         amd_iommu_dev_table[devid].data[2] = 0;
 
+        amd_iommu_apply_erratum_63(devid);
+
         /* decrease reference counter */
         domain->dev_cnt -= 1;
 
diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index b4b61d462dcc..c20001e4f556 100644
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -240,7 +240,7 @@ static void iommu_feature_enable(struct amd_iommu *iommu, u8 bit)
         writel(ctrl, iommu->mmio_base + MMIO_CONTROL_OFFSET);
 }
 
-static void __init iommu_feature_disable(struct amd_iommu *iommu, u8 bit)
+static void iommu_feature_disable(struct amd_iommu *iommu, u8 bit)
 {
         u32 ctrl;
 
@@ -519,6 +519,26 @@ static void set_dev_entry_bit(u16 devid, u8 bit)
         amd_iommu_dev_table[devid].data[i] |= (1 << _bit);
 }
 
+static int get_dev_entry_bit(u16 devid, u8 bit)
+{
+        int i = (bit >> 5) & 0x07;
+        int _bit = bit & 0x1f;
+
+        return (amd_iommu_dev_table[devid].data[i] & (1 << _bit)) >> _bit;
+}
+
+
+void amd_iommu_apply_erratum_63(u16 devid)
+{
+        int sysmgt;
+
+        sysmgt = get_dev_entry_bit(devid, DEV_ENTRY_SYSMGT1) |
+                 (get_dev_entry_bit(devid, DEV_ENTRY_SYSMGT2) << 1);
+
+        if (sysmgt == 0x01)
+                set_dev_entry_bit(devid, DEV_ENTRY_IW);
+}
+
 /* Writes the specific IOMMU for a device into the rlookup table */
 static void __init set_iommu_for_device(struct amd_iommu *iommu, u16 devid)
 {
@@ -547,6 +567,8 @@ static void __init set_dev_entry_from_acpi(struct amd_iommu *iommu,
         if (flags & ACPI_DEVFLAG_LINT1)
                 set_dev_entry_bit(devid, DEV_ENTRY_LINT1_PASS);
 
+        amd_iommu_apply_erratum_63(devid);
+
         set_iommu_for_device(iommu, devid);
 }
 
diff --git a/arch/x86/kernel/cpu/mtrr/cleanup.c b/arch/x86/kernel/cpu/mtrr/cleanup.c
index 315738c74aad..73c86db5acbe 100644
--- a/arch/x86/kernel/cpu/mtrr/cleanup.c
+++ b/arch/x86/kernel/cpu/mtrr/cleanup.c
@@ -846,7 +846,7 @@ int __init mtrr_cleanup(unsigned address_bits)
         sort(range, nr_range, sizeof(struct res_range), cmp_range, NULL);
 
         range_sums = sum_ranges(range, nr_range);
-        printk(KERN_INFO "total RAM coverred: %ldM\n",
+        printk(KERN_INFO "total RAM covered: %ldM\n",
                range_sums >> (20 - PAGE_SHIFT));
 
         if (mtrr_chunk_size && mtrr_gran_size) {
diff --git a/arch/x86/kernel/process_64.c b/arch/x86/kernel/process_64.c
index ad535b683170..eb62cbcaa490 100644
--- a/arch/x86/kernel/process_64.c
+++ b/arch/x86/kernel/process_64.c
@@ -664,3 +664,8 @@ long sys_arch_prctl(int code, unsigned long addr)
         return do_arch_prctl(current, code, addr);
 }
 
+unsigned long KSTK_ESP(struct task_struct *task)
+{
+        return (test_tsk_thread_flag(task, TIF_IA32)) ?
+                        (task_pt_regs(task)->sp) : ((task)->thread.usersp);
+}
diff --git a/arch/x86/kernel/reboot.c b/arch/x86/kernel/reboot.c
index a1a3cdda06e1..f93078746e00 100644
--- a/arch/x86/kernel/reboot.c
+++ b/arch/x86/kernel/reboot.c
@@ -436,6 +436,14 @@ static struct dmi_system_id __initdata pci_reboot_dmi_table[] = {
                         DMI_MATCH(DMI_PRODUCT_NAME, "MacBookPro5"),
                 },
         },
+        {       /* Handle problems with rebooting on Apple Macmini3,1 */
+                .callback = set_pci_reboot,
+                .ident = "Apple Macmini3,1",
+                .matches = {
+                        DMI_MATCH(DMI_SYS_VENDOR, "Apple Inc."),
+                        DMI_MATCH(DMI_PRODUCT_NAME, "Macmini3,1"),
+                },
+        },
         { }
 };
 
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 9b9695322f56..ae07d261527c 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -1692,7 +1692,7 @@ static int kvm_vcpu_ioctl_x86_setup_mce(struct kvm_vcpu *vcpu,
         unsigned bank_num = mcg_cap & 0xff, bank;
 
         r = -EINVAL;
-        if (!bank_num)
+        if (!bank_num || bank_num >= KVM_MAX_MCE_BANKS)
                 goto out;
         if (mcg_cap & ~(KVM_MCE_CAP_SUPPORTED | 0xff | 0xff0000))
                 goto out;
@@ -4051,7 +4051,7 @@ static int save_guest_segment_descriptor(struct kvm_vcpu *vcpu, u16 selector,
         return kvm_write_guest_virt(dtable.base + index*8, seg_desc, sizeof(*seg_desc), vcpu);
 }
 
-static u32 get_tss_base_addr(struct kvm_vcpu *vcpu,
+static gpa_t get_tss_base_addr(struct kvm_vcpu *vcpu,
                              struct desc_struct *seg_desc)
 {
         u32 base_addr = get_desc_base(seg_desc);
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 23a4d80fb39e..dfbf70e65860 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -178,6 +178,7 @@ static __read_mostly unsigned int cpuid_leaf1_ecx_mask = ~0;
 static void xen_cpuid(unsigned int *ax, unsigned int *bx,
                       unsigned int *cx, unsigned int *dx)
 {
+        unsigned maskebx = ~0;
         unsigned maskecx = ~0;
         unsigned maskedx = ~0;
 
@@ -185,9 +186,16 @@ static void xen_cpuid(unsigned int *ax, unsigned int *bx,
          * Mask out inconvenient features, to try and disable as many
          * unsupported kernel subsystems as possible.
          */
-        if (*ax == 1) {
+        switch (*ax) {
+        case 1:
                 maskecx = cpuid_leaf1_ecx_mask;
                 maskedx = cpuid_leaf1_edx_mask;
+                break;
+
+        case 0xb:
+                /* Suppress extended topology stuff */
+                maskebx = 0;
+                break;
         }
 
         asm(XEN_EMULATE_PREFIX "cpuid"
@@ -197,6 +205,7 @@ static void xen_cpuid(unsigned int *ax, unsigned int *bx,
                   "=d" (*dx)
                 : "0" (*ax), "2" (*cx));
 
+        *bx &= maskebx;
         *cx &= maskecx;
         *dx &= maskedx;
 }
diff --git a/drivers/char/hvc_xen.c b/drivers/char/hvc_xen.c
index eba999f8598d..a6ee32b599a8 100644
--- a/drivers/char/hvc_xen.c
+++ b/drivers/char/hvc_xen.c
@@ -55,7 +55,7 @@ static inline void notify_daemon(void)
         notify_remote_via_evtchn(xen_start_info->console.domU.evtchn);
 }
 
-static int write_console(uint32_t vtermno, const char *data, int len)
+static int __write_console(const char *data, int len)
 {
         struct xencons_interface *intf = xencons_interface();
         XENCONS_RING_IDX cons, prod;
@@ -76,6 +76,29 @@ static int write_console(uint32_t vtermno, const char *data, int len)
         return sent;
 }
 
+static int write_console(uint32_t vtermno, const char *data, int len)
+{
+        int ret = len;
+
+        /*
+         * Make sure the whole buffer is emitted, polling if
+         * necessary.  We don't ever want to rely on the hvc daemon
+         * because the most interesting console output is when the
+         * kernel is crippled.
+         */
+        while (len) {
+                int sent = __write_console(data, len);
+                
+                data += sent;
+                len -= sent;
+
+                if (unlikely(len))
+                        HYPERVISOR_sched_op(SCHEDOP_yield, NULL);
+        }
+
+        return ret;
+}
+
 static int read_console(uint32_t vtermno, char *buf, int len)
 {
         struct xencons_interface *intf = xencons_interface();
diff --git a/drivers/edac/amd64_edac.c b/drivers/edac/amd64_edac.c
index d4560d9d5a83..a38831c82649 100644
--- a/drivers/edac/amd64_edac.c
+++ b/drivers/edac/amd64_edac.c
@@ -2254,7 +2254,7 @@ static inline void __amd64_decode_bus_error(struct mem_ctl_info *mci,
 {
         u32 ec  = ERROR_CODE(info->nbsl);
         u32 xec = EXT_ERROR_CODE(info->nbsl);
-        int ecc_type = info->nbsh & (0x3 << 13);
+        int ecc_type = (info->nbsh >> 13) & 0x3;
 
         /* Bail early out if this was an 'observed' error */
         if (PP(ec) == K8_NBSL_PP_OBS)
@@ -3163,7 +3163,7 @@ static int __init amd64_edac_init(void)
         opstate_init();
 
         if (cache_k8_northbridges() < 0)
-                goto err_exit;
+                return err;
 
         err = pci_register_driver(&amd64_pci_driver);
         if (err)
@@ -3189,8 +3189,6 @@ static int __init amd64_edac_init(void)
 
 err_2nd_stage:
         debugf0("2nd stage failed\n");
-
-err_exit:
         pci_unregister_driver(&amd64_pci_driver);
 
         return err;
diff --git a/drivers/misc/sgi-gru/gruprocfs.c b/drivers/misc/sgi-gru/gruprocfs.c
index ccd4408a26c7..3f2375c5ba5b 100644
--- a/drivers/misc/sgi-gru/gruprocfs.c
+++ b/drivers/misc/sgi-gru/gruprocfs.c
@@ -161,14 +161,15 @@ static int options_show(struct seq_file *s, void *p)
 static ssize_t options_write(struct file *file, const char __user *userbuf,
                              size_t count, loff_t *data)
 {
-        unsigned long val;
-        char buf[80];
+        char buf[20];
 
-        if (strncpy_from_user(buf, userbuf, sizeof(buf) - 1) < 0)
+        if (count >= sizeof(buf))
+                return -EINVAL;
+        if (copy_from_user(buf, userbuf, count))
                 return -EFAULT;
-        buf[count - 1] = '\0';
-        if (!strict_strtoul(buf, 10, &val))
-                gru_options = val;
+        buf[count] = '\0';
+        if (strict_strtoul(buf, 0, &gru_options))
+                return -EINVAL;
 
         return count;
 }
diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
index 841e085ab74a..14be0755d7cd 100644
--- a/drivers/mtd/maps/Kconfig
+++ b/drivers/mtd/maps/Kconfig
@@ -486,6 +486,7 @@ config MTD_BFIN_ASYNC
 
 config MTD_GPIO_ADDR
         tristate "GPIO-assisted Flash Chip Support"
+        depends on GENERIC_GPIO || GPIOLIB
         depends on MTD_COMPLEX_MAPPINGS
         select MTD_PARTITIONS
         help
diff --git a/drivers/mtd/maps/gpio-addr-flash.c b/drivers/mtd/maps/gpio-addr-flash.c
index 44ef9a49a860..1ad5caf9fe69 100644
--- a/drivers/mtd/maps/gpio-addr-flash.c
+++ b/drivers/mtd/maps/gpio-addr-flash.c
@@ -13,7 +13,9 @@
  * Licensed under the GPL-2 or later.
  */
 
+#include <linux/gpio.h>
 #include <linux/init.h>
+#include <linux/io.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/mtd/mtd.h>
@@ -23,9 +25,6 @@
 #include <linux/platform_device.h>
 #include <linux/types.h>
 
-#include <asm/gpio.h>
-#include <asm/io.h>
-
 #define pr_devinit(fmt, args...) ({ static const __devinitconst char __fmt[] = fmt; printk(__fmt, ## args); })
 
 #define DRIVER_NAME "gpio-addr-flash"
diff --git a/drivers/mtd/nand/nand_base.c b/drivers/mtd/nand/nand_base.c
index 22113865438b..2957cc70da3d 100644
--- a/drivers/mtd/nand/nand_base.c
+++ b/drivers/mtd/nand/nand_base.c
@@ -761,6 +761,7 @@ static int nand_wait(struct mtd_info *mtd, struct nand_chip *chip)
  * @mtd:        mtd info structure
  * @chip:       nand chip info structure
  * @buf:        buffer to store read data
+ * @page:       page number to read
  *
  * Not for syndrome calculating ecc controllers, which use a special oob layout
  */
@@ -777,6 +778,7 @@ static int nand_read_page_raw(struct mtd_info *mtd, struct nand_chip *chip,
  * @mtd:        mtd info structure
  * @chip:       nand chip info structure
  * @buf:        buffer to store read data
+ * @page:       page number to read
  *
  * We need a special oob layout and handling even when OOB isn't used.
  */
@@ -818,6 +820,7 @@ static int nand_read_page_raw_syndrome(struct mtd_info *mtd, struct nand_chip *c
  * @mtd:        mtd info structure
  * @chip:       nand chip info structure
  * @buf:        buffer to store read data
+ * @page:       page number to read
  */
 static int nand_read_page_swecc(struct mtd_info *mtd, struct nand_chip *chip,
                                 uint8_t *buf, int page)
@@ -939,6 +942,7 @@ static int nand_read_subpage(struct mtd_info *mtd, struct nand_chip *chip, uint3
  * @mtd:        mtd info structure
  * @chip:       nand chip info structure
  * @buf:        buffer to store read data
+ * @page:       page number to read
  *
  * Not for syndrome calculating ecc controllers which need a special oob layout
  */
@@ -983,6 +987,7 @@ static int nand_read_page_hwecc(struct mtd_info *mtd, struct nand_chip *chip,
  * @mtd:        mtd info structure
  * @chip:       nand chip info structure
  * @buf:        buffer to store read data
+ * @page:       page number to read
  *
  * Hardware ECC for large page chips, require OOB to be read first.
  * For this ECC mode, the write_page method is re-used from ECC_HW.
@@ -1031,6 +1036,7 @@ static int nand_read_page_hwecc_oob_first(struct mtd_info *mtd,
  * @mtd:        mtd info structure
  * @chip:       nand chip info structure
  * @buf:        buffer to store read data
+ * @page:       page number to read
  *
  * The hw generator calculates the error syndrome automatically. Therefor
  * we need a special oob layout and handling.
diff --git a/fs/Kconfig b/fs/Kconfig
index 2126078a38ed..64d44efad7a5 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -135,7 +135,7 @@ config TMPFS_POSIX_ACL
 
 config HUGETLBFS
         bool "HugeTLB file system support"
-        depends on X86 || IA64 || PPC_BOOK3S_64 || SPARC64 || (S390 && 64BIT) || \
+        depends on X86 || IA64 || SPARC64 || (S390 && 64BIT) || \
                    SYS_SUPPORTS_HUGETLBFS || BROKEN
         help
           hugetlbfs is a filesystem backing for HugeTLB pages, based on
diff --git a/fs/compat.c b/fs/compat.c
index d576b552e8e2..6c19040ffeef 100644
--- a/fs/compat.c
+++ b/fs/compat.c
@@ -1532,6 +1532,8 @@ int compat_do_execve(char * filename,
         if (retval < 0)
                 goto out;
 
+        current->stack_start = current->mm->start_stack;
+
         /* execve succeeded */
         current->fs->in_exec = 0;
         current->in_execve = 0;
diff --git a/fs/fuse/dir.c b/fs/fuse/dir.c
index 992f6c9410bb..8ada78aade58 100644
--- a/fs/fuse/dir.c
+++ b/fs/fuse/dir.c
@@ -712,8 +712,10 @@ static int fuse_rename(struct inode *olddir, struct dentry *oldent,
                         fuse_invalidate_attr(newdir);
 
                 /* newent will end up negative */
-                if (newent->d_inode)
+                if (newent->d_inode) {
+                        fuse_invalidate_attr(newent->d_inode);
                         fuse_invalidate_entry_cache(newent);
+                }
         } else if (err == -EINTR) {
                 /* If request was interrupted, DEITY only knows if the
                    rename actually took place.  If the invalidation
diff --git a/fs/fuse/file.c b/fs/fuse/file.c
index a3492f7d207c..c18913a777ae 100644
--- a/fs/fuse/file.c
+++ b/fs/fuse/file.c
@@ -1063,7 +1063,8 @@ ssize_t fuse_direct_io(struct file *file, const char __user *buf,
                                 break;
                 }
         }
-        fuse_put_request(fc, req);
+        if (!IS_ERR(req))
+                fuse_put_request(fc, req);
         if (res > 0)
                 *ppos = pos;
 
@@ -1599,7 +1600,7 @@ static int fuse_ioctl_copy_user(struct page **pages, struct iovec *iov,
                         kaddr += copy;
                 }
 
-                kunmap(map);
+                kunmap(page);
         }
 
         return 0;
diff --git a/fs/sysfs/dir.c b/fs/sysfs/dir.c
index 5fad489ce5bc..e0201837d244 100644
--- a/fs/sysfs/dir.c
+++ b/fs/sysfs/dir.c
@@ -21,6 +21,7 @@
 #include <linux/completion.h>
 #include <linux/mutex.h>
 #include <linux/slab.h>
+#include <linux/security.h>
 #include "sysfs.h"
 
 DEFINE_MUTEX(sysfs_mutex);
@@ -285,6 +286,9 @@ void release_sysfs_dirent(struct sysfs_dirent * sd)
                 sysfs_put(sd->s_symlink.target_sd);
         if (sysfs_type(sd) & SYSFS_COPY_NAME)
                 kfree(sd->s_name);
+        if (sd->s_iattr && sd->s_iattr->ia_secdata)
+                security_release_secctx(sd->s_iattr->ia_secdata,
+                                        sd->s_iattr->ia_secdata_len);
         kfree(sd->s_iattr);
         sysfs_free_ino(sd->s_ino);
         kmem_cache_free(sysfs_dir_cachep, sd);
diff --git a/kernel/kthread.c b/kernel/kthread.c
index 5fe709982caa..ab7ae57773e1 100644
--- a/kernel/kthread.c
+++ b/kernel/kthread.c
@@ -150,29 +150,6 @@ struct task_struct *kthread_create(int (*threadfn)(void *data),
 EXPORT_SYMBOL(kthread_create);
 
 /**
- * kthread_bind - bind a just-created kthread to a cpu.
- * @k: thread created by kthread_create().
- * @cpu: cpu (might not be online, must be possible) for @k to run on.
- *
- * Description: This function is equivalent to set_cpus_allowed(),
- * except that @cpu doesn't need to be online, and the thread must be
- * stopped (i.e., just returned from kthread_create()).
- */
-void kthread_bind(struct task_struct *k, unsigned int cpu)
-{
-        /* Must have done schedule() in kthread() before we set_task_cpu */
-        if (!wait_task_inactive(k, TASK_UNINTERRUPTIBLE)) {
-                WARN_ON(1);
-                return;
-        }
-        set_task_cpu(k, cpu);
-        k->cpus_allowed = cpumask_of_cpu(cpu);
-        k->rt.nr_cpus_allowed = 1;
-        k->flags |= PF_THREAD_BOUND;
-}
-EXPORT_SYMBOL(kthread_bind);
-
-/**
  * kthread_stop - stop a thread created by kthread_create().
  * @k: thread created by kthread_create().
  *
diff --git a/kernel/sched.c b/kernel/sched.c
index a455dca884a6..28dd4f490bfc 100644
--- a/kernel/sched.c
+++ b/kernel/sched.c
@@ -1992,6 +1992,38 @@ static inline void check_class_changed(struct rq *rq, struct task_struct *p,
                 p->sched_class->prio_changed(rq, p, oldprio, running);
 }
 
+/**
+ * kthread_bind - bind a just-created kthread to a cpu.
+ * @k: thread created by kthread_create().
+ * @cpu: cpu (might not be online, must be possible) for @k to run on.
+ *
+ * Description: This function is equivalent to set_cpus_allowed(),
+ * except that @cpu doesn't need to be online, and the thread must be
+ * stopped (i.e., just returned from kthread_create()).
+ *
+ * Function lives here instead of kthread.c because it messes with
+ * scheduler internals which require locking.
+ */
+void kthread_bind(struct task_struct *p, unsigned int cpu)
+{
+        struct rq *rq = cpu_rq(cpu);
+        unsigned long flags;
+
+        /* Must have done schedule() in kthread() before we set_task_cpu */
+        if (!wait_task_inactive(p, TASK_UNINTERRUPTIBLE)) {
+                WARN_ON(1);
+                return;
+        }
+
+        spin_lock_irqsave(&rq->lock, flags);
+        set_task_cpu(p, cpu);
+        p->cpus_allowed = cpumask_of_cpu(cpu);
+        p->rt.nr_cpus_allowed = 1;
+        p->flags |= PF_THREAD_BOUND;
+        spin_unlock_irqrestore(&rq->lock, flags);
+}
+EXPORT_SYMBOL(kthread_bind);
+
 #ifdef CONFIG_SMP
 /*
  * Is this task likely cache-hot:
@@ -2004,7 +2036,7 @@ task_hot(struct task_struct *p, u64 now, struct sched_domain *sd)
         /*
          * Buddy candidates are cache hot:
          */
-        if (sched_feat(CACHE_HOT_BUDDY) &&
+        if (sched_feat(CACHE_HOT_BUDDY) && this_rq()->nr_running &&
                         (&p->se == cfs_rq_of(&p->se)->next ||
                          &p->se == cfs_rq_of(&p->se)->last))
                 return 1;
@@ -9532,13 +9564,13 @@ void __init sched_init(void)
         current->sched_class = &fair_sched_class;
 
         /* Allocate the nohz_cpu_mask if CONFIG_CPUMASK_OFFSTACK */
-        alloc_cpumask_var(&nohz_cpu_mask, GFP_NOWAIT);
+        zalloc_cpumask_var(&nohz_cpu_mask, GFP_NOWAIT);
 #ifdef CONFIG_SMP
 #ifdef CONFIG_NO_HZ
-        alloc_cpumask_var(&nohz.cpu_mask, GFP_NOWAIT);
+        zalloc_cpumask_var(&nohz.cpu_mask, GFP_NOWAIT);
         alloc_cpumask_var(&nohz.ilb_grp_nohz_mask, GFP_NOWAIT);
 #endif
-        alloc_cpumask_var(&cpu_isolated_map, GFP_NOWAIT);
+        zalloc_cpumask_var(&cpu_isolated_map, GFP_NOWAIT);
 #endif /* SMP */
 
         perf_event_init();
diff --git a/kernel/sched_fair.c b/kernel/sched_fair.c
index c32c3e643daa..37087a7fac22 100644
--- a/kernel/sched_fair.c
+++ b/kernel/sched_fair.c
@@ -822,6 +822,26 @@ check_preempt_tick(struct cfs_rq *cfs_rq, struct sched_entity *curr)
                  * re-elected due to buddy favours.
                  */
                 clear_buddies(cfs_rq, curr);
+                return;
+        }
+
+        /*
+         * Ensure that a task that missed wakeup preemption by a
+         * narrow margin doesn't have to wait for a full slice.
+         * This also mitigates buddy induced latencies under load.
+         */
+        if (!sched_feat(WAKEUP_PREEMPT))
+                return;
+
+        if (delta_exec < sysctl_sched_min_granularity)
+                return;
+
+        if (cfs_rq->nr_running > 1) {
+                struct sched_entity *se = __pick_next_entity(cfs_rq);
+                s64 delta = curr->vruntime - se->vruntime;
+
+                if (delta > ideal_runtime)
+                        resched_task(rq_of(cfs_rq)->curr);
         }
 }
 
@@ -861,21 +881,18 @@ wakeup_preempt_entity(struct sched_entity *curr, struct sched_entity *se);
 static struct sched_entity *pick_next_entity(struct cfs_rq *cfs_rq)
 {
         struct sched_entity *se = __pick_next_entity(cfs_rq);
-        struct sched_entity *buddy;
+        struct sched_entity *left = se;
 
-        if (cfs_rq->next) {
-                buddy = cfs_rq->next;
-                cfs_rq->next = NULL;
-                if (wakeup_preempt_entity(buddy, se) < 1)
-                        return buddy;
-        }
+        if (cfs_rq->next && wakeup_preempt_entity(cfs_rq->next, left) < 1)
+                se = cfs_rq->next;
 
-        if (cfs_rq->last) {
-                buddy = cfs_rq->last;
-                cfs_rq->last = NULL;
-                if (wakeup_preempt_entity(buddy, se) < 1)
-                        return buddy;
-        }
+        /*
+         * Prefer last buddy, try to return the CPU to a preempted task.
+         */
+        if (cfs_rq->last && wakeup_preempt_entity(cfs_rq->last, left) < 1)
+                se = cfs_rq->last;
+
+        clear_buddies(cfs_rq, se);
 
         return se;
 }
@@ -1577,6 +1594,7 @@ static void check_preempt_wakeup(struct rq *rq, struct task_struct *p, int wake_
         struct sched_entity *se = &curr->se, *pse = &p->se;
         struct cfs_rq *cfs_rq = task_cfs_rq(curr);
         int sync = wake_flags & WF_SYNC;
+        int scale = cfs_rq->nr_running >= sched_nr_latency;
 
         update_curr(cfs_rq);
 
@@ -1591,18 +1609,7 @@ static void check_preempt_wakeup(struct rq *rq, struct task_struct *p, int wake_
         if (unlikely(se == pse))
                 return;
 
-        /*
-         * Only set the backward buddy when the current task is still on the
-         * rq. This can happen when a wakeup gets interleaved with schedule on
-         * the ->pre_schedule() or idle_balance() point, either of which can
-         * drop the rq lock.
-         *
-         * Also, during early boot the idle thread is in the fair class, for
-         * obvious reasons its a bad idea to schedule back to the idle thread.
-         */
-        if (sched_feat(LAST_BUDDY) && likely(se->on_rq && curr != rq->idle))
-                set_last_buddy(se);
-        if (sched_feat(NEXT_BUDDY) && !(wake_flags & WF_FORK))
+        if (sched_feat(NEXT_BUDDY) && scale && !(wake_flags & WF_FORK))
                 set_next_buddy(pse);
 
         /*
@@ -1648,8 +1655,22 @@ static void check_preempt_wakeup(struct rq *rq, struct task_struct *p, int wake_
 
         BUG_ON(!pse);
 
-        if (wakeup_preempt_entity(se, pse) == 1)
+        if (wakeup_preempt_entity(se, pse) == 1) {
                 resched_task(curr);
+                /*
+                 * Only set the backward buddy when the current task is still
+                 * on the rq. This can happen when a wakeup gets interleaved
+                 * with schedule on the ->pre_schedule() or idle_balance()
+                 * point, either of which can * drop the rq lock.
+                 *
+                 * Also, during early boot the idle thread is in the fair class,
+                 * for obvious reasons its a bad idea to schedule back to it.
+                 */
+                if (unlikely(!se->on_rq || curr == rq->idle))
+                        return;
+                if (sched_feat(LAST_BUDDY) && scale && entity_is_task(se))
+                        set_last_buddy(se);
+        }
 }
 
 static struct task_struct *pick_next_task_fair(struct rq *rq)
diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c
index 9c451a1930b6..6dc4e5ef7a01 100644
--- a/kernel/trace/ftrace.c
+++ b/kernel/trace/ftrace.c
@@ -2222,15 +2222,15 @@ ftrace_regex_write(struct file *file, const char __user *ubuf,
                 ret = ftrace_process_regex(parser->buffer,
                                            parser->idx, enable);
                 if (ret)
-                        goto out;
+                        goto out_unlock;
 
                 trace_parser_clear(parser);
         }
 
         ret = read;
-
+out_unlock:
         mutex_unlock(&ftrace_regex_lock);
-out:
+
         return ret;
 }
 
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 3ffa502fb243..5dd017fea6f5 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -1193,6 +1193,7 @@ rb_remove_pages(struct ring_buffer_per_cpu *cpu_buffer, unsigned nr_pages)
         atomic_inc(&cpu_buffer->record_disabled);
         synchronize_sched();
 
+        spin_lock_irq(&cpu_buffer->reader_lock);
         rb_head_page_deactivate(cpu_buffer);
 
         for (i = 0; i < nr_pages; i++) {
@@ -1207,6 +1208,7 @@ rb_remove_pages(struct ring_buffer_per_cpu *cpu_buffer, unsigned nr_pages)
                 return;
 
         rb_reset_cpu(cpu_buffer);
+        spin_unlock_irq(&cpu_buffer->reader_lock);
 
         rb_check_pages(cpu_buffer);
 
diff --git a/lib/dma-debug.c b/lib/dma-debug.c
index 58a9f9fc609a..ce6b7eabf674 100644
--- a/lib/dma-debug.c
+++ b/lib/dma-debug.c
@@ -819,9 +819,11 @@ static void check_unmap(struct dma_debug_entry *ref)
                 err_printk(ref->dev, entry, "DMA-API: device driver frees "
                            "DMA memory with different CPU address "
                            "[device address=0x%016llx] [size=%llu bytes] "
-                           "[cpu alloc address=%p] [cpu free address=%p]",
+                           "[cpu alloc address=0x%016llx] "
+                           "[cpu free address=0x%016llx]",
                            ref->dev_addr, ref->size,
-                           (void *)entry->paddr, (void *)ref->paddr);
+                           (unsigned long long)entry->paddr,
+                           (unsigned long long)ref->paddr);
         }
 
         if (ref->sg_call_ents && ref->type == dma_debug_sg &&