Re: Linux 4.9.285

6 Oct 2021

diff --git a/Makefile b/Makefile
index 9605f840f94b..2ed953d8e0f2 100644
--- a/Makefile
+++ b/Makefile
@@ -1,6 +1,6 @@
 VERSION = 4
 PATCHLEVEL = 9
-SUBLEVEL = 284
+SUBLEVEL = 285
 EXTRAVERSION =
 NAME = Roaring Lionus

diff --git a/arch/alpha/include/asm/io.h b/arch/alpha/include/asm/io.h
index 355aec0867f4..e55a5e6ab460 100644
--- a/arch/alpha/include/asm/io.h
+++ b/arch/alpha/include/asm/io.h
@@ -60,7 +60,7 @@ extern inline void set_hae(unsigned long new_hae)
  * Change virtual addresses to physical addresses and vv.
  */
 #ifdef USE_48_BIT_KSEG
-static inline unsigned long virt_to_phys(void *address)
+static inline unsigned long virt_to_phys(volatile void *address)
 {
    return (unsigned long)address - IDENT_ADDR;
 }
@@ -70,7 +70,7 @@ static inline void * phys_to_virt(unsigned long address)
    return (void *) (address + IDENT_ADDR);
 }
 #else
-static inline unsigned long virt_to_phys(void *address)
+static inline unsigned long virt_to_phys(volatile void *address)
 {
         unsigned long phys = (unsigned long)address;
@@ -111,7 +111,7 @@ static inline dma_addr_t __deprecated isa_page_to_bus(struct page *page)
 extern unsigned long __direct_map_base;
 extern unsigned long __direct_map_size;
-static inline unsigned long __deprecated virt_to_bus(void *address)
+static inline unsigned long __deprecated virt_to_bus(volatile void *address)
 {
    unsigned long phys = virt_to_phys(address);
    unsigned long bus = phys + __direct_map_base;
diff --git a/arch/arm/include/asm/ftrace.h b/arch/arm/include/asm/ftrace.h
index 22b73112b75f..1c30be0f5dd0 100644
--- a/arch/arm/include/asm/ftrace.h
+++ b/arch/arm/include/asm/ftrace.h
@@ -14,6 +14,9 @@ struct dyn_arch_ftrace {
 #ifdef CONFIG_OLD_MCOUNT
    bool	old_mcount;
 #endif
+#ifdef CONFIG_ARM_MODULE_PLTS
+	struct module *mod;
+#endif
 };
static inline unsigned long ftrace_call_adjust(unsigned long addr)
diff --git a/arch/arm/include/asm/insn.h b/arch/arm/include/asm/insn.h
index e96065da4dae..0043bf609f27 100644
--- a/arch/arm/include/asm/insn.h
+++ b/arch/arm/include/asm/insn.h
@@ -12,18 +12,18 @@ arm_gen_nop(void)
 }
unsigned long
-__arm_gen_branch(unsigned long pc, unsigned long addr, bool link);
+__arm_gen_branch(unsigned long pc, unsigned long addr, bool link, bool warn);
static inline unsigned long
 arm_gen_branch(unsigned long pc, unsigned long addr)
 {
-	return __arm_gen_branch(pc, addr, false);
+	return __arm_gen_branch(pc, addr, false, true);
 }
static inline unsigned long
-arm_gen_branch_link(unsigned long pc, unsigned long addr)
+arm_gen_branch_link(unsigned long pc, unsigned long addr, bool warn)
 {
-	return __arm_gen_branch(pc, addr, true);
+	return __arm_gen_branch(pc, addr, true, warn);
 }
#endif
diff --git a/arch/arm/include/asm/module.h b/arch/arm/include/asm/module.h
index ed2319663a1e..3cfbe8181224 100644
--- a/arch/arm/include/asm/module.h
+++ b/arch/arm/include/asm/module.h
@@ -18,8 +18,18 @@ enum {
 };
 #endif
+#define PLT_ENT_STRIDE		L1_CACHE_BYTES
+#define PLT_ENT_COUNT		(PLT_ENT_STRIDE / sizeof(u32))
+#define PLT_ENT_SIZE		(sizeof(struct plt_entries) / PLT_ENT_COUNT)
+
+struct plt_entries {
+	u32	ldr[PLT_ENT_COUNT];
+	u32	lit[PLT_ENT_COUNT];
+};
+
 struct mod_plt_sec {
    struct elf32_shdr	*plt;
+	struct plt_entries	*plt_ent;
    int			plt_count;
 };
diff --git a/arch/arm/kernel/ftrace.c b/arch/arm/kernel/ftrace.c
index 414e60ed0257..b1cf37fec354 100644
--- a/arch/arm/kernel/ftrace.c
+++ b/arch/arm/kernel/ftrace.c
@@ -95,9 +95,10 @@ int ftrace_arch_code_modify_post_process(void)
    return 0;
 }
-static unsigned long ftrace_call_replace(unsigned long pc, unsigned long addr)
+static unsigned long ftrace_call_replace(unsigned long pc, unsigned long addr,
+					 bool warn)
 {
-	return arm_gen_branch_link(pc, addr);
+	return arm_gen_branch_link(pc, addr, warn);
 }
static int ftrace_modify_code(unsigned long pc, unsigned long old,
@@ -136,14 +137,14 @@ int ftrace_update_ftrace_func(ftrace_func_t func)
    int ret;
pc = (unsigned long)&ftrace_call;
-	new = ftrace_call_replace(pc, (unsigned long)func);
+	new = ftrace_call_replace(pc, (unsigned long)func, true);
ret = ftrace_modify_code(pc, 0, new, false);
#ifdef CONFIG_OLD_MCOUNT
    if (!ret) {
    	pc = (unsigned long)&ftrace_call_old;
-		new = ftrace_call_replace(pc, (unsigned long)func);
+		new = ftrace_call_replace(pc, (unsigned long)func, true);
ret = ftrace_modify_code(pc, 0, new, false);
    }
@@ -156,9 +157,21 @@ int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
 {
    unsigned long new, old;
    unsigned long ip = rec->ip;
+	unsigned long aaddr = adjust_address(rec, addr);
+	struct module *mod = NULL;
+
+#ifdef CONFIG_ARM_MODULE_PLTS
+	mod = rec->arch.mod;
+#endif
old = ftrace_nop_replace(rec);
-	new = ftrace_call_replace(ip, adjust_address(rec, addr));
+	new = ftrace_call_replace(ip, aaddr, !mod);
+#ifdef CONFIG_ARM_MODULE_PLTS
+	if (!new && mod) {
+		aaddr = get_module_plt(mod, ip, aaddr);
+		new = ftrace_call_replace(ip, aaddr, true);
+	}
+#endif
return ftrace_modify_code(rec->ip, old, new, true);
 }
@@ -166,12 +179,29 @@ int ftrace_make_call(struct dyn_ftrace *rec, unsigned long addr)
 int ftrace_make_nop(struct module *mod,
    	    struct dyn_ftrace *rec, unsigned long addr)
 {
+	unsigned long aaddr = adjust_address(rec, addr);
    unsigned long ip = rec->ip;
    unsigned long old;
    unsigned long new;
    int ret;
-	old = ftrace_call_replace(ip, adjust_address(rec, addr));
+#ifdef CONFIG_ARM_MODULE_PLTS
+	/* mod is only supplied during module loading */
+	if (!mod)
+		mod = rec->arch.mod;
+	else
+		rec->arch.mod = mod;
+#endif
+
+	old = ftrace_call_replace(ip, aaddr,
+				  !IS_ENABLED(CONFIG_ARM_MODULE_PLTS) || !mod);
+#ifdef CONFIG_ARM_MODULE_PLTS
+	if (!old && mod) {
+		aaddr = get_module_plt(mod, ip, aaddr);
+		old = ftrace_call_replace(ip, aaddr, true);
+	}
+#endif
+
    new = ftrace_nop_replace(rec);
    ret = ftrace_modify_code(ip, old, new, true);
@@ -179,7 +209,8 @@ int ftrace_make_nop(struct module *mod,
    if (ret == -EINVAL && addr == MCOUNT_ADDR) {
    	rec->arch.old_mcount = true;
-		old = ftrace_call_replace(ip, adjust_address(rec, addr));
+		old = ftrace_call_replace(ip, adjust_address(rec, addr),
+					  !IS_ENABLED(CONFIG_ARM_MODULE_PLTS) || !mod);
    	new = ftrace_nop_replace(rec);
    	ret = ftrace_modify_code(ip, old, new, true);
    }
diff --git a/arch/arm/kernel/insn.c b/arch/arm/kernel/insn.c
index b760340b7014..eaded01b7edf 100644
--- a/arch/arm/kernel/insn.c
+++ b/arch/arm/kernel/insn.c
@@ -2,8 +2,9 @@
 #include <linux/kernel.h>
 #include <asm/opcodes.h>
-static unsigned long
-__arm_gen_branch_thumb2(unsigned long pc, unsigned long addr, bool link)
+static unsigned long __arm_gen_branch_thumb2(unsigned long pc,
+					     unsigned long addr, bool link,
+					     bool warn)
 {
    unsigned long s, j1, j2, i1, i2, imm10, imm11;
    unsigned long first, second;
@@ -11,7 +12,7 @@ __arm_gen_branch_thumb2(unsigned long pc, unsigned long addr, bool link)
offset = (long)addr - (long)(pc + 4);
    if (offset < -16777216 || offset > 16777214) {
-		WARN_ON_ONCE(1);
+		WARN_ON_ONCE(warn);
    	return 0;
    }
@@ -32,8 +33,8 @@ __arm_gen_branch_thumb2(unsigned long pc, unsigned long addr, bool link)
    return __opcode_thumb32_compose(first, second);
 }
-static unsigned long
-__arm_gen_branch_arm(unsigned long pc, unsigned long addr, bool link)
+static unsigned long __arm_gen_branch_arm(unsigned long pc, unsigned long addr,
+					  bool link, bool warn)
 {
    unsigned long opcode = 0xea000000;
    long offset;
@@ -43,7 +44,7 @@ __arm_gen_branch_arm(unsigned long pc, unsigned long addr, bool link)
offset = (long)addr - (long)(pc + 8);
    if (unlikely(offset < -33554432 || offset > 33554428)) {
-		WARN_ON_ONCE(1);
+		WARN_ON_ONCE(warn);
    	return 0;
    }
@@ -53,10 +54,10 @@ __arm_gen_branch_arm(unsigned long pc, unsigned long addr, bool link)
 }
unsigned long
-__arm_gen_branch(unsigned long pc, unsigned long addr, bool link)
+__arm_gen_branch(unsigned long pc, unsigned long addr, bool link, bool warn)
 {
    if (IS_ENABLED(CONFIG_THUMB2_KERNEL))
-		return __arm_gen_branch_thumb2(pc, addr, link);
+		return __arm_gen_branch_thumb2(pc, addr, link, warn);
    else
-		return __arm_gen_branch_arm(pc, addr, link);
+		return __arm_gen_branch_arm(pc, addr, link, warn);
 }
diff --git a/arch/arm/kernel/module-plts.c b/arch/arm/kernel/module-plts.c
index 3d0c2e4dda1d..ed0e09cc735f 100644
--- a/arch/arm/kernel/module-plts.c
+++ b/arch/arm/kernel/module-plts.c
@@ -7,6 +7,7 @@
  */
#include <linux/elf.h>
+#include <linux/ftrace.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
 #include <linux/sort.h>
@@ -14,10 +15,6 @@
 #include <asm/cache.h>
 #include <asm/opcodes.h>
-#define PLT_ENT_STRIDE		L1_CACHE_BYTES
-#define PLT_ENT_COUNT		(PLT_ENT_STRIDE / sizeof(u32))
-#define PLT_ENT_SIZE		(sizeof(struct plt_entries) / PLT_ENT_COUNT)
-
 #ifdef CONFIG_THUMB2_KERNEL
 #define PLT_ENT_LDR		__opcode_to_mem_thumb32(0xf8dff000 | \
    						(PLT_ENT_STRIDE - 4))
@@ -26,9 +23,11 @@
    					    (PLT_ENT_STRIDE - 8))
 #endif
-struct plt_entries {
-	u32	ldr[PLT_ENT_COUNT];
-	u32	lit[PLT_ENT_COUNT];
+static const u32 fixed_plts[] = {
+#ifdef CONFIG_DYNAMIC_FTRACE
+	FTRACE_ADDR,
+	MCOUNT_ADDR,
+#endif
 };
static bool in_init(const struct module *mod, unsigned long loc)
@@ -36,14 +35,40 @@ static bool in_init(const struct module *mod, unsigned long loc)
    return loc - (u32)mod->init_layout.base < mod->init_layout.size;
 }
+static void prealloc_fixed(struct mod_plt_sec *pltsec, struct plt_entries *plt)
+{
+	int i;
+
+	if (!ARRAY_SIZE(fixed_plts) || pltsec->plt_count)
+		return;
+	pltsec->plt_count = ARRAY_SIZE(fixed_plts);
+
+	for (i = 0; i < ARRAY_SIZE(plt->ldr); ++i)
+		plt->ldr[i] = PLT_ENT_LDR;
+
+	BUILD_BUG_ON(sizeof(fixed_plts) > sizeof(plt->lit));
+	memcpy(plt->lit, fixed_plts, sizeof(fixed_plts));
+}
+
 u32 get_module_plt(struct module *mod, unsigned long loc, Elf32_Addr val)
 {
    struct mod_plt_sec *pltsec = !in_init(mod, loc) ? &mod->arch.core :
    						  &mod->arch.init;
+	struct plt_entries *plt;
+	int idx;
+
+	/* cache the address, ELF header is available only during module load */
+	if (!pltsec->plt_ent)
+		pltsec->plt_ent = (struct plt_entries *)pltsec->plt->sh_addr;
+	plt = pltsec->plt_ent;
-	struct plt_entries *plt = (struct plt_entries *)pltsec->plt->sh_addr;
-	int idx = 0;
+	prealloc_fixed(pltsec, plt);
+
+	for (idx = 0; idx < ARRAY_SIZE(fixed_plts); ++idx)
+		if (plt->lit[idx] == val)
+			return (u32)&plt->ldr[idx];
+	idx = 0;
    /*
     * Look for an existing entry pointing to 'val'. Given that the
     * relocations are sorted, this will be the last entry we allocated.
@@ -191,8 +216,8 @@ static unsigned int count_plts(const Elf32_Sym *syms, Elf32_Addr base,
 int module_frob_arch_sections(Elf_Ehdr *ehdr, Elf_Shdr *sechdrs,
    		      char *secstrings, struct module *mod)
 {
-	unsigned long core_plts = 0;
-	unsigned long init_plts = 0;
+	unsigned long core_plts = ARRAY_SIZE(fixed_plts);
+	unsigned long init_plts = ARRAY_SIZE(fixed_plts);
    Elf32_Shdr *s, *sechdrs_end = sechdrs + ehdr->e_shnum;
    Elf32_Sym *syms = NULL;
@@ -247,6 +272,7 @@ int module_frob_arch_sections(Elf_Ehdr *ehdr, Elf_Shdr *sechdrs,
    mod->arch.core.plt->sh_size = round_up(core_plts * PLT_ENT_SIZE,
    				       sizeof(struct plt_entries));
    mod->arch.core.plt_count = 0;
+	mod->arch.core.plt_ent = NULL;
mod->arch.init.plt->sh_type = SHT_NOBITS;
    mod->arch.init.plt->sh_flags = SHF_EXECINSTR | SHF_ALLOC;
@@ -254,6 +280,7 @@ int module_frob_arch_sections(Elf_Ehdr *ehdr, Elf_Shdr *sechdrs,
    mod->arch.init.plt->sh_size = round_up(init_plts * PLT_ENT_SIZE,
    				       sizeof(struct plt_entries));
    mod->arch.init.plt_count = 0;
+	mod->arch.init.plt_ent = NULL;
pr_debug("%s: plt=%x, init.plt=%x\n", __func__,
    	 mod->arch.core.plt->sh_size, mod->arch.init.plt->sh_size);
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index 2eb8ae1b2d03..b12275be0e13 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -433,7 +433,7 @@ config ARM64_ERRATUM_1024718
    help
      This option adds work around for Arm Cortex-A55 Erratum 1024718.
-	  Affected Cortex-A55 cores (r0p0, r0p1, r1p0) could cause incorrect
+	  Affected Cortex-A55 cores (all revisions) could cause incorrect
      update of the hardware dirty bit when the DBM/AP bits are updated
      without a break-before-make. The work around is to disable the usage
      of hardware DBM locally on the affected cores. CPUs not affected by
diff --git a/arch/arm64/boot/dts/marvell/armada-37xx.dtsi b/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
index f2004b0955f1..1a2f13203355 100644
--- a/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
+++ b/arch/arm64/boot/dts/marvell/armada-37xx.dtsi
@@ -186,8 +186,15 @@
    		#interrupt-cells = <1>;
    		msi-parent = <&pcie0>;
    		msi-controller;
-			ranges = <0x82000000 0 0xe8000000   0 0xe8000000 0 0x1000000 /* Port 0 MEM */
-				  0x81000000 0 0xe9000000   0 0xe9000000 0 0x10000>; /* Port 0 IO*/
+			/*
+			 * The 128 MiB address range [0xe8000000-0xf0000000] is
+			 * dedicated for PCIe and can be assigned to 8 windows
+			 * with size a power of two. Use one 64 KiB window for
+			 * IO at the end and the remaining seven windows
+			 * (totaling 127 MiB) for MEM.
+			 */
+			ranges = <0x82000000 0 0xe8000000   0 0xe8000000   0 0x07f00000   /* Port 0 MEM */
+				  0x81000000 0 0xefff0000   0 0xefff0000   0 0x00010000>; /* Port 0 IO */
    		interrupt-map-mask = <0 0 0 7>;
    		interrupt-map = <0 0 0 1 &pcie_intc 0>,
    				<0 0 0 2 &pcie_intc 1>,
diff --git a/arch/arm64/kernel/process.c b/arch/arm64/kernel/process.c
index e917d119490c..9c62365f8267 100644
--- a/arch/arm64/kernel/process.c
+++ b/arch/arm64/kernel/process.c
@@ -57,7 +57,7 @@
#ifdef CONFIG_CC_STACKPROTECTOR
 #include <linux/stackprotector.h>
-unsigned long __stack_chk_guard __read_mostly;
+unsigned long __stack_chk_guard __ro_after_init;
 EXPORT_SYMBOL(__stack_chk_guard);
 #endif
diff --git a/arch/arm64/mm/proc.S b/arch/arm64/mm/proc.S
index 3b95e3126eeb..1b91b8c8999b 100644
--- a/arch/arm64/mm/proc.S
+++ b/arch/arm64/mm/proc.S
@@ -442,8 +442,8 @@ ENTRY(__cpu_setup)
    cmp	x9, #2
    b.lt	1f
 #ifdef CONFIG_ARM64_ERRATUM_1024718
-	/* Disable hardware DBM on Cortex-A55 r0p0, r0p1 & r1p0 */
-	cpu_midr_match MIDR_CORTEX_A55, MIDR_CPU_VAR_REV(0, 0), MIDR_CPU_VAR_REV(1, 0), x1, x2, x3, x4
+	/* Disable hardware DBM on Cortex-A55 all versions */
+	cpu_midr_match MIDR_CORTEX_A55, MIDR_CPU_VAR_REV(0, 0), MIDR_CPU_VAR_REV(0xf, 0xf), x1, x2, x3, x4
    cbnz	x1, 1f
 #endif
    orr	x10, x10, #TCR_HD		// hardware Dirty flag update
diff --git a/arch/m68k/include/asm/raw_io.h b/arch/m68k/include/asm/raw_io.h
index 932faa35655b..2238232c360e 100644
--- a/arch/m68k/include/asm/raw_io.h
+++ b/arch/m68k/include/asm/raw_io.h
@@ -30,21 +30,21 @@ extern void __iounmap(void *addr, unsigned long size);
  * two accesses to memory, which may be undesirable for some devices.
  */
 #define in_8(addr) \
-    ({ u8 __v = (*(__force volatile u8 *) (addr)); __v; })
+    ({ u8 __v = (*(__force volatile u8 *) (unsigned long)(addr)); __v; })
 #define in_be16(addr) \
-    ({ u16 __v = (*(__force volatile u16 *) (addr)); __v; })
+    ({ u16 __v = (*(__force volatile u16 *) (unsigned long)(addr)); __v; })
 #define in_be32(addr) \
-    ({ u32 __v = (*(__force volatile u32 *) (addr)); __v; })
+    ({ u32 __v = (*(__force volatile u32 *) (unsigned long)(addr)); __v; })
 #define in_le16(addr) \
-    ({ u16 __v = le16_to_cpu(*(__force volatile __le16 *) (addr)); __v; })
+    ({ u16 __v = le16_to_cpu(*(__force volatile __le16 *) (unsigned long)(addr)); __v; })
 #define in_le32(addr) \
-    ({ u32 __v = le32_to_cpu(*(__force volatile __le32 *) (addr)); __v; })
+    ({ u32 __v = le32_to_cpu(*(__force volatile __le32 *) (unsigned long)(addr)); __v; })
-#define out_8(addr,b) (void)((*(__force volatile u8 *) (addr)) = (b))
-#define out_be16(addr,w) (void)((*(__force volatile u16 *) (addr)) = (w))
-#define out_be32(addr,l) (void)((*(__force volatile u32 *) (addr)) = (l))
-#define out_le16(addr,w) (void)((*(__force volatile __le16 *) (addr)) = cpu_to_le16(w))
-#define out_le32(addr,l) (void)((*(__force volatile __le32 *) (addr)) = cpu_to_le32(l))
+#define out_8(addr,b) (void)((*(__force volatile u8 *) (unsigned long)(addr)) = (b))
+#define out_be16(addr,w) (void)((*(__force volatile u16 *) (unsigned long)(addr)) = (w))
+#define out_be32(addr,l) (void)((*(__force volatile u32 *) (unsigned long)(addr)) = (l))
+#define out_le16(addr,w) (void)((*(__force volatile __le16 *) (unsigned long)(addr)) = cpu_to_le16(w))
+#define out_le32(addr,l) (void)((*(__force volatile __le32 *) (unsigned long)(addr)) = cpu_to_le32(l))
#define raw_inb in_8
 #define raw_inw in_be16
diff --git a/arch/parisc/include/asm/page.h b/arch/parisc/include/asm/page.h
index 80e742a1c162..088888fcf8df 100644
--- a/arch/parisc/include/asm/page.h
+++ b/arch/parisc/include/asm/page.h
@@ -174,7 +174,7 @@ extern int npmem_ranges;
 #include <asm-generic/getorder.h>
 #include <asm/pdc.h>
-#define PAGE0   ((struct zeropage *)__PAGE_OFFSET)
+#define PAGE0   ((struct zeropage *)absolute_pointer(__PAGE_OFFSET))
/* DEFINITION OF THE ZERO-PAGE (PAG0) */
 /* based on work by Jason Eckhardt (jason@equator.com) */
diff --git a/arch/sparc/kernel/mdesc.c b/arch/sparc/kernel/mdesc.c
index 8a6982dfd733..5aa33bf7139e 100644
--- a/arch/sparc/kernel/mdesc.c
+++ b/arch/sparc/kernel/mdesc.c
@@ -37,6 +37,7 @@ struct mdesc_hdr {
    u32	node_sz; /* node block size */
    u32	name_sz; /* name block size */
    u32	data_sz; /* data block size */
+	char	data[];
 } __attribute__((aligned(16)));
struct mdesc_elem {
@@ -369,7 +370,7 @@ void mdesc_update(void)
static struct mdesc_elem *node_block(struct mdesc_hdr *mdesc)
 {
-	return (struct mdesc_elem *) (mdesc + 1);
+	return (struct mdesc_elem *) mdesc->data;
 }
static void *name_block(struct mdesc_hdr *mdesc)
diff --git a/arch/x86/xen/enlighten.c b/arch/x86/xen/enlighten.c
index 21e01fc632ad..5c3a3227cb2b 100644
--- a/arch/x86/xen/enlighten.c
+++ b/arch/x86/xen/enlighten.c
@@ -872,8 +872,8 @@ static void xen_write_idt_entry(gate_desc *dt, int entrynum, const gate_desc *g)
    preempt_enable();
 }
-static void xen_convert_trap_info(const struct desc_ptr *desc,
-				  struct trap_info *traps)
+static unsigned xen_convert_trap_info(const struct desc_ptr *desc,
+				      struct trap_info *traps, bool full)
 {
    unsigned in, out, count;
@@ -883,17 +883,18 @@ static void xen_convert_trap_info(const struct desc_ptr *desc,
    for (in = out = 0; in < count; in++) {
    	gate_desc *entry = (gate_desc*)(desc->address) + in;
-		if (cvt_gate_to_trap(in, entry, &traps[out]))
+		if (cvt_gate_to_trap(in, entry, &traps[out]) || full)
    		out++;
    }
-	traps[out].address = 0;
+
+	return out;
 }
void xen_copy_trap_info(struct trap_info *traps)
 {
    const struct desc_ptr *desc = this_cpu_ptr(&idt_desc);
-	xen_convert_trap_info(desc, traps);
+	xen_convert_trap_info(desc, traps, true);
 }
/* Load a new IDT into Xen.  In principle this can be per-CPU, so we
@@ -903,6 +904,7 @@ static void xen_load_idt(const struct desc_ptr *desc)
 {
    static DEFINE_SPINLOCK(lock);
    static struct trap_info traps[257];
+	unsigned out;
trace_xen_cpu_load_idt(desc);
@@ -910,7 +912,8 @@ static void xen_load_idt(const struct desc_ptr *desc)
memcpy(this_cpu_ptr(&idt_desc), desc, sizeof(idt_desc));
-	xen_convert_trap_info(desc, traps);
+	out = xen_convert_trap_info(desc, traps, false);
+	memset(&traps[out], 0, sizeof(traps[0]));
xen_mc_flush();
    if (HYPERVISOR_set_trap_table(traps))
diff --git a/drivers/cpufreq/cpufreq_governor_attr_set.c b/drivers/cpufreq/cpufreq_governor_attr_set.c
index 52841f807a7e..45fdf30cade3 100644
--- a/drivers/cpufreq/cpufreq_governor_attr_set.c
+++ b/drivers/cpufreq/cpufreq_governor_attr_set.c
@@ -77,8 +77,8 @@ unsigned int gov_attr_set_put(struct gov_attr_set *attr_set, struct list_head *l
    if (count)
    	return count;
-	kobject_put(&attr_set->kobj);
    mutex_destroy(&attr_set->update_lock);
+	kobject_put(&attr_set->kobj);
    return 0;
 }
 EXPORT_SYMBOL_GPL(gov_attr_set_put);
diff --git a/drivers/edac/synopsys_edac.c b/drivers/edac/synopsys_edac.c
index fc153aea2f6c..091f03852dca 100644
--- a/drivers/edac/synopsys_edac.c
+++ b/drivers/edac/synopsys_edac.c
@@ -371,7 +371,7 @@ static int synps_edac_init_csrows(struct mem_ctl_info *mci)
for (j = 0; j < csi->nr_channels; j++) {
    		dimm            = csi->channels[j]->dimm;
-			dimm->edac_mode = EDAC_FLAG_SECDED;
+			dimm->edac_mode = EDAC_SECDED;
    		dimm->mtype     = synps_edac_get_mtype(priv->baseaddr);
    		dimm->nr_pages  = (size >> PAGE_SHIFT) / csi->nr_channels;
    		dimm->grain     = SYNPS_EDAC_ERR_GRAIN;
diff --git a/drivers/hid/hid-betopff.c b/drivers/hid/hid-betopff.c
index 69cfc8dc6af1..9b60efe6ec44 100644
--- a/drivers/hid/hid-betopff.c
+++ b/drivers/hid/hid-betopff.c
@@ -59,15 +59,22 @@ static int betopff_init(struct hid_device *hid)
 {
    struct betopff_device *betopff;
    struct hid_report *report;
-	struct hid_input *hidinput =
-			list_first_entry(&hid->inputs, struct hid_input, list);
+	struct hid_input *hidinput;
    struct list_head *report_list =
    		&hid->report_enum[HID_OUTPUT_REPORT].report_list;
-	struct input_dev *dev = hidinput->input;
+	struct input_dev *dev;
    int field_count = 0;
    int error;
    int i, j;
+	if (list_empty(&hid->inputs)) {
+		hid_err(hid, "no inputs found\n");
+		return -ENODEV;
+	}
+
+	hidinput = list_first_entry(&hid->inputs, struct hid_input, list);
+	dev = hidinput->input;
+
    if (list_empty(report_list)) {
    	hid_err(hid, "no output reports found\n");
    	return -ENODEV;
diff --git a/drivers/hid/usbhid/hid-core.c b/drivers/hid/usbhid/hid-core.c
index b6600329a272..368f849decd1 100644
--- a/drivers/hid/usbhid/hid-core.c
+++ b/drivers/hid/usbhid/hid-core.c
@@ -500,7 +500,7 @@ static void hid_ctrl(struct urb *urb)
if (unplug) {
    	usbhid->ctrltail = usbhid->ctrlhead;
-	} else {
+	} else if (usbhid->ctrlhead != usbhid->ctrltail) {
    	usbhid->ctrltail = (usbhid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1);
if (usbhid->ctrlhead != usbhid->ctrltail &&
@@ -1185,9 +1185,20 @@ static void usbhid_stop(struct hid_device *hid)
    	usbhid->intf->needs_remote_wakeup = 0;
clear_bit(HID_STARTED, &usbhid->iofl);
+
    spin_lock_irq(&usbhid->lock);	/* Sync with error and led handlers */
    set_bit(HID_DISCONNECTED, &usbhid->iofl);
+	while (usbhid->ctrltail != usbhid->ctrlhead) {
+		if (usbhid->ctrl[usbhid->ctrltail].dir == USB_DIR_OUT) {
+			kfree(usbhid->ctrl[usbhid->ctrltail].raw_report);
+			usbhid->ctrl[usbhid->ctrltail].raw_report = NULL;
+		}
+
+		usbhid->ctrltail = (usbhid->ctrltail + 1) &
+			(HID_CONTROL_FIFO_SIZE - 1);
+	}
    spin_unlock_irq(&usbhid->lock);
+
    usb_kill_urb(usbhid->urbin);
    usb_kill_urb(usbhid->urbout);
    usb_kill_urb(usbhid->urbctrl);
diff --git a/drivers/hwmon/tmp421.c b/drivers/hwmon/tmp421.c
index bfb98b96c781..324e7aaeb0b1 100644
--- a/drivers/hwmon/tmp421.c
+++ b/drivers/hwmon/tmp421.c
@@ -83,23 +83,17 @@ struct tmp421_data {
    s16 temp[4];
 };
-static int temp_from_s16(s16 reg)
+static int temp_from_raw(u16 reg, bool extended)
 {
    /* Mask out status bits */
    int temp = reg & ~0xf;
-	return (temp * 1000 + 128) / 256;
-}
-
-static int temp_from_u16(u16 reg)
-{
-	/* Mask out status bits */
-	int temp = reg & ~0xf;
-
-	/* Add offset for extended temperature range. */
-	temp -= 64 * 256;
+	if (extended)
+		temp = temp - 64 * 256;
+	else
+		temp = (s16)temp;
-	return (temp * 1000 + 128) / 256;
+	return DIV_ROUND_CLOSEST(temp * 1000, 256);
 }
static struct tmp421_data *tmp421_update_device(struct device *dev)
@@ -136,10 +130,8 @@ static int tmp421_read(struct device *dev, enum hwmon_sensor_types type,
switch (attr) {
    case hwmon_temp_input:
-		if (tmp421->config & TMP421_CONFIG_RANGE)
-			*val = temp_from_u16(tmp421->temp[channel]);
-		else
-			*val = temp_from_s16(tmp421->temp[channel]);
+		*val = temp_from_raw(tmp421->temp[channel],
+				     tmp421->config & TMP421_CONFIG_RANGE);
    	return 0;
    case hwmon_temp_fault:
    	/*
diff --git a/drivers/ipack/devices/ipoctal.c b/drivers/ipack/devices/ipoctal.c
index 75dd15d66df6..f558aeb8f888 100644
--- a/drivers/ipack/devices/ipoctal.c
+++ b/drivers/ipack/devices/ipoctal.c
@@ -38,6 +38,7 @@ struct ipoctal_channel {
    unsigned int			pointer_read;
    unsigned int			pointer_write;
    struct tty_port			tty_port;
+	bool				tty_registered;
    union scc2698_channel __iomem	*regs;
    union scc2698_block __iomem	*block_regs;
    unsigned int			board_id;
@@ -86,22 +87,34 @@ static int ipoctal_port_activate(struct tty_port *port, struct tty_struct *tty)
    return 0;
 }
-static int ipoctal_open(struct tty_struct *tty, struct file *file)
+static int ipoctal_install(struct tty_driver *driver, struct tty_struct *tty)
 {
    struct ipoctal_channel *channel = dev_get_drvdata(tty->dev);
    struct ipoctal *ipoctal = chan_to_ipoctal(channel, tty->index);
-	int err;
-
-	tty->driver_data = channel;
+	int res;
if (!ipack_get_carrier(ipoctal->dev))
    	return -EBUSY;
-	err = tty_port_open(&channel->tty_port, tty, file);
-	if (err)
-		ipack_put_carrier(ipoctal->dev);
+	res = tty_standard_install(driver, tty);
+	if (res)
+		goto err_put_carrier;
+
+	tty->driver_data = channel;
+
+	return 0;
+
+err_put_carrier:
+	ipack_put_carrier(ipoctal->dev);
+
+	return res;
+}
+
+static int ipoctal_open(struct tty_struct *tty, struct file *file)
+{
+	struct ipoctal_channel *channel = tty->driver_data;
-	return err;
+	return tty_port_open(&channel->tty_port, tty, file);
 }
static void ipoctal_reset_stats(struct ipoctal_stats *stats)
@@ -269,7 +282,6 @@ static int ipoctal_inst_slot(struct ipoctal *ipoctal, unsigned int bus_nr,
    int res;
    int i;
    struct tty_driver *tty;
-	char name[20];
    struct ipoctal_channel *channel;
    struct ipack_region *region;
    void __iomem *addr;
@@ -360,8 +372,11 @@ static int ipoctal_inst_slot(struct ipoctal *ipoctal, unsigned int bus_nr,
    /* Fill struct tty_driver with ipoctal data */
    tty->owner = THIS_MODULE;
    tty->driver_name = KBUILD_MODNAME;
-	sprintf(name, KBUILD_MODNAME ".%d.%d.", bus_nr, slot);
-	tty->name = name;
+	tty->name = kasprintf(GFP_KERNEL, KBUILD_MODNAME ".%d.%d.", bus_nr, slot);
+	if (!tty->name) {
+		res = -ENOMEM;
+		goto err_put_driver;
+	}
    tty->major = 0;
tty->minor_start = 0;
@@ -377,8 +392,7 @@ static int ipoctal_inst_slot(struct ipoctal *ipoctal, unsigned int bus_nr,
    res = tty_register_driver(tty);
    if (res) {
    	dev_err(&ipoctal->dev->dev, "Can't register tty driver.\n");
-		put_tty_driver(tty);
-		return res;
+		goto err_free_name;
    }
/* Save struct tty_driver for use it when uninstalling the device */
@@ -389,7 +403,9 @@ static int ipoctal_inst_slot(struct ipoctal *ipoctal, unsigned int bus_nr,
channel = &ipoctal->channel[i];
    	tty_port_init(&channel->tty_port);
-		tty_port_alloc_xmit_buf(&channel->tty_port);
+		res = tty_port_alloc_xmit_buf(&channel->tty_port);
+		if (res)
+			continue;
    	channel->tty_port.ops = &ipoctal_tty_port_ops;
ipoctal_reset_stats(&channel->stats);
@@ -397,13 +413,15 @@ static int ipoctal_inst_slot(struct ipoctal *ipoctal, unsigned int bus_nr,
    	spin_lock_init(&channel->lock);
    	channel->pointer_read = 0;
    	channel->pointer_write = 0;
-		tty_dev = tty_port_register_device(&channel->tty_port, tty, i, NULL);
+		tty_dev = tty_port_register_device_attr(&channel->tty_port, tty,
+							i, NULL, channel, NULL);
    	if (IS_ERR(tty_dev)) {
    		dev_err(&ipoctal->dev->dev, "Failed to register tty device.\n");
+			tty_port_free_xmit_buf(&channel->tty_port);
    		tty_port_destroy(&channel->tty_port);
    		continue;
    	}
-		dev_set_drvdata(tty_dev, channel);
+		channel->tty_registered = true;
    }
/*
@@ -415,6 +433,13 @@ static int ipoctal_inst_slot(struct ipoctal *ipoctal, unsigned int bus_nr,
    			       ipoctal_irq_handler, ipoctal);
return 0;
+
+err_free_name:
+	kfree(tty->name);
+err_put_driver:
+	put_tty_driver(tty);
+
+	return res;
 }
static inline int ipoctal_copy_write_buffer(struct ipoctal_channel *channel,
@@ -655,6 +680,7 @@ static void ipoctal_cleanup(struct tty_struct *tty)
static const struct tty_operations ipoctal_fops = {
    .ioctl =		NULL,
+	.install =		ipoctal_install,
    .open =			ipoctal_open,
    .close =		ipoctal_close,
    .write =		ipoctal_write_tty,
@@ -697,12 +723,17 @@ static void __ipoctal_remove(struct ipoctal *ipoctal)
for (i = 0; i < NR_CHANNELS; i++) {
    	struct ipoctal_channel *channel = &ipoctal->channel[i];
+
+		if (!channel->tty_registered)
+			continue;
+
    	tty_unregister_device(ipoctal->tty_drv, i);
    	tty_port_free_xmit_buf(&channel->tty_port);
    	tty_port_destroy(&channel->tty_port);
    }
tty_unregister_driver(ipoctal->tty_drv);
+	kfree(ipoctal->tty_drv->name);
    put_tty_driver(ipoctal->tty_drv);
    kfree(ipoctal);
 }
diff --git a/drivers/mcb/mcb-core.c b/drivers/mcb/mcb-core.c
index 921a5d2a802b..96801137a144 100644
--- a/drivers/mcb/mcb-core.c
+++ b/drivers/mcb/mcb-core.c
@@ -280,8 +280,8 @@ struct mcb_bus *mcb_alloc_bus(struct device *carrier)
bus_nr = ida_simple_get(&mcb_ida, 0, 0, GFP_KERNEL);
    if (bus_nr < 0) {
-		rc = bus_nr;
-		goto err_free;
+		kfree(bus);
+		return ERR_PTR(bus_nr);
    }
bus->bus_nr = bus_nr;
@@ -296,12 +296,12 @@ struct mcb_bus *mcb_alloc_bus(struct device *carrier)
    dev_set_name(&bus->dev, "mcb:%d", bus_nr);
    rc = device_add(&bus->dev);
    if (rc)
-		goto err_free;
+		goto err_put;
return bus;
-err_free:
-	put_device(carrier);
-	kfree(bus);
+
+err_put:
+	put_device(&bus->dev);
    return ERR_PTR(rc);
 }
 EXPORT_SYMBOL_GPL(mcb_alloc_bus);
diff --git a/drivers/net/ethernet/i825xx/82596.c b/drivers/net/ethernet/i825xx/82596.c
index ce235b776793..299628931bdb 100644
--- a/drivers/net/ethernet/i825xx/82596.c
+++ b/drivers/net/ethernet/i825xx/82596.c
@@ -1155,7 +1155,7 @@ struct net_device * __init i82596_probe(int unit)
    		err = -ENODEV;
    		goto out;
    	}
-		memcpy(eth_addr, (void *) 0xfffc1f2c, ETH_ALEN);	/* YUCK! Get addr from NOVRAM */
+		memcpy(eth_addr, absolute_pointer(0xfffc1f2c), ETH_ALEN); /* YUCK! Get addr from NOVRAM */
    	dev->base_addr = MVME_I596_BASE;
    	dev->irq = (unsigned) MVME16x_IRQ_I596;
    	goto found;
diff --git a/drivers/net/ethernet/intel/e100.c b/drivers/net/ethernet/intel/e100.c
index 9035cb5fc70d..aa556e4f9051 100644
--- a/drivers/net/ethernet/intel/e100.c
+++ b/drivers/net/ethernet/intel/e100.c
@@ -2462,11 +2462,15 @@ static void e100_get_drvinfo(struct net_device *netdev,
    	sizeof(info->bus_info));
 }
-#define E100_PHY_REGS 0x1C
+#define E100_PHY_REGS 0x1D
 static int e100_get_regs_len(struct net_device *netdev)
 {
    struct nic *nic = netdev_priv(netdev);
-	return 1 + E100_PHY_REGS + sizeof(nic->mem->dump_buf);
+
+	/* We know the number of registers, and the size of the dump buffer.
+	 * Calculate the total size in bytes.
+	 */
+	return (1 + E100_PHY_REGS) * sizeof(u32) + sizeof(nic->mem->dump_buf);
 }
static void e100_get_regs(struct net_device *netdev,
@@ -2480,14 +2484,18 @@ static void e100_get_regs(struct net_device *netdev,
    buff[0] = ioread8(&nic->csr->scb.cmd_hi) << 24 |
    	ioread8(&nic->csr->scb.cmd_lo) << 16 |
    	ioread16(&nic->csr->scb.status);
-	for (i = E100_PHY_REGS; i >= 0; i--)
-		buff[1 + E100_PHY_REGS - i] =
-			mdio_read(netdev, nic->mii.phy_id, i);
+	for (i = 0; i < E100_PHY_REGS; i++)
+		/* Note that we read the registers in reverse order. This
+		 * ordering is the ABI apparently used by ethtool and other
+		 * applications.
+		 */
+		buff[1 + i] = mdio_read(netdev, nic->mii.phy_id,
+					E100_PHY_REGS - 1 - i);
    memset(nic->mem->dump_buf, 0, sizeof(nic->mem->dump_buf));
    e100_exec_cb(nic, NULL, e100_dump);
    msleep(10);
-	memcpy(&buff[2 + E100_PHY_REGS], nic->mem->dump_buf,
-		sizeof(nic->mem->dump_buf));
+	memcpy(&buff[1 + E100_PHY_REGS], nic->mem->dump_buf,
+	       sizeof(nic->mem->dump_buf));
 }
static void e100_get_wol(struct net_device *netdev, struct ethtool_wolinfo *wol)
diff --git a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
index 543f30dec4a0..dbb65145b35e 100644
--- a/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
+++ b/drivers/net/ethernet/mellanox/mlx4/en_netdev.c
@@ -309,6 +309,9 @@ mlx4_en_filter_rfs(struct net_device *net_dev, const struct sk_buff *skb,
    int nhoff = skb_network_offset(skb);
    int ret = 0;
+	if (skb->encapsulation)
+		return -EPROTONOSUPPORT;
+
    if (skb->protocol != htons(ETH_P_IP))
    	return -EPROTONOSUPPORT;
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index dbd56fefa2f3..0a7ff854d1c3 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -178,7 +178,7 @@ static void stmmac_clk_csr_set(struct stmmac_priv *priv)
    		priv->clk_csr = STMMAC_CSR_100_150M;
    	else if ((clk_rate >= CSR_F_150M) && (clk_rate < CSR_F_250M))
    		priv->clk_csr = STMMAC_CSR_150_250M;
-		else if ((clk_rate >= CSR_F_250M) && (clk_rate < CSR_F_300M))
+		else if ((clk_rate >= CSR_F_250M) && (clk_rate <= CSR_F_300M))
    		priv->clk_csr = STMMAC_CSR_250_300M;
    }
 }
diff --git a/drivers/net/hamradio/6pack.c b/drivers/net/hamradio/6pack.c
index e510dbda77e5..96fb2a2a59f0 100644
--- a/drivers/net/hamradio/6pack.c
+++ b/drivers/net/hamradio/6pack.c
@@ -68,9 +68,9 @@
 #define SIXP_DAMA_OFF		0
/* default level 2 parameters */
-#define SIXP_TXDELAY			(HZ/4)	/* in 1 s */
+#define SIXP_TXDELAY			25	/* 250 ms */
 #define SIXP_PERSIST			50	/* in 256ths */
-#define SIXP_SLOTTIME			(HZ/10)	/* in 1 s */
+#define SIXP_SLOTTIME			10	/* 100 ms */
 #define SIXP_INIT_RESYNC_TIMEOUT	(3*HZ/2) /* in 1 s */
 #define SIXP_RESYNC_TIMEOUT		5*HZ	/* in 1 s */
diff --git a/drivers/net/usb/hso.c b/drivers/net/usb/hso.c
index 5066b7bc67da..bde19425e9c1 100644
--- a/drivers/net/usb/hso.c
+++ b/drivers/net/usb/hso.c
@@ -2715,14 +2715,14 @@ struct hso_device *hso_create_mux_serial_device(struct usb_interface *interface,
serial = kzalloc(sizeof(*serial), GFP_KERNEL);
    if (!serial)
-		goto exit;
+		goto err_free_dev;
hso_dev->port_data.dev_serial = serial;
    serial->parent = hso_dev;
if (hso_serial_common_create
        (serial, 1, CTRL_URB_RX_SIZE, CTRL_URB_TX_SIZE))
-		goto exit;
+		goto err_free_serial;
serial->tx_data_length--;
    serial->write_data = hso_mux_serial_write_data;
@@ -2738,11 +2738,9 @@ struct hso_device *hso_create_mux_serial_device(struct usb_interface *interface,
    /* done, return it */
    return hso_dev;
-exit:
-	if (serial) {
-		tty_unregister_device(tty_drv, serial->minor);
-		kfree(serial);
-	}
+err_free_serial:
+	kfree(serial);
+err_free_dev:
    kfree(hso_dev);
    return NULL;
diff --git a/drivers/scsi/scsi_transport_iscsi.c b/drivers/scsi/scsi_transport_iscsi.c
index 8d10b35caed5..aed17f958448 100644
--- a/drivers/scsi/scsi_transport_iscsi.c
+++ b/drivers/scsi/scsi_transport_iscsi.c
@@ -429,9 +429,7 @@ static umode_t iscsi_iface_attr_is_visible(struct kobject *kobj,
    struct iscsi_transport *t = iface->transport;
    int param = -1;
-	if (attr == &dev_attr_iface_enabled.attr)
-		param = ISCSI_NET_PARAM_IFACE_ENABLE;
-	else if (attr == &dev_attr_iface_def_taskmgmt_tmo.attr)
+	if (attr == &dev_attr_iface_def_taskmgmt_tmo.attr)
    	param = ISCSI_IFACE_PARAM_DEF_TASKMGMT_TMO;
    else if (attr == &dev_attr_iface_header_digest.attr)
    	param = ISCSI_IFACE_PARAM_HDRDGST_EN;
@@ -471,7 +469,9 @@ static umode_t iscsi_iface_attr_is_visible(struct kobject *kobj,
    if (param != -1)
    	return t->attr_is_visible(ISCSI_IFACE_PARAM, param);
-	if (attr == &dev_attr_iface_vlan_id.attr)
+	if (attr == &dev_attr_iface_enabled.attr)
+		param = ISCSI_NET_PARAM_IFACE_ENABLE;
+	else if (attr == &dev_attr_iface_vlan_id.attr)
    	param = ISCSI_NET_PARAM_VLAN_ID;
    else if (attr == &dev_attr_iface_vlan_priority.attr)
    	param = ISCSI_NET_PARAM_VLAN_PRIORITY;
diff --git a/drivers/spi/spi-tegra20-slink.c b/drivers/spi/spi-tegra20-slink.c
index 9f14560686b6..88bfe7682a9e 100644
--- a/drivers/spi/spi-tegra20-slink.c
+++ b/drivers/spi/spi-tegra20-slink.c
@@ -1210,7 +1210,7 @@ static int tegra_slink_resume(struct device *dev)
 }
 #endif
-static int tegra_slink_runtime_suspend(struct device *dev)
+static int __maybe_unused tegra_slink_runtime_suspend(struct device *dev)
 {
    struct spi_master *master = dev_get_drvdata(dev);
    struct tegra_slink_data *tspi = spi_master_get_devdata(master);
@@ -1222,7 +1222,7 @@ static int tegra_slink_runtime_suspend(struct device *dev)
    return 0;
 }
-static int tegra_slink_runtime_resume(struct device *dev)
+static int __maybe_unused tegra_slink_runtime_resume(struct device *dev)
 {
    struct spi_master *master = dev_get_drvdata(dev);
    struct tegra_slink_data *tspi = spi_master_get_devdata(master);
diff --git a/drivers/staging/greybus/uart.c b/drivers/staging/greybus/uart.c
index c35c9b766a00..d4c7210cdb0e 100644
--- a/drivers/staging/greybus/uart.c
+++ b/drivers/staging/greybus/uart.c
@@ -812,6 +812,17 @@ static void gb_tty_port_shutdown(struct tty_port *port)
    gbphy_runtime_put_autosuspend(gb_tty->gbphy_dev);
 }
+static void gb_tty_port_destruct(struct tty_port *port)
+{
+	struct gb_tty *gb_tty = container_of(port, struct gb_tty, port);
+
+	if (gb_tty->minor != GB_NUM_MINORS)
+		release_minor(gb_tty);
+	kfifo_free(&gb_tty->write_fifo);
+	kfree(gb_tty->buffer);
+	kfree(gb_tty);
+}
+
 static const struct tty_operations gb_ops = {
    .install =		gb_tty_install,
    .open =			gb_tty_open,
@@ -834,6 +845,7 @@ static struct tty_port_operations gb_port_ops = {
    .dtr_rts =		gb_tty_dtr_rts,
    .activate =		gb_tty_port_activate,
    .shutdown =		gb_tty_port_shutdown,
+	.destruct =		gb_tty_port_destruct,
 };
static int gb_uart_probe(struct gbphy_device *gbphy_dev,
@@ -846,17 +858,11 @@ static int gb_uart_probe(struct gbphy_device *gbphy_dev,
    int retval;
    int minor;
-	gb_tty = kzalloc(sizeof(*gb_tty), GFP_KERNEL);
-	if (!gb_tty)
-		return -ENOMEM;
-
    connection = gb_connection_create(gbphy_dev->bundle,
    				  le16_to_cpu(gbphy_dev->cport_desc->id),
    				  gb_uart_request_handler);
-	if (IS_ERR(connection)) {
-		retval = PTR_ERR(connection);
-		goto exit_tty_free;
-	}
+	if (IS_ERR(connection))
+		return PTR_ERR(connection);
max_payload = gb_operation_get_payload_size_max(connection);
    if (max_payload < sizeof(struct gb_uart_send_data_request)) {
@@ -864,13 +870,23 @@ static int gb_uart_probe(struct gbphy_device *gbphy_dev,
    	goto exit_connection_destroy;
    }
+	gb_tty = kzalloc(sizeof(*gb_tty), GFP_KERNEL);
+	if (!gb_tty) {
+		retval = -ENOMEM;
+		goto exit_connection_destroy;
+	}
+
+	tty_port_init(&gb_tty->port);
+	gb_tty->port.ops = &gb_port_ops;
+	gb_tty->minor = GB_NUM_MINORS;
+
    gb_tty->buffer_payload_max = max_payload -
    		sizeof(struct gb_uart_send_data_request);
gb_tty->buffer = kzalloc(gb_tty->buffer_payload_max, GFP_KERNEL);
    if (!gb_tty->buffer) {
    	retval = -ENOMEM;
-		goto exit_connection_destroy;
+		goto exit_put_port;
    }
INIT_WORK(&gb_tty->tx_work, gb_uart_tx_write_work);
@@ -878,7 +894,7 @@ static int gb_uart_probe(struct gbphy_device *gbphy_dev,
    retval = kfifo_alloc(&gb_tty->write_fifo, GB_UART_WRITE_FIFO_SIZE,
    		     GFP_KERNEL);
    if (retval)
-		goto exit_buf_free;
+		goto exit_put_port;
gb_tty->credits = GB_UART_FIRMWARE_CREDITS;
    init_completion(&gb_tty->credits_complete);
@@ -892,7 +908,7 @@ static int gb_uart_probe(struct gbphy_device *gbphy_dev,
    	} else {
    		retval = minor;
    	}
-		goto exit_kfifo_free;
+		goto exit_put_port;
    }
gb_tty->minor = minor;
@@ -901,9 +917,6 @@ static int gb_uart_probe(struct gbphy_device *gbphy_dev,
    init_waitqueue_head(&gb_tty->wioctl);
    mutex_init(&gb_tty->mutex);
-	tty_port_init(&gb_tty->port);
-	gb_tty->port.ops = &gb_port_ops;
-
    gb_tty->connection = connection;
    gb_tty->gbphy_dev = gbphy_dev;
    gb_connection_set_data(connection, gb_tty);
@@ -911,7 +924,7 @@ static int gb_uart_probe(struct gbphy_device *gbphy_dev,
retval = gb_connection_enable_tx(connection);
    if (retval)
-		goto exit_release_minor;
+		goto exit_put_port;
send_control(gb_tty, gb_tty->ctrlout);
@@ -938,16 +951,10 @@ static int gb_uart_probe(struct gbphy_device *gbphy_dev,
exit_connection_disable:
    gb_connection_disable(connection);
-exit_release_minor:
-	release_minor(gb_tty);
-exit_kfifo_free:
-	kfifo_free(&gb_tty->write_fifo);
-exit_buf_free:
-	kfree(gb_tty->buffer);
+exit_put_port:
+	tty_port_put(&gb_tty->port);
 exit_connection_destroy:
    gb_connection_destroy(connection);
-exit_tty_free:
-	kfree(gb_tty);
return retval;
 }
@@ -978,15 +985,10 @@ static void gb_uart_remove(struct gbphy_device *gbphy_dev)
    gb_connection_disable_rx(connection);
    tty_unregister_device(gb_tty_driver, gb_tty->minor);
-	/* FIXME - free transmit / receive buffers */
-
    gb_connection_disable(connection);
-	tty_port_destroy(&gb_tty->port);
    gb_connection_destroy(connection);
-	release_minor(gb_tty);
-	kfifo_free(&gb_tty->write_fifo);
-	kfree(gb_tty->buffer);
-	kfree(gb_tty);
+
+	tty_port_put(&gb_tty->port);
 }
static int gb_tty_init(void)
diff --git a/drivers/tty/serial/mvebu-uart.c b/drivers/tty/serial/mvebu-uart.c
index a10e4aa9e18e..ffd454e4bacf 100644
--- a/drivers/tty/serial/mvebu-uart.c
+++ b/drivers/tty/serial/mvebu-uart.c
@@ -108,7 +108,7 @@ static unsigned int mvebu_uart_tx_empty(struct uart_port *port)
    st = readl(port->membase + UART_STAT);
    spin_unlock_irqrestore(&port->lock, flags);
-	return (st & STAT_TX_FIFO_EMP) ? TIOCSER_TEMT : 0;
+	return (st & STAT_TX_EMP) ? TIOCSER_TEMT : 0;
 }
static unsigned int mvebu_uart_get_mctrl(struct uart_port *port)
diff --git a/drivers/tty/vt/vt.c b/drivers/tty/vt/vt.c
index 8c74d9ebfc50..9f1573b0e453 100644
--- a/drivers/tty/vt/vt.c
+++ b/drivers/tty/vt/vt.c
@@ -886,8 +886,25 @@ static int vc_do_resize(struct tty_struct *tty, struct vc_data *vc,
    new_row_size = new_cols << 1;
    new_screen_size = new_row_size * new_rows;
-	if (new_cols == vc->vc_cols && new_rows == vc->vc_rows)
-		return 0;
+	if (new_cols == vc->vc_cols && new_rows == vc->vc_rows) {
+		/*
+		 * This function is being called here to cover the case
+		 * where the userspace calls the FBIOPUT_VSCREENINFO twice,
+		 * passing the same fb_var_screeninfo containing the fields
+		 * yres/xres equal to a number non-multiple of vc_font.height
+		 * and yres_virtual/xres_virtual equal to number lesser than the
+		 * vc_font.height and yres/xres.
+		 * In the second call, the struct fb_var_screeninfo isn't
+		 * being modified by the underlying driver because of the
+		 * if above, and this causes the fbcon_display->vrows to become
+		 * negative and it eventually leads to out-of-bound
+		 * access by the imageblit function.
+		 * To give the correct values to the struct and to not have
+		 * to deal with possible errors from the code below, we call
+		 * the resize_screen here as well.
+		 */
+		return resize_screen(vc, new_cols, new_rows, user);
+	}
if (new_screen_size > (4 << 20) || !new_screen_size)
    	return -EINVAL;
diff --git a/drivers/usb/gadget/udc/r8a66597-udc.c b/drivers/usb/gadget/udc/r8a66597-udc.c
index 80503c3604ca..192d76a1bdd5 100644
--- a/drivers/usb/gadget/udc/r8a66597-udc.c
+++ b/drivers/usb/gadget/udc/r8a66597-udc.c
@@ -1253,7 +1253,7 @@ static void set_feature(struct r8a66597 *r8a66597, struct usb_ctrlrequest *ctrl)
    		do {
    			tmp = r8a66597_read(r8a66597, INTSTS0) & CTSQ;
    			udelay(1);
-			} while (tmp != CS_IDST || timeout-- > 0);
+			} while (tmp != CS_IDST && timeout-- > 0);
if (tmp == CS_IDST)
    			r8a66597_bset(r8a66597,
diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c
index e85cc8e4e7a9..7e9204fdba4a 100644
--- a/drivers/usb/musb/tusb6010.c
+++ b/drivers/usb/musb/tusb6010.c
@@ -193,6 +193,7 @@ tusb_fifo_write_unaligned(void __iomem *fifo, const u8 *buf, u16 len)
    }
    if (len > 0) {
    	/* Write the rest 1 - 3 bytes to FIFO */
+		val = 0;
    	memcpy(&val, buf, len);
    	musb_writel(fifo, 0, val);
    }
diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index c5d637848f9b..dde28ede396b 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -231,6 +231,7 @@ static const struct usb_device_id id_table[] = {
    { USB_DEVICE(0x1FB9, 0x0602) }, /* Lake Shore Model 648 Magnet Power Supply */
    { USB_DEVICE(0x1FB9, 0x0700) }, /* Lake Shore Model 737 VSM Controller */
    { USB_DEVICE(0x1FB9, 0x0701) }, /* Lake Shore Model 776 Hall Matrix */
+	{ USB_DEVICE(0x2184, 0x0030) }, /* GW Instek GDM-834x Digital Multimeter */
    { USB_DEVICE(0x2626, 0xEA60) }, /* Aruba Networks 7xxx USB Serial Console */
    { USB_DEVICE(0x3195, 0xF190) }, /* Link Instruments MSO-19 */
    { USB_DEVICE(0x3195, 0xF280) }, /* Link Instruments MSO-28 */
diff --git a/drivers/usb/serial/mos7840.c b/drivers/usb/serial/mos7840.c
index 31ca5d925b36..579595a78257 100644
--- a/drivers/usb/serial/mos7840.c
+++ b/drivers/usb/serial/mos7840.c
@@ -126,7 +126,6 @@
 #define BANDB_DEVICE_ID_USOPTL4_2P       0xBC02
 #define BANDB_DEVICE_ID_USOPTL4_4        0xAC44
 #define BANDB_DEVICE_ID_USOPTL4_4P       0xBC03
-#define BANDB_DEVICE_ID_USOPTL2_4        0xAC24
/* This driver also supports
  * ATEN UC2324 device using Moschip MCS7840
@@ -207,7 +206,6 @@ static const struct usb_device_id id_table[] = {
    {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_2P)},
    {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4)},
    {USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL4_4P)},
-	{USB_DEVICE(USB_VENDOR_ID_BANDB, BANDB_DEVICE_ID_USOPTL2_4)},
    {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2324)},
    {USB_DEVICE(USB_VENDOR_ID_ATENINTL, ATENINTL_DEVICE_ID_UC2322)},
    {USB_DEVICE(USB_VENDOR_ID_MOXA, MOXA_DEVICE_ID_2210)},
diff --git a/drivers/usb/serial/option.c b/drivers/usb/serial/option.c
index 02ded56bcbc6..ec8ad931f41e 100644
--- a/drivers/usb/serial/option.c
+++ b/drivers/usb/serial/option.c
@@ -1187,6 +1187,14 @@ static const struct usb_device_id option_ids[] = {
      .driver_info = NCTRL(0) | RSVD(1) },
    { USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1056, 0xff),	/* Telit FD980 */
      .driver_info = NCTRL(2) | RSVD(3) },
+	{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1060, 0xff),	/* Telit LN920 (rmnet) */
+	  .driver_info = NCTRL(0) | RSVD(1) | RSVD(2) },
+	{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1061, 0xff),	/* Telit LN920 (MBIM) */
+	  .driver_info = NCTRL(0) | RSVD(1) },
+	{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1062, 0xff),	/* Telit LN920 (RNDIS) */
+	  .driver_info = NCTRL(2) | RSVD(3) },
+	{ USB_DEVICE_INTERFACE_CLASS(TELIT_VENDOR_ID, 0x1063, 0xff),	/* Telit LN920 (ECM) */
+	  .driver_info = NCTRL(0) | RSVD(1) },
    { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910),
      .driver_info = NCTRL(0) | RSVD(1) | RSVD(3) },
    { USB_DEVICE(TELIT_VENDOR_ID, TELIT_PRODUCT_ME910_DUAL_MODEM),
@@ -1632,7 +1640,6 @@ static const struct usb_device_id option_ids[] = {
    { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0060, 0xff, 0xff, 0xff) },
    { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0070, 0xff, 0xff, 0xff) },
    { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0073, 0xff, 0xff, 0xff) },
-	{ USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0094, 0xff, 0xff, 0xff) },
    { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0130, 0xff, 0xff, 0xff),
      .driver_info = RSVD(1) },
    { USB_DEVICE_AND_INTERFACE_INFO(ZTE_VENDOR_ID, 0x0133, 0xff, 0xff, 0xff),
@@ -2052,6 +2059,8 @@ static const struct usb_device_id option_ids[] = {
      .driver_info = RSVD(0) | RSVD(1) | RSVD(6) },
    { USB_DEVICE(0x0489, 0xe0b5),						/* Foxconn T77W968 ESIM */
      .driver_info = RSVD(0) | RSVD(1) | RSVD(6) },
+	{ USB_DEVICE_INTERFACE_CLASS(0x0489, 0xe0db, 0xff),			/* Foxconn T99W265 MBIM */
+	  .driver_info = RSVD(3) },
    { USB_DEVICE(0x1508, 0x1001),						/* Fibocom NL668 (IOT version) */
      .driver_info = RSVD(4) | RSVD(5) | RSVD(6) },
    { USB_DEVICE(0x2cb7, 0x0104),						/* Fibocom NL678 series */
diff --git a/drivers/usb/storage/unusual_devs.h b/drivers/usb/storage/unusual_devs.h
index 4a94effb64f7..ed94496cdc5b 100644
--- a/drivers/usb/storage/unusual_devs.h
+++ b/drivers/usb/storage/unusual_devs.h
@@ -435,9 +435,16 @@ UNUSUAL_DEV(  0x04cb, 0x0100, 0x0000, 0x2210,
    	USB_SC_UFI, USB_PR_DEVICE, NULL, US_FL_FIX_INQUIRY | US_FL_SINGLE_LUN),
/*
- * Reported by Ondrej Zary linux@rainbow-software.org
+ * Reported by Ondrej Zary linux@zary.sk
  * The device reports one sector more and breaks when that sector is accessed
+ * Firmwares older than 2.6c (the latest one and the only that claims Linux
+ * support) have also broken tag handling
  */
+UNUSUAL_DEV(  0x04ce, 0x0002, 0x0000, 0x026b,
+		"ScanLogic",
+		"SL11R-IDE",
+		USB_SC_DEVICE, USB_PR_DEVICE, NULL,
+		US_FL_FIX_CAPACITY | US_FL_BULK_IGNORE_TAG),
 UNUSUAL_DEV(  0x04ce, 0x0002, 0x026c, 0x026c,
    	"ScanLogic",
    	"SL11R-IDE",
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index af78de9ef036..a4a76f1d275c 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -2960,9 +2960,10 @@ cifs_match_super(struct super_block *sb, void *data)
    spin_lock(&cifs_tcp_ses_lock);
    cifs_sb = CIFS_SB(sb);
    tlink = cifs_get_tlink(cifs_sb_master_tlink(cifs_sb));
-	if (IS_ERR(tlink)) {
+	if (tlink == NULL) {
+		/* can not match superblock if tlink were ever null */
    	spin_unlock(&cifs_tcp_ses_lock);
-		return rc;
+		return 0;
    }
    tcon = tlink_tcon(tlink);
    ses = tcon->ses;
diff --git a/fs/ext4/dir.c b/fs/ext4/dir.c
index 6b3a32f75dad..ae495dbafb18 100644
--- a/fs/ext4/dir.c
+++ b/fs/ext4/dir.c
@@ -531,7 +531,7 @@ static int ext4_dx_readdir(struct file *file, struct dir_context *ctx)
    struct dir_private_info *info = file->private_data;
    struct inode *inode = file_inode(file);
    struct fname *fname;
-	int	ret;
+	int ret = 0;
if (!info) {
    	info = ext4_htree_create_dir_info(file, ctx->pos);
@@ -579,7 +579,7 @@ static int ext4_dx_readdir(struct file *file, struct dir_context *ctx)
    					   info->curr_minor_hash,
    					   &info->next_hash);
    		if (ret < 0)
-				return ret;
+				goto finished;
    		if (ret == 0) {
    			ctx->pos = ext4_get_htree_eof(file);
    			break;
@@ -610,7 +610,7 @@ static int ext4_dx_readdir(struct file *file, struct dir_context *ctx)
    }
 finished:
    info->last_pos = ctx->pos;
-	return 0;
+	return ret < 0 ? ret : 0;
 }
static int ext4_dir_open(struct inode * inode, struct file * filp)
diff --git a/fs/ocfs2/dlmglue.c b/fs/ocfs2/dlmglue.c
index 2c3e975126b3..5219f4352ad3 100644
--- a/fs/ocfs2/dlmglue.c
+++ b/fs/ocfs2/dlmglue.c
@@ -3704,7 +3704,7 @@ static int ocfs2_data_convert_worker(struct ocfs2_lock_res *lockres,
    	oi = OCFS2_I(inode);
    	oi->ip_dir_lock_gen++;
    	mlog(0, "generation: %u\n", oi->ip_dir_lock_gen);
-		goto out;
+		goto out_forget;
    }
if (!S_ISREG(inode->i_mode))
@@ -3735,6 +3735,7 @@ static int ocfs2_data_convert_worker(struct ocfs2_lock_res *lockres,
    	filemap_fdatawait(mapping);
    }
+out_forget:
    forget_all_cached_acls(inode);
out:
diff --git a/fs/qnx4/dir.c b/fs/qnx4/dir.c
index 781056a0480f..b3bde1826001 100644
--- a/fs/qnx4/dir.c
+++ b/fs/qnx4/dir.c
@@ -14,13 +14,48 @@
 #include <linux/buffer_head.h>
 #include "qnx4.h"
+/*
+ * A qnx4 directory entry is an inode entry or link info
+ * depending on the status field in the last byte. The
+ * first byte is where the name start either way, and a
+ * zero means it's empty.
+ *
+ * Also, due to a bug in gcc, we don't want to use the
+ * real (differently sized) name arrays in the inode and
+ * link entries, but always the 'de_name[]' one in the
+ * fake struct entry.
+ *
+ * See
+ *
+ *   https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99578#c6
+ *
+ * for details, but basically gcc will take the size of the
+ * 'name' array from one of the used union entries randomly.
+ *
+ * This use of 'de_name[]' (48 bytes) avoids the false positive
+ * warnings that would happen if gcc decides to use 'inode.di_name'
+ * (16 bytes) even when the pointer and size were to come from
+ * 'link.dl_name' (48 bytes).
+ *
+ * In all cases the actual name pointer itself is the same, it's
+ * only the gcc internal 'what is the size of this field' logic
+ * that can get confused.
+ */
+union qnx4_directory_entry {
+	struct {
+		const char de_name[48];
+		u8 de_pad[15];
+		u8 de_status;
+	};
+	struct qnx4_inode_entry inode;
+	struct qnx4_link_info link;
+};
+
 static int qnx4_readdir(struct file *file, struct dir_context *ctx)
 {
    struct inode *inode = file_inode(file);
    unsigned int offset;
    struct buffer_head *bh;
-	struct qnx4_inode_entry *de;
-	struct qnx4_link_info *le;
    unsigned long blknum;
    int ix, ino;
    int size;
@@ -37,27 +72,27 @@ static int qnx4_readdir(struct file *file, struct dir_context *ctx)
    	}
    	ix = (ctx->pos >> QNX4_DIR_ENTRY_SIZE_BITS) % QNX4_INODES_PER_BLOCK;
    	for (; ix < QNX4_INODES_PER_BLOCK; ix++, ctx->pos += QNX4_DIR_ENTRY_SIZE) {
+			union qnx4_directory_entry *de;
+
    		offset = ix * QNX4_DIR_ENTRY_SIZE;
-			de = (struct qnx4_inode_entry *) (bh->b_data + offset);
-			if (!de->di_fname[0])
+			de = (union qnx4_directory_entry *) (bh->b_data + offset);
+
+			if (!de->de_name[0])
    			continue;
-			if (!(de->di_status & (QNX4_FILE_USED|QNX4_FILE_LINK)))
+			if (!(de->de_status & (QNX4_FILE_USED|QNX4_FILE_LINK)))
    			continue;
-			if (!(de->di_status & QNX4_FILE_LINK))
-				size = QNX4_SHORT_NAME_MAX;
-			else
-				size = QNX4_NAME_MAX;
-			size = strnlen(de->di_fname, size);
-			QNX4DEBUG((KERN_INFO "qnx4_readdir:%.*s\n", size, de->di_fname));
-			if (!(de->di_status & QNX4_FILE_LINK))
+			if (!(de->de_status & QNX4_FILE_LINK)) {
+				size = sizeof(de->inode.di_fname);
    			ino = blknum * QNX4_INODES_PER_BLOCK + ix - 1;
-			else {
-				le  = (struct qnx4_link_info*)de;
-				ino = ( le32_to_cpu(le->dl_inode_blk) - 1 ) *
+			} else {
+				size = sizeof(de->link.dl_fname);
+				ino = ( le32_to_cpu(de->link.dl_inode_blk) - 1 ) *
    				QNX4_INODES_PER_BLOCK +
-					le->dl_inode_ndx;
+					de->link.dl_inode_ndx;
    		}
-			if (!dir_emit(ctx, de->di_fname, size, ino, DT_UNKNOWN)) {
+			size = strnlen(de->de_name, size);
+			QNX4DEBUG((KERN_INFO "qnx4_readdir:%.*s\n", size, name));
+			if (!dir_emit(ctx, de->de_name, size, ino, DT_UNKNOWN)) {
    			brelse(bh);
    			return 0;
    		}
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index 824b1b97f989..10937279b152 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -233,6 +233,8 @@ void ftrace_likely_update(struct ftrace_branch_data *f, int val, int expect);
     (typeof(ptr)) (__ptr + (off)); })
 #endif
+#define absolute_pointer(val)	RELOC_HIDE((void *)(val), 0)
+
 #ifndef OPTIMIZER_HIDE_VAR
 #define OPTIMIZER_HIDE_VAR(var) barrier()
 #endif
diff --git a/include/linux/cred.h b/include/linux/cred.h
index 4f614042214b..09debf2e047f 100644
--- a/include/linux/cred.h
+++ b/include/linux/cred.h
@@ -234,7 +234,7 @@ static inline struct cred *get_new_cred(struct cred *cred)
  * @cred: The credentials to reference
  *
  * Get a reference on the specified set of credentials.  The caller must
- * release the reference.
+ * release the reference.  If %NULL is passed, it is returned with no action.
  *
  * This is used to deal with a committed set of credentials.  Although the
  * pointer is const, this will temporarily discard the const and increment the
@@ -245,6 +245,8 @@ static inline struct cred *get_new_cred(struct cred *cred)
 static inline const struct cred *get_cred(const struct cred *cred)
 {
    struct cred *nonconst_cred = (struct cred *) cred;
+	if (!cred)
+		return cred;
    validate_creds(cred);
    nonconst_cred->non_rcu = 0;
    return get_new_cred(nonconst_cred);
@@ -255,7 +257,7 @@ static inline const struct cred *get_cred(const struct cred *cred)
  * @cred: The credentials to release
  *
  * Release a reference to a set of credentials, deleting them when the last ref
- * is released.
+ * is released.  If %NULL is passed, nothing is done.
  *
  * This takes a const pointer to a set of credentials because the credentials
  * on task_struct are attached by const pointers to prevent accidental
@@ -265,9 +267,11 @@ static inline void put_cred(const struct cred *_cred)
 {
    struct cred *cred = (struct cred *) _cred;
-	validate_creds(cred);
-	if (atomic_dec_and_test(&(cred)->usage))
-		__put_cred(cred);
+	if (cred) {
+		validate_creds(cred);
+		if (atomic_dec_and_test(&(cred)->usage))
+			__put_cred(cred);
+	}
 }
/**
diff --git a/kernel/sched/cpufreq_schedutil.c b/kernel/sched/cpufreq_schedutil.c
index cb771c76682e..f85802b55197 100644
--- a/kernel/sched/cpufreq_schedutil.c
+++ b/kernel/sched/cpufreq_schedutil.c
@@ -353,9 +353,17 @@ static struct attribute *sugov_attributes[] = {
    NULL
 };
+static void sugov_tunables_free(struct kobject *kobj)
+{
+	struct gov_attr_set *attr_set = container_of(kobj, struct gov_attr_set, kobj);
+
+	kfree(to_sugov_tunables(attr_set));
+}
+
 static struct kobj_type sugov_tunables_ktype = {
    .default_attrs = sugov_attributes,
    .sysfs_ops = &governor_sysfs_ops,
+	.release = &sugov_tunables_free,
 };
/********************** cpufreq governor interface *********************/
@@ -397,12 +405,10 @@ static struct sugov_tunables *sugov_tunables_alloc(struct sugov_policy *sg_polic
    return tunables;
 }
-static void sugov_tunables_free(struct sugov_tunables *tunables)
+static void sugov_clear_global_tunables(void)
 {
    if (!have_governor_per_policy())
    	global_tunables = NULL;
-
-	kfree(tunables);
 }
static int sugov_init(struct cpufreq_policy *policy)
@@ -462,7 +468,7 @@ static int sugov_init(struct cpufreq_policy *policy)
fail:
    policy->governor_data = NULL;
-	sugov_tunables_free(tunables);
+	sugov_clear_global_tunables();
free_sg_policy:
    mutex_unlock(&global_tunables_lock);
@@ -485,7 +491,7 @@ static void sugov_exit(struct cpufreq_policy *policy)
    count = gov_attr_set_put(&tunables->attr_set, &sg_policy->tunables_hook);
    policy->governor_data = NULL;
    if (!count)
-		sugov_tunables_free(tunables);
+		sugov_clear_global_tunables();
mutex_unlock(&global_tunables_lock);
diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c
index 88eb9261c7b5..056107787f4a 100644
--- a/kernel/trace/blktrace.c
+++ b/kernel/trace/blktrace.c
@@ -1584,6 +1584,14 @@ static int blk_trace_remove_queue(struct request_queue *q)
    if (bt == NULL)
    	return -EINVAL;
+	if (bt->trace_state == Blktrace_running) {
+		bt->trace_state = Blktrace_stopped;
+		spin_lock_irq(&running_trace_lock);
+		list_del_init(&bt->running_list);
+		spin_unlock_irq(&running_trace_lock);
+		relay_flush(bt->rchan);
+	}
+
    put_probe_ref();
    synchronize_rcu();
    blk_trace_free(bt);
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index 79249a44e4a3..860ab2e6544c 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -886,7 +886,7 @@ int udp_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
    __be16 dport;
    u8  tos;
    int err, is_udplite = IS_UDPLITE(sk);
-	int corkreq = up->corkflag || msg->msg_flags&MSG_MORE;
+	int corkreq = READ_ONCE(up->corkflag) || msg->msg_flags&MSG_MORE;
    int (*getfrag)(void *, char *, int, int, int, struct sk_buff *);
    struct sk_buff *skb;
    struct ip_options_data opt_copy;
@@ -1167,7 +1167,7 @@ int udp_sendpage(struct sock *sk, struct page *page, int offset,
    }
up->len += size;
-	if (!(up->corkflag || (flags&MSG_MORE)))
+	if (!(READ_ONCE(up->corkflag) || (flags&MSG_MORE)))
    	ret = udp_push_pending_frames(sk);
    if (!ret)
    	ret = size;
@@ -2034,9 +2034,9 @@ int udp_lib_setsockopt(struct sock *sk, int level, int optname,
    switch (optname) {
    case UDP_CORK:
    	if (val != 0) {
-			up->corkflag = 1;
+			WRITE_ONCE(up->corkflag, 1);
    	} else {
-			up->corkflag = 0;
+			WRITE_ONCE(up->corkflag, 0);
    		lock_sock(sk);
    		push_pending_frames(sk);
    		release_sock(sk);
@@ -2143,7 +2143,7 @@ int udp_lib_getsockopt(struct sock *sk, int level, int optname,
switch (optname) {
    case UDP_CORK:
-		val = up->corkflag;
+		val = READ_ONCE(up->corkflag);
    	break;
case UDP_ENCAP:
diff --git a/net/ipv6/udp.c b/net/ipv6/udp.c
index 3a876a2fdd82..ab81fb04d967 100644
--- a/net/ipv6/udp.c
+++ b/net/ipv6/udp.c
@@ -1028,7 +1028,7 @@ int udpv6_sendmsg(struct sock *sk, struct msghdr *msg, size_t len)
    struct ipcm6_cookie ipc6;
    int addr_len = msg->msg_namelen;
    int ulen = len;
-	int corkreq = up->corkflag || msg->msg_flags&MSG_MORE;
+	int corkreq = READ_ONCE(up->corkflag) || msg->msg_flags&MSG_MORE;
    int err;
    int connected = 0;
    int is_udplite = IS_UDPLITE(sk);
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index 48d0dd0beaa5..b6942b717a59 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -2064,7 +2064,11 @@ static bool ieee80211_parse_tx_radiotap(struct ieee80211_local *local,
    		}
vht_mcs = iterator.this_arg[4] >> 4;
+			if (vht_mcs > 11)
+				vht_mcs = 0;
    		vht_nss = iterator.this_arg[4] & 0xF;
+			if (!vht_nss || vht_nss > 8)
+				vht_nss = 1;
    		break;
/*
diff --git a/net/mac80211/wpa.c b/net/mac80211/wpa.c
index 7819a2507d39..b4d67ec50e63 100644
--- a/net/mac80211/wpa.c
+++ b/net/mac80211/wpa.c
@@ -514,6 +514,9 @@ ieee80211_crypto_ccmp_decrypt(struct ieee80211_rx_data *rx,
    		return RX_DROP_UNUSABLE;
    }
+	/* reload hdr - skb might have been reallocated */
+	hdr = (void *)rx->skb->data;
+
    data_len = skb->len - hdrlen - IEEE80211_CCMP_HDR_LEN - mic_len;
    if (!rx->sta || data_len < 0)
    	return RX_DROP_UNUSABLE;
@@ -744,6 +747,9 @@ ieee80211_crypto_gcmp_decrypt(struct ieee80211_rx_data *rx)
    		return RX_DROP_UNUSABLE;
    }
+	/* reload hdr - skb might have been reallocated */
+	hdr = (void *)rx->skb->data;
+
    data_len = skb->len - hdrlen - IEEE80211_GCMP_HDR_LEN - mic_len;
    if (!rx->sta || data_len < 0)
    	return RX_DROP_UNUSABLE;
diff --git a/net/netfilter/ipset/ip_set_hash_gen.h b/net/netfilter/ipset/ip_set_hash_gen.h
index a4bd2d3a4821..6641c3e43e2f 100644
--- a/net/netfilter/ipset/ip_set_hash_gen.h
+++ b/net/netfilter/ipset/ip_set_hash_gen.h
@@ -102,11 +102,11 @@ htable_size(u8 hbits)
 {
    size_t hsize;
-	/* We must fit both into u32 in jhash and size_t */
+	/* We must fit both into u32 in jhash and INT_MAX in kvmalloc_node() */
    if (hbits > 31)
    	return 0;
    hsize = jhash_size(hbits);
-	if ((((size_t)-1) - sizeof(struct htable)) / sizeof(struct hbucket *)
+	if ((INT_MAX - sizeof(struct htable)) / sizeof(struct hbucket *)
        < hsize)
    	return 0;
diff --git a/net/netfilter/ipvs/ip_vs_conn.c b/net/netfilter/ipvs/ip_vs_conn.c
index 096a45103f14..ecde2102d1ad 100644
--- a/net/netfilter/ipvs/ip_vs_conn.c
+++ b/net/netfilter/ipvs/ip_vs_conn.c
@@ -1406,6 +1406,10 @@ int __init ip_vs_conn_init(void)
    int idx;
/* Compute size and mask */
+	if (ip_vs_conn_tab_bits < 8 || ip_vs_conn_tab_bits > 20) {
+		pr_info("conn_tab_bits not in [8, 20]. Using default value\n");
+		ip_vs_conn_tab_bits = CONFIG_IP_VS_TAB_BITS;
+	}
    ip_vs_conn_tab_size = 1 << ip_vs_conn_tab_bits;
    ip_vs_conn_tab_mask = ip_vs_conn_tab_size - 1;

    

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Re: Linux 4.9.285