Merge android-4.4.111 (f851888) into msm-4.4

* refs/heads/tmp-f851888
  Linux 4.4.111
  Fix build error in vma.c
  Map the vsyscall page with _PAGE_USER
  proc: much faster /proc/vmstat
  module: Issue warnings when tainting kernel
  module: keep percpu symbols in module's symtab
  genksyms: Handle string literals with spaces in reference files
  x86/tlb: Drop the _GPL from the cpu_tlbstate export
  parisc: Fix alignment of pa_tlb_lock in assembly on 32-bit SMP kernel
  x86/microcode/AMD: Add support for fam17h microcode loading
  Input: elantech - add new icbody type 15
  ARC: uaccess: dont use "l" gcc inline asm constraint modifier
  kernel/signal.c: remove the no longer needed SIGNAL_UNKILLABLE check in complete_signal()
  kernel/signal.c: protect the SIGNAL_UNKILLABLE tasks from !sig_kernel_only() signals
  kernel/signal.c: protect the traced SIGNAL_UNKILLABLE tasks from SIGKILL
  kernel: make groups_sort calling a responsibility group_info allocators
  fscache: Fix the default for fscache_maybe_release_page()
  sunxi-rsb: Include OF based modalias in device uevent
  crypto: pcrypt - fix freeing pcrypt instances
  crypto: chacha20poly1305 - validate the digest size
  crypto: n2 - cure use after free
  kernel/acct.c: fix the acct->needcheck check in check_free_space()
  x86/kasan: Write protect kasan zero shadow
  clocksource: arch_timer: make virtual counter access configurable
  arm64: issue isb when trapping CNTVCT_EL0 access
  BACKPORT: arm64: Add CNTFRQ_EL0 trap handler
  BACKPORT: arm64: Add CNTVCT_EL0 trap handler
  ANDROID: sdcardfs: Fix missing break on default_normal
  ANDROID: usb: f_fs: Prevent gadget unbind if it is already unbound
  arm64: Kconfig: Reword UNMAP_KERNEL_AT_EL0 kconfig entry
  arm64: use RET instruction for exiting the trampoline
  FROMLIST: arm64: kaslr: Put kernel vectors address in separate data page
  FROMLIST: arm64: mm: Introduce TTBR_ASID_MASK for getting at the ASID in the TTBR
  FROMLIST: arm64: Kconfig: Add CONFIG_UNMAP_KERNEL_AT_EL0
  FROMLIST: arm64: entry: Add fake CPU feature for unmapping the kernel at EL0
  FROMLIST: arm64: tls: Avoid unconditional zeroing of tpidrro_el0 for native tasks
  FROMLIST: arm64: erratum: Work around Falkor erratum #E1003 in trampoline code
  FROMLIST: arm64: entry: Hook up entry trampoline to exception vectors
  FROMLIST: arm64: entry: Explicitly pass exception level to kernel_ventry macro
  FROMLIST: arm64: mm: Map entry trampoline into trampoline and kernel page tables
  FROMLIST: arm64: entry: Add exception trampoline page for exceptions from EL0
  FROMLIST: arm64: mm: Invalidate both kernel and user ASIDs when performing TLBI
  FROMLIST: arm64: mm: Add arm64_kernel_unmapped_at_el0 helper
  FROMLIST: arm64: mm: Allocate ASIDs in pairs
  FROMLIST: arm64: mm: Fix and re-enable ARM64_SW_TTBR0_PAN
  FROMLIST: arm64: mm: Move ASID from TTBR0 to TTBR1
  FROMLIST: arm64: mm: Temporarily disable ARM64_SW_TTBR0_PAN
  FROMLIST: arm64: mm: Use non-global mappings for kernel space
  UPSTREAM: arm64: factor out entry stack manipulation
  UPSTREAM: arm64: tlbflush.h: add __tlbi() macro

Conflicts:
	arch/arm64/include/asm/cpufeature.h
	arch/arm64/kernel/asm-offsets.c
	arch/arm64/kernel/cpufeature.c
	arch/arm64/kernel/entry.S
	arch/arm64/kernel/vmlinux.lds.S
	drivers/clocksource/Kconfig
	drivers/clocksource/arm_arch_timer.c
	drivers/usb/gadget/function/f_fs.c

Change-Id: I41e84762e30c9a7b1e283850c3f780f3dbe86f44
Signed-off-by: Srinivasarao P <spathi@codeaurora.org>

5 files changed, 36 insertions, 16 deletions

diff --git a/kernel/acct.c b/kernel/acct.c
index 74963d192c5d..37f1dc696fbd 100644
--- a/kernel/acct.c
+++ b/kernel/acct.c
@@ -99,7 +99,7 @@ static int check_free_space(struct bsd_acct_struct *acct)
 {
 	struct kstatfs sbuf;
 
-	if (time_is_before_jiffies(acct->needcheck))
+	if (time_is_after_jiffies(acct->needcheck))
 		goto out;
 
 	/* May block */
diff --git a/kernel/groups.c b/kernel/groups.c
index 74d431d25251..5ea9847f172f 100644
--- a/kernel/groups.c
+++ b/kernel/groups.c
@@ -101,7 +101,7 @@ static int groups_from_user(struct group_info *group_info,
 }
 
 /* a simple Shell sort */
-static void groups_sort(struct group_info *group_info)
+void groups_sort(struct group_info *group_info)
 {
 	int base, max, stride;
 	int gidsetsize = group_info->ngroups;
@@ -128,6 +128,7 @@ static void groups_sort(struct group_info *group_info)
 		stride /= 3;
 	}
 }
+EXPORT_SYMBOL(groups_sort);
 
 /* a simple bsearch */
 int groups_search(const struct group_info *group_info, kgid_t grp)
@@ -159,7 +160,6 @@ int groups_search(const struct group_info *group_info, kgid_t grp)
 void set_groups(struct cred *new, struct group_info *group_info)
 {
 	put_group_info(new->group_info);
-	groups_sort(group_info);
 	get_group_info(group_info);
 	new->group_info = group_info;
 }
@@ -243,6 +243,7 @@ SYSCALL_DEFINE2(setgroups, int, gidsetsize, gid_t __user *, grouplist)
 		return retval;
 	}
 
+	groups_sort(group_info);
 	retval = set_current_groups(group_info);
 	put_group_info(group_info);
 
diff --git a/kernel/module.c b/kernel/module.c
index ea5ba3e8d472..71e277d72d37 100644
--- a/kernel/module.c
+++ b/kernel/module.c
@@ -2404,7 +2404,7 @@ static char elf_type(const Elf_Sym *sym, const struct load_info *info)
 	}
 	if (sym->st_shndx == SHN_UNDEF)
 		return 'U';
-	if (sym->st_shndx == SHN_ABS)
+	if (sym->st_shndx == SHN_ABS || sym->st_shndx == info->index.pcpu)
 		return 'a';
 	if (sym->st_shndx >= SHN_LORESERVE)
 		return '?';
@@ -2433,7 +2433,7 @@ static char elf_type(const Elf_Sym *sym, const struct load_info *info)
 }
 
 static bool is_core_symbol(const Elf_Sym *src, const Elf_Shdr *sechdrs,
-			unsigned int shnum)
+			unsigned int shnum, unsigned int pcpundx)
 {
 	const Elf_Shdr *sec;
 
@@ -2442,6 +2442,11 @@ static bool is_core_symbol(const Elf_Sym *src, const Elf_Shdr *sechdrs,
 	    || !src->st_name)
 		return false;
 
+#ifdef CONFIG_KALLSYMS_ALL
+	if (src->st_shndx == pcpundx)
+		return true;
+#endif
+
 	sec = sechdrs + src->st_shndx;
 	if (!(sec->sh_flags & SHF_ALLOC)
 #ifndef CONFIG_KALLSYMS_ALL
@@ -2479,7 +2484,8 @@ static void layout_symtab(struct module *mod, struct load_info *info)
 	/* Compute total space required for the core symbols' strtab. */
 	for (ndst = i = 0; i < nsrc; i++) {
 		if (i == 0 ||
-		    is_core_symbol(src+i, info->sechdrs, info->hdr->e_shnum)) {
+		    is_core_symbol(src+i, info->sechdrs, info->hdr->e_shnum,
+				   info->index.pcpu)) {
 			strtab_size += strlen(&info->strtab[src[i].st_name])+1;
 			ndst++;
 		}
@@ -2537,7 +2543,8 @@ static void add_kallsyms(struct module *mod, const struct load_info *info)
 	src = mod->kallsyms->symtab;
 	for (ndst = i = 0; i < mod->kallsyms->num_symtab; i++) {
 		if (i == 0 ||
-		    is_core_symbol(src+i, info->sechdrs, info->hdr->e_shnum)) {
+		    is_core_symbol(src+i, info->sechdrs, info->hdr->e_shnum,
+				   info->index.pcpu)) {
 			dst[ndst] = src[i];
 			dst[ndst++].st_name = s - mod->core_kallsyms.strtab;
 			s += strlcpy(s, &mod->kallsyms->strtab[src[i].st_name],
@@ -2887,8 +2894,12 @@ static int check_modinfo(struct module *mod, struct load_info *info, int flags)
 		return -ENOEXEC;
 	}
 
-	if (!get_modinfo(info, "intree"))
+	if (!get_modinfo(info, "intree")) {
+		if (!test_taint(TAINT_OOT_MODULE))
+			pr_warn("%s: loading out-of-tree module taints kernel.\n",
+				mod->name);
 		add_taint_module(mod, TAINT_OOT_MODULE, LOCKDEP_STILL_OK);
+	}
 
 	if (get_modinfo(info, "staging")) {
 		add_taint_module(mod, TAINT_CRAP, LOCKDEP_STILL_OK);
@@ -3053,6 +3064,8 @@ static int move_module(struct module *mod, struct load_info *info)
 
 static int check_module_license_and_versions(struct module *mod)
 {
+	int prev_taint = test_taint(TAINT_PROPRIETARY_MODULE);
+
 	/*
 	 * ndiswrapper is under GPL by itself, but loads proprietary modules.
 	 * Don't use add_taint_module(), as it would prevent ndiswrapper from
@@ -3071,6 +3084,9 @@ static int check_module_license_and_versions(struct module *mod)
 		add_taint_module(mod, TAINT_PROPRIETARY_MODULE,
 				 LOCKDEP_NOW_UNRELIABLE);
 
+	if (!prev_taint && test_taint(TAINT_PROPRIETARY_MODULE))
+		pr_warn("%s: module license taints kernel.\n", mod->name);
+
 #ifdef CONFIG_MODVERSIONS
 	if ((mod->num_syms && !mod->crcs)
 	    || (mod->num_gpl_syms && !mod->gpl_crcs)
diff --git a/kernel/signal.c b/kernel/signal.c
index 5d50ea899b6d..4a548c6a4118 100644
--- a/kernel/signal.c
+++ b/kernel/signal.c
@@ -72,7 +72,7 @@ static int sig_task_ignored(struct task_struct *t, int sig, bool force)
 	handler = sig_handler(t, sig);
 
 	if (unlikely(t->signal->flags & SIGNAL_UNKILLABLE) &&
-			handler == SIG_DFL && !force)
+	    handler == SIG_DFL && !(force && sig_kernel_only(sig)))
 		return 1;
 
 	return sig_handler_ignored(handler, sig);
@@ -88,13 +88,15 @@ static int sig_ignored(struct task_struct *t, int sig, bool force)
 	if (sigismember(&t->blocked, sig) || sigismember(&t->real_blocked, sig))
 		return 0;
 
-	if (!sig_task_ignored(t, sig, force))
-		return 0;
-
 	/*
-	 * Tracers may want to know about even ignored signals.
+	 * Tracers may want to know about even ignored signal unless it
+	 * is SIGKILL which can't be reported anyway but can be ignored
+	 * by SIGNAL_UNKILLABLE task.
 	 */
-	return !t->ptrace;
+	if (t->ptrace && sig != SIGKILL)
+		return 0;
+
+	return sig_task_ignored(t, sig, force);
 }
 
 /*
@@ -917,9 +919,9 @@ static void complete_signal(int sig, struct task_struct *p, int group)
 	 * then start taking the whole group down immediately.
 	 */
 	if (sig_fatal(p, sig) &&
-	    !(signal->flags & (SIGNAL_UNKILLABLE | SIGNAL_GROUP_EXIT)) &&
+	    !(signal->flags & SIGNAL_GROUP_EXIT) &&
 	    !sigismember(&t->real_blocked, sig) &&
-	    (sig == SIGKILL || !t->ptrace)) {
+	    (sig == SIGKILL || !p->ptrace)) {
 		/*
 		 * This signal will be fatal to the whole group.
 		 */
diff --git a/kernel/uid16.c b/kernel/uid16.c
index d58cc4d8f0d1..651aaa5221ec 100644
--- a/kernel/uid16.c
+++ b/kernel/uid16.c
@@ -190,6 +190,7 @@ SYSCALL_DEFINE2(setgroups16, int, gidsetsize, old_gid_t __user *, grouplist)
 		return retval;
 	}
 
+	groups_sort(group_info);
 	retval = set_current_groups(group_info);
 	put_group_info(group_info);