Merge branch 'sched/urgent' into sched/core

Merge in the current fixes branch, we are going to apply dependent patches.

Signed-off-by: Ingo Molnar <mingo@kernel.org>

10 files changed, 28 insertions, 14 deletions

diff --git a/arch/s390/Kconfig b/arch/s390/Kconfig
index 49ebfb62c86a..f5ab543396da 100644
--- a/arch/s390/Kconfig
+++ b/arch/s390/Kconfig
@@ -123,6 +123,7 @@ config S390
 	select GENERIC_TIME_VSYSCALL
 	select GENERIC_CLOCKEVENTS
 	select KTIME_SCALAR if 32BIT
+	select HAVE_ARCH_SECCOMP_FILTER
 
 config SCHED_OMIT_FRAME_POINTER
 	def_bool y
diff --git a/arch/s390/include/asm/elf.h b/arch/s390/include/asm/elf.h
index 32e8449640fa..9b94a160fe7f 100644
--- a/arch/s390/include/asm/elf.h
+++ b/arch/s390/include/asm/elf.h
@@ -180,7 +180,8 @@ extern char elf_platform[];
 #define ELF_PLATFORM (elf_platform)
 
 #ifndef CONFIG_64BIT
-#define SET_PERSONALITY(ex) set_personality(PER_LINUX)
+#define SET_PERSONALITY(ex) \
+	set_personality(PER_LINUX | (current->personality & (~PER_MASK)))
 #else /* CONFIG_64BIT */
 #define SET_PERSONALITY(ex)					\
 do {								\
diff --git a/arch/s390/include/asm/posix_types.h b/arch/s390/include/asm/posix_types.h
index 7bcc14e395f0..bf2a2ad2f800 100644
--- a/arch/s390/include/asm/posix_types.h
+++ b/arch/s390/include/asm/posix_types.h
@@ -13,6 +13,7 @@
  */
 
 typedef unsigned long   __kernel_size_t;
+typedef long            __kernel_ssize_t;
 #define __kernel_size_t __kernel_size_t
 
 typedef unsigned short	__kernel_old_dev_t;
@@ -25,7 +26,6 @@ typedef unsigned short  __kernel_mode_t;
 typedef unsigned short  __kernel_ipc_pid_t;
 typedef unsigned short  __kernel_uid_t;
 typedef unsigned short  __kernel_gid_t;
-typedef int             __kernel_ssize_t;
 typedef int             __kernel_ptrdiff_t;
 
 #else /* __s390x__ */
@@ -35,7 +35,6 @@ typedef unsigned int    __kernel_mode_t;
 typedef int             __kernel_ipc_pid_t;
 typedef unsigned int    __kernel_uid_t;
 typedef unsigned int    __kernel_gid_t;
-typedef long            __kernel_ssize_t;
 typedef long            __kernel_ptrdiff_t;
 typedef unsigned long   __kernel_sigset_t;      /* at least 32 bits */
 
diff --git a/arch/s390/include/asm/smp.h b/arch/s390/include/asm/smp.h
index a0a8340daafa..ce26ac3cb162 100644
--- a/arch/s390/include/asm/smp.h
+++ b/arch/s390/include/asm/smp.h
@@ -44,6 +44,7 @@ static inline void smp_call_online_cpu(void (*func)(void *), void *data)
 }
 
 static inline int smp_find_processor_id(int address) { return 0; }
+static inline int smp_store_status(int cpu) { return 0; }
 static inline int smp_vcpu_scheduled(int cpu) { return 1; }
 static inline void smp_yield_cpu(int cpu) { }
 static inline void smp_yield(void) { }
diff --git a/arch/s390/include/asm/sparsemem.h b/arch/s390/include/asm/sparsemem.h
index 0fb34027d3f6..a60d085ddb4d 100644
--- a/arch/s390/include/asm/sparsemem.h
+++ b/arch/s390/include/asm/sparsemem.h
@@ -4,13 +4,11 @@
 #ifdef CONFIG_64BIT
 
 #define SECTION_SIZE_BITS	28
-#define MAX_PHYSADDR_BITS	46
 #define MAX_PHYSMEM_BITS	46
 
 #else
 
 #define SECTION_SIZE_BITS	25
-#define MAX_PHYSADDR_BITS	31
 #define MAX_PHYSMEM_BITS	31
 
 #endif /* CONFIG_64BIT */
diff --git a/arch/s390/include/asm/syscall.h b/arch/s390/include/asm/syscall.h
index fb214dd9b7e0..fe7b99759e12 100644
--- a/arch/s390/include/asm/syscall.h
+++ b/arch/s390/include/asm/syscall.h
@@ -12,6 +12,7 @@
 #ifndef _ASM_SYSCALL_H
 #define _ASM_SYSCALL_H	1
 
+#include <linux/audit.h>
 #include <linux/sched.h>
 #include <linux/err.h>
 #include <asm/ptrace.h>
@@ -87,4 +88,13 @@ static inline void syscall_set_arguments(struct task_struct *task,
 		regs->orig_gpr2 = args[0];
 }
 
+static inline int syscall_get_arch(struct task_struct *task,
+				   struct pt_regs *regs)
+{
+#ifdef CONFIG_COMPAT
+	if (test_tsk_thread_flag(task, TIF_31BIT))
+		return AUDIT_ARCH_S390;
+#endif
+	return sizeof(long) == 8 ? AUDIT_ARCH_S390X : AUDIT_ARCH_S390;
+}
 #endif	/* _ASM_SYSCALL_H */
diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c
index d1225089a4bb..f606d935f495 100644
--- a/arch/s390/kernel/compat_linux.c
+++ b/arch/s390/kernel/compat_linux.c
@@ -620,7 +620,6 @@ asmlinkage unsigned long old32_mmap(struct mmap_arg_struct_emu31 __user *arg)
 		return -EFAULT;
 	if (a.offset & ~PAGE_MASK)
 		return -EINVAL;
-	a.addr = (unsigned long) compat_ptr(a.addr);
 	return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd,
 			      a.offset >> PAGE_SHIFT);
 }
@@ -631,7 +630,6 @@ asmlinkage long sys32_mmap2(struct mmap_arg_struct_emu31 __user *arg)
 
 	if (copy_from_user(&a, arg, sizeof(a)))
 		return -EFAULT;
-	a.addr = (unsigned long) compat_ptr(a.addr);
 	return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd, a.offset);
 }
 
diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S
index e835d6d5b7fd..2d82cfcbce5b 100644
--- a/arch/s390/kernel/compat_wrapper.S
+++ b/arch/s390/kernel/compat_wrapper.S
@@ -1635,7 +1635,7 @@ ENTRY(compat_sys_process_vm_readv_wrapper)
 	llgfr	%r6,%r6			# unsigned long
 	llgf	%r0,164(%r15)		# unsigned long
 	stg	%r0,160(%r15)
-	jg	sys_process_vm_readv
+	jg	compat_sys_process_vm_readv
 
 ENTRY(compat_sys_process_vm_writev_wrapper)
 	lgfr	%r2,%r2			# compat_pid_t
@@ -1645,4 +1645,4 @@ ENTRY(compat_sys_process_vm_writev_wrapper)
 	llgfr	%r6,%r6			# unsigned long
 	llgf	%r0,164(%r15)		# unsigned long
 	stg	%r0,160(%r15)
-	jg	sys_process_vm_writev
+	jg	compat_sys_process_vm_writev
diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c
index f4eb37680b91..e4be113fbac6 100644
--- a/arch/s390/kernel/ptrace.c
+++ b/arch/s390/kernel/ptrace.c
@@ -719,7 +719,11 @@ asmlinkage long do_syscall_trace_enter(struct pt_regs *regs)
 	long ret = 0;
 
 	/* Do the secure computing check first. */
-	secure_computing_strict(regs->gprs[2]);
+	if (secure_computing(regs->gprs[2])) {
+		/* seccomp failures shouldn't expose any additional code. */
+		ret = -1;
+		goto out;
+	}
 
 	/*
 	 * The sysc_tracesys code in entry.S stored the system
@@ -745,6 +749,7 @@ asmlinkage long do_syscall_trace_enter(struct pt_regs *regs)
 			    regs->gprs[2], regs->orig_gpr2,
 			    regs->gprs[3], regs->gprs[4],
 			    regs->gprs[5]);
+out:
 	return ret ?: regs->gprs[2];
 }
 
diff --git a/arch/s390/kernel/sys_s390.c b/arch/s390/kernel/sys_s390.c
index b4a29eee41b8..d0964d22adb5 100644
--- a/arch/s390/kernel/sys_s390.c
+++ b/arch/s390/kernel/sys_s390.c
@@ -81,11 +81,12 @@ SYSCALL_DEFINE1(s390_personality, unsigned int, personality)
 {
 	unsigned int ret;
 
-	if (current->personality == PER_LINUX32 && personality == PER_LINUX)
-		personality = PER_LINUX32;
+	if (personality(current->personality) == PER_LINUX32 &&
+	    personality(personality) == PER_LINUX)
+		personality |= PER_LINUX32;
 	ret = sys_personality(personality);
-	if (ret == PER_LINUX32)
-		ret = PER_LINUX;
+	if (personality(ret) == PER_LINUX32)
+		ret &= ~PER_LINUX32;
 
 	return ret;
 }