8 files changed, 110 insertions, 57 deletions

diff --git a/arch/mips/kernel/binfmt_elfn32.c b/arch/mips/kernel/binfmt_elfn32.c
index d8e2674a1543..4a9f1ecefaf2 100644
--- a/arch/mips/kernel/binfmt_elfn32.c
+++ b/arch/mips/kernel/binfmt_elfn32.c
@@ -103,8 +103,9 @@ jiffies_to_compat_timeval(unsigned long jiffies, struct compat_timeval *value)
          * one divide.
          */
         u64 nsec = (u64)jiffies * TICK_NSEC;
-        value->tv_sec = div_long_long_rem(nsec, NSEC_PER_SEC, &value->tv_usec);
-        value->tv_usec /= NSEC_PER_USEC;
+        long rem;
+        value->tv_sec = div_long_long_rem(nsec, NSEC_PER_SEC, &rem);
+        value->tv_usec = rem / NSEC_PER_USEC;
 }
 
 #define ELF_CORE_EFLAGS EF_MIPS_ABI2
diff --git a/arch/mips/kernel/binfmt_elfo32.c b/arch/mips/kernel/binfmt_elfo32.c
index cec5f327e360..e31813779895 100644
--- a/arch/mips/kernel/binfmt_elfo32.c
+++ b/arch/mips/kernel/binfmt_elfo32.c
@@ -105,8 +105,9 @@ jiffies_to_compat_timeval(unsigned long jiffies, struct compat_timeval *value)
          * one divide.
          */
         u64 nsec = (u64)jiffies * TICK_NSEC;
-        value->tv_sec = div_long_long_rem(nsec, NSEC_PER_SEC, &value->tv_usec);
-        value->tv_usec /= NSEC_PER_USEC;
+        long rem;
+        value->tv_sec = div_long_long_rem(nsec, NSEC_PER_SEC, &rem);
+        value->tv_usec = rem / NSEC_PER_USEC;
 }
 
 #undef ELF_CORE_COPY_REGS
diff --git a/arch/mips/kernel/linux32.c b/arch/mips/kernel/linux32.c
index 60353f5acc48..5f68b220c26d 100644
--- a/arch/mips/kernel/linux32.c
+++ b/arch/mips/kernel/linux32.c
@@ -230,6 +230,9 @@ sysn32_waitid(int which, compat_pid_t pid,
         long ret;
         mm_segment_t old_fs = get_fs();
 
+        if (!access_ok(VERIFY_WRITE, uinfo, sizeof(*uinfo)))
+                return -EFAULT;
+
         set_fs (KERNEL_DS);
         ret = sys_waitid(which, pid, uinfo, options,
                          uru ? (struct rusage __user *) &ru : NULL);
@@ -1450,25 +1453,6 @@ sys32_timer_create(u32 clock, struct sigevent32 __user *se32, timer_t __user *ti
         return sys_timer_create(clock, p, timer_id);
 }
 
-asmlinkage long
-sysn32_rt_sigtimedwait(const sigset_t __user *uthese,
-                       siginfo_t __user *uinfo,
-                       const struct compat_timespec __user *uts32,
-                       size_t sigsetsize)
-{
-        struct timespec __user *uts = NULL;
-
-        if (uts32) {
-                struct timespec ts;
-                uts = compat_alloc_user_space(sizeof(struct timespec));
-                if (get_user(ts.tv_sec, &uts32->tv_sec) ||
-                    get_user(ts.tv_nsec, &uts32->tv_nsec) ||
-                    copy_to_user (uts, &ts, sizeof (ts)))
-                        return -EFAULT;
-        }
-        return sys_rt_sigtimedwait(uthese, uinfo, uts, sigsetsize);
-}
-
 save_static_function(sys32_clone);
 __attribute_used__ noinline static int
 _sys32_clone(nabi_no_regargs struct pt_regs regs)
diff --git a/arch/mips/kernel/scall64-n32.S b/arch/mips/kernel/scall64-n32.S
index bc4980cefc8b..d87b5446fa13 100644
--- a/arch/mips/kernel/scall64-n32.S
+++ b/arch/mips/kernel/scall64-n32.S
@@ -245,9 +245,9 @@ EXPORT(sysn32_call_table)
         PTR     sys_capget
         PTR     sys_capset
         PTR     sys32_rt_sigpending             /* 6125 */
-        PTR     sysn32_rt_sigtimedwait
+        PTR     compat_sys_rt_sigtimedwait
         PTR     sys_rt_sigqueueinfo
-        PTR     sys32_rt_sigsuspend
+        PTR     sysn32_rt_sigsuspend
         PTR     sys32_sigaltstack
         PTR     compat_sys_utime                /* 6130 */
         PTR     sys_mknod
diff --git a/arch/mips/kernel/signal32.c b/arch/mips/kernel/signal32.c
index 8a8b8dd90417..237cd8a2cd32 100644
--- a/arch/mips/kernel/signal32.c
+++ b/arch/mips/kernel/signal32.c
@@ -4,7 +4,7 @@
  * for more details.
  *
  * Copyright (C) 1991, 1992  Linus Torvalds
- * Copyright (C) 1994 - 2000  Ralf Baechle
+ * Copyright (C) 1994 - 2000, 2006  Ralf Baechle
  * Copyright (C) 1999, 2000 Silicon Graphics, Inc.
  */
 #include <linux/cache.h>
@@ -106,8 +106,6 @@ typedef struct compat_siginfo {
 
 #define _BLOCKABLE (~(sigmask(SIGKILL) | sigmask(SIGSTOP)))
 
-extern int do_signal32(sigset_t *oldset, struct pt_regs *regs);
-
 /* 32-bit compatibility types */
 
 #define _NSIG_BPW32     32
@@ -198,7 +196,7 @@ __attribute_used__ noinline static int
 _sys32_sigsuspend(nabi_no_regargs struct pt_regs regs)
 {
         compat_sigset_t *uset;
-        sigset_t newset, saveset;
+        sigset_t newset;
 
         uset = (compat_sigset_t *) regs.regs[4];
         if (get_sigset(&newset, uset))
@@ -206,19 +204,15 @@ _sys32_sigsuspend(nabi_no_regargs struct pt_regs regs)
         sigdelsetmask(&newset, ~_BLOCKABLE);
 
         spin_lock_irq(&current->sighand->siglock);
-        saveset = current->blocked;
+        current->saved_sigmask = current->blocked;
         current->blocked = newset;
         recalc_sigpending();
         spin_unlock_irq(&current->sighand->siglock);
 
-        regs.regs[2] = EINTR;
-        regs.regs[7] = 1;
-        while (1) {
-                current->state = TASK_INTERRUPTIBLE;
-                schedule();
-                if (do_signal32(&saveset, &regs))
-                        return -EINTR;
-        }
+        current->state = TASK_INTERRUPTIBLE;
+        schedule();
+        set_thread_flag(TIF_RESTORE_SIGMASK);
+        return -ERESTARTNOHAND;
 }
 
 save_static_function(sys32_rt_sigsuspend);
@@ -226,8 +220,8 @@ __attribute_used__ noinline static int
 _sys32_rt_sigsuspend(nabi_no_regargs struct pt_regs regs)
 {
         compat_sigset_t *uset;
-        sigset_t newset, saveset;
-        size_t sigsetsize;
+        sigset_t newset;
+        size_t sigsetsize;
 
         /* XXX Don't preclude handling different sized sigset_t's.  */
         sigsetsize = regs.regs[5];
@@ -240,19 +234,15 @@ _sys32_rt_sigsuspend(nabi_no_regargs struct pt_regs regs)
         sigdelsetmask(&newset, ~_BLOCKABLE);
 
         spin_lock_irq(&current->sighand->siglock);
-        saveset = current->blocked;
+        current->saved_sigmask = current->blocked;
         current->blocked = newset;
         recalc_sigpending();
         spin_unlock_irq(&current->sighand->siglock);
 
-        regs.regs[2] = EINTR;
-        regs.regs[7] = 1;
-        while (1) {
-                current->state = TASK_INTERRUPTIBLE;
-                schedule();
-                if (do_signal32(&saveset, &regs))
-                        return -EINTR;
-        }
+        current->state = TASK_INTERRUPTIBLE;
+        schedule();
+        set_thread_flag(TIF_RESTORE_SIGMASK);
+        return -ERESTARTNOHAND;
 }
 
 asmlinkage int sys32_sigaction(int sig, const struct sigaction32 *act,
@@ -783,7 +773,7 @@ static inline int handle_signal(unsigned long sig, siginfo_t *info,
                 regs->regs[2] = EINTR;
                 break;
         case ERESTARTSYS:
-                if(!(ka->sa.sa_flags & SA_RESTART)) {
+                if (!(ka->sa.sa_flags & SA_RESTART)) {
                         regs->regs[2] = EINTR;
                         break;
                 }
@@ -810,9 +800,10 @@ static inline int handle_signal(unsigned long sig, siginfo_t *info,
         return ret;
 }
 
-int do_signal32(sigset_t *oldset, struct pt_regs *regs)
+void do_signal32(struct pt_regs *regs)
 {
         struct k_sigaction ka;
+        sigset_t *oldset;
         siginfo_t info;
         int signr;
 
@@ -822,17 +813,30 @@ int do_signal32(sigset_t *oldset, struct pt_regs *regs)
          * if so.
          */
         if (!user_mode(regs))
-                return 1;
+                return;
 
         if (try_to_freeze())
                 goto no_signal;
 
-        if (!oldset)
+        if (test_thread_flag(TIF_RESTORE_SIGMASK))
+                oldset = &current->saved_sigmask;
+        else
                 oldset = &current->blocked;
 
         signr = get_signal_to_deliver(&info, &ka, regs, NULL);
-        if (signr > 0)
-                return handle_signal(signr, &info, &ka, oldset, regs);
+        if (signr > 0) {
+                /* Whee! Actually deliver the signal. */
+                if (handle_signal(signr, &info, &ka, oldset, regs) == 0) {
+                        /*
+                        * A signal was successfully delivered; the saved
+                        * sigmask will have been stored in the signal frame,
+                        * and will be restored by sigreturn, so we can simply
+                        * clear the TIF_RESTORE_SIGMASK flag.
+                        */
+                        if (test_thread_flag(TIF_RESTORE_SIGMASK))
+                                clear_thread_flag(TIF_RESTORE_SIGMASK);
+                }
+        }
 
 no_signal:
         /*
@@ -853,7 +857,15 @@ no_signal:
                         regs->cp0_epc -= 4;
                 }
         }
-        return 0;
+
+        /*
+        * If there's no signal to deliver, we just put the saved sigmask
+        * back
+        */
+        if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
+                clear_thread_flag(TIF_RESTORE_SIGMASK);
+                sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
+        }
 }
 
 asmlinkage int sys32_rt_sigaction(int sig, const struct sigaction32 *act,
diff --git a/arch/mips/kernel/signal_n32.c b/arch/mips/kernel/signal_n32.c
index 5a3776096f07..3e168c08a3a8 100644
--- a/arch/mips/kernel/signal_n32.c
+++ b/arch/mips/kernel/signal_n32.c
@@ -81,6 +81,39 @@ struct rt_sigframe_n32 {
 #endif
 };
 
+extern void sigset_from_compat (sigset_t *set, compat_sigset_t *compat);
+
+save_static_function(sysn32_rt_sigsuspend);
+__attribute_used__ noinline static int
+_sysn32_rt_sigsuspend(nabi_no_regargs struct pt_regs regs)
+{
+        compat_sigset_t __user *unewset, uset;
+        size_t sigsetsize;
+        sigset_t newset;
+
+        /* XXX Don't preclude handling different sized sigset_t's.  */
+        sigsetsize = regs.regs[5];
+        if (sigsetsize != sizeof(sigset_t))
+                return -EINVAL;
+
+        unewset = (compat_sigset_t __user *) regs.regs[4];
+        if (copy_from_user(&uset, unewset, sizeof(uset)))
+                return -EFAULT;
+        sigset_from_compat (&newset, &uset);
+        sigdelsetmask(&newset, ~_BLOCKABLE);
+
+        spin_lock_irq(&current->sighand->siglock);
+        current->saved_sigmask = current->blocked;
+        current->blocked = newset;
+        recalc_sigpending();
+        spin_unlock_irq(&current->sighand->siglock);
+
+        current->state = TASK_INTERRUPTIBLE;
+        schedule();
+        set_thread_flag(TIF_RESTORE_SIGMASK);
+        return -ERESTARTNOHAND;
+}
+
 save_static_function(sysn32_rt_sigreturn);
 __attribute_used__ noinline static void
 _sysn32_rt_sigreturn(nabi_no_regargs struct pt_regs regs)
diff --git a/arch/mips/kernel/smp.c b/arch/mips/kernel/smp.c
index 25472fcaf715..5e189862e523 100644
--- a/arch/mips/kernel/smp.c
+++ b/arch/mips/kernel/smp.c
@@ -29,6 +29,7 @@
 #include <linux/timex.h>
 #include <linux/sched.h>
 #include <linux/cpumask.h>
+#include <linux/cpu.h>
 
 #include <asm/atomic.h>
 #include <asm/cpu.h>
@@ -424,6 +425,25 @@ void flush_tlb_one(unsigned long vaddr)
         local_flush_tlb_one(vaddr);
 }
 
+static DEFINE_PER_CPU(struct cpu, cpu_devices);
+
+static int __init topology_init(void)
+{
+        int cpu;
+        int ret;
+
+        for_each_cpu(cpu) {
+                ret = register_cpu(&per_cpu(cpu_devices, cpu), cpu, NULL);
+                if (ret)
+                        printk(KERN_WARNING "topology_init: register_cpu %d "
+                               "failed (%d)\n", cpu, ret);
+        }
+
+        return 0;
+}
+
+subsys_initcall(topology_init);
+
 EXPORT_SYMBOL(flush_tlb_page);
 EXPORT_SYMBOL(flush_tlb_one);
 EXPORT_SYMBOL(cpu_data);
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index c9d2b5147ca3..005debbfbe84 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -3,7 +3,7 @@
  * License.  See the file "COPYING" in the main directory of this archive
  * for more details.
  *
- * Copyright (C) 1994 - 1999, 2000, 01 Ralf Baechle
+ * Copyright (C) 1994 - 1999, 2000, 01, 06 Ralf Baechle
  * Copyright (C) 1995, 1996 Paul M. Antoine
  * Copyright (C) 1998 Ulf Carlsson
  * Copyright (C) 1999 Silicon Graphics, Inc.
@@ -548,6 +548,8 @@ asmlinkage void do_ov(struct pt_regs *regs)
 {
         siginfo_t info;
 
+        die_if_kernel("Integer overflow", regs);
+
         info.si_code = FPE_INTOVF;
         info.si_signo = SIGFPE;
         info.si_errno = 0;