Merge branch 'next' into for-linus

4 files changed, 33 insertions, 23 deletions

diff --git a/arch/ia64/ia32/sys_ia32.c b/arch/ia64/ia32/sys_ia32.c
index 5e92ae00bdbb..16ef61a91d95 100644
--- a/arch/ia64/ia32/sys_ia32.c
+++ b/arch/ia64/ia32/sys_ia32.c
@@ -1767,25 +1767,24 @@ groups16_from_user(struct group_info *group_info, short __user *grouplist)
 asmlinkage long
 sys32_getgroups16 (int gidsetsize, short __user *grouplist)
 {
+        const struct cred *cred = current_cred();
         int i;
 
         if (gidsetsize < 0)
                 return -EINVAL;
 
-        get_group_info(current->group_info);
-        i = current->group_info->ngroups;
+        i = cred->group_info->ngroups;
         if (gidsetsize) {
                 if (i > gidsetsize) {
                         i = -EINVAL;
                         goto out;
                 }
-                if (groups16_to_user(grouplist, current->group_info)) {
+                if (groups16_to_user(grouplist, cred->group_info)) {
                         i = -EFAULT;
                         goto out;
                 }
         }
 out:
-        put_group_info(current->group_info);
         return i;
 }
 
diff --git a/arch/ia64/kernel/mca_drv.c b/arch/ia64/kernel/mca_drv.c
index fab1d21a4f2c..f94aaa86933f 100644
--- a/arch/ia64/kernel/mca_drv.c
+++ b/arch/ia64/kernel/mca_drv.c
@@ -158,7 +158,7 @@ mca_handler_bh(unsigned long paddr, void *iip, unsigned long ipsr)
         ia64_mlogbuf_dump();
         printk(KERN_ERR "OS_MCA: process [cpu %d, pid: %d, uid: %d, "
                 "iip: %p, psr: 0x%lx,paddr: 0x%lx](%s) encounters MCA.\n",
-                raw_smp_processor_id(), current->pid, current->uid,
+               raw_smp_processor_id(), current->pid, current_uid(),
                 iip, ipsr, paddr, current->comm);
 
         spin_lock(&mca_bh_lock);
diff --git a/arch/ia64/kernel/perfmon.c b/arch/ia64/kernel/perfmon.c
index 6543a5547c84..0e499757309b 100644
--- a/arch/ia64/kernel/perfmon.c
+++ b/arch/ia64/kernel/perfmon.c
@@ -2220,8 +2220,8 @@ pfm_alloc_file(pfm_context_t *ctx)
         DPRINT(("new inode ino=%ld @%p\n", inode->i_ino, inode));
 
         inode->i_mode = S_IFCHR|S_IRUGO;
-        inode->i_uid  = current->fsuid;
-        inode->i_gid  = current->fsgid;
+        inode->i_uid  = current_fsuid();
+        inode->i_gid  = current_fsgid();
 
         sprintf(name, "[%lu]", inode->i_ino);
         this.name = name;
@@ -2399,22 +2399,33 @@ error_kmem:
 static int
 pfm_bad_permissions(struct task_struct *task)
 {
+        const struct cred *tcred;
+        uid_t uid = current_uid();
+        gid_t gid = current_gid();
+        int ret;
+
+        rcu_read_lock();
+        tcred = __task_cred(task);
+
         /* inspired by ptrace_attach() */
         DPRINT(("cur: uid=%d gid=%d task: euid=%d suid=%d uid=%d egid=%d sgid=%d\n",
-                current->uid,
-                current->gid,
-                task->euid,
-                task->suid,
-                task->uid,
-                task->egid,
-                task->sgid));
-
-        return ((current->uid != task->euid)
-            || (current->uid != task->suid)
-            || (current->uid != task->uid)
-            || (current->gid != task->egid)
-            || (current->gid != task->sgid)
-            || (current->gid != task->gid)) && !capable(CAP_SYS_PTRACE);
+                uid,
+                gid,
+                tcred->euid,
+                tcred->suid,
+                tcred->uid,
+                tcred->egid,
+                tcred->sgid));
+
+        ret = ((uid != tcred->euid)
+               || (uid != tcred->suid)
+               || (uid != tcred->uid)
+               || (gid != tcred->egid)
+               || (gid != tcred->sgid)
+               || (gid != tcred->gid)) && !capable(CAP_SYS_PTRACE);
+
+        rcu_read_unlock();
+        return ret;
 }
 
 static int
diff --git a/arch/ia64/kernel/signal.c b/arch/ia64/kernel/signal.c
index e12500a9c443..e1821ca4c7df 100644
--- a/arch/ia64/kernel/signal.c
+++ b/arch/ia64/kernel/signal.c
@@ -229,7 +229,7 @@ ia64_rt_sigreturn (struct sigscratch *scr)
         si.si_errno = 0;
         si.si_code = SI_KERNEL;
         si.si_pid = task_pid_vnr(current);
-        si.si_uid = current->uid;
+        si.si_uid = current_uid();
         si.si_addr = sc;
         force_sig_info(SIGSEGV, &si, current);
         return retval;
@@ -326,7 +326,7 @@ force_sigsegv_info (int sig, void __user *addr)
         si.si_errno = 0;
         si.si_code = SI_KERNEL;
         si.si_pid = task_pid_vnr(current);
-        si.si_uid = current->uid;
+        si.si_uid = current_uid();
         si.si_addr = addr;
         force_sig_info(SIGSEGV, &si, current);
         return 0;