4 files changed, 33 insertions, 23 deletions

diff --git a/arch/ia64/ia32/sys_ia32.c b/arch/ia64/ia32/sys_ia32.c
index 5e92ae00bdb..16ef61a91d9 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 fab1d21a4f2..f94aaa86933 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 6543a5547c8..0e499757309 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 e12500a9c44..e1821ca4c7d 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;