1 files changed, 27 insertions, 15 deletions

diff --git a/fs/proc/array.c b/fs/proc/array.c
index f4bc0e789539..7e4877d9dcb5 100644
--- a/fs/proc/array.c
+++ b/fs/proc/array.c
@@ -40,7 +40,7 @@
  *
  *
  * Alan Cox          :  security fixes.
- *                      <Alan.Cox@linux.org>
+ *                      <alan@lxorguk.ukuu.org.uk>
  *
  * Al Viro           :  safe handling of mm_struct
  *
@@ -159,6 +159,7 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
         struct group_info *group_info;
         int g;
         struct fdtable *fdt = NULL;
+        const struct cred *cred;
         pid_t ppid, tpid;
 
         rcu_read_lock();
@@ -170,6 +171,7 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
                 if (tracer)
                         tpid = task_pid_nr_ns(tracer, ns);
         }
+        cred = get_cred((struct cred *) __task_cred(p));
         seq_printf(m,
                 "State:\t%s\n"
                 "Tgid:\t%d\n"
@@ -182,8 +184,8 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
                 task_tgid_nr_ns(p, ns),
                 pid_nr_ns(pid, ns),
                 ppid, tpid,
-                p->uid, p->euid, p->suid, p->fsuid,
-                p->gid, p->egid, p->sgid, p->fsgid);
+                cred->uid, cred->euid, cred->suid, cred->fsuid,
+                cred->gid, cred->egid, cred->sgid, cred->fsgid);
 
         task_lock(p);
         if (p->files)
@@ -194,13 +196,12 @@ static inline void task_state(struct seq_file *m, struct pid_namespace *ns,
                 fdt ? fdt->max_fds : 0);
         rcu_read_unlock();
 
-        group_info = p->group_info;
-        get_group_info(group_info);
+        group_info = cred->group_info;
         task_unlock(p);
 
         for (g = 0; g < min(group_info->ngroups, NGROUPS_SMALL); g++)
                 seq_printf(m, "%d ", GROUP_AT(group_info, g));
-        put_group_info(group_info);
+        put_cred(cred);
 
         seq_printf(m, "\n");
 }
@@ -262,7 +263,7 @@ static inline void task_sig(struct seq_file *m, struct task_struct *p)
                 blocked = p->blocked;
                 collect_sigign_sigcatch(p, &ignored, &caught);
                 num_threads = atomic_read(&p->signal->count);
-                qsize = atomic_read(&p->user->sigpending);
+                qsize = atomic_read(&__task_cred(p)->user->sigpending);
                 qlim = p->signal->rlim[RLIMIT_SIGPENDING].rlim_cur;
                 unlock_task_sighand(p, &flags);
         }
@@ -293,10 +294,21 @@ static void render_cap_t(struct seq_file *m, const char *header,
 
 static inline void task_cap(struct seq_file *m, struct task_struct *p)
 {
-        render_cap_t(m, "CapInh:\t", &p->cap_inheritable);
-        render_cap_t(m, "CapPrm:\t", &p->cap_permitted);
-        render_cap_t(m, "CapEff:\t", &p->cap_effective);
-        render_cap_t(m, "CapBnd:\t", &p->cap_bset);
+        const struct cred *cred;
+        kernel_cap_t cap_inheritable, cap_permitted, cap_effective, cap_bset;
+
+        rcu_read_lock();
+        cred = __task_cred(p);
+        cap_inheritable = cred->cap_inheritable;
+        cap_permitted   = cred->cap_permitted;
+        cap_effective   = cred->cap_effective;
+        cap_bset        = cred->cap_bset;
+        rcu_read_unlock();
+
+        render_cap_t(m, "CapInh:\t", &cap_inheritable);
+        render_cap_t(m, "CapPrm:\t", &cap_permitted);
+        render_cap_t(m, "CapEff:\t", &cap_effective);
+        render_cap_t(m, "CapBnd:\t", &cap_bset);
 }
 
 static inline void task_context_switch_counts(struct seq_file *m,
@@ -388,20 +400,20 @@ static int do_task_stat(struct seq_file *m, struct pid_namespace *ns,
 
                 /* add up live thread stats at the group level */
                 if (whole) {
+                        struct task_cputime cputime;
                         struct task_struct *t = task;
                         do {
                                 min_flt += t->min_flt;
                                 maj_flt += t->maj_flt;
-                                utime = cputime_add(utime, task_utime(t));
-                                stime = cputime_add(stime, task_stime(t));
                                 gtime = cputime_add(gtime, task_gtime(t));
                                 t = next_thread(t);
                         } while (t != task);
 
                         min_flt += sig->min_flt;
                         maj_flt += sig->maj_flt;
-                        utime = cputime_add(utime, sig->utime);
-                        stime = cputime_add(stime, sig->stime);
+                        thread_group_cputime(task, &cputime);
+                        utime = cputime.utime;
+                        stime = cputime.stime;
                         gtime = cputime_add(gtime, sig->gtime);
                 }