[PATCH] Add the __stack_chk_fail() function

[linux-2.6-omap-h63xx.git] / kernel / fork.c

diff --git a/kernel/fork.c b/kernel/fork.c
index 451cfd35bf22cdccfdd3f93871ee3712bc3d688a..a0dad84567c9c7effe6b46f98bf077ee5d9f5e22 100644 (file)
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -44,6 +44,8 @@
 #include <linux/acct.h>
 #include <linux/cn_proc.h>
 #include <linux/delayacct.h>
+#include <linux/taskstats_kern.h>
+#include <linux/random.h>
 
 #include <asm/pgtable.h>
 #include <asm/pgalloc.h>
@@ -116,6 +118,7 @@ void __put_task_struct(struct task_struct *tsk)
        security_task_free(tsk);
        free_uid(tsk->user);
        put_group_info(tsk->group_info);
+       delayacct_tsk_free(tsk);
 
        if (!profile_handoff_task(tsk))
                free_task(tsk);
@@ -173,6 +176,10 @@ static struct task_struct *dup_task_struct(struct task_struct *orig)
        tsk->thread_info = ti;
        setup_thread_stack(tsk, orig);
 
+#ifdef CONFIG_CC_STACKPROTECTOR
+       tsk->stack_canary = get_random_int();
+#endif
+
        /* One for us, one for whoever does the "release_task()" (usually parent) */
        atomic_set(&tsk->usage,2);
        atomic_set(&tsk->fs_excl, 0);
@@ -819,6 +826,7 @@ static inline int copy_signal(unsigned long clone_flags, struct task_struct * ts
        if (clone_flags & CLONE_THREAD) {
                atomic_inc(&current->signal->count);
                atomic_inc(&current->signal->live);
+               taskstats_tgid_alloc(current->signal);
                return 0;
        }
        sig = kmem_cache_alloc(signal_cachep, GFP_KERNEL);
@@ -863,6 +871,7 @@ static inline int copy_signal(unsigned long clone_flags, struct task_struct * ts
        INIT_LIST_HEAD(&sig->cpu_timers[0]);
        INIT_LIST_HEAD(&sig->cpu_timers[1]);
        INIT_LIST_HEAD(&sig->cpu_timers[2]);
+       taskstats_tgid_init(sig);
 
        task_lock(current->group_leader);
        memcpy(sig->rlim, current->signal->rlim, sizeof sig->rlim);
@@ -884,6 +893,7 @@ static inline int copy_signal(unsigned long clone_flags, struct task_struct * ts
 void __cleanup_signal(struct signal_struct *sig)
 {
        exit_thread_group_keys(sig);
+       taskstats_tgid_free(sig);
        kmem_cache_free(signal_cachep, sig);
 }
 
@@ -1007,7 +1017,7 @@ static struct task_struct *copy_process(unsigned long clone_flags,
        retval = -EFAULT;
        if (clone_flags & CLONE_PARENT_SETTID)
                if (put_user(p->pid, parent_tidptr))
-                       goto bad_fork_cleanup;
+                       goto bad_fork_cleanup_delays_binfmt;
 
        INIT_LIST_HEAD(&p->children);
        INIT_LIST_HEAD(&p->sibling);
@@ -1273,7 +1283,8 @@ bad_fork_cleanup_policy:
 bad_fork_cleanup_cpuset:
 #endif
        cpuset_exit(p);
-bad_fork_cleanup:
+bad_fork_cleanup_delays_binfmt:
+       delayacct_tsk_free(p);
        if (p->binfmt)
                module_put(p->binfmt->module);
 bad_fork_cleanup_put_domain:
@@ -1383,8 +1394,10 @@ long do_fork(unsigned long clone_flags,
 
                if (clone_flags & CLONE_VFORK) {
                        wait_for_completion(&vfork);
-                       if (unlikely (current->ptrace & PT_TRACE_VFORK_DONE))
+                       if (unlikely (current->ptrace & PT_TRACE_VFORK_DONE)) {
+                               current->ptrace_message = nr;
                                ptrace_notify ((PTRACE_EVENT_VFORK_DONE << 8) | SIGTRAP);
+                       }
                }
        } else {
                free_pid(pid);