From 1aea2328b45aa547a36a8db2b75032727c1672a7 Mon Sep 17 00:00:00 2001
From: Kyle McMartin <kyle@mcmartin.ca>
Date: Mon, 8 Nov 2010 10:38:33 -0500
Subject: Cherry-pick utrace-ptrace fixes from mayoung. Thanks!

---
 linux-2.6-utrace-ptrace.patch | 35 +++++++++++++++++++----------------
 1 file changed, 19 insertions(+), 16 deletions(-)

(limited to 'linux-2.6-utrace-ptrace.patch')

diff --git a/linux-2.6-utrace-ptrace.patch b/linux-2.6-utrace-ptrace.patch
index a609fb628..caeae6760 100644
--- a/linux-2.6-utrace-ptrace.patch
+++ b/linux-2.6-utrace-ptrace.patch
@@ -29,9 +29,9 @@ index a85fb41..235c1b0 100644
  
 -
 +extern void ptrace_notify_stop(struct task_struct *tracee);
- extern long arch_ptrace(struct task_struct *child, long request, long addr, long data);
+ extern long arch_ptrace(struct task_struct *child, long request,
+ 			unsigned long addr, unsigned long data);
  extern int ptrace_traceme(void);
- extern int ptrace_readdata(struct task_struct *tsk, unsigned long src, char __user *dst, int len);
 diff --git a/kernel/Makefile b/kernel/Makefile
 index 6004913..b09c9a5 100644  
 --- a/kernel/Makefile
@@ -673,7 +673,7 @@ index ...a90078d 100644
 +	 * under ptrace.
 +	 */
 +	retval = -ERESTARTNOINTR;
-+	if (mutex_lock_interruptible(&task->cred_guard_mutex))
++	if (mutex_lock_interruptible(&task->signal->cred_guard_mutex))
 +		goto out;
 +
 +	task_lock(task);
@@ -703,7 +703,7 @@ index ...a90078d 100644
 +unlock_tasklist:
 +	write_unlock_irq(&tasklist_lock);
 +unlock_creds:
-+	mutex_unlock(&task->cred_guard_mutex);
++	mutex_unlock(&task->signal->cred_guard_mutex);
 +out:
 +	return retval;
 +}
@@ -1014,7 +1014,7 @@ index ...a90078d 100644
 +			 struct iovec *kiov);
 +
 +int ptrace_request(struct task_struct *child, long request,
-+		   long addr, long data)
++		   unsigned long addr, unsigned long data)
 +{
 +	struct utrace_engine *engine = ptrace_lookup_engine(child);
 +	siginfo_t siginfo;
@@ -1412,7 +1412,7 @@ index 23bde94..daed9e8 100644
 +#define arch_ptrace_attach(child)	do { } while (0)
 +#endif
 +
-+SYSCALL_DEFINE4(ptrace, long, request, long, pid, long, addr, long, data)
++SYSCALL_DEFINE4(ptrace, long, request, long, pid, unsigned long, addr, unsigned long, data)
 +{
 +	struct task_struct *child;
 +	long ret;
@@ -1453,7 +1453,7 @@ index 23bde94..daed9e8 100644
 +	return ret;
 +}
 +
-+int generic_ptrace_peekdata(struct task_struct *tsk, long addr, long data)
++int generic_ptrace_peekdata(struct task_struct *tsk, unsigned long addr, unsigned long data)
 +{
 +	unsigned long tmp;
 +	int copied;
@@ -1464,7 +1464,7 @@ index 23bde94..daed9e8 100644
 +	return put_user(tmp, (unsigned long __user *)data);
 +}
 +
-+int generic_ptrace_pokedata(struct task_struct *tsk, long addr, long data)
++int generic_ptrace_pokedata(struct task_struct *tsk, unsigned long addr, unsigned long data)
 +{
 +	int copied;
 +
@@ -1595,7 +1595,7 @@ index 23bde94..daed9e8 100644
  unlock_tasklist:
 -	write_unlock_irq(&tasklist_lock);
 -unlock_creds:
--	mutex_unlock(&task->cred_guard_mutex);
+-	mutex_unlock(&task->signal->cred_guard_mutex);
 -out:
 -	return retval;
 -}
@@ -1656,7 +1656,7 @@ index 23bde94..daed9e8 100644
 - * If it should reap itself, return true.
 +	write_unlock_irq(&tasklist_lock);
 +unlock_creds:
-+	mutex_unlock(&task->cred_guard_mutex);
++	mutex_unlock(&task->signal->cred_guard_mutex);
 +out:
 +	return retval;
 +}
@@ -1765,7 +1765,7 @@ index 23bde94..daed9e8 100644
 -	return copied;
 -}
 -
- static int ptrace_setoptions(struct task_struct *child, long data)
+ static int ptrace_setoptions(struct task_struct *child, unsigned long data)
  {
  	child->ptrace &= ~PT_TRACE_MASK;
 @@ -530,47 +677,6 @@ static int ptrace_resume(struct task_str
@@ -1814,9 +1814,9 @@ index 23bde94..daed9e8 100644
 -#endif
 -
  int ptrace_request(struct task_struct *child, long request,
- 		   long addr, long data)
+ 		   unsigned long addr, unsigned long data)
  {
-@@ -686,88 +792,7 @@ int ptrace_request(struct task_struct *c
+@@ -686,91 +792,7 @@ int ptrace_request(struct task_struct *c
  	return ret;
  }
  
@@ -1839,7 +1839,8 @@ index 23bde94..daed9e8 100644
 -#define arch_ptrace_attach(child)	do { } while (0)
 -#endif
 -
--SYSCALL_DEFINE4(ptrace, long, request, long, pid, long, addr, long, data)
+-SYSCALL_DEFINE4(ptrace, long, request, long, pid, unsigned long, addr,
+-		unsigned long, data)
 -{
 -	struct task_struct *child;
 -	long ret;
@@ -1880,7 +1881,8 @@ index 23bde94..daed9e8 100644
 -	return ret;
 -}
 -
--int generic_ptrace_peekdata(struct task_struct *tsk, long addr, long data)
+-int generic_ptrace_peekdata(struct task_struct *tsk, unsigned long addr,
+-			    unsigned long data)
 -{
 -	unsigned long tmp;
 -	int copied;
@@ -1891,7 +1893,8 @@ index 23bde94..daed9e8 100644
 -	return put_user(tmp, (unsigned long __user *)data);
 -}
 -
--int generic_ptrace_pokedata(struct task_struct *tsk, long addr, long data)
+-int generic_ptrace_pokedata(struct task_struct *tsk, unsigned long addr,
+-			    unsigned long data)
 -{
 -	int copied;
 -
-- 
cgit