The patch titled
Subject: sys_getppid: add missing rcu_dereference
has been added to the -mm tree. Its filename is
sys_getppid-add-missing-rcu_dereference.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/SubmitChecklist when testing your code ***
See http://userweb.kernel.org/~akpm/stuff/added-to-mm.txt to find
out what to do about this
The current -mm tree may be found at http://userweb.kernel.org/~akpm/mmotm/
------------------------------------------------------
From: Mandeep Singh Baines <msb@xxxxxxxxxxxx>
Subject: sys_getppid: add missing rcu_dereference
In order to safely dereference current->real_parent inside an
rcu_read_lock, we need an rcu_dereference.
Signed-off-by: Mandeep Singh Baines <msb@xxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Pavel Emelyanov <xemul@xxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Kees Cook <keescook@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/timer.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN kernel/timer.c~sys_getppid-add-missing-rcu_dereference kernel/timer.c
--- a/kernel/timer.c~sys_getppid-add-missing-rcu_dereference
+++ a/kernel/timer.c
@@ -1418,7 +1418,7 @@ SYSCALL_DEFINE0(getppid)
int pid;
rcu_read_lock();
- pid = task_tgid_vnr(current->real_parent);
+ pid = task_tgid_vnr(rcu_dereference(current->real_parent));
rcu_read_unlock();
return pid;
_
Subject: Subject: sys_getppid: add missing rcu_dereference
Patches currently in -mm which might be from msb@xxxxxxxxxxxx are
linux-next.patch
sys_getppid-add-missing-rcu_dereference.patch
--
To unsubscribe from this list: send the line "unsubscribe mm-commits" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
