From 7c9414385ebfdd87cc542d4e7e3bb0dbb2d3ce25 Mon Sep 17 00:00:00 2001 From: Dhaval Giani Date: Wed, 20 Jan 2010 13:26:18 +0100 Subject: sched: Remove USER_SCHED Remove the USER_SCHED feature. It has been scheduled to be removed in 2.6.34 as per http://marc.info/?l=linux-kernel&m=125728479022976&w=2 Signed-off-by: Dhaval Giani Signed-off-by: Peter Zijlstra LKML-Reference: <1263990378.24844.3.camel@localhost> Signed-off-by: Ingo Molnar --- kernel/sys.c | 5 ----- 1 file changed, 5 deletions(-) (limited to 'kernel/sys.c') diff --git a/kernel/sys.c b/kernel/sys.c index 26a6b73a6b8..f75bf0936f4 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -569,11 +569,6 @@ static int set_user(struct cred *new) if (!new_user) return -EAGAIN; - if (!task_can_switch_user(new_user, current)) { - free_uid(new_user); - return -EINVAL; - } - if (atomic_read(&new_user->processes) >= current->signal->rlim[RLIMIT_NPROC].rlim_cur && new_user != INIT_USER) { -- cgit v1.2.3-70-g09d2 From 701188374b6f1ef9cf7e4dce4a2e69ef4c0012ac Mon Sep 17 00:00:00 2001 From: Tetsuo Handa Date: Mon, 22 Feb 2010 12:44:16 -0800 Subject: kernel/sys.c: fix missing rcu protection for sys_getpriority() find_task_by_vpid() is not safe without rcu_read_lock(). 2.6.33-rc7 got RCU protection for sys_setpriority() but missed it for sys_getpriority(). Signed-off-by: Tetsuo Handa Cc: Oleg Nesterov Cc: "Paul E. McKenney" Acked-by: Serge Hallyn Acked-by: Thomas Gleixner Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- kernel/sys.c | 2 ++ 1 file changed, 2 insertions(+) (limited to 'kernel/sys.c') diff --git a/kernel/sys.c b/kernel/sys.c index 26a6b73a6b8..18bde979f34 100644 --- a/kernel/sys.c +++ b/kernel/sys.c @@ -222,6 +222,7 @@ SYSCALL_DEFINE2(getpriority, int, which, int, who) if (which > PRIO_USER || which < PRIO_PROCESS) return -EINVAL; + rcu_read_lock(); read_lock(&tasklist_lock); switch (which) { case PRIO_PROCESS: @@ -267,6 +268,7 @@ SYSCALL_DEFINE2(getpriority, int, which, int, who) } out_unlock: read_unlock(&tasklist_lock); + rcu_read_unlock(); return retval; } -- cgit v1.2.3-70-g09d2