Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
Merge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip
* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
posix-cpu-timers: Rcu_read_lock/unlock protect find_task_by_vpid call
+6
-6
kernel/posix-cpu-timers.c
+6
-6
kernel/posix-cpu-timers.c
···
37
37
if (pid == 0)
38
38
return 0;
39
39
40
-
read_lock(&tasklist_lock);
40
+
rcu_read_lock();
41
41
p = find_task_by_vpid(pid);
42
42
if (!p || !(CPUCLOCK_PERTHREAD(which_clock) ?
43
-
same_thread_group(p, current) : thread_group_leader(p))) {
43
+
same_thread_group(p, current) : has_group_leader_pid(p))) {
44
44
error = -EINVAL;
45
45
}
46
-
read_unlock(&tasklist_lock);
46
+
rcu_read_unlock();
47
47
48
48
return error;
49
49
}
···
390
390
391
391
INIT_LIST_HEAD(&new_timer->it.cpu.entry);
392
392
393
-
read_lock(&tasklist_lock);
393
+
rcu_read_lock();
394
394
if (CPUCLOCK_PERTHREAD(new_timer->it_clock)) {
395
395
if (pid == 0) {
396
396
p = current;
···
404
404
p = current->group_leader;
405
405
} else {
406
406
p = find_task_by_vpid(pid);
407
-
if (p && !thread_group_leader(p))
407
+
if (p && !has_group_leader_pid(p))
408
408
p = NULL;
409
409
}
410
410
}
···
414
414
} else {
415
415
ret = -EINVAL;
416
416
}
417
-
read_unlock(&tasklist_lock);
417
+
rcu_read_unlock();
418
418
419
419
return ret;
420
420
}