forked from luck/tmp_suning_uos_patched
futex: fix init order
When the futex init code fails to initialize the futex pseudo file system it returns early without initializing the hash queues. Should the boot succeed then a futex syscall which tries to enqueue a waiter on the hashqueue will crash due to the unitilialized plist heads. Initialize the hash queues before the filesystem. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Acked-by: Ingo Molnar <mingo@elte.hu> Cc: Lennert Buytenhek <buytenh@wantstofly.org> Cc: Riku Voipio <riku.voipio@movial.fi> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
parent
43fe105a5c
commit
3e4ab747ef
@ -2145,8 +2145,14 @@ static struct file_system_type futex_fs_type = {
|
|||||||
|
|
||||||
static int __init init(void)
|
static int __init init(void)
|
||||||
{
|
{
|
||||||
int i = register_filesystem(&futex_fs_type);
|
int i;
|
||||||
|
|
||||||
|
for (i = 0; i < ARRAY_SIZE(futex_queues); i++) {
|
||||||
|
plist_head_init(&futex_queues[i].chain, &futex_queues[i].lock);
|
||||||
|
spin_lock_init(&futex_queues[i].lock);
|
||||||
|
}
|
||||||
|
|
||||||
|
i = register_filesystem(&futex_fs_type);
|
||||||
if (i)
|
if (i)
|
||||||
return i;
|
return i;
|
||||||
|
|
||||||
@ -2156,10 +2162,6 @@ static int __init init(void)
|
|||||||
return PTR_ERR(futex_mnt);
|
return PTR_ERR(futex_mnt);
|
||||||
}
|
}
|
||||||
|
|
||||||
for (i = 0; i < ARRAY_SIZE(futex_queues); i++) {
|
|
||||||
plist_head_init(&futex_queues[i].chain, &futex_queues[i].lock);
|
|
||||||
spin_lock_init(&futex_queues[i].lock);
|
|
||||||
}
|
|
||||||
return 0;
|
return 0;
|
||||||
}
|
}
|
||||||
__initcall(init);
|
__initcall(init);
|
||||||
|
Loading…
Reference in New Issue
Block a user