mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-25 17:15:21 +07:00
130c586061
Prior, if the alloc_percpu of packet_percpu_multicore_worker_alloc
failed, the previously allocated ptr_ring wouldn't be freed. This commit
adds the missing call to ptr_ring_cleanup in the error case.
Reported-by: Sultan Alsawaf <sultan@kerneltoast.com>
Fixes: e7096c131e
("net: WireGuard secure network tunnel")
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
56 lines
1.2 KiB
C
56 lines
1.2 KiB
C
// SPDX-License-Identifier: GPL-2.0
|
|
/*
|
|
* Copyright (C) 2015-2019 Jason A. Donenfeld <Jason@zx2c4.com>. All Rights Reserved.
|
|
*/
|
|
|
|
#include "queueing.h"
|
|
|
|
struct multicore_worker __percpu *
|
|
wg_packet_percpu_multicore_worker_alloc(work_func_t function, void *ptr)
|
|
{
|
|
int cpu;
|
|
struct multicore_worker __percpu *worker =
|
|
alloc_percpu(struct multicore_worker);
|
|
|
|
if (!worker)
|
|
return NULL;
|
|
|
|
for_each_possible_cpu(cpu) {
|
|
per_cpu_ptr(worker, cpu)->ptr = ptr;
|
|
INIT_WORK(&per_cpu_ptr(worker, cpu)->work, function);
|
|
}
|
|
return worker;
|
|
}
|
|
|
|
int wg_packet_queue_init(struct crypt_queue *queue, work_func_t function,
|
|
bool multicore, unsigned int len)
|
|
{
|
|
int ret;
|
|
|
|
memset(queue, 0, sizeof(*queue));
|
|
ret = ptr_ring_init(&queue->ring, len, GFP_KERNEL);
|
|
if (ret)
|
|
return ret;
|
|
if (function) {
|
|
if (multicore) {
|
|
queue->worker = wg_packet_percpu_multicore_worker_alloc(
|
|
function, queue);
|
|
if (!queue->worker) {
|
|
ptr_ring_cleanup(&queue->ring, NULL);
|
|
return -ENOMEM;
|
|
}
|
|
} else {
|
|
INIT_WORK(&queue->work, function);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
void wg_packet_queue_free(struct crypt_queue *queue, bool multicore)
|
|
{
|
|
if (multicore)
|
|
free_percpu(queue->worker);
|
|
WARN_ON(!__ptr_ring_empty(&queue->ring));
|
|
ptr_ring_cleanup(&queue->ring, NULL);
|
|
}
|