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Merge branch 'wireguard-siphash-patches-for-5-16-rc6'

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Jason A. Donenfeld says:

====================
wireguard/siphash patches for 5.16-rc

Here's quite a largeish set of stable patches I've had queued up and
testing for a number of months now:

  - Patch (1) squelches a sparse warning by fixing an annotation.
  - Patches (2), (3), and (5) are minor improvements and fixes to the
    test suite.
  - Patch (4) is part of a tree-wide cleanup to have module-specific
    init and exit functions.
  - Patch (6) fixes a an issue with dangling dst references, by having a
    function to release references immediately rather than deferring,
    and adds an associated test case to prevent this from regressing.
  - Patches (7) and (8) help mitigate somewhat a potential DoS on the
    ingress path due to the use of skb_list's locking hitting contention
    on multiple cores by switching to using a ring buffer and dropping
    packets on contention rather than locking up another core spinning.
  - Patch (9) switches kvzalloc to kvcalloc for better form.
  - Patch (10) fixes alignment traps in siphash with clang-13 (and maybe
    other compilers) on armv6, by switching to using the unaligned
    functions by default instead of the aligned functions by default.
====================

Link: https://lore.kernel.org/r/20211129153929.3457-1-Jason@zx2c4.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jakub Kicinski 2021-11-29 19:50:50 -08:00
commit cbd92e7d74
16 changed files with 128 additions and 70 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/net/wireguard/allowedips.c
View File

@ -163,7 +163,7 @@ static bool node_placement(struct allowedips_node __rcu *trie, const u8 *key,
return exact;
}
static inline void connect_node(struct allowedips_node **parent, u8 bit, struct allowedips_node *node)
static inline void connect_node(struct allowedips_node __rcu **parent, u8 bit, struct allowedips_node *node)
{
node->parent_bit_packed = (unsigned long)parent | bit;
rcu_assign_pointer(*parent, node);

39
drivers/net/wireguard/device.c
View File

@ -98,6 +98,7 @@ static int wg_stop(struct net_device *dev)
{
struct wg_device *wg = netdev_priv(dev);
struct wg_peer *peer;
struct sk_buff *skb;
mutex_lock(&wg->device_update_lock);
list_for_each_entry(peer, &wg->peer_list, peer_list) {
@ -108,7 +109,9 @@ static int wg_stop(struct net_device *dev)
wg_noise_reset_last_sent_handshake(&peer->last_sent_handshake);
}
mutex_unlock(&wg->device_update_lock);
skb_queue_purge(&wg->incoming_handshakes);
while ((skb = ptr_ring_consume(&wg->handshake_queue.ring)) != NULL)
kfree_skb(skb);
atomic_set(&wg->handshake_queue_len, 0);
wg_socket_reinit(wg, NULL, NULL);
return 0;
}
@ -235,14 +238,13 @@ static void wg_destruct(struct net_device *dev)
destroy_workqueue(wg->handshake_receive_wq);
destroy_workqueue(wg->handshake_send_wq);
destroy_workqueue(wg->packet_crypt_wq);
wg_packet_queue_free(&wg->decrypt_queue);
wg_packet_queue_free(&wg->encrypt_queue);
wg_packet_queue_free(&wg->handshake_queue, true);
wg_packet_queue_free(&wg->decrypt_queue, false);
wg_packet_queue_free(&wg->encrypt_queue, false);
rcu_barrier(); /* Wait for all the peers to be actually freed. */
wg_ratelimiter_uninit();
memzero_explicit(&wg->static_identity, sizeof(wg->static_identity));
skb_queue_purge(&wg->incoming_handshakes);
free_percpu(dev->tstats);
free_percpu(wg->incoming_handshakes_worker);
kvfree(wg->index_hashtable);
kvfree(wg->peer_hashtable);
mutex_unlock(&wg->device_update_lock);
@ -298,7 +300,6 @@ static int wg_newlink(struct net *src_net, struct net_device *dev,
init_rwsem(&wg->static_identity.lock);
mutex_init(&wg->socket_update_lock);
mutex_init(&wg->device_update_lock);
skb_queue_head_init(&wg->incoming_handshakes);
wg_allowedips_init(&wg->peer_allowedips);
wg_cookie_checker_init(&wg->cookie_checker, wg);
INIT_LIST_HEAD(&wg->peer_list);
@ -316,16 +317,10 @@ static int wg_newlink(struct net *src_net, struct net_device *dev,
if (!dev->tstats)
goto err_free_index_hashtable;
wg->incoming_handshakes_worker =
wg_packet_percpu_multicore_worker_alloc(
wg_packet_handshake_receive_worker, wg);
if (!wg->incoming_handshakes_worker)
goto err_free_tstats;
wg->handshake_receive_wq = alloc_workqueue("wg-kex-%s",
WQ_CPU_INTENSIVE | WQ_FREEZABLE, 0, dev->name);
if (!wg->handshake_receive_wq)
goto err_free_incoming_handshakes;
goto err_free_tstats;
wg->handshake_send_wq = alloc_workqueue("wg-kex-%s",
WQ_UNBOUND | WQ_FREEZABLE, 0, dev->name);
@ -347,10 +342,15 @@ static int wg_newlink(struct net *src_net, struct net_device *dev,
if (ret < 0)
goto err_free_encrypt_queue;
ret = wg_ratelimiter_init();
ret = wg_packet_queue_init(&wg->handshake_queue, wg_packet_handshake_receive_worker,
MAX_QUEUED_INCOMING_HANDSHAKES);
if (ret < 0)
goto err_free_decrypt_queue;
ret = wg_ratelimiter_init();
if (ret < 0)
goto err_free_handshake_queue;
ret = register_netdevice(dev);
if (ret < 0)
goto err_uninit_ratelimiter;
@ -367,18 +367,18 @@ static int wg_newlink(struct net *src_net, struct net_device *dev,
err_uninit_ratelimiter:
wg_ratelimiter_uninit();
err_free_handshake_queue:
wg_packet_queue_free(&wg->handshake_queue, false);
err_free_decrypt_queue:
wg_packet_queue_free(&wg->decrypt_queue);
wg_packet_queue_free(&wg->decrypt_queue, false);
err_free_encrypt_queue:
wg_packet_queue_free(&wg->encrypt_queue);
wg_packet_queue_free(&wg->encrypt_queue, false);
err_destroy_packet_crypt:
destroy_workqueue(wg->packet_crypt_wq);
err_destroy_handshake_send:
destroy_workqueue(wg->handshake_send_wq);
err_destroy_handshake_receive:
destroy_workqueue(wg->handshake_receive_wq);
err_free_incoming_handshakes:
free_percpu(wg->incoming_handshakes_worker);
err_free_tstats:
free_percpu(dev->tstats);
err_free_index_hashtable:
@ -398,6 +398,7 @@ static struct rtnl_link_ops link_ops __read_mostly = {
static void wg_netns_pre_exit(struct net *net)
{
struct wg_device *wg;
struct wg_peer *peer;
rtnl_lock();
list_for_each_entry(wg, &device_list, device_list) {
@ -407,6 +408,8 @@ static void wg_netns_pre_exit(struct net *net)
mutex_lock(&wg->device_update_lock);
rcu_assign_pointer(wg->creating_net, NULL);
wg_socket_reinit(wg, NULL, NULL);
list_for_each_entry(peer, &wg->peer_list, peer_list)
wg_socket_clear_peer_endpoint_src(peer);
mutex_unlock(&wg->device_update_lock);
}
}

9
drivers/net/wireguard/device.h
View File

@ -39,21 +39,18 @@ struct prev_queue {
struct wg_device {
struct net_device *dev;
struct crypt_queue encrypt_queue, decrypt_queue;
struct crypt_queue encrypt_queue, decrypt_queue, handshake_queue;
struct sock __rcu *sock4, *sock6;
struct net __rcu *creating_net;
struct noise_static_identity static_identity;
struct workqueue_struct *handshake_receive_wq, *handshake_send_wq;
struct workqueue_struct *packet_crypt_wq;
struct sk_buff_head incoming_handshakes;
int incoming_handshake_cpu;
struct multicore_worker __percpu *incoming_handshakes_worker;
struct workqueue_struct *packet_crypt_wq,*handshake_receive_wq, *handshake_send_wq;
struct cookie_checker cookie_checker;
struct pubkey_hashtable *peer_hashtable;
struct index_hashtable *index_hashtable;
struct allowedips peer_allowedips;
struct mutex device_update_lock, socket_update_lock;
struct list_head device_list, peer_list;
atomic_t handshake_queue_len;
unsigned int num_peers, device_update_gen;
u32 fwmark;
u16 incoming_port;

8
drivers/net/wireguard/main.c
View File

@ -17,7 +17,7 @@
#include <linux/genetlink.h>
#include <net/rtnetlink.h>
static int __init mod_init(void)
static int __init wg_mod_init(void)
{
int ret;
@ -60,7 +60,7 @@ err_allowedips:
return ret;
}
static void __exit mod_exit(void)
static void __exit wg_mod_exit(void)
{
wg_genetlink_uninit();
wg_device_uninit();
@ -68,8 +68,8 @@ static void __exit mod_exit(void)
wg_allowedips_slab_uninit();
}
module_init(mod_init);
module_exit(mod_exit);
module_init(wg_mod_init);
module_exit(wg_mod_exit);
MODULE_LICENSE("GPL v2");
MODULE_DESCRIPTION("WireGuard secure network tunnel");
MODULE_AUTHOR("Jason A. Donenfeld <Jason@zx2c4.com>");

6
drivers/net/wireguard/queueing.c
View File

@ -38,11 +38,11 @@ int wg_packet_queue_init(struct crypt_queue *queue, work_func_t function,
return 0;
}
void wg_packet_queue_free(struct crypt_queue *queue)
void wg_packet_queue_free(struct crypt_queue *queue, bool purge)
{
free_percpu(queue->worker);
WARN_ON(!__ptr_ring_empty(&queue->ring));
ptr_ring_cleanup(&queue->ring, NULL);
WARN_ON(!purge && !__ptr_ring_empty(&queue->ring));
ptr_ring_cleanup(&queue->ring, purge ? (void(*)(void*))kfree_skb : NULL);
}
#define NEXT(skb) ((skb)->prev)

2
drivers/net/wireguard/queueing.h
View File

@ -23,7 +23,7 @@ struct sk_buff;
/* queueing.c APIs: */
int wg_packet_queue_init(struct crypt_queue *queue, work_func_t function,
unsigned int len);
void wg_packet_queue_free(struct crypt_queue *queue);
void wg_packet_queue_free(struct crypt_queue *queue, bool purge);
struct multicore_worker __percpu *
wg_packet_percpu_multicore_worker_alloc(work_func_t function, void *ptr);

4
drivers/net/wireguard/ratelimiter.c
View File

@ -176,12 +176,12 @@ int wg_ratelimiter_init(void)
(1U << 14) / sizeof(struct hlist_head)));
max_entries = table_size * 8;
table_v4 = kvzalloc(table_size * sizeof(*table_v4), GFP_KERNEL);
table_v4 = kvcalloc(table_size, sizeof(*table_v4), GFP_KERNEL);
if (unlikely(!table_v4))
goto err_kmemcache;
#if IS_ENABLED(CONFIG_IPV6)
table_v6 = kvzalloc(table_size * sizeof(*table_v6), GFP_KERNEL);
table_v6 = kvcalloc(table_size, sizeof(*table_v6), GFP_KERNEL);
if (unlikely(!table_v6)) {
kvfree(table_v4);
goto err_kmemcache;

37
drivers/net/wireguard/receive.c
View File

@ -116,8 +116,8 @@ static void wg_receive_handshake_packet(struct wg_device *wg,
return;
}
under_load = skb_queue_len(&wg->incoming_handshakes) >=
MAX_QUEUED_INCOMING_HANDSHAKES / 8;
under_load = atomic_read(&wg->handshake_queue_len) >=
MAX_QUEUED_INCOMING_HANDSHAKES / 8;
if (under_load) {
last_under_load = ktime_get_coarse_boottime_ns();
} else if (last_under_load) {
@ -212,13 +212,14 @@ static void wg_receive_handshake_packet(struct wg_device *wg,
void wg_packet_handshake_receive_worker(struct work_struct *work)
{
struct wg_device *wg = container_of(work, struct multicore_worker,
work)->ptr;
struct crypt_queue *queue = container_of(work, struct multicore_worker, work)->ptr;
struct wg_device *wg = container_of(queue, struct wg_device, handshake_queue);
struct sk_buff *skb;
while ((skb = skb_dequeue(&wg->incoming_handshakes)) != NULL) {
while ((skb = ptr_ring_consume_bh(&queue->ring)) != NULL) {
wg_receive_handshake_packet(wg, skb);
dev_kfree_skb(skb);
atomic_dec(&wg->handshake_queue_len);
cond_resched();
}
}
@ -553,22 +554,28 @@ void wg_packet_receive(struct wg_device *wg, struct sk_buff *skb)
case cpu_to_le32(MESSAGE_HANDSHAKE_INITIATION):
case cpu_to_le32(MESSAGE_HANDSHAKE_RESPONSE):
case cpu_to_le32(MESSAGE_HANDSHAKE_COOKIE): {
int cpu;
int cpu, ret = -EBUSY;
if (skb_queue_len(&wg->incoming_handshakes) >
MAX_QUEUED_INCOMING_HANDSHAKES ||
unlikely(!rng_is_initialized())) {
if (unlikely(!rng_is_initialized()))
goto drop;
if (atomic_read(&wg->handshake_queue_len) > MAX_QUEUED_INCOMING_HANDSHAKES / 2) {
if (spin_trylock_bh(&wg->handshake_queue.ring.producer_lock)) {
ret = __ptr_ring_produce(&wg->handshake_queue.ring, skb);
spin_unlock_bh(&wg->handshake_queue.ring.producer_lock);
}
} else
ret = ptr_ring_produce_bh(&wg->handshake_queue.ring, skb);
if (ret) {
drop:
net_dbg_skb_ratelimited("%s: Dropping handshake packet from %pISpfsc\n",
wg->dev->name, skb);
goto err;
}
skb_queue_tail(&wg->incoming_handshakes, skb);
/* Queues up a call to packet_process_queued_handshake_
* packets(skb):
*/
cpu = wg_cpumask_next_online(&wg->incoming_handshake_cpu);
atomic_inc(&wg->handshake_queue_len);
cpu = wg_cpumask_next_online(&wg->handshake_queue.last_cpu);
/* Queues up a call to packet_process_queued_handshake_packets(skb): */
queue_work_on(cpu, wg->handshake_receive_wq,
&per_cpu_ptr(wg->incoming_handshakes_worker, cpu)->work);
&per_cpu_ptr(wg->handshake_queue.worker, cpu)->work);
break;
}
case cpu_to_le32(MESSAGE_DATA):

2
drivers/net/wireguard/socket.c
View File

@ -308,7 +308,7 @@ void wg_socket_clear_peer_endpoint_src(struct wg_peer *peer)
{
write_lock_bh(&peer->endpoint_lock);
memset(&peer->endpoint.src6, 0, sizeof(peer->endpoint.src6));
dst_cache_reset(&peer->endpoint_cache);
dst_cache_reset_now(&peer->endpoint_cache);
write_unlock_bh(&peer->endpoint_lock);
}

14
include/linux/siphash.h
View File

@ -27,9 +27,7 @@ static inline bool siphash_key_is_zero(const siphash_key_t *key)
}
u64 __siphash_aligned(const void *data, size_t len, const siphash_key_t *key);
#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
u64 __siphash_unaligned(const void *data, size_t len, const siphash_key_t *key);
#endif
u64 siphash_1u64(const u64 a, const siphash_key_t *key);
u64 siphash_2u64(const u64 a, const u64 b, const siphash_key_t *key);
@ -82,10 +80,9 @@ static inline u64 ___siphash_aligned(const __le64 *data, size_t len,
static inline u64 siphash(const void *data, size_t len,
const siphash_key_t *key)
{
#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
if (!IS_ALIGNED((unsigned long)data, SIPHASH_ALIGNMENT))
if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) ||
!IS_ALIGNED((unsigned long)data, SIPHASH_ALIGNMENT))
return __siphash_unaligned(data, len, key);
#endif
return ___siphash_aligned(data, len, key);
}
@ -96,10 +93,8 @@ typedef struct {
u32 __hsiphash_aligned(const void *data, size_t len,
const hsiphash_key_t *key);
#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
u32 __hsiphash_unaligned(const void *data, size_t len,
const hsiphash_key_t *key);
#endif
u32 hsiphash_1u32(const u32 a, const hsiphash_key_t *key);
u32 hsiphash_2u32(const u32 a, const u32 b, const hsiphash_key_t *key);
@ -135,10 +130,9 @@ static inline u32 ___hsiphash_aligned(const __le32 *data, size_t len,
static inline u32 hsiphash(const void *data, size_t len,
const hsiphash_key_t *key)
{
#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
if (!IS_ALIGNED((unsigned long)data, HSIPHASH_ALIGNMENT))
if (IS_ENABLED(CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS) ||
!IS_ALIGNED((unsigned long)data, HSIPHASH_ALIGNMENT))
return __hsiphash_unaligned(data, len, key);
#endif
return ___hsiphash_aligned(data, len, key);
}

11
include/net/dst_cache.h
View File

@ -79,6 +79,17 @@ static inline void dst_cache_reset(struct dst_cache *dst_cache)
dst_cache->reset_ts = jiffies;
}
/**
* dst_cache_reset_now - invalidate the cache contents immediately
* @dst_cache: the cache
*
* The caller must be sure there are no concurrent users, as this frees
* all dst_cache users immediately, rather than waiting for the next
* per-cpu usage like dst_cache_reset does. Most callers should use the
* higher speed lazily-freed dst_cache_reset function instead.
*/
void dst_cache_reset_now(struct dst_cache *dst_cache);
/**
* dst_cache_init - initialize the cache, allocating the required storage
* @dst_cache: the cache

12
lib/siphash.c
View File

@ -49,6 +49,7 @@
SIPROUND; \
return (v0 ^ v1) ^ (v2 ^ v3);
#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
u64 __siphash_aligned(const void *data, size_t len, const siphash_key_t *key)
{
const u8 *end = data + len - (len % sizeof(u64));
@ -80,8 +81,8 @@ u64 __siphash_aligned(const void *data, size_t len, const siphash_key_t *key)
POSTAMBLE
}
EXPORT_SYMBOL(__siphash_aligned);
#endif
#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
u64 __siphash_unaligned(const void *data, size_t len, const siphash_key_t *key)
{
const u8 *end = data + len - (len % sizeof(u64));
@ -113,7 +114,6 @@ u64 __siphash_unaligned(const void *data, size_t len, const siphash_key_t *key)
POSTAMBLE
}
EXPORT_SYMBOL(__siphash_unaligned);
#endif
/**
* siphash_1u64 - compute 64-bit siphash PRF value of a u64
@ -250,6 +250,7 @@ EXPORT_SYMBOL(siphash_3u32);
HSIPROUND; \
return (v0 ^ v1) ^ (v2 ^ v3);
#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
u32 __hsiphash_aligned(const void *data, size_t len, const hsiphash_key_t *key)
{
const u8 *end = data + len - (len % sizeof(u64));
@ -280,8 +281,8 @@ u32 __hsiphash_aligned(const void *data, size_t len, const hsiphash_key_t *key)
HPOSTAMBLE
}
EXPORT_SYMBOL(__hsiphash_aligned);
#endif
#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
u32 __hsiphash_unaligned(const void *data, size_t len,
const hsiphash_key_t *key)
{
@ -313,7 +314,6 @@ u32 __hsiphash_unaligned(const void *data, size_t len,
HPOSTAMBLE
}
EXPORT_SYMBOL(__hsiphash_unaligned);
#endif
/**
* hsiphash_1u32 - compute 64-bit hsiphash PRF value of a u32
@ -418,6 +418,7 @@ EXPORT_SYMBOL(hsiphash_4u32);
HSIPROUND; \
return v1 ^ v3;
#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
u32 __hsiphash_aligned(const void *data, size_t len, const hsiphash_key_t *key)
{
const u8 *end = data + len - (len % sizeof(u32));
@ -438,8 +439,8 @@ u32 __hsiphash_aligned(const void *data, size_t len, const hsiphash_key_t *key)
HPOSTAMBLE
}
EXPORT_SYMBOL(__hsiphash_aligned);
#endif
#ifndef CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
u32 __hsiphash_unaligned(const void *data, size_t len,
const hsiphash_key_t *key)
{
@ -461,7 +462,6 @@ u32 __hsiphash_unaligned(const void *data, size_t len,
HPOSTAMBLE
}
EXPORT_SYMBOL(__hsiphash_unaligned);
#endif
/**
* hsiphash_1u32 - compute 32-bit hsiphash PRF value of a u32

19
net/core/dst_cache.c
View File

@ -162,3 +162,22 @@ void dst_cache_destroy(struct dst_cache *dst_cache)
free_percpu(dst_cache->cache);
}
EXPORT_SYMBOL_GPL(dst_cache_destroy);
void dst_cache_reset_now(struct dst_cache *dst_cache)
{
int i;
if (!dst_cache->cache)
return;
dst_cache->reset_ts = jiffies;
for_each_possible_cpu(i) {
struct dst_cache_pcpu *idst = per_cpu_ptr(dst_cache->cache, i);
struct dst_entry *dst = idst->dst;
idst->cookie = 0;
idst->dst = NULL;
dst_release(dst);
}
}
EXPORT_SYMBOL_GPL(dst_cache_reset_now);

30
tools/testing/selftests/wireguard/netns.sh
View File

@ -276,7 +276,11 @@ n0 ping -W 1 -c 1 192.168.241.2
n1 wg set wg0 peer "$pub2" endpoint 192.168.241.2:7
ip2 link del wg0
ip2 link del wg1
! n0 ping -W 1 -c 10 -f 192.168.241.2 || false # Should not crash kernel
read _ _ tx_bytes_before < <(n0 wg show wg1 transfer)
! n0 ping -W 1 -c 10 -f 192.168.241.2 || false
sleep 1
read _ _ tx_bytes_after < <(n0 wg show wg1 transfer)
(( tx_bytes_after - tx_bytes_before < 70000 ))
ip0 link del wg1
ip1 link del wg0
@ -609,6 +613,28 @@ ip0 link set wg0 up
kill $ncat_pid
ip0 link del wg0
# Ensure that dst_cache references don't outlive netns lifetime
ip1 link add dev wg0 type wireguard
ip2 link add dev wg0 type wireguard
configure_peers
ip1 link add veth1 type veth peer name veth2
ip1 link set veth2 netns $netns2
ip1 addr add fd00:aa::1/64 dev veth1
ip2 addr add fd00:aa::2/64 dev veth2
ip1 link set veth1 up
ip2 link set veth2 up
waitiface $netns1 veth1
waitiface $netns2 veth2
ip1 -6 route add default dev veth1 via fd00:aa::2
ip2 -6 route add default dev veth2 via fd00:aa::1
n1 wg set wg0 peer "$pub2" endpoint [fd00:aa::2]:2
n2 wg set wg0 peer "$pub1" endpoint [fd00:aa::1]:1
n1 ping6 -c 1 fd00::2
pp ip netns delete $netns1
pp ip netns delete $netns2
pp ip netns add $netns1
pp ip netns add $netns2
# Ensure there aren't circular reference loops
ip1 link add wg1 type wireguard
ip2 link add wg2 type wireguard
@ -627,7 +653,7 @@ while read -t 0.1 -r line 2>/dev/null || [[ $? -ne 142 ]]; do
done < /dev/kmsg
alldeleted=1
for object in "${!objects[@]}"; do
if [[ ${objects["$object"]} != *createddestroyed ]]; then
if [[ ${objects["$object"]} != *createddestroyed && ${objects["$object"]} != *createdcreateddestroyeddestroyed ]]; then
echo "Error: $object: merely ${objects["$object"]}" >&3
alldeleted=0
fi

2
tools/testing/selftests/wireguard/qemu/debug.config
View File

@ -47,7 +47,7 @@ CONFIG_DEBUG_ATOMIC_SLEEP=y
CONFIG_TRACE_IRQFLAGS=y
CONFIG_DEBUG_BUGVERBOSE=y
CONFIG_DEBUG_LIST=y
CONFIG_DEBUG_PI_LIST=y
CONFIG_DEBUG_PLIST=y
CONFIG_PROVE_RCU=y
CONFIG_SPARSE_RCU_POINTER=y
CONFIG_RCU_CPU_STALL_TIMEOUT=21

1
tools/testing/selftests/wireguard/qemu/kernel.config
View File

@ -66,6 +66,7 @@ CONFIG_PROC_SYSCTL=y
CONFIG_SYSFS=y
CONFIG_TMPFS=y
CONFIG_CONSOLE_LOGLEVEL_DEFAULT=15
CONFIG_LOG_BUF_SHIFT=18
CONFIG_PRINTK_TIME=y
CONFIG_BLK_DEV_INITRD=y
CONFIG_LEGACY_VSYSCALL_NONE=y