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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-14 16:40:27 -0800 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-12-14 16:40:27 -0800 |
commit | f9b4240b074730f41c1ef8e0d695d10fb5bb1e27 (patch) | |
tree | 5e0757a41a8c47628f6e2e8968a65bb194b368e4 /net | |
parent | 6d93a1971a0ded67887eeab8d00a02074490f071 (diff) | |
parent | aabe19b8279340c43294688b4d9527a893c60463 (diff) | |
download | linux-f9b4240b074730f41c1ef8e0d695d10fb5bb1e27.tar.bz2 |
Merge tag 'fixes-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux
Pull misc fixes from Christian Brauner:
"This contains several fixes which felt worth being combined into a
single branch:
- Use put_nsproxy() instead of open-coding it switch_task_namespaces()
- Kirill's work to unify lifecycle management for all namespaces. The
lifetime counters are used identically for all namespaces types.
Namespaces may of course have additional unrelated counters and
these are not altered. This work allows us to unify the type of the
counters and reduces maintenance cost by moving the counter in one
place and indicating that basic lifetime management is identical
for all namespaces.
- Peilin's fix adding three byte padding to Dmitry's
PTRACE_GET_SYSCALL_INFO uapi struct to prevent an info leak.
- Two smal patches to convert from the /* fall through */ comment
annotation to the fallthrough keyword annotation which I had taken
into my branch and into -next before df561f6688fe ("treewide: Use
fallthrough pseudo-keyword") made it upstream which fixed this
tree-wide.
Since I didn't want to invalidate all testing for other commits I
didn't rebase and kept them"
* tag 'fixes-v5.11' of git://git.kernel.org/pub/scm/linux/kernel/git/brauner/linux:
nsproxy: use put_nsproxy() in switch_task_namespaces()
sys: Convert to the new fallthrough notation
signal: Convert to the new fallthrough notation
time: Use generic ns_common::count
cgroup: Use generic ns_common::count
mnt: Use generic ns_common::count
user: Use generic ns_common::count
pid: Use generic ns_common::count
ipc: Use generic ns_common::count
uts: Use generic ns_common::count
net: Use generic ns_common::count
ns: Add a common refcount into ns_common
ptrace: Prevent kernel-infoleak in ptrace_get_syscall_info()
Diffstat (limited to 'net')
-rw-r--r-- | net/core/net-sysfs.c | 6 | ||||
-rw-r--r-- | net/core/net_namespace.c | 6 | ||||
-rw-r--r-- | net/ipv4/inet_timewait_sock.c | 4 | ||||
-rw-r--r-- | net/ipv4/tcp_metrics.c | 2 |
4 files changed, 9 insertions, 9 deletions
diff --git a/net/core/net-sysfs.c b/net/core/net-sysfs.c index 94fff0700bdd..999b70c59761 100644 --- a/net/core/net-sysfs.c +++ b/net/core/net-sysfs.c @@ -1027,7 +1027,7 @@ net_rx_queue_update_kobjects(struct net_device *dev, int old_num, int new_num) while (--i >= new_num) { struct kobject *kobj = &dev->_rx[i].kobj; - if (!refcount_read(&dev_net(dev)->count)) + if (!refcount_read(&dev_net(dev)->ns.count)) kobj->uevent_suppress = 1; if (dev->sysfs_rx_queue_group) sysfs_remove_group(kobj, dev->sysfs_rx_queue_group); @@ -1605,7 +1605,7 @@ netdev_queue_update_kobjects(struct net_device *dev, int old_num, int new_num) while (--i >= new_num) { struct netdev_queue *queue = dev->_tx + i; - if (!refcount_read(&dev_net(dev)->count)) + if (!refcount_read(&dev_net(dev)->ns.count)) queue->kobj.uevent_suppress = 1; #ifdef CONFIG_BQL sysfs_remove_group(&queue->kobj, &dql_group); @@ -1852,7 +1852,7 @@ void netdev_unregister_kobject(struct net_device *ndev) { struct device *dev = &ndev->dev; - if (!refcount_read(&dev_net(ndev)->count)) + if (!refcount_read(&dev_net(ndev)->ns.count)) dev_set_uevent_suppress(dev, 1); kobject_get(&dev->kobj); diff --git a/net/core/net_namespace.c b/net/core/net_namespace.c index dbc66b896287..2ef3b4557f40 100644 --- a/net/core/net_namespace.c +++ b/net/core/net_namespace.c @@ -45,7 +45,7 @@ static struct key_tag init_net_key_domain = { .usage = REFCOUNT_INIT(1) }; #endif struct net init_net = { - .count = REFCOUNT_INIT(1), + .ns.count = REFCOUNT_INIT(1), .dev_base_head = LIST_HEAD_INIT(init_net.dev_base_head), #ifdef CONFIG_KEYS .key_domain = &init_net_key_domain, @@ -249,7 +249,7 @@ int peernet2id_alloc(struct net *net, struct net *peer, gfp_t gfp) { int id; - if (refcount_read(&net->count) == 0) + if (refcount_read(&net->ns.count) == 0) return NETNSA_NSID_NOT_ASSIGNED; spin_lock_bh(&net->nsid_lock); @@ -329,7 +329,7 @@ static __net_init int setup_net(struct net *net, struct user_namespace *user_ns) int error = 0; LIST_HEAD(net_exit_list); - refcount_set(&net->count, 1); + refcount_set(&net->ns.count, 1); refcount_set(&net->passive, 1); get_random_bytes(&net->hash_mix, sizeof(u32)); net->dev_base_seq = 1; diff --git a/net/ipv4/inet_timewait_sock.c b/net/ipv4/inet_timewait_sock.c index c411c87ae865..437afe392e66 100644 --- a/net/ipv4/inet_timewait_sock.c +++ b/net/ipv4/inet_timewait_sock.c @@ -272,14 +272,14 @@ restart: continue; tw = inet_twsk(sk); if ((tw->tw_family != family) || - refcount_read(&twsk_net(tw)->count)) + refcount_read(&twsk_net(tw)->ns.count)) continue; if (unlikely(!refcount_inc_not_zero(&tw->tw_refcnt))) continue; if (unlikely((tw->tw_family != family) || - refcount_read(&twsk_net(tw)->count))) { + refcount_read(&twsk_net(tw)->ns.count))) { inet_twsk_put(tw); goto restart; } diff --git a/net/ipv4/tcp_metrics.c b/net/ipv4/tcp_metrics.c index 6b27c481fe18..0588b004ddac 100644 --- a/net/ipv4/tcp_metrics.c +++ b/net/ipv4/tcp_metrics.c @@ -887,7 +887,7 @@ static void tcp_metrics_flush_all(struct net *net) pp = &hb->chain; for (tm = deref_locked(*pp); tm; tm = deref_locked(*pp)) { match = net ? net_eq(tm_net(tm), net) : - !refcount_read(&tm_net(tm)->count); + !refcount_read(&tm_net(tm)->ns.count); if (match) { *pp = tm->tcpm_next; kfree_rcu(tm, rcu_head); |