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| author | Cong Wang <xiyou.wangcong@gmail.com> | 2017-10-24 15:30:37 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-10-26 17:45:58 +0900 |
| commit | c1eef220c1760762753b602c382127bfccee226d (patch) | |
| tree | e2a603686a2f0957a209cc553055b0364cbed72a /net/vmw_vsock | |
| parent | 3c91b0c1de8d013490bbc41ce9ee8810ea5baddd (diff) | |
| download | linux-c1eef220c1760762753b602c382127bfccee226d.tar.bz2 | |
vsock: always call vsock_init_tables()
Although CONFIG_VSOCKETS_DIAG depends on CONFIG_VSOCKETS,
vsock_init_tables() is not always called, it is called only
if other modules call its caller. Therefore if we only
enable CONFIG_VSOCKETS_DIAG, it would crash kernel on uninitialized
vsock_bind_table.
This patch fixes it by moving vsock_init_tables() to its own
module_init().
Fixes: 413a4317aca7 ("VSOCK: add sock_diag interface")
Reported-by: syzkaller bot
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Jorgen Hansen <jhansen@vmware.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/vmw_vsock')
| -rw-r--r-- | net/vmw_vsock/af_vsock.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/net/vmw_vsock/af_vsock.c b/net/vmw_vsock/af_vsock.c index 98359c19522f..5d28abf87fbf 100644 --- a/net/vmw_vsock/af_vsock.c +++ b/net/vmw_vsock/af_vsock.c @@ -195,7 +195,7 @@ static int vsock_auto_bind(struct vsock_sock *vsk) return __vsock_bind(sk, &local_addr); } -static void vsock_init_tables(void) +static int __init vsock_init_tables(void) { int i; @@ -204,6 +204,7 @@ static void vsock_init_tables(void) for (i = 0; i < ARRAY_SIZE(vsock_connected_table); i++) INIT_LIST_HEAD(&vsock_connected_table[i]); + return 0; } static void __vsock_insert_bound(struct list_head *list, @@ -1957,8 +1958,6 @@ int __vsock_core_init(const struct vsock_transport *t, struct module *owner) vsock_proto.owner = owner; transport = t; - vsock_init_tables(); - vsock_device.minor = MISC_DYNAMIC_MINOR; err = misc_register(&vsock_device); if (err) { @@ -2019,6 +2018,8 @@ const struct vsock_transport *vsock_core_get_transport(void) } EXPORT_SYMBOL_GPL(vsock_core_get_transport); +module_init(vsock_init_tables); + MODULE_AUTHOR("VMware, Inc."); MODULE_DESCRIPTION("VMware Virtual Socket Family"); MODULE_VERSION("1.0.2.0-k"); |