diff options
| author | Cong Wang <xiyou.wangcong@gmail.com> | 2018-08-06 11:06:02 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-08-22 07:48:35 +0200 |
| commit | 62209d1f272c2b134765301f279fda7364b07ddd (patch) | |
| tree | fb31c213da9cbb3b2fe28d27f79dc7d717b036df /include | |
| parent | 0adfdb9af8ec7cc0c8a35dfe8a20d6f8d27ddd08 (diff) | |
vsock: split dwork to avoid reinitializations
[ Upstream commit 455f05ecd2b219e9a216050796d30c830d9bc393 ]
syzbot reported that we reinitialize an active delayed
work in vsock_stream_connect():
ODEBUG: init active (active state 0) object type: timer_list hint:
delayed_work_timer_fn+0x0/0x90 kernel/workqueue.c:1414
WARNING: CPU: 1 PID: 11518 at lib/debugobjects.c:329
debug_print_object+0x16a/0x210 lib/debugobjects.c:326
The pattern is apparently wrong, we should only initialize
the dealyed work once and could repeatly schedule it. So we
have to move out the initializations to allocation side.
And to avoid confusion, we can split the shared dwork
into two, instead of re-using the same one.
Fixes: d021c344051a ("VSOCK: Introduce VM Sockets")
Reported-by: <syzbot+8a9b1bd330476a4f3db6@syzkaller.appspotmail.com>
Cc: Andy king <acking@vmware.com>
Cc: Stefan Hajnoczi <stefanha@redhat.com>
Cc: Jorgen Hansen <jhansen@vmware.com>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/net/af_vsock.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/include/net/af_vsock.h b/include/net/af_vsock.h index e9eb2d6791b3..f7a35fcaaaf6 100644 --- a/include/net/af_vsock.h +++ b/include/net/af_vsock.h @@ -62,7 +62,8 @@ struct vsock_sock { struct list_head pending_links; struct list_head accept_queue; bool rejected; - struct delayed_work dwork; + struct delayed_work connect_work; + struct delayed_work pending_work; u32 peer_shutdown; bool sent_request; bool ignore_connecting_rst; @@ -73,7 +74,6 @@ struct vsock_sock { s64 vsock_stream_has_data(struct vsock_sock *vsk); s64 vsock_stream_has_space(struct vsock_sock *vsk); -void vsock_pending_work(struct work_struct *work); struct sock *__vsock_create(struct net *net, struct socket *sock, struct sock *parent, |