Seth Forshee 787468ee7a vsock: remove vsock from connected table when connect is interrupted by a signal ... commit b9208492fc upstream. vsock_connect() expects that the socket could already be in the TCP_ESTABLISHED state when the connecting task wakes up with a signal pending. If this happens the socket will be in the connected table, and it is not removed when the socket state is reset. In this situation it's common for the process to retry connect(), and if the connection is successful the socket will be added to the connected table a second time, corrupting the list. Prevent this by calling vsock_remove_connected() if a signal is received while waiting for a connection. This is harmless if the socket is not in the connected table, and if it is in the table then removing it will prevent list corruption from a double add. Note for backporting: this patch requires d5afa82c97 ("vsock: correct removal of socket from the list"), which is in all current stable trees except 4.9.y. Fixes: d021c34405 ("VSOCK: Introduce VM Sockets") Signed-off-by: Seth Forshee <sforshee@digitalocean.com> Reviewed-by: Stefano Garzarella <sgarzare@redhat.com> Link: https://lore.kernel.org/r/20220217141312.2297547-1-sforshee@digitalocean.com Signed-off-by: Jakub Kicinski <kuba@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-02-23 12:03:09 +01:00
..
Kconfig	vsock: add vsock_loopback transport	2019-12-11 15:01:23 -08:00
Makefile	vsock: add vsock_loopback transport	2019-12-11 15:01:23 -08:00
af_vsock.c	vsock: remove vsock from connected table when connect is interrupted by a signal	2022-02-23 12:03:09 +01:00
af_vsock_tap.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
diag.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 321	2019-06-05 17:37:05 +02:00
hyperv_transport.c	Drivers: hv: vmbus: Copy packets sent by Hyper-V out of the ring buffer	2021-05-14 17:37:46 +00:00
virtio_transport.c	vsock/virtio: avoid potential deadlock when vsock device remove	2021-08-12 10:57:27 -07:00
virtio_transport_common.c	virtio/vsock: fix the transport to work with VMADDR_CID_ANY	2021-12-22 09:32:39 +01:00
vmci_transport.c	net: sock: introduce sk_error_report	2021-06-29 11:28:21 -07:00
vmci_transport.h	vsock: handle buffer_size sockopts in the core	2019-11-14 18:12:18 -08:00
vmci_transport_notify.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 321	2019-06-05 17:37:05 +02:00
vmci_transport_notify.h	vsock: remove include/linux/vm_sockets.h file	2019-11-14 18:12:17 -08:00
vmci_transport_notify_qstate.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 321	2019-06-05 17:37:05 +02:00
vsock_addr.c	vsock_addr: Check for supported flag values	2020-12-14 19:33:39 -08:00
vsock_loopback.c	vsock/loopback: enable SEQPACKET for transport	2021-06-11 13:32:47 -07:00