linux/include
Jiyong Park 093f11b496 vsock: each transport cycles only on its own sockets
[ Upstream commit 8e6ed96376 ]

When iterating over sockets using vsock_for_each_connected_socket, make
sure that a transport filters out sockets that don't belong to the
transport.

There actually was an issue caused by this; in a nested VM
configuration, destroying the nested VM (which often involves the
closing of /dev/vhost-vsock if there was h2g connections to the nested
VM) kills not only the h2g connections, but also all existing g2h
connections to the (outmost) host which are totally unrelated.

Tested: Executed the following steps on Cuttlefish (Android running on a
VM) [1]: (1) Enter into an `adb shell` session - to have a g2h
connection inside the VM, (2) open and then close /dev/vhost-vsock by
`exec 3< /dev/vhost-vsock && exec 3<&-`, (3) observe that the adb
session is not reset.

[1] https://android.googlesource.com/device/google/cuttlefish/

Fixes: c0cfa2d8a7 ("vsock: add multi-transports support")
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Jiyong Park <jiyong@google.com>
Link: https://lore.kernel.org/r/20220311020017.1509316-1-jiyong@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2022-03-23 09:16:41 +01:00
..
acpi ACPICA: actypes.h: Expand the ACPI_ACCESS_ definitions 2022-01-27 11:04:49 +01:00
asm-generic bitops: protect find_first_{,zero}_bit properly 2022-01-27 11:05:34 +01:00
clocksource
crypto
drm
dt-bindings
keys
kunit
kvm
linux block: drop unused includes in <linux/genhd.h> 2022-03-16 14:23:46 +01:00
math-emu
media
memory
misc
net vsock: each transport cycles only on its own sockets 2022-03-23 09:16:41 +01:00
pcmcia
ras
rdma
scsi
soc
sound ALSA: hda: Fix potential deadlock at codec unbinding 2022-01-27 11:04:05 +01:00
target
trace SUNRPC: Fix sockaddr handling in svcsock_accept_class trace points 2022-03-08 19:12:37 +01:00
uapi HID: add mapping for KEY_ALL_APPLICATIONS 2022-03-08 19:12:53 +01:00
vdso
video
xen xen/gnttab: fix gnttab_end_foreign_access() without page specified 2022-03-11 12:22:37 +01:00