qemu/net
David Woodhouse 84f85eb95f net: do not delete nics in net_cleanup()
In net_cleanup() we only need to delete the netdevs, as those may have
state which outlives Qemu when it exits, and thus may actually need to
be cleaned up on exit.

The nics, on the other hand, are owned by the device which created them.
Most devices don't bother to clean up on exit because they don't have
any state which will outlive Qemu... but XenBus devices do need to clean
up their nodes in XenStore, and do have an exit handler to delete them.

When the XenBus exit handler destroys the xen-net-device, it attempts
to delete its nic after net_cleanup() had already done so. And crashes.

Fix this by only deleting netdevs as we walk the list. As the comment
notes, we can't use QTAILQ_FOREACH_SAFE() as each deletion may remove
*multiple* entries, including the "safely" saved 'next' pointer. But
we can store the *previous* entry, since nics are safe.

Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
Signed-off-by: Jason Wang <jasowang@redhat.com>
2023-11-21 15:42:34 +08:00
..
can
af-xdp.c net: add initial support for AF_XDP network backend 2023-09-18 14:36:13 +08:00
announce.c
checksum.c misc/other: spelling fixes 2023-09-08 13:08:52 +03:00
clients.h net: add initial support for AF_XDP network backend 2023-09-18 14:36:13 +08:00
colo-compare.c
colo-compare.h
colo.c
colo.h
dgram.c
dump.c net/dump: Avoid variable length array 2023-09-18 14:36:13 +08:00
eth.c net/eth: Clean up local variable shadowing 2023-09-29 10:07:16 +02:00
filter-buffer.c
filter-mirror.c
filter-replay.c
filter-rewriter.c
filter.c misc/other: spelling fixes 2023-09-08 13:08:52 +03:00
hub.c
hub.h
l2tpv3.c
meson.build net: add initial support for AF_XDP network backend 2023-09-18 14:36:13 +08:00
net-hmp-cmds.c
net.c net: do not delete nics in net_cleanup() 2023-11-21 15:42:34 +08:00
netmap.c tap: Add USO support to tap device. 2023-09-18 14:36:13 +08:00
queue.c
slirp.c migration: Use VMSTATE_INSTANCE_ID_ANY for slirp 2023-11-01 16:13:58 +01:00
socket.c
stream.c
tap-bsd.c tap: Add check for USO features 2023-09-18 14:36:13 +08:00
tap-linux.c tap: Add check for USO features 2023-09-18 14:36:13 +08:00
tap-linux.h tap: Add USO support to tap device. 2023-09-18 14:36:13 +08:00
tap-solaris.c tap: Add check for USO features 2023-09-18 14:36:13 +08:00
tap-stub.c tap: Add check for USO features 2023-09-18 14:36:13 +08:00
tap-win32.c tap: Add USO support to tap device. 2023-09-18 14:36:13 +08:00
tap.c net/tap: Avoid variable-length array 2023-09-18 14:36:13 +08:00
tap_int.h tap: Add check for USO features 2023-09-18 14:36:13 +08:00
trace-events
trace.h
util.c
util.h
vde.c
vhost-user-stub.c
vhost-user.c
vhost-vdpa-stub.c
vhost-vdpa.c vdpa: Allow VIRTIO_NET_F_RSS in SVQ 2023-11-07 03:39:11 -05:00
vmnet-bridged.m
vmnet-common.m
vmnet-host.c
vmnet-shared.c
vmnet_int.h