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Peter Maydell a01344d9d7 net: pad packets to minimum length in qemu_receive_packet() ... In commits like 969e50b61a ("net: Pad short frames to minimum size before sending from SLiRP/TAP") we switched away from requiring network devices to handle short frames to instead having the net core code do the padding of short frames out to the ETH_ZLEN minimum size. We then dropped the code for handling short frames from the network devices in a series of commits like 140eae9c8f ("hw/net: e1000: Remove the logic of padding short frames in the receive path"). This missed one route where the device's receive code can still see a short frame: if the device is in loopback mode and it transmits a short frame via the qemu_receive_packet() function, this will be fed back into its own receive code without being padded. Add the padding logic to qemu_receive_packet(). This fixes a buffer overrun which can be triggered in the e1000_receive_iov() logic via the loopback code path. Other devices that use qemu_receive_packet() to implement loopback are cadence_gem, dp8393x, lan9118, msf2-emac, pcnet, rtl8139 and sungem. Cc: qemu-stable@nongnu.org Resolves: https://gitlab.com/qemu-project/qemu/-/issues/3043 Reviewed-by: Akihiko Odaki <odaki@rsg.ci.i.u-tokyo.ac.jp> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Jason Wang <jasowang@redhat.com>		3 weeks ago
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can	qom: Make InterfaceInfo[] uses const	7 months ago
af-xdp.c	net/af-xdp: Support pinned map path for AF_XDP sockets	5 months ago
announce.c	qapi net: Elide redundant has_FOO in generated C	3 years ago
checksum.c	net: checksum: Convert data to void *	1 year ago
clients.h	net: Add passt network backend	5 months ago
colo-compare.c	char: rename CharBackend->CharFrontend	1 month ago
colo-compare.h	Add the function of colo_compare_cleanup	5 years ago
colo-stubs.c	colo: move stubs out of stubs/	2 years ago
colo.c	net/colo.c: Fix the pointer issue reported by Coverity.	3 years ago
colo.h	net/colo.c: Fix the pointer issue reported by Coverity.	3 years ago
dgram.c	util: drop qemu_socket_try_set_nonblock()	3 months ago
dump.c	qom: Have class_init() take a const data argument	7 months ago
eth.c	net/eth: Clean up local variable shadowing	2 years ago
filter-buffer.c	qom: Have class_init() take a const data argument	7 months ago
filter-mirror.c	char: rename CharBackend->CharFrontend	1 month ago
filter-replay.c	qom: Have class_init() take a const data argument	7 months ago
filter-rewriter.c	qom: Have class_init() take a const data argument	7 months ago
filter.c	qom: Make InterfaceInfo[] uses const	7 months ago
hub.c	net/hub: make net_hub_port_cleanup idempotent	3 weeks ago
hub.h	…
l2tpv3.c	util: drop qemu_socket_set_nonblock()	3 months ago
meson.build	net: Add passt network backend	5 months ago
net-hmp-cmds.c	qapi: Move include/qapi/qmp/ to include/qobject/	10 months ago
net.c	net: pad packets to minimum length in qemu_receive_packet()	3 weeks ago
netmap.c	net: bundle all offloads in a single struct	2 months ago
passt.c	char: rename CharBackend->CharFrontend	1 month ago
queue.c	net: Remove deadcode	1 year ago
slirp.c	char: rename CharBackend->CharFrontend	1 month ago
socket.c	util: drop qemu_socket_try_set_nonblock()	3 months ago
stream.c	net/stream: remove deprecated 'reconnect' option	1 month ago
stream_data.c	util: drop qemu_socket_try_set_nonblock()	3 months ago
stream_data.h	net: Refactor stream logic for reuse in '-net passt'	5 months ago
tap-bsd.c	net: implement tunnel probing	2 months ago
tap-linux.c	net: implement UDP tunnel features offloading	2 months ago
tap-linux.h	net: implement tunnel probing	2 months ago
tap-solaris.c	net: implement tunnel probing	2 months ago
tap-stub.c	net: implement tunnel probing	2 months ago
tap-win32.c	net: Add get_vhost_net callback to NetClientInfo	5 months ago
tap.c	net: implement UDP tunnel features offloading	2 months ago
tap_int.h	net: implement tunnel probing	2 months ago
trace-events	vdpa: add trace event for vhost_vdpa_net_load_mq	2 years ago
trace.h	…
util.c	…
util.h	Replace config-time define HOST_WORDS_BIGENDIAN	4 years ago
vde.c	net: introduce qemu_set_info_str() function	3 years ago
vhost-user-stub.c	net: Add save_acked_features callback to vhost_net	5 months ago
vhost-user.c	char: rename CharBackend->CharFrontend	1 month ago
vhost-vdpa-stub.c	vhost-net-vdpa: add stubs for when no virtio-net device is present	3 years ago
vhost-vdpa.c	net/vdpa: fix potential fd leak in net_init_vhost_vdpa()	4 months ago
vmnet-bridged.m	net/vmnet: Drop ifdef for macOS versions older than 12.0	1 year ago
vmnet-common.m	error: Strip trailing '\n' from an error string argument	9 months ago
vmnet-host.c	net/vmnet: Drop ifdef for macOS versions older than 12.0	1 year ago
vmnet-shared.c	net/vmnet: Drop ifdef for macOS versions older than 12.0	1 year ago
vmnet_int.h	vmnet: stop recieving events when VM is stopped	3 years ago