Michael Chan 2b7c5eed19 net: Prevent infinite while loop in skb_tx_hash() ... commit 0c57eeecc5 upstream. Drivers call netdev_set_num_tc() and then netdev_set_tc_queue() to set the queue count and offset for each TC. So the queue count and offset for the TCs may be zero for a short period after dev->num_tc has been set. If a TX packet is being transmitted at this time in the code path netdev_pick_tx() -> skb_tx_hash(), skb_tx_hash() may see nonzero dev->num_tc but zero qcount for the TC. The while loop that keeps looping while hash >= qcount will not end. Fix it by checking the TC's qcount to be nonzero before using it. Fixes: eadec877ce ("net: Add support for subordinate traffic classes to netdev_pick_tx") Reviewed-by: Andy Gospodarek <gospo@broadcom.com> Signed-off-by: Michael Chan <michael.chan@broadcom.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2021-11-02 19:48:22 +01:00
..
bpf_sk_storage.c	bpf: Change bpf_sk_storage_*() to accept ARG_PTR_TO_BTF_ID_SOCK_COMMON	2020-09-25 13:58:01 -07:00
datagram.c	udp: fix skb_copy_and_csum_datagram with odd segment sizes	2021-02-17 11:02:28 +01:00
datagram.h
dev_addr_lists.c	net: core: add nested_level variable in net_device	2020-09-28 15:00:15 -07:00
dev_ioctl.c	net: fix dev_ifsioc_locked() race condition	2021-03-07 12:34:07 +01:00
dev.c	net: Prevent infinite while loop in skb_tx_hash()	2021-11-02 19:48:22 +01:00
devlink.c	devlink: Clear whole devlink_flash_notify struct	2021-09-15 09:50:40 +02:00
drop_monitor.c	drop_monitor: Perform cleanup upon probe registration failure	2021-03-30 14:31:57 +02:00
dst_cache.c
dst.c	net, bpf: Fix ip6ip6 crash with collect_md populated skbs	2021-03-30 14:32:05 +02:00
failover.c
fib_notifier.c
fib_rules.c	fib: Return the correct errno code	2021-06-18 10:00:06 +02:00
filter.c	bpf: Do not change gso_size during bpf_skb_change_proto()	2021-07-14 16:56:27 +02:00
flow_dissector.c	flow_dissector: Fix out-of-bounds warnings	2021-09-18 13:40:22 +02:00
flow_offload.c	net: Fix offloading indirect devices dependency on qdisc order creation	2021-09-18 13:40:30 +02:00
gen_estimator.c	net_sched: gen_estimator: support large ewma log	2021-01-27 11:55:23 +01:00
gen_stats.c
gro_cells.c	gro_cells: reduce number of synchronize_net() calls	2020-11-25 11:28:12 -08:00
hwbm.c
link_watch.c	net: linkwatch: fix failure to restore device state across suspend/resume	2021-08-18 08:59:13 +02:00
lwt_bpf.c	lwt_bpf: Replace preempt_disable() with migrate_disable()	2020-12-07 11:53:40 -08:00
lwtunnel.c
Makefile
neighbour.c	neighbour: allow NUD_NOARP entries to be forced GCed	2021-06-10 13:39:29 +02:00
net_namespace.c	net: make get_net_ns return error if NET_NS is disabled	2021-06-23 14:42:44 +02:00
net-procfs.c	net-sysfs: add backlog len and CPU id to softnet data	2020-09-21 13:56:37 -07:00
net-sysfs.c	net-sysfs: initialize uid and gid before calling net_ns_get_ownership	2021-11-02 19:48:22 +01:00
net-sysfs.h
net-traces.c
netclassid_cgroup.c
netevent.c
netpoll.c	net: Have netpoll bring-up DSA management interface	2020-11-18 11:04:11 -08:00
netprio_cgroup.c
page_pool.c	mm: fix struct page layout on 32-bit systems	2021-05-19 10:13:17 +02:00
pktgen.c	pktgen: fix misuse of BUG_ON() in pktgen_thread_worker()	2021-03-07 12:34:09 +01:00
ptp_classifier.c	ptp: Add generic ptp v2 header parsing function	2020-08-19 16:07:49 -07:00
request_sock.c
rtnetlink.c	rtnetlink: fix if_nlmsg_stats_size() under estimation	2021-10-13 10:04:28 +02:00
scm.c	fs: Add receive_fd() wrapper for __receive_fd()	2020-07-13 11:03:44 -07:00
secure_seq.c
skbuff.c	net: Fix zero-copy head len calculation.	2021-08-08 09:05:23 +02:00
skmsg.c	skmsg: Make sk_psock_destroy() static	2021-08-04 12:46:44 +02:00
sock_diag.c	bpf, net: Rework cookie generator as per-cpu one	2020-09-30 11:50:35 -07:00
sock_map.c	net, sockmap: Don't call bpf_prog_put() on NULL pointer	2020-10-15 21:05:23 +02:00
sock_reuseport.c	udp: Prevent reuseport_select_sock from reading uninitialized socks	2021-01-23 16:03:59 +01:00
sock.c	af_unix: fix races in sk_peer_pid and sk_peer_cred accesses	2021-10-06 15:55:58 +02:00
stream.c
sysctl_net_core.c	net: add option to not create fall-back tunnels in root-ns as well	2020-08-28 06:52:44 -07:00
timestamping.c
tso.c	net: tso: add UDP segmentation support	2020-06-18 20:46:23 -07:00
utils.c
xdp.c	xdp: fix xdp_return_frame() kernel BUG throw for page_pool memory model	2021-04-14 08:42:09 +02:00