Jakub Sitnicki 5cf65922bb flow_dissector: Drop BPF flow dissector prog ref on netns cleanup ... When attaching a flow dissector program to a network namespace with bpf(BPF_PROG_ATTACH, ...) we grab a reference to bpf_prog. If netns gets destroyed while a flow dissector is still attached, and there are no other references to the prog, we leak the reference and the program remains loaded. Leak can be reproduced by running flow dissector tests from selftests/bpf: # bpftool prog list # ./test_flow_dissector.sh ... selftests: test_flow_dissector [PASS] # bpftool prog list 4: flow_dissector name _dissect tag e314084d332a5338 gpl loaded_at 2020-05-20T18:50:53+0200 uid 0 xlated 552B jited 355B memlock 4096B map_ids 3,4 btf_id 4 # Fix it by detaching the flow dissector program when netns is going away. Fixes: d58e468b11 ("flow_dissector: implements flow dissector BPF hook") Signed-off-by: Jakub Sitnicki <jakub@cloudflare.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Reviewed-by: Stanislav Fomichev <sdf@google.com> Link: https://lore.kernel.org/bpf/20200521083435.560256-1-jakub@cloudflare.com		2020-05-21 17:52:45 -07:00
..
bpf_sk_storage.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf-next	2020-02-29 15:53:35 -08:00
datagram.c	net: use indirect call wrappers for skb_copy_datagram_iter()	2020-03-25 11:30:40 -07:00
datagram.h	net/core: Allow the compiler to verify declaration and definition consistency	2019-03-27 13:49:44 -07:00
dev_addr_lists.c	net: remove unnecessary variables and callback	2019-10-24 14:53:49 -07:00
dev_ioctl.c	ethtool: add timestamping related string sets	2020-03-29 22:32:36 -07:00
dev.c	__netif_receive_skb_core: pass skb by reference	2020-05-19 15:38:00 -07:00
devlink.c	devlink: Fix reporter's recovery condition	2020-05-04 10:40:39 -07:00
drop_monitor.c	drop_monitor: work around gcc-10 stringop-overflow warning	2020-05-01 15:45:16 -07:00
dst_cache.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
dst.c	net: print proper warning on dst underflow	2019-09-26 09:05:56 +02:00
failover.c	failover: allow name change on IFF_UP slave interfaces	2019-04-10 22:12:26 -07:00
fib_notifier.c	net: fib_notifier: propagate extack down to the notifier block callback	2019-10-04 11:10:56 -07:00
fib_rules.c	net: fib_rules: Correctly set table field when table number exceeds 8 bits	2020-02-16 18:38:24 -08:00
filter.c	bpf, sockmap: msg_pop_data can incorrecty set an sge length	2020-05-06 00:22:15 +02:00
flow_dissector.c	flow_dissector: Drop BPF flow dissector prog ref on netns cleanup	2020-05-21 17:52:45 -07:00
flow_offload.c	netfilter: flowtable: Fix incorrect tc_setup_type type	2020-03-27 18:41:52 +01:00
gen_estimator.c	net_sched: gen_estimator: extend packet counter to 64bit	2019-11-06 21:51:36 -08:00
gen_stats.c	net_sched: add TCA_STATS_PKT64 attribute	2019-11-05 18:20:55 -08:00
gro_cells.c	gro_cells: make sure device is up in gro_cells_receive()	2019-03-10 11:07:14 -07:00
hwbm.c	net: hwbm: Make the hwbm_pool lock a mutex	2019-06-09 19:40:10 -07:00
link_watch.c	net: link_watch: prevent starvation when processing linkwatch wq	2019-07-01 19:02:47 -07:00
lwt_bpf.c	net: add net available in build_state	2020-03-29 22:30:57 -07:00
lwtunnel.c	net: ipv6: add rpl sr tunnel	2020-03-29 22:30:57 -07:00
Makefile	ethtool: move to its own directory	2019-12-12 17:07:05 -08:00
neighbour.c	neigh: send protocol value in neighbor create notification	2020-05-05 13:38:59 -07:00
net_namespace.c	bpf: Add netns cookie and enable it for bpf cgroup hooks	2020-03-27 19:40:38 -07:00
net-procfs.c	net: procfs: use index hashlist instead of name hashlist	2019-10-01 14:47:19 -07:00
net-sysfs.c	net-sysfs: remove redundant assignment to variable ret	2020-04-09 10:14:53 -07:00
net-sysfs.h	net-sysfs: add netdev_change_owner()	2020-02-26 20:07:25 -08:00
net-traces.c	page_pool: add tracepoints for page_pool with details need by XDP	2019-06-19 11:23:13 -04:00
netclassid_cgroup.c	cgroup, netclassid: remove double cond_resched	2020-04-21 15:44:30 -07:00
netevent.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 152	2019-05-30 11:26:32 -07:00
netpoll.c	net: fix skb use after free in netpoll	2019-08-27 20:52:02 -07:00
netprio_cgroup.c	netprio_cgroup: Fix unlimited memory leak of v2 cgroups	2020-05-09 20:59:21 -07:00
page_pool.c	net: page pool: allow to pass zero flags to page_pool_init()	2020-03-29 21:49:20 -07:00
pktgen.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-03-25 18:58:11 -07:00
ptp_classifier.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 295	2019-06-05 17:36:38 +02:00
request_sock.c	tcp: add rcu protection around tp->fastopen_rsk	2019-10-13 10:13:08 -07:00
rtnetlink.c	xdp: Support specifying expected existing program when attaching XDP	2020-03-28 14:24:41 -07:00
scm.c	y2038: socket: remove timespec reference in timestamping	2019-11-15 14:38:29 +01:00
secure_seq.c	treewide: Add SPDX license identifier for missed files	2019-05-21 10:50:45 +02:00
skbuff.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-03-30 20:48:43 -07:00
skmsg.c	bpf: Use bpf_prog_run_pin_on_cpu() at simple call sites.	2020-02-24 16:20:09 -08:00
sock_diag.c	sock: make cookie generation global instead of per netns	2019-08-09 13:14:46 -07:00
sock_map.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net	2020-03-25 18:58:11 -07:00
sock_reuseport.c	net: Generate reuseport group ID on group creation	2020-02-21 22:29:45 +01:00
sock.c	net: remove obsolete comment	2020-04-25 20:49:32 -07:00
stream.c	tcp: make sure EPOLLOUT wont be missed	2019-08-19 13:07:43 -07:00
sysctl_net_core.c	net, sysctl: Fix compiler warning when only cBPF is present	2019-12-19 17:17:51 +01:00
timestamping.c	net: Introduce a new MII time stamping interface.	2019-12-25 19:51:33 -08:00
tso.c	net: Use skb accessors in network core	2019-07-22 20:47:56 -07:00
utils.c	net: Fix skb->csum update in inet_proto_csum_replace16().	2020-01-24 20:54:30 +01:00
xdp.c	net: page_pool: API cleanup and comments	2020-02-20 10:09:25 -08:00