Sharath Chandra Vurukala 4d2f6ab9a8 net: sockev: avoid races between sockev and socket_close ... Use-after-free is seen when sending a sockev netlink message since socket is not held which can race with sk_free. KASAN: use-after-free in sockev_client_cb+0x41c/0x4b8 in net/core/sockev_nlmcast.c:104 Read of size 2 at addr ffffffc08420c550 Call trace: dump_backtrace+0x0/0x388 arch/arm64/kernel/time.c:55 show_stack+0x24/0x30 arch/arm64/kernel/traps.c:152 __dump_stack+0x24/0x2c lib/dump_stack.c:17 dump_stack+0x8c/0xd0 lib/dump_stack.c:53 print_address_description+0x74/0x234 mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report+0x240/0x264 mm/kasan/report.c:412 __asan_report_load2_noabort+0x2c/0x38 mm/kasan/report.c:431 sockev_client_cb+0x41c/0x4b8 net/core/sockev_nlmcast.c:104 notifier_call_chain+0x104/0x158 kernel/notifier.c:93 __blocking_notifier_call_chain+0x80/0xb0 kernel/notifier.c:317 blocking_notifier_call_chain+0x3c/0x4c kernel/notifier.c:328 sockev_notify+0x30/0x3c net/socket.c:181 SYSC_bind net/socket.c:1509 [inline] SyS_bind+0x1ec/0x30c net/socket.c:1489 el0_svc_naked+0x34/0x38 Freed by task 19460: save_stack mm/kasan/kasan.c:447 [inline] set_track mm/kasan/kasan.c:459 [inline] __kasan_slab_free+0x134/0x20c mm/kasan/kasan.c:520 kasan_slab_free+0x10/0x1c mm/kasan/kasan.c:527 slab_free_hook mm/slub.c:1401 [inline] slab_free_freelist_hook mm/slub.c:1422 [inline] slab_free mm/slub.c:2979 [inline] kmem_cache_free+0x114/0x664 mm/slub.c:3001 sk_prot_free net/core/sock.c:1504 [inline] __sk_destruct+0x324/0x3c0 net/core/sock.c:1585 __sk_free+0x180/0x200 net/core/sock.c:1601 sk_free+0x44/0x50 net/core/sock.c:1612 sock_put include/net/sock.h:1643 [inline] sk_common_release+0x198/0x20c net/core/sock.c:3014 raw_close+0x38/0x44 net/ipv4/raw.c:703 inet_release+0x128/0x15c net/ipv4/af_inet.c:446 __sock_release+0xb8/0x258 net/socket.c:614 sock_close+0x24/0x34 net/socket.c:1150 __fput+0x1f4/0x4e4 fs/file_table.c:345 ____fput+0x20/0x2c fs/file_table.c:380 task_work_run+0x9c/0x174 kernel/task_work.c:113 Change-Id: Idb4335889b6e4228f36d76ca5b6156cc5e5838da Signed-off-by: Sharath Chandra Vurukala <sharathv@codeaurora.org>		2019-05-20 15:51:25 +05:30
..
datagram.c
dev.c	Merge android-4.4.153 (5e24b4e) into msm-4.4	2018-08-28 17:28:39 +05:30
dev_addr_lists.c	net: fix uninit-value in __hw_addr_add_ex()	2018-05-16 10:06:50 +02:00
dev_ioctl.c	net: Zero terminate ifr_name in dev_ifname().	2017-08-11 09:08:52 -07:00
drop_monitor.c	drop_monitor: consider inserted data in genlmsg_end	2017-01-15 13:41:35 +01:00
dst.c	Fix an intermittent pr_emerg warning about lo becoming free.	2017-07-05 14:37:13 +02:00
dst_cache.c	net: dst_cache_per_cpu_dst_set() can be static	2018-02-25 11:03:55 +01:00
ethtool.c	ethtool: do not vzalloc(0) on registers dump	2017-06-17 06:39:36 +02:00
fib_rules.c	net: core: add UID to flows, rules, and routes	2017-01-02 14:06:47 +05:30
filter.c	bpf: fix 32-bit divide by zero	2018-02-03 17:04:25 +01:00
flow.c
flow_dissector.c	net: Include additional rmnet header in flow_dissector	2018-09-04 18:35:04 -07:00
gen_estimator.c
gen_stats.c
link_watch.c
lwtunnel.c
Makefile	Merge android-4.4.118 (5f7f76a) into msm-4.4	2018-03-01 17:20:34 +05:30
neighbour.c	Merge android-4.4.131 (d5d6526) into msm-4.4	2018-05-03 15:53:14 +05:30
net-procfs.c
net-sysfs.c
net-sysfs.h
net-traces.c
net_namespace.c	net: move somaxconn init from sysctl code	2018-04-13 19:50:11 +02:00
netclassid_cgroup.c
netevent.c
netpoll.c	UPSTREAM: netpoll: Fix device name check in netpoll_setup()	2018-05-04 20:25:10 +00:00
netprio_cgroup.c
pktgen.c	net: pktgen: remove rcu locking in pktgen_change_name()	2016-11-15 07:46:38 +01:00
ptp_classifier.c
request_sock.c
rtnetlink.c	rtnetlink: add rtnl_link_state check in rtnl_configure_link	2018-07-28 07:45:02 +02:00
scm.c
secure_seq.c
skbuff.c	Merge android-4.4.144 (4b2d6ba) into msm-4.4	2018-08-03 17:05:13 +05:30
sock.c	Merge android-4.4.133 (3f51ea2) into msm-4.4	2018-05-31 12:28:38 +05:30
sock_diag.c	This is the 4.4.112 stable release	2018-01-17 10:14:26 +01:00
sockev_nlmcast.c	net: sockev: avoid races between sockev and socket_close	2019-05-20 15:51:25 +05:30
stream.c
sysctl_net_core.c	net: move somaxconn init from sysctl code	2018-04-13 19:50:11 +02:00
timestamping.c
tso.c
utils.c