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Subash Abhinov Kasiviswanathan 09535b865c ANDROID: netfilter: xt_IDLETIMER: Fix use after free condition during work 
schedule_work(&timer->work) appears to be called after
cancel_work_sync(&info->timer->work) is completed.
Work can be scheduled from the PM_POST_SUSPEND notification event
even after cancel_work_sync is called.

Call stack

-004|notify_netlink_uevent(
    |    [X19] timer = 0xFFFFFFC0A5DFC780 -> (
    |      ...
    |      [NSD:0xFFFFFFC0A5DFC800] kobj = 0x6B6B6B6B6B6B6B6B,
    |      [NSD:0xFFFFFFC0A5DFC868] timeout = 0x6B6B6B6B,
    |      [NSD:0xFFFFFFC0A5DFC86C] refcnt = 0x6B6B6B6B,
    |      [NSD:0xFFFFFFC0A5DFC870] work_pending = 0x6B,
    |      [NSD:0xFFFFFFC0A5DFC871] send_nl_msg = 0x6B,
    |      [NSD:0xFFFFFFC0A5DFC872] active = 0x6B,
    |      [NSD:0xFFFFFFC0A5DFC874] uid = 0x6B6B6B6B,
    |      [NSD:0xFFFFFFC0A5DFC878] suspend_time_valid = 0x6B))
-005|idletimer_tg_work(
-006|__read_once_size(inline)
-006|static_key_count(inline)
-006|static_key_false(inline)
-006|trace_workqueue_execute_end(inline)
-006|process_one_work(
-007|worker_thread(
-008|kthread(
-009|ret_from_fork(asm)
---|end of frame

Force any pending idletimer_tg_work() to complete before freeing
the associated work struct and after unregistering to the pm_notifier
callback.

Change-Id: I4c5f0a1c142f7d698c092cf7bcafdb0f9fbaa9c1
Signed-off-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
2018-08-28 17:10:42 +05:30
..
6lowpan 6lowpan: iphc: reset mac_header after decompress to fix panic 2018-07-06 12:32:12 +02:00
9p Pull request for inclusion in 4.19, take two 2018-08-17 17:27:58 -07:00
802
8021q net: remove blank lines at end of file 2018-07-24 14:10:43 -07:00
appletalk Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL 2018-06-28 10:40:47 -07:00
atm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-08-15 15:04:25 -07:00
ax25 ax25: remove blank line at EOF 2018-07-24 14:10:42 -07:00
batman-adv Merge ra.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux 2018-07-20 21:17:12 -07:00
bluetooth ANDROID: net: Paranoid network. 2018-08-28 17:10:42 +05:30
bpf bpf/test_run: support cgroup local storage 2018-08-03 00:47:32 +02:00
bpfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-08-15 15:04:25 -07:00
bridge net/bridge/br_multicast: remove redundant variable "err" 2018-08-06 10:33:44 -07:00
caif net: simplify sock_poll_wait 2018-07-30 09:10:25 -07:00
can Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL 2018-06-28 10:40:47 -07:00
ceph crush: fix using plain integer as NULL warning 2018-08-13 17:55:44 +02:00
core Merge branch 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax 2018-08-26 11:48:42 -07:00
dcb net: dcb: Add priority-to-DSCP map getters 2018-07-27 13:17:50 -07:00
dccp Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net 2018-08-09 11:52:36 -07:00
decnet decnet: fix using plain integer as NULL warning 2018-08-09 14:11:24 -07:00
dns_resolver net: remove blank lines at end of file 2018-07-24 14:10:43 -07:00
dsa Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net 2018-08-09 11:52:36 -07:00
ethernet net: Convert GRO SKB handling to list_head. 2018-06-26 11:33:04 +09:00
hsr
ieee802154 net: ieee802154: 6lowpan: remove redundant pointers 'fq' and 'net' 2018-08-06 11:21:15 +02:00
ife
ipv4 ANDROID: net: ipv4: tcp: add a sysctl to config the tcp_default_init_rwnd 2018-08-28 17:10:42 +05:30
ipv6 ANDROID: net: ipv6: autoconf routes into per-device tables 2018-08-28 17:10:42 +05:30
iucv net:af_iucv: get rid of the unneeded variable 'err' in afiucv_pm_freeze 2018-08-08 09:39:36 -07:00
kcm net: remove blank lines at end of file 2018-07-24 14:10:43 -07:00
key Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next 2018-07-27 09:33:37 -07:00
l2tp l2tp: fix unused function warning 2018-08-13 20:45:49 -07:00
l3mdev
lapb
llc Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net 2018-08-09 11:52:36 -07:00
mac80211 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-08-15 15:04:25 -07:00
mac802154 net: mac802154: tx: expand tailroom if necessary 2018-08-06 11:21:37 +02:00
mpls mpls: remove trailing whitepace 2018-07-24 14:10:42 -07:00
ncsi net/ncsi: Use netdev_dbg for debug messages 2018-06-20 07:26:58 +09:00
netfilter ANDROID: netfilter: xt_IDLETIMER: Fix use after free condition during work 2018-08-28 17:10:42 +05:30
netlabel audit: eliminate audit_enabled magic number comparison 2018-06-19 10:43:55 -04:00
netlink Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net 2018-08-05 13:04:31 -07:00
netrom Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL 2018-06-28 10:40:47 -07:00
nfc net: simplify sock_poll_wait 2018-07-30 09:10:25 -07:00
nsh nsh: set mac len based on inner packet 2018-07-12 16:55:29 -07:00
openvswitch Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net 2018-08-02 10:55:32 -07:00
packet packet: switch kvzalloc to allocate memory 2018-08-13 09:21:05 -07:00
phonet Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL 2018-06-28 10:40:47 -07:00
psample
qrtr net: qrtr: Reset the node and port ID of broadcast messages 2018-07-05 20:20:03 +09:00
rds Merge branch 'linus/master' into rdma.git for-next 2018-08-16 14:21:29 -06:00
rfkill ANDROID: net: rfkill: Introduce CONFIG_RFKILL_PM and use instead of CONFIG_PM to power down 2018-08-28 17:10:42 +05:30
rose Revert changes to convert to ->poll_mask() and aio IOCB_CMD_POLL 2018-06-28 10:40:47 -07:00
rxrpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-08-15 15:04:25 -07:00
sched net: sched: always disable bh when taking tcf_lock 2018-08-19 10:46:21 -07:00
sctp net/sctp: Replace in/out stream arrays with flex_array 2018-08-11 12:25:15 -07:00
smc RDMA/smc: Replace ib_query_gid with rdma_get_gid_attr 2018-08-17 16:45:51 -06:00
strparser strparser: remove redundant variable 'rd_desc' 2018-08-01 10:00:06 -07:00
sunrpc NFS client updates for Linux 4.19 2018-08-23 16:03:58 -07:00
switchdev
tipc Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net 2018-08-09 11:52:36 -07:00
tls Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpf 2018-08-18 10:02:49 -07:00
unix af_unix: ensure POLLOUT on remote close() for connected dgram socket 2018-08-03 16:44:19 -07:00
vmw_vsock vsock: split dwork to avoid reinitializations 2018-08-07 12:39:13 -07:00
wimax wimax: remove blank lines at EOF 2018-07-24 14:10:42 -07:00
wireless ANDROID: net: wireless: Decrease scan entry expiration to avoid stall results 2018-08-28 17:10:42 +05:30
x25 x25: remove blank lines at EOF 2018-07-24 14:10:42 -07:00
xdp Merge ra.kernel.org:/pub/scm/linux/kernel/git/davem/net 2018-08-05 13:04:31 -07:00
xfrm ANDROID: net: xfrm: make PF_KEY SHA256 use RFC-compliant truncation. 2018-08-28 17:10:42 +05:30
compat.c net: avoid unnecessary sock_flag() check when enable timestamp 2018-08-06 10:42:48 -07:00
Kconfig ANDROID: net: Paranoid network. 2018-08-28 17:10:42 +05:30
Makefile bpfilter: check compiler capability in Kconfig 2018-06-28 13:36:39 +09:00
socket.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2018-08-15 15:04:25 -07:00
sysctl_net.c