microsoft
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WSL2-Linux-Kernel
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WSL2-Linux-Kernel/net
История
Michael Scott d2891c4d07 Bluetooth: 6lowpan: fix delay work init in add_peer_chan() 
When adding 6lowpan devices very rapidly we sometimes see a crash:
[23122.306615] CPU: 2 PID: 0 Comm: swapper/2 Not tainted 4.9.0-43-arm64 #1 Debian 4.9.9.linaro.43-1
[23122.315400] Hardware name: HiKey Development Board (DT)
[23122.320623] task: ffff800075443080 task.stack: ffff800075484000
[23122.326551] PC is at expire_timers+0x70/0x150
[23122.330907] LR is at run_timer_softirq+0xa0/0x1a0
[23122.335616] pc : [<ffff000008142dd8>] lr : [<ffff000008142f58>] pstate: 600001c5

This was due to add_peer_chan() unconditionally initializing the
lowpan_btle_dev->notify_peers delayed work structure, even if the
lowpan_btle_dev passed into add_peer_chan() had previously been
initialized.

Normally, this would go unnoticed as the delayed work timer is set for
100 msec, however when calling add_peer_chan() faster than 100 msec it
clears out a previously queued delay work causing the crash above.

To fix this, let add_peer_chan() know when a new lowpan_btle_dev is passed
in so that it only performs the delay work initialization when needed.

Signed-off-by: Michael Scott <michael.scott@linaro.org>
Acked-by: Jukka Rissanen <jukka.rissanen@linux.intel.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
 		2017-04-12 22:02:39 +02:00
..
6lowpan 6lowpan: Use netdev addr_len to determine lladdr len 2017-04-12 22:02:36 +02:00
9p Merge branch 'work.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs 2017-03-03 21:44:35 -08:00
802 Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
8021q net/8021q: create device with all possible features in wanted_features 2017-03-21 15:26:26 -07:00
appletalk lib/vsprintf.c: remove %Z support 2017-02-27 18:43:47 -08:00
atm neighbour: fix nlmsg_pid in notifications 2017-03-22 10:48:49 -07:00
ax25 net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
batman-adv This feature/cleanup patchset includes the following patches: 2017-04-06 14:37:50 -07:00
bluetooth Bluetooth: 6lowpan: fix delay work init in add_peer_chan() 2017-04-12 22:02:39 +02:00
bpf bpf: introduce BPF_PROG_TEST_RUN command 2017-04-01 12:45:57 -07:00
bridge net: break include loop netdevice.h, dsa.h, devlink.h 2017-03-28 22:46:04 -07:00
caif sched/headers: Prepare for new header dependencies before moving code to <linux/sched/signal.h> 2017-03-02 08:42:29 +01:00
can can: initial support for network namespaces 2017-04-04 17:35:58 +02:00
ceph libceph: force GFP_NOIO for socket allocations 2017-03-23 12:03:36 +01:00
core gso: Support frag_list splitting with head_frag 2017-04-12 13:53:35 -04:00
dcb net: dcb: set error code on failures 2016-12-03 23:54:25 -05:00
dccp dccp: fix memory leak during tear-down of unsuccessful connection request 2017-03-13 22:00:42 -07:00
decnet Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-03-15 11:59:10 -07:00
dns_resolver Merge branch 'WIP.sched-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip 2017-03-03 10:16:38 -08:00
dsa net: dsa: Factor bottom tag receive functions 2017-04-08 13:49:36 -07:00
ethernet Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next 2017-02-16 21:25:49 -05:00
hsr net/hsr: use eth_hw_addr_random() 2017-02-21 13:25:22 -05:00
ieee802154 lib/vsprintf.c: remove %Z support 2017-02-27 18:43:47 -08:00
ife net: Introduce ife encapsulation module 2017-02-03 15:16:45 -05:00
ipv4 net: ipv4: fix multipath RTM_GETROUTE behavior when iif is given 2017-04-07 07:56:14 -07:00
ipv6 6lowpan: Fix IID format for Bluetooth 2017-04-12 22:02:36 +02:00
ipx ktime: Get rid of the union 2016-12-25 17:21:22 +01:00
irda net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
iucv net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
kcm kcm: return immediately after copy_from_user() failure 2017-03-24 13:13:53 -07:00
key xfrm: remove unused struct xfrm_mgr::id 2017-03-24 07:03:12 +01:00
l2tp l2tp: define parameters of l2tp_tunnel_find*() as "const" 2017-04-12 10:44:02 -04:00
l3mdev
…
lapb Replace <asm/uaccess.h> with <linux/uaccess.h> globally 2016-12-24 11:46:01 -08:00
llc net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
mac80211 mac80211: unconditionally start new netdev queues with iTXQ support 2017-03-29 14:20:40 +02:00
mac802154 drivers: add explicit interrupt.h includes 2017-03-30 11:05:34 -07:00
mpls net: mpls: Increase max number of labels for lwt encap 2017-04-01 20:21:44 -07:00
ncsi
…
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-04-06 08:24:51 -07:00
netlabel netlabel: add CALIPSO to the list of built-in protocols 2017-01-06 22:20:45 -05:00
netlink netlink/diag: report flags for netlink sockets 2017-04-05 07:13:56 -07:00
netrom net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
nfc net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
openvswitch Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-04-06 08:24:51 -07:00
packet net/packet: fix overflow in check for tp_reserve 2017-03-30 11:04:00 -07:00
phonet net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
psample net: Introduce psample, a new genetlink channel for packet sampling 2017-01-24 13:44:28 -05:00
qrtr soc: qcom: smd: Transition client drivers from smd to rpmsg 2017-03-28 17:58:07 -07:00
rds rds: tcp: canonical connection order for all paths with index > 0 2017-04-02 19:41:00 -07:00
rfkill rfkill: remove rfkill-regulator 2017-01-24 11:07:35 +01:00
rose net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
rxrpc rxrpc: Trace client call connection 2017-04-06 11:10:41 +01:00
sched net: sched: choke: remove some dead code 2017-04-05 06:53:42 -07:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2017-04-06 08:24:51 -07:00
smc net/smc: do not use IB_SEND_INLINE together with mapped data 2017-04-11 23:01:14 -04:00
strparser strparser: destroy workqueue on module exit 2017-03-03 20:43:26 -08:00
sunrpc The restriction of NFSv4 to TCP went overboard and also broke the 2017-04-01 10:43:37 -07:00
switchdev
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tipc tipc: allow rdm/dgram socketpairs 2017-03-29 14:10:11 -07:00
unix af_unix: Use designated initializers 2017-04-06 12:43:04 -07:00
vmw_vsock VSOCK: remove unnecessary ternary operator on return value 2017-03-30 11:07:08 -07:00
wimax
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wireless cfg80211: check rdev resume callback only for registered wiphy 2017-03-29 09:11:29 +02:00
x25 net: Work around lockdep limitation in sockets that use sockets 2017-03-09 18:23:27 -08:00
xfrm Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsec-next 2017-04-11 10:10:30 -04:00
Kconfig bpf: make jited programs visible in traces 2017-02-17 13:40:05 -05:00
Makefile bpf: introduce BPF_PROG_TEST_RUN command 2017-04-01 12:45:57 -07:00
compat.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2017-02-22 10:15:09 -08:00
socket.c New kernel function to get IP overhead on a socket. 2017-04-06 13:43:31 -07:00
sysctl_net.c
…