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f612eb76f3
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Geliang Tang f612eb76f3 mptcp: fix kmalloc flag in mptcp_pm_nl_get_local_id 
mptcp_pm_nl_get_local_id may be called in interrupt context, so we need to
use GFP_ATOMIC flag to allocate memory to avoid sleeping in atomic context.

[  280.209809] BUG: sleeping function called from invalid context at mm/slab.h:498
[  280.209812] in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1680, name: kworker/1:3
[  280.209814] INFO: lockdep is turned off.
[  280.209816] CPU: 1 PID: 1680 Comm: kworker/1:3 Tainted: G        W         5.9.0-rc3-mptcp+ #146
[  280.209818] Hardware name: innotek GmbH VirtualBox/VirtualBox, BIOS VirtualBox 12/01/2006
[  280.209820] Workqueue: events mptcp_worker
[  280.209822] Call Trace:
[  280.209824]  <IRQ>
[  280.209826]  dump_stack+0x77/0xa0
[  280.209829]  ___might_sleep.cold+0xa6/0xb6
[  280.209832]  kmem_cache_alloc_trace+0x1d1/0x290
[  280.209835]  mptcp_pm_nl_get_local_id+0x23c/0x410
[  280.209840]  subflow_init_req+0x1e9/0x2ea
[  280.209843]  ? inet_reqsk_alloc+0x1c/0x120
[  280.209845]  ? kmem_cache_alloc+0x264/0x290
[  280.209849]  tcp_conn_request+0x303/0xae0
[  280.209854]  ? printk+0x53/0x6a
[  280.209857]  ? tcp_rcv_state_process+0x28f/0x1374
[  280.209859]  tcp_rcv_state_process+0x28f/0x1374
[  280.209864]  ? tcp_v4_do_rcv+0xb3/0x1f0
[  280.209866]  tcp_v4_do_rcv+0xb3/0x1f0
[  280.209869]  tcp_v4_rcv+0xed6/0xfa0
[  280.209873]  ip_protocol_deliver_rcu+0x28/0x270
[  280.209875]  ip_local_deliver_finish+0x89/0x120
[  280.209877]  ip_local_deliver+0x180/0x220
[  280.209881]  ip_rcv+0x166/0x210
[  280.209885]  __netif_receive_skb_one_core+0x82/0x90
[  280.209888]  process_backlog+0xd6/0x230
[  280.209891]  net_rx_action+0x13a/0x410
[  280.209895]  __do_softirq+0xcf/0x468
[  280.209899]  asm_call_on_stack+0x12/0x20
[  280.209901]  </IRQ>
[  280.209903]  ? ip_finish_output2+0x240/0x9a0
[  280.209906]  do_softirq_own_stack+0x4d/0x60
[  280.209908]  do_softirq.part.0+0x2b/0x60
[  280.209911]  __local_bh_enable_ip+0x9a/0xa0
[  280.209913]  ip_finish_output2+0x264/0x9a0
[  280.209916]  ? rcu_read_lock_held+0x4d/0x60
[  280.209920]  ? ip_output+0x7a/0x250
[  280.209922]  ip_output+0x7a/0x250
[  280.209925]  ? __ip_finish_output+0x330/0x330
[  280.209928]  __ip_queue_xmit+0x1dc/0x5a0
[  280.209931]  __tcp_transmit_skb+0xa0f/0xc70
[  280.209937]  tcp_connect+0xb03/0xff0
[  280.209939]  ? lockdep_hardirqs_on_prepare+0xe7/0x190
[  280.209942]  ? ktime_get_with_offset+0x125/0x150
[  280.209944]  ? trace_hardirqs_on+0x1c/0xe0
[  280.209948]  tcp_v4_connect+0x449/0x550
[  280.209953]  __inet_stream_connect+0xbb/0x320
[  280.209955]  ? mark_held_locks+0x49/0x70
[  280.209958]  ? lockdep_hardirqs_on_prepare+0xe7/0x190
[  280.209960]  ? __local_bh_enable_ip+0x6b/0xa0
[  280.209963]  inet_stream_connect+0x32/0x50
[  280.209966]  __mptcp_subflow_connect+0x1fd/0x242
[  280.209972]  mptcp_pm_create_subflow_or_signal_addr+0x2db/0x600
[  280.209975]  mptcp_worker+0x543/0x7a0
[  280.209980]  process_one_work+0x26d/0x5b0
[  280.209984]  ? process_one_work+0x5b0/0x5b0
[  280.209987]  worker_thread+0x48/0x3d0
[  280.209990]  ? process_one_work+0x5b0/0x5b0
[  280.209993]  kthread+0x117/0x150
[  280.209996]  ? kthread_park+0x80/0x80
[  280.209998]  ret_from_fork+0x22/0x30

Fixes: 01cacb00b3 ("mptcp: add netlink-based PM")
Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-09-10 12:30:03 -07:00
..
6lowpan treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
9p treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
802
8021q treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
appletalk appletalk: Fix atalk_proc_init() return path 2020-08-03 15:48:32 -07:00
atm treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
ax25 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-07-25 17:49:04 -07:00
batman-adv batman-adv: bla: use netif_rx_ni when not in interrupt context 2020-08-18 19:40:03 +02:00
bluetooth mm, treewide: rename kzfree() to kfree_sensitive() 2020-08-07 11:33:22 -07:00
bpf treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
bpfilter Merge branch 'exec-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace 2020-08-04 14:27:25 -07:00
bridge netfilter: ebtables: reject bogus getopt len value 2020-08-14 11:59:08 +02:00
caif net: caif: fix error code handling 2020-08-25 07:50:25 -07:00
can treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
ceph treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
core fib: fix fib_rule_ops indirect call wrappers when CONFIG_IPV6=m 2020-09-08 20:09:08 -07:00
dcb dcb_doit: remove redundant skb check 2020-06-23 20:27:09 -07:00
dccp treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
decnet treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
dns_resolver docs: networking: convert dns_resolver.txt to ReST 2020-04-28 14:39:46 -07:00
dsa net: dsa: link interfaces with the DSA master to get rid of lockdep warnings 2020-09-08 19:40:09 -07:00
ethernet net: move devres helpers into a separate source file 2020-05-23 16:56:17 -07:00
ethtool ethtool: Don't omit the netlink reply if no features were changed 2020-08-18 16:00:24 -07:00
hsr hsr: avoid newline at end of message in NL_SET_ERR_MSG_MOD 2020-09-09 11:15:26 -07:00
ieee802154 treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
ife
ipv4 ip: fix tos reflection in ack and reset packets 2020-09-08 20:19:08 -07:00
ipv6 ipv6: avoid lockdep issue in fib6_del() 2020-09-08 19:56:25 -07:00
iucv treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
kcm net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
key Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-08-02 01:02:12 -07:00
l2tp l2tp: improve API documentation in l2tp_core.h 2020-07-30 16:45:31 -07:00
l3mdev net: Fix some comments 2020-08-27 07:55:59 -07:00
lapb treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
llc net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
mac80211 mac80211: reduce packet loss event false positives 2020-08-27 10:53:20 +02:00
mac802154 Merge tag 'ieee802154-for-davem-2020-09-08' of git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan 2020-09-08 20:12:58 -07:00
mpls treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
mptcp mptcp: fix kmalloc flag in mptcp_pm_nl_get_local_id 2020-09-10 12:30:03 -07:00
ncsi treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
netfilter netfilter: nft_meta: use socket user_ns to retrieve skuid and skgid 2020-09-08 13:04:56 +02:00
netlabel netlabel: fix problems with mapping removal 2020-08-24 16:08:00 -07:00
netlink Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-03 18:50:48 -07:00
netrom treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
nfc net/nfc/rawsock.c: add CAP_NET_RAW check. 2020-08-11 10:34:30 -07:00
nsh treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
openvswitch treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
packet net/packet: fix overflow in tpacket_rcv 2020-09-04 11:56:02 -07:00
phonet treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
psample net: psample: fix build error when CONFIG_INET is not enabled 2020-05-23 16:36:05 -07:00
qrtr net: qrtr: check skb_put_padto() return value 2020-09-09 11:04:39 -07:00
rds treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
rfkill
rose treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
rxrpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-03 18:50:48 -07:00
sched act_ife: load meta modules before tcf_idr_check_alloc() 2020-09-04 22:08:59 -07:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-03 18:50:48 -07:00
smc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-03 18:50:48 -07:00
strparser
sunrpc Fixes: 2020-08-25 18:01:36 -07:00
switchdev net: switchdev: kerneldoc fixes 2020-07-13 17:20:40 -07:00
tipc tipc: fix shutdown() of connection oriented socket 2020-09-10 12:21:39 -07:00
tls net/tls: Fix kmap usage 2020-08-11 10:20:34 -07:00
unix treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
vmw_vsock vsock: fix potential null pointer dereference in vsock_poll() 2020-08-12 12:56:06 -07:00
wimax
wireless Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-03 18:50:48 -07:00
x25 treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
xdp xdp: Prevent kernel-infoleak in xsk_getsockopt() 2020-07-28 12:50:15 +02:00
xfrm treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
compat.c net/scm: Fix typo in SCM_RIGHTS compat refactoring 2020-08-07 12:43:25 -07:00
devres.c net: devres: rename the release callback of devm_register_netdev() 2020-06-30 15:57:34 -07:00
Kconfig net: ethtool: Remove PHYLIB direct dependency 2020-07-07 15:41:05 -07:00
Makefile net: move devres helpers into a separate source file 2020-05-23 16:56:17 -07:00
socket.c net: Fix some comments 2020-08-27 07:55:59 -07:00
sysctl_net.c