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linux-next/net
Samuel Mendoza-Jonas b094961882 net/ncsi: Avoid GFP_KERNEL in response handler
ncsi_rsp_handler_gc() allocates the filter arrays using GFP_KERNEL in
softirq context, causing the below backtrace. This allocation is only a
few dozen bytes during probing so allocate with GFP_ATOMIC instead.

[   42.813372] BUG: sleeping function called from invalid context at mm/slab.h:416
[   42.820900] in_atomic(): 1, irqs_disabled(): 0, pid: 213, name: kworker/0:1
[   42.827893] INFO: lockdep is turned off.
[   42.832023] CPU: 0 PID: 213 Comm: kworker/0:1 Tainted: G        W       4.13.16-01441-gad99b38 #65
[   42.841007] Hardware name: Generic DT based system
[   42.845966] Workqueue: events ncsi_dev_work
[   42.850251] [<8010a494>] (unwind_backtrace) from [<80107510>] (show_stack+0x20/0x24)
[   42.858046] [<80107510>] (show_stack) from [<80612770>] (dump_stack+0x20/0x28)
[   42.865309] [<80612770>] (dump_stack) from [<80148248>] (___might_sleep+0x230/0x2b0)
[   42.873241] [<80148248>] (___might_sleep) from [<80148334>] (__might_sleep+0x6c/0xac)
[   42.881129] [<80148334>] (__might_sleep) from [<80240d6c>] (__kmalloc+0x210/0x2fc)
[   42.888737] [<80240d6c>] (__kmalloc) from [<8060ad54>] (ncsi_rsp_handler_gc+0xd0/0x170)
[   42.896770] [<8060ad54>] (ncsi_rsp_handler_gc) from [<8060b454>] (ncsi_rcv_rsp+0x16c/0x1d4)
[   42.905314] [<8060b454>] (ncsi_rcv_rsp) from [<804d86c8>] (__netif_receive_skb_core+0x3c8/0xb50)
[   42.914158] [<804d86c8>] (__netif_receive_skb_core) from [<804d96cc>] (__netif_receive_skb+0x20/0x7c)
[   42.923420] [<804d96cc>] (__netif_receive_skb) from [<804de4b0>] (netif_receive_skb_internal+0x78/0x6a4)
[   42.932931] [<804de4b0>] (netif_receive_skb_internal) from [<804df980>] (netif_receive_skb+0x78/0x158)
[   42.942292] [<804df980>] (netif_receive_skb) from [<8042f204>] (ftgmac100_poll+0x43c/0x4e8)
[   42.950855] [<8042f204>] (ftgmac100_poll) from [<804e094c>] (net_rx_action+0x278/0x4c4)
[   42.958918] [<804e094c>] (net_rx_action) from [<801016a8>] (__do_softirq+0xe0/0x4c4)
[   42.966716] [<801016a8>] (__do_softirq) from [<8011cd9c>] (do_softirq.part.4+0x50/0x78)
[   42.974756] [<8011cd9c>] (do_softirq.part.4) from [<8011cebc>] (__local_bh_enable_ip+0xf8/0x11c)
[   42.983579] [<8011cebc>] (__local_bh_enable_ip) from [<804dde08>] (__dev_queue_xmit+0x260/0x890)
[   42.992392] [<804dde08>] (__dev_queue_xmit) from [<804df1f0>] (dev_queue_xmit+0x1c/0x20)
[   43.000689] [<804df1f0>] (dev_queue_xmit) from [<806099c0>] (ncsi_xmit_cmd+0x1c0/0x244)
[   43.008763] [<806099c0>] (ncsi_xmit_cmd) from [<8060dc14>] (ncsi_dev_work+0x2e0/0x4c8)
[   43.016725] [<8060dc14>] (ncsi_dev_work) from [<80133dfc>] (process_one_work+0x214/0x6f8)
[   43.024940] [<80133dfc>] (process_one_work) from [<80134328>] (worker_thread+0x48/0x558)
[   43.033070] [<80134328>] (worker_thread) from [<8013ba80>] (kthread+0x130/0x174)
[   43.040506] [<8013ba80>] (kthread) from [<80102950>] (ret_from_fork+0x14/0x24)

Fixes: 062b3e1b6d ("net/ncsi: Refactor MAC, VLAN filters")
Signed-off-by: Samuel Mendoza-Jonas <sam@mendozajonas.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-06-03 10:42:07 -04:00
..
6lowpan
9p Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-03 09:31:58 -04:00
802
8021q vlan: Add extack messages for link create 2018-05-17 17:08:55 -04:00
appletalk net: Use octal not symbolic permissions 2018-03-26 12:07:48 -04:00
atm net: atm: Fix potential Spectre v1 2018-05-04 12:52:47 -04:00
ax25 net: Use octal not symbolic permissions 2018-03-26 12:07:48 -04:00
batman-adv Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-05-26 19:46:15 -04:00
bluetooth Bluetooth: Add __hci_cmd_send function 2018-05-18 06:37:52 +02:00
bpf bpf: making bpf_prog_test run aware of possible data_end ptr change 2018-04-18 23:34:16 +02:00
bpfilter bpfilter: fix a build err 2018-05-29 15:20:21 -04:00
bridge Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-03 09:31:58 -04:00
caif net: caif: fix spelling mistake "UKNOWN" -> "UNKNOWN" 2018-04-19 13:37:10 -04:00
can net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
ceph libceph: add osd_req_op_extent_osd_data_bvecs() 2018-05-10 10:15:05 +02:00
core Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-03 09:31:58 -04:00
dcb net/dcb: Add dcbnl buffer attribute 2018-05-24 14:22:59 -07:00
dccp dccp: don't free ccid2_hc_tx_sock struct in dccp_disconnect() 2018-05-22 13:55:20 -04:00
decnet net: fib_rules: add extack support 2018-04-23 10:21:24 -04:00
dns_resolver KEYS: DNS: limit the length of option strings 2018-04-17 15:17:41 -04:00
dsa dsa: port: Ignore bridge VLAN events 2018-05-31 14:13:43 -04:00
ethernet net: core: rework basic flow dissection helper 2018-05-08 00:02:36 -04:00
hsr
ieee802154 net: ieee802154: 6lowpan: fix frag reassembly 2018-04-23 20:56:24 +02:00
ife net: sched: ife: check on metadata length 2018-04-22 21:12:00 -04:00
ipv4 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-03 09:31:58 -04:00
ipv6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-03 09:31:58 -04:00
iucv Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-03-23 11:31:58 -04:00
kcm kcm: Fix use-after-free caused by clonned sockets 2018-06-01 10:28:07 -04:00
key af_key: Always verify length of provided sadb_key 2018-04-09 07:06:38 +02:00
l2tp l2tp: consistent reference counting in procfs and debufs 2018-04-27 11:06:35 -04:00
l3mdev
lapb
llc llc: better deal with too small mtu 2018-05-08 00:11:40 -04:00
mac80211 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-05-26 19:46:15 -04:00
mac802154 net/mac802154: disambiguate mac80215 vs mac802154 trace events 2018-03-28 22:55:18 +02:00
mpls net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
ncsi net/ncsi: Avoid GFP_KERNEL in response handler 2018-06-03 10:42:07 -04:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-03 09:31:58 -04:00
netlabel
netlink net/netlink: make sure the headers line up actual value output 2018-05-04 13:00:57 -04:00
netrom net: Use octal not symbolic permissions 2018-03-26 12:07:48 -04:00
nfc net: remove unnecessary genlmsg_cancel() calls 2018-05-29 09:53:38 -04:00
nsh nsh: fix infinite loop 2018-05-04 12:54:38 -04:00
openvswitch openvswitch: Support conntrack zone limit 2018-05-25 16:45:19 -04:00
packet Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-05-26 19:46:15 -04:00
phonet net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00
psample
qrtr net: qrtr: Expose tunneling endpoint to user space 2018-04-27 15:06:10 -04:00
rds Merge candidates for 4.17-rc 2018-06-02 09:55:44 -07:00
rfkill rfkill: Create rfkill-none LED trigger 2018-05-23 11:26:45 +02:00
rose net: Use octal not symbolic permissions 2018-03-26 12:07:48 -04:00
rxrpc rxrpc: Trace UDP transmission failure 2018-05-10 23:26:01 +01:00
sched Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-03 09:31:58 -04:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-05-26 19:46:15 -04:00
smc net/smc: fix error return code in smc_setsockopt() 2018-06-03 10:38:28 -04:00
strparser strparser: Do not call mod_delayed_work with a timeout of LONG_MAX 2018-04-22 21:09:16 -04:00
sunrpc Merge candidates for 4.17-rc 2018-06-02 09:55:44 -07:00
switchdev
tipc Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-05-11 20:53:22 -04:00
tls Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-05-21 16:01:54 -04:00
unix af_unix: remove redundant lockdep class 2018-04-04 11:13:40 -04:00
vmw_vsock VSOCK: make af_vsock.ko removable again 2018-04-17 09:44:30 -04:00
wimax
wireless Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-05-26 19:46:15 -04:00
x25 net: Use octal not symbolic permissions 2018-03-26 12:07:48 -04:00
xdp xsk: convert atomic_t to refcount_t 2018-05-22 10:25:06 +02:00
xfrm Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-06-03 09:31:58 -04:00
compat.c net: support compat 64-bit time in {s,g}etsockopt 2018-04-27 19:46:06 -04:00
Kconfig net: Introduce generic failover module 2018-05-28 22:59:54 -04:00
Makefile net: add skeleton of bpfilter kernel module 2018-05-23 13:23:40 -04:00
socket.c Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial 2018-04-05 11:56:35 -07:00
sysctl_net.c net: Drop pernet_operations::async 2018-03-27 13:18:09 -04:00