Tushar Dave c70b17b775 netpoll: Check for skb->queue_mapping ... Reducing real_num_tx_queues needs to be in sync with skb queue_mapping otherwise skbs with queue_mapping greater than real_num_tx_queues can be sent to the underlying driver and can result in kernel panic. One such event is running netconsole and enabling VF on the same device. Or running netconsole and changing number of tx queues via ethtool on same device. e.g. Unable to handle kernel NULL pointer dereference tsk->{mm,active_mm}->context = 0000000000001525 tsk->{mm,active_mm}->pgd = fff800130ff9a000 \|/ ____ \|/ "@'/ .. \`@" /_| \__/ |_\ \__U_/ kworker/48:1(475): Oops [#1] CPU: 48 PID: 475 Comm: kworker/48:1 Tainted: G OE 4.11.0-rc3-davem-net+ #7 Workqueue: events queue_process task: fff80013113299c0 task.stack: fff800131132c000 TSTATE: 0000004480e01600 TPC: 00000000103f9e3c TNPC: 00000000103f9e40 Y: 00000000 Tainted: G OE TPC: <ixgbe_xmit_frame_ring+0x7c/0x6c0 [ixgbe]> g0: 0000000000000000 g1: 0000000000003fff g2: 0000000000000000 g3: 0000000000000001 g4: fff80013113299c0 g5: fff8001fa6808000 g6: fff800131132c000 g7: 00000000000000c0 o0: fff8001fa760c460 o1: fff8001311329a50 o2: fff8001fa7607504 o3: 0000000000000003 o4: fff8001f96e63a40 o5: fff8001311d77ec0 sp: fff800131132f0e1 ret_pc: 000000000049ed94 RPC: <set_next_entity+0x34/0xb80> l0: 0000000000000000 l1: 0000000000000800 l2: 0000000000000000 l3: 0000000000000000 l4: 000b2aa30e34b10d l5: 0000000000000000 l6: 0000000000000000 l7: fff8001fa7605028 i0: fff80013111a8a00 i1: fff80013155a0780 i2: 0000000000000000 i3: 0000000000000000 i4: 0000000000000000 i5: 0000000000100000 i6: fff800131132f1a1 i7: 00000000103fa4b0 I7: <ixgbe_xmit_frame+0x30/0xa0 [ixgbe]> Call Trace: [00000000103fa4b0] ixgbe_xmit_frame+0x30/0xa0 [ixgbe] [0000000000998c74] netpoll_start_xmit+0xf4/0x200 [0000000000998e10] queue_process+0x90/0x160 [0000000000485fa8] process_one_work+0x188/0x480 [0000000000486410] worker_thread+0x170/0x4c0 [000000000048c6b8] kthread+0xd8/0x120 [0000000000406064] ret_from_fork+0x1c/0x2c [0000000000000000] (null) Disabling lock debugging due to kernel taint Caller[00000000103fa4b0]: ixgbe_xmit_frame+0x30/0xa0 [ixgbe] Caller[0000000000998c74]: netpoll_start_xmit+0xf4/0x200 Caller[0000000000998e10]: queue_process+0x90/0x160 Caller[0000000000485fa8]: process_one_work+0x188/0x480 Caller[0000000000486410]: worker_thread+0x170/0x4c0 Caller[000000000048c6b8]: kthread+0xd8/0x120 Caller[0000000000406064]: ret_from_fork+0x1c/0x2c Caller[0000000000000000]: (null) Signed-off-by: Tushar Dave <tushar.n.dave@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-04-21 15:45:19 -04:00
..
6lowpan	6lowpan: use rb_entry()	2017-01-22 16:46:13 -05:00
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: remove ndo_neigh_{construct, destroy} from stacked devices	2017-02-06 11:25:57 -05:00
appletalk	lib/vsprintf.c: remove %Z support	2017-02-27 18:43:47 -08:00
atm	net: Work around lockdep limitation in sockets that use sockets	2017-03-09 18:23:27 -08:00
ax25	net: Work around lockdep limitation in sockets that use sockets	2017-03-09 18:23:27 -08:00
batman-adv	Here are two batman-adv bugfixes:	2017-03-16 12:05:38 -07:00
bluetooth	net: Work around lockdep limitation in sockets that use sockets	2017-03-09 18:23:27 -08:00
bridge	bridge: netlink: register netdevice before executing changelink	2017-04-11 22:22:44 -04:00
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: bcm: fix hrtimer/tasklet termination in bcm op removal	2017-01-30 11:05:04 +01:00
ceph	libceph: force GFP_NOIO for socket allocations	2017-03-23 12:03:36 +01:00
core	netpoll: Check for skb->queue_mapping	2017-04-21 15:45:19 -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	net: Work around lockdep limitation in sockets that use sockets	2017-03-09 18:23:27 -08:00
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	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-02-11 02:31:11 -05:00
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-timestamp: avoid use-after-free in ip_recv_error	2017-04-17 12:59:22 -04:00
ipv6	ip6mr: fix notification device destruction	2017-04-21 15:35:47 -04:00
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	af_key: Fix sadb_x_ipsecrequest parsing	2017-04-18 08:26:03 +02:00
l2tp	l2tp: don't mask errors in pppol2tp_getsockopt()	2017-04-08 08:29:04 -07:00
l3mdev	net: ipv6: Remove l3mdev_get_saddr6	2016-09-10 23:12:53 -07:00
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: reject ToDS broadcast data frames	2017-04-20 15:37:46 -04:00
mac802154	sched/headers: Prepare to use <linux/rcuupdate.h> instead of <linux/rculist.h> in <linux/sched.h>	2017-03-02 08:42:38 +01:00
mpls	net: mpls: Fix nexthop alive tracking on down events	2017-03-16 20:22:18 -07:00
ncsi	net/ncsi: Improve HNCDSC AEN handler	2016-10-20 11:23:08 -04:00
netfilter	netfilter: nft_hash: do not dump the auto generated seed	2017-04-13 23:20:13 +02:00
netlabel	netlabel: add CALIPSO to the list of built-in protocols	2017-01-06 22:20:45 -05:00
netlink	genetlink: fix counting regression on ctrl_dumpfamily()	2017-03-22 15:38:43 -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	openvswitch: Fix ovs_flow_key_update()	2017-04-01 12:16:46 -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	net: qrtr: potential use after free in qrtr_sendmsg()	2017-04-21 15:19:27 -04:00
rds	net: Work around lockdep limitation in sockets that use sockets	2017-03-09 18:23:27 -08:00
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: Ignore BUSY packets on old calls	2017-03-16 21:27:57 -07:00
sched	net sched actions: allocate act cookie early	2017-04-20 16:32:07 -04:00
sctp	sctp: listen on the sock only when it's state is listening or closed	2017-04-06 13:55:51 -07:00
smc	net: Work around lockdep limitation in sockets that use sockets	2017-03-09 18:23:27 -08:00
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	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2016-10-30 12:42:58 -04:00
tipc	tipc: fix nametbl deadlock at tipc_nametbl_unsubscribe	2017-03-22 11:59:16 -07:00
unix	net: unix: properly re-increment inflight counter of GC discarded candidates	2017-03-21 15:25:10 -07:00
vmw_vsock	vsock: cancel packets when failing to connect	2017-03-21 14:41:47 -07:00
wimax	genetlink: mark families as __ro_after_init	2016-10-27 16:16:09 -04:00
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 'apw' (xfrm_user fixes)	2017-03-29 13:26:22 -07:00
Kconfig	bpf: make jited programs visible in traces	2017-02-17 13:40:05 -05:00
Makefile	net: Introduce ife encapsulation module	2017-02-03 15:16:45 -05:00
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	tcp: mark skbs with SCM_TIMESTAMPING_OPT_STATS	2017-03-21 18:44:17 -07:00
sysctl_net.c	Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ebiederm/user-namespace	2016-10-06 09:52:23 -07:00