Jason Wang 017b29c38c virito-net: set queues after reset during xdp_set ... We set queues before reset which will cause a crash[1]. This is because is_xdp_raw_buffer_queue() depends on the old xdp queue pairs number to do the correct detection. So fix this by - passing xdp queue pairs and current queue pairs to virtnet_reset() - change vi->xdp_qp after reset but before refill, to make sure both free_unused_bufs() and refill can make correct detection of XDP. - remove the duplicated queue pairs setting before virtnet_reset() since we will do it inside virtnet_reset() [1] [ 74.328168] general protection fault: 0000 [#1] SMP [ 74.328625] Modules linked in: nfsd xfs libcrc32c virtio_net virtio_pci [ 74.329117] CPU: 0 PID: 2849 Comm: xdp2 Not tainted 4.10.0-rc7+ #499 [ 74.329577] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.10.1-0-g8891697-prebuilt.qemu-project.org 04/01/2014 [ 74.330424] task: ffff88007a894000 task.stack: ffffc90004388000 [ 74.330844] RIP: 0010:skb_release_head_state+0x28/0x80 [ 74.331298] RSP: 0018:ffffc9000438b8d0 EFLAGS: 00010206 [ 74.331676] RAX: 0000000000000000 RBX: ffff88007ad96300 RCX: 0000000000000000 [ 74.332217] RDX: ffff88007fc137a8 RSI: ffff88007fc0db28 RDI: 0001bf00000001be [ 74.332758] RBP: ffffc9000438b8d8 R08: 000000000005008f R09: 00000000000005f9 [ 74.333274] R10: ffff88007d001700 R11: ffffffff820a8a4d R12: ffff88007ad96300 [ 74.333787] R13: 0000000000000002 R14: ffff880036604000 R15: 000077ff80000000 [ 74.334308] FS: 00007fc70d8a7b40(0000) GS:ffff88007fc00000(0000) knlGS:0000000000000000 [ 74.334891] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 74.335314] CR2: 00007fff4144a710 CR3: 000000007ab56000 CR4: 00000000003406f0 [ 74.335830] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 74.336373] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 74.336895] Call Trace: [ 74.337086] skb_release_all+0xd/0x30 [ 74.337356] consume_skb+0x2c/0x90 [ 74.337607] free_unused_bufs+0x1ff/0x270 [virtio_net] [ 74.337988] ? vp_synchronize_vectors+0x3b/0x60 [virtio_pci] [ 74.338398] virtnet_xdp+0x21e/0x440 [virtio_net] [ 74.338741] dev_change_xdp_fd+0x101/0x140 [ 74.339048] do_setlink+0xcf4/0xd20 [ 74.339304] ? symcmp+0xf/0x20 [ 74.339529] ? mls_level_isvalid+0x52/0x60 [ 74.339828] ? mls_range_isvalid+0x43/0x50 [ 74.340135] ? nla_parse+0xa0/0x100 [ 74.340400] rtnl_setlink+0xd4/0x120 [ 74.340664] ? cpumask_next_and+0x30/0x50 [ 74.340966] rtnetlink_rcv_msg+0x7f/0x1f0 [ 74.341259] ? sock_has_perm+0x59/0x60 [ 74.341586] ? napi_consume_skb+0xe2/0x100 [ 74.342010] ? rtnl_newlink+0x890/0x890 [ 74.342435] netlink_rcv_skb+0x92/0xb0 [ 74.342846] rtnetlink_rcv+0x23/0x30 [ 74.343277] netlink_unicast+0x162/0x210 [ 74.343677] netlink_sendmsg+0x2db/0x390 [ 74.343968] sock_sendmsg+0x33/0x40 [ 74.344233] SYSC_sendto+0xee/0x160 [ 74.344482] ? SYSC_bind+0xb0/0xe0 [ 74.344806] ? sock_alloc_file+0x92/0x110 [ 74.345106] ? fd_install+0x20/0x30 [ 74.345360] ? sock_map_fd+0x3f/0x60 [ 74.345586] SyS_sendto+0x9/0x10 [ 74.345790] entry_SYSCALL_64_fastpath+0x1a/0xa9 [ 74.346086] RIP: 0033:0x7fc70d1b8f6d [ 74.346312] RSP: 002b:00007fff4144a708 EFLAGS: 00000246 ORIG_RAX: 000000000000002c [ 74.346785] RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007fc70d1b8f6d [ 74.347244] RDX: 000000000000002c RSI: 00007fff4144a720 RDI: 0000000000000003 [ 74.347683] RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 [ 74.348544] R10: 0000000000000000 R11: 0000000000000246 R12: 00007fff4144bd90 [ 74.349082] R13: 0000000000000002 R14: 0000000000000002 R15: 00007fff4144cda0 [ 74.349607] Code: 00 00 00 55 48 89 e5 53 48 89 fb 48 8b 7f 58 48 85 ff 74 0e 40 f6 c7 01 74 3d 48 c7 43 58 00 00 00 00 48 8b 7b 68 48 85 ff 74 05 <f0> ff 0f 74 20 48 8b 43 60 48 85 c0 74 14 65 8b 15 f3 ab 8d 7e [ 74.351008] RIP: skb_release_head_state+0x28/0x80 RSP: ffffc9000438b8d0 [ 74.351625] ---[ end trace fe6e19fd11cfc80b ]--- Fixes: 2de2f7f40e ("virtio_net: XDP support for adjust_head") Cc: John Fastabend <john.fastabend@gmail.com> Signed-off-by: Jason Wang <jasowang@redhat.com> Acked-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-02-20 22:22:20 -05:00
..
appletalk
arcnet
bonding
caif
can
cris
dsa	net:dsa:mv88e6xxx: use watchdog ops for 6097 chip	2017-02-14 11:45:28 -05:00
ethernet	dpaa_eth: implement ioctl() for PHY-related ops	2017-02-20 22:21:23 -05:00
fddi
fjes
hamradio
hippi
hyperv	netvsc: fix typo on statistics	2017-02-17 15:06:52 -05:00
ieee802154
ipvlan	ipvtap: IP-VLAN based tap driver	2017-02-11 20:59:41 -05:00
irda	net: irda: au1k_ir: drop useless include	2017-02-14 14:51:03 -05:00
phy	net: phy: Check phydev->drv	2017-02-20 10:15:11 -05:00
plip
ppp
slip
team
usb	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-02-11 02:31:11 -05:00
vmxnet3
wan	net/wan: add MODULE_LICENSE for fsl_ucc_hdlc	2017-02-17 15:20:43 -05:00
wimax
wireless	Merge ath-next from git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git	2017-02-15 16:01:04 +02:00
xen-netback	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-02-16 19:34:01 -05:00
dummy.c
eql.c
geneve.c
gtp.c
ifb.c
Kconfig	vmxnet3: prevent building with 64K pages	2017-02-17 15:25:49 -05:00
LICENSE.SRC
loopback.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-02-11 02:31:11 -05:00
macsec.c
macvlan.c	tap: Abstract type of virtual interface from tap implementation	2017-02-11 20:59:41 -05:00
macvtap.c	tap: tap as an independent module	2017-02-11 20:59:41 -05:00
Makefile	ipvtap: IP-VLAN based tap driver	2017-02-11 20:59:41 -05:00
mdio.c
mii.c
netconsole.c
nlmon.c
ntb_netdev.c
rionet.c
sb1000.c
Space.c
sungem_phy.c
tap.c	tap: tap as an independent module	2017-02-11 20:59:41 -05:00
tun.c
veth.c
virtio_net.c	virito-net: set queues after reset during xdp_set	2017-02-20 22:22:20 -05:00
vrf.c	net: rename dst_neigh_output back to neigh_output	2017-02-11 21:25:18 -05:00
vxlan.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-02-19 11:18:46 -05:00
xen-netfront.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-02-11 02:31:11 -05:00