Scott Wood 9b70de6d02 bnx2x: Align RX buffers ... The bnx2x driver is not providing proper alignment on the receive buffers it passes to build_skb(), causing skb_shared_info to be misaligned. skb_shared_info contains an atomic, and while PPC normally supports unaligned accesses, it does not support unaligned atomics. Aligning the size of rx buffers will ensure that page_frag_alloc() returns aligned addresses. This can be reproduced on PPC by setting the network MTU to 1450 (or other non-multiple-of-4) and then generating sufficient inbound network traffic (one or two large "wget"s usually does it), producing the following oops: Unable to handle kernel paging request for unaligned access at address 0xc00000ffc43af656 Faulting instruction address: 0xc00000000080ef8c Oops: Kernel access of bad area, sig: 7 [#1] SMP NR_CPUS=2048 NUMA PowerNV Modules linked in: vmx_crypto powernv_rng rng_core powernv_op_panel leds_powernv led_class nfsd ip_tables x_tables autofs4 xfs lpfc bnx2x mdio libcrc32c crc_t10dif crct10dif_generic crct10dif_common CPU: 104 PID: 0 Comm: swapper/104 Not tainted 4.11.0-rc8-00088-g4c761da #2 task: c00000ffd4892400 task.stack: c00000ffd4920000 NIP: c00000000080ef8c LR: c00000000080eee8 CTR: c0000000001f8320 REGS: c00000ffffc33710 TRAP: 0600 Not tainted (4.11.0-rc8-00088-g4c761da) MSR: 9000000000009033 <SF,HV,EE,ME,IR,DR,RI,LE> CR: 24082042 XER: 00000000 CFAR: c00000000080eea0 DAR: c00000ffc43af656 DSISR: 00000000 SOFTE: 1 GPR00: c000000000907f64 c00000ffffc33990 c000000000dd3b00 c00000ffcaf22100 GPR04: c00000ffcaf22e00 0000000000000000 0000000000000000 0000000000000000 GPR08: 0000000000b80008 c00000ffc43af636 c00000ffc43af656 0000000000000000 GPR12: c0000000001f6f00 c00000000fe1a000 000000000000049f 000000000000c51f GPR16: 00000000ffffef33 0000000000000000 0000000000008a43 0000000000000001 GPR20: c00000ffc58a90c0 0000000000000000 000000000000dd86 0000000000000000 GPR24: c000007fd0ed10c0 00000000ffffffff 0000000000000158 000000000000014a GPR28: c00000ffc43af010 c00000ffc9144000 c00000ffcaf22e00 c00000ffcaf22100 NIP [c00000000080ef8c] __skb_clone+0xdc/0x140 LR [c00000000080eee8] __skb_clone+0x38/0x140 Call Trace: [c00000ffffc33990] [c00000000080fb74] skb_clone+0x74/0x110 (unreliable) [c00000ffffc339c0] [c000000000907f64] packet_rcv+0x144/0x510 [c00000ffffc33a40] [c000000000827b64] __netif_receive_skb_core+0x5b4/0xd80 [c00000ffffc33b00] [c00000000082b2bc] netif_receive_skb_internal+0x2c/0xc0 [c00000ffffc33b40] [c00000000082c49c] napi_gro_receive+0x11c/0x260 [c00000ffffc33b80] [d000000066483d68] bnx2x_poll+0xcf8/0x17b0 [bnx2x] [c00000ffffc33d00] [c00000000082babc] net_rx_action+0x31c/0x480 [c00000ffffc33e10] [c0000000000d5a44] __do_softirq+0x164/0x3d0 [c00000ffffc33f00] [c0000000000d60a8] irq_exit+0x108/0x120 [c00000ffffc33f20] [c000000000015b98] __do_irq+0x98/0x200 [c00000ffffc33f90] [c000000000027f14] call_do_irq+0x14/0x24 [c00000ffd4923a90] [c000000000015d94] do_IRQ+0x94/0x110 [c00000ffd4923ae0] [c000000000008d90] hardware_interrupt_common+0x150/0x160 Signed-off-by: David S. Miller <davem@davemloft.net>		2017-04-30 22:50:19 -04:00
..
appletalk
arcnet
bonding	bonding: fix wq initialization for links created via netlink	2017-04-21 15:28:37 -04:00
caif
can	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-04-26 22:39:08 -04:00
cris	net: cris: eth_v10: use new api ethtool_{get|set}_link_ksettings	2017-03-27 15:53:19 -07:00
dsa	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-04-26 22:39:08 -04:00
ethernet	bnx2x: Align RX buffers	2017-04-30 22:50:19 -04:00
fddi
fjes	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-03-23 16:41:27 -07:00
hamradio
hippi
hyperv	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-04-26 22:39:08 -04:00
ieee802154	ieee802154: don't select COMMON_CLK	2017-04-22 10:28:40 +02:00
ipvlan	ipvlan: use pernet operations and restrict l3s hooks to master netns	2017-04-25 10:43:22 -04:00
irda	irda: vlsi_ir: fix check for DMA mapping errors	2017-03-25 20:14:40 -07:00
phy	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-04-26 22:39:08 -04:00
plip
ppp
slip
team	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-04-26 22:39:08 -04:00
usb	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-04-26 22:39:08 -04:00
vmxnet3	net: vmxnet3: use new api ethtool_{get|set}_link_ksettings	2017-03-22 19:26:52 -07:00
wan	wan: pc300too: abort path on failure	2017-04-24 15:51:31 -04:00
wimax	net: wimax/i2400m: fix NULL-deref at probe	2017-03-13 12:28:40 -07:00
wireless	Another set of patches for -next:	2017-04-28 14:41:15 -04:00
xen-netback	xen-netback: fix race condition on XenBus disconnect	2017-03-12 23:44:43 -07:00
dummy.c	Enable tx timestamping on loopback and dummy	2017-03-21 14:40:01 -07:00
eql.c
geneve.c	geneve: fix incorrect setting of UDP checksum flag	2017-04-30 22:31:16 -04:00
gtp.c	gtp: support SGSN-side tunnels	2017-03-25 20:11:19 -07:00
ifb.c
Kconfig	VSOCK: Add vsockmon device	2017-04-24 12:35:56 -04:00
LICENSE.SRC
loopback.c	Cleanup some warning from timestamping code.	2017-03-21 14:40:02 -07:00
macsec.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-04-26 22:39:08 -04:00
macvlan.c	macvlan: Fix device ref leak when purging bc_queue	2017-04-25 10:42:10 -04:00
macvtap.c
Makefile	VSOCK: Add vsockmon device	2017-04-24 12:35:56 -04:00
mdio.c
mii.c
netconsole.c
nlmon.c
ntb_netdev.c	net: net_netdev: use new api ethtool_{get|set}_link_ksettings	2017-03-13 15:25:53 -07:00
rionet.c
sb1000.c
Space.c
sungem_phy.c
tap.c	sched/headers: Move task_struct::signal and task_struct::sighand types and accessors into <linux/sched/signal.h>	2017-03-03 01:43:37 +01:00
tun.c	Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net	2017-03-23 16:41:27 -07:00
veth.c	netlink: pass extended ACK struct to parsing functions	2017-04-13 13:58:22 -04:00
virtio_net.c	virtio-net: use netif_tx_napi_add for tx napi	2017-04-30 22:33:04 -04:00
vrf.c	net: vrf: Do not allow looback to be moved to a VRF	2017-04-27 16:49:43 -04:00
vsockmon.c	VSOCK: Add vsockmon device	2017-04-24 12:35:56 -04:00
vxlan.c	vxlan: do not output confusing error message	2017-04-30 22:30:13 -04:00
xen-netfront.c