kernel_optimize_test/drivers/net
Tyrel Datwyler 756af9c642 ibmveth: fix DMA unmap error in ibmveth_xmit_start error path
Commit 33a48ab105 ("ibmveth: Fix DMA unmap error") fixed an issue in the
normal code path of ibmveth_xmit_start() that was originally introduced by
Commit 6e8ab30ec6 ("ibmveth: Add scatter-gather support"). This original
fix missed the error path where dma_unmap_page is wrongly called on the
header portion in descs[0] which was mapped with dma_map_single. As a
result a failure to DMA map any of the frags results in a dmesg warning
when CONFIG_DMA_API_DEBUG is enabled.

------------[ cut here ]------------
DMA-API: ibmveth 30000002: device driver frees DMA memory with wrong function
  [device address=0x000000000a430000] [size=172 bytes] [mapped as page] [unmapped as single]
WARNING: CPU: 1 PID: 8426 at kernel/dma/debug.c:1085 check_unmap+0x4fc/0xe10
...
<snip>
...
DMA-API: Mapped at:
ibmveth_start_xmit+0x30c/0xb60
dev_hard_start_xmit+0x100/0x450
sch_direct_xmit+0x224/0x490
__qdisc_run+0x20c/0x980
__dev_queue_xmit+0x1bc/0xf20

This fixes the API misuse by unampping descs[0] with dma_unmap_single.

Fixes: 6e8ab30ec6 ("ibmveth: Add scatter-gather support")
Signed-off-by: Tyrel Datwyler <tyreld@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2018-12-31 15:40:11 -08:00
..
appletalk drivers/net: appletalk/cops: remove redundant if statement and mask 2018-12-24 14:48:26 -08:00
arcnet
bonding
caif
can
dsa net: dsa: bcm_sf2: Propagate error value from mdio_write 2018-12-27 16:22:13 -08:00
ethernet ibmveth: fix DMA unmap error in ibmveth_xmit_start error path 2018-12-31 15:40:11 -08:00
fddi
fjes
hamradio
hippi
hyperv
ieee802154 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-12-20 11:53:36 -08:00
ipvlan
netdevsim
phy Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-12-20 11:53:36 -08:00
plip
ppp ppp: Move PFC decompression to PPP generic layer 2018-12-20 16:49:30 -08:00
slip
team
usb Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-12-21 15:06:20 -08:00
vmxnet3
wan net/wan: fix a double free in x25_asy_open_tty() 2018-12-30 20:22:48 -08:00
wimax
wireless Merge branch 'linus' of git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6 2018-12-27 13:53:32 -08:00
xen-netback
dummy.c
eql.c
geneve.c
gtp.c
ifb.c
Kconfig
LICENSE.SRC
loopback.c
macsec.c
macvlan.c
macvtap.c
Makefile
mdio.c
mii.c
net_failover.c
netconsole.c
nlmon.c
ntb_netdev.c
rionet.c
sb1000.c
Space.c
sungem_phy.c
tap.c
thunderbolt.c
tun.c
veth.c
virtio_net.c virtio-net: ethtool configurable LRO 2018-12-20 19:14:15 -08:00
vrf.c
vsockmon.c
vxlan.c vxlan: Correct merge error. 2018-12-20 16:14:22 -08:00
xen-netfront.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net 2018-12-20 11:53:36 -08:00