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Filename Latest commit message Latest commit date
Dag Moxnes d8d9ec7dc5 RDMA/core: Fix race when resolving IP address 
Use the neighbour lock when copying the MAC address from the neighbour
data struct in dst_fetch_ha.

When not using the lock, it is possible for the function to race with
neigh_update(), causing it to copy an torn MAC address:

rdma_resolve_addr()
  rdma_resolve_ip()
    addr_resolve()
      addr_resolve_neigh()
        fetch_ha()
          dst_fetch_ha()
	     memcpy(dev_addr->dst_dev_addr, n->ha, MAX_ADDR_LEN)

and

net_ioctl()
  arp_ioctl()
    arp_rec_delete()
      arp_invalidate()
        neigh_update()
          __neigh_update()
	    memcpy(&neigh->ha, lladdr, dev->addr_len)

It is possible to provoke this error by calling rdma_resolve_addr() in a
tight loop, while deleting the corresponding ARP entry in another tight
loop.

Fixes: 51d4597451 ("infiniband: addr: Consolidate code to fetch neighbour hardware address from dst.")
Signed-off-by: Dag Moxnes <dag.moxnes@oracle.com>
Signed-off-by: Håkon Bugge <haakon.bugge@oracle.com>
Reviewed-by: Jason Gunthorpe <jgg@mellanox.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
2019-07-09 16:27:04 -03:00
arch powerpc fixes for 5.2 #5 2019-06-22 09:09:42 -07:00
block
certs
crypto
Documentation docs: infiniband: add it to the driver-api bookset 2019-07-08 14:22:56 -03:00
drivers RDMA/core: Fix race when resolving IP address 2019-07-09 16:27:04 -03:00
fs More NFS client fixes for Linux 5.2 2019-06-21 13:45:41 -07:00
include RDMA/core: Make rdma_counter.h compile stand alone 2019-07-09 09:44:47 -03:00
init
ipc
kernel SPDX update for 5.2-rc6 2019-06-21 09:58:42 -07:00
lib linux/dim: Implement RDMA adaptive moderation (DIM) 2019-07-08 16:37:21 -03:00
LICENSES
mm
net Linux 5.2-rc6 2019-06-28 21:18:23 -03:00
samples SPDX update for 5.2-rc6 2019-06-21 09:58:42 -07:00
scripts
security SPDX update for 5.2-rc6 2019-06-21 09:58:42 -07:00
sound
tools SPDX update for 5.2-rc6 2019-06-21 09:58:42 -07:00
usr
virt SPDX update for 5.2-rc6 2019-06-21 09:58:42 -07:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS Merge tag 'blk-dim-v2' into rdma.git for-next 2019-07-08 16:37:21 -03:00
Makefile Linux 5.2-rc6 2019-06-22 16:01:36 -07:00
README

README 

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.