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Haiyang Zhang 184367dce4 hv_netvsc: Fix XDP refcnt for synthetic and VF NICs 
The caller of XDP_SETUP_PROG has already incremented refcnt in
__bpf_prog_get(), so drivers should only increment refcnt by
num_queues - 1.

To fix the issue, update netvsc_xdp_set() to add the correct number
to refcnt.

Hold a refcnt in netvsc_xdp_set()’s other caller, netvsc_attach().

And, do the same in netvsc_vf_setxdp(). Otherwise, every time when VF is
removed and added from the host side, the refcnt will be decreased by one,
which may cause page fault when unloading xdp program.

Fixes: 351e158139 ("hv_netvsc: Add XDP support")
Signed-off-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-02-07 11:33:01 +01:00
arch ARM development updates for 5.6-rc1: 2020-02-04 13:12:19 +00:00
block
certs
crypto treewide: remove redundant IS_ERR() before error code check 2020-02-04 03:05:27 +00:00
Documentation Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-02-04 13:32:20 +00:00
drivers hv_netvsc: Fix XDP refcnt for synthetic and VF NICs 2020-02-07 11:33:01 +01:00
fs overlayfs update for 5.6 2020-02-04 11:45:21 +00:00
include net/mlx5: Deprecate usage of generic TLS HW capability bit 2020-02-06 12:24:24 -08:00
init init/main.c: fix misleading "This architecture does not have kernel memory protection" message 2020-01-31 10:30:41 -08:00
ipc proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
kernel proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
lib lib: new testcases for bitmap_parse{_user} 2020-02-04 03:05:27 +00:00
LICENSES
mm Merge branch 'akpm' (patches from Andrew) 2020-02-04 07:24:48 +00:00
net taprio: Fix dropping packets when using taprio + ETF offloading 2020-02-07 11:30:03 +01:00
samples proc: convert everything to "struct proc_ops" 2020-02-04 03:05:26 +00:00
scripts mm: remove __krealloc 2020-02-04 03:05:24 +00:00
security
sound treewide: remove redundant IS_ERR() before error code check 2020-02-04 03:05:27 +00:00
tools mptcp: fix use-after-free for ipv6 2020-02-06 11:25:09 +01:00
usr initramfs: do not show compression mode choice if INITRAMFS_SOURCE is empty 2020-02-03 17:31:43 +00:00
virt Merge branch 'cve-2019-3016' into kvm-next-5.6 2020-01-30 18:47:59 +01:00
.clang-format
.cocciconfig
.get_maintainer.ignore
.gitattributes
.gitignore
.mailmap RTC for 5.6 2020-02-04 07:03:40 +00:00
COPYING
CREDITS
Kbuild
Kconfig
MAINTAINERS Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-02-04 13:32:20 +00:00
Makefile Kbuild updates for v5.6 2020-02-01 10:01:52 -08:00
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.