Jesper Dangaard Brouer 96c5508e30 xdp: implement xdp_redirect_map for generic XDP ... Using bpf_redirect_map is allowed for generic XDP programs, but the appropriate map lookup was never performed in xdp_do_generic_redirect(). Instead the map-index is directly used as the ifindex. For the xdp_redirect_map sample in SKB-mode '-S', this resulted in trying sending on ifindex 0 which isn't valid, resulting in getting SKB packets dropped. Thus, the reported performance numbers are wrong in commit 24251c2647 ("samples/bpf: add option for native and skb mode for redirect apps") for the 'xdp_redirect_map -S' case. Before commit 109980b894 ("bpf: don't select potentially stale ri->map from buggy xdp progs") it could crash the kernel. Like this commit also check that the map_owner owner is correct before dereferencing the map pointer. But make sure that this API misusage can be caught by a tracepoint. Thus, allowing userspace via tracepoints to detect misbehaving bpf_progs. Fixes: 6103aa96ec ("net: implement XDP_REDIRECT for xdp generic") Fixes: 24251c2647 ("samples/bpf: add option for native and skb mode for redirect apps") Signed-off-by: Jesper Dangaard Brouer <brouer@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2017-09-11 14:33:00 -07:00
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acpi	Device properties framework updates for v4.14-rc1	2017-09-05 12:50:00 -07:00
asm-generic	mm: soft-dirty: keep soft-dirty bits over thp migration	2017-09-08 18:26:45 -07:00
clocksource
crypto
drm	lib/interval_tree: fast overlap detection	2017-09-08 18:26:49 -07:00
dt-bindings	LED updates for 4.14	2017-09-07 14:33:13 -07:00
keys
kvm
linux	perf/bpf: fix a clang compilation issue	2017-09-11 14:28:45 -07:00
math-emu
media	media updates for v4.14-rc1	2017-09-07 12:53:14 -07:00
memory
misc
net	Merge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf	2017-09-08 11:35:55 -07:00
pcmcia
ras
rdma	More RDMA work and some op-structure constification from Chuck Lever,	2017-09-09 13:31:49 -07:00
scsi	Merge branch 'fixes' into misc	2017-09-07 12:12:43 -07:00
soc
sound	sound updates for 4.14-rc1	2017-09-07 12:44:53 -07:00
target
trace	xdp: implement xdp_redirect_map for generic XDP	2017-09-11 14:33:00 -07:00
uapi	Merge branch 'for-4.14/block-postmerge' of git://git.kernel.dk/linux-block	2017-09-09 12:49:01 -07:00
video
xen