Daniel Borkmann c540594f86 bpf, mlx4: fix prog refcount in mlx4_en_try_alloc_resources error path ... Commit 67f8b1dcb9 ("net/mlx4_en: Refactor the XDP forwarding rings scheme") added a bug in that the prog's reference count is not dropped in the error path when mlx4_en_try_alloc_resources() is failing from mlx4_xdp_set(). We previously took bpf_prog_add(prog, priv->rx_ring_num - 1), that we need to release again. Earlier in the call path, dev_change_xdp_fd() itself holds a reference to the prog as well (hence the '- 1' in the bpf_prog_add()), so a simple atomic_sub() is safe to use here. When an error is propagated, then bpf_prog_put() is called eventually from dev_change_xdp_fd() Fixes: 67f8b1dcb9 ("net/mlx4_en: Refactor the XDP forwarding rings scheme") Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>		2016-11-12 23:31:57 -05:00
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acpi	Merge branches 'acpi-wdat' and 'acpi-cppc'	2016-10-21 22:24:23 +02:00
asm-generic	kconfig.h: remove config_enabled() macro	2016-10-27 18:43:43 -07:00
clocksource	…
crypto	…
drm	…
dt-bindings	net: phy: Cleanup the Edge-Rate feature in Microsemi PHYs.	2016-10-14 10:06:13 -04:00
keys	…
kvm	…
linux	bpf, mlx4: fix prog refcount in mlx4_en_try_alloc_resources error path	2016-11-12 23:31:57 -05:00
math-emu	…
media	…
memory	…
misc	…
net	tc_act: Remove tcf_act macro	2016-11-09 21:14:05 -05:00
pcmcia	…
ras	…
rdma	…
rxrpc	…
scsi	…
soc	powerpc updates for 4.9 #2	2016-10-14 11:07:42 -07:00
sound	…
target	target: Make EXTENDED_COPY 0xe4 failure return COPY TARGET DEVICE NOT REACHABLE	2016-10-19 21:22:32 -07:00
trace	Merge branch 'for-4.9' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/cgroup	2016-10-14 12:18:50 -07:00
uapi	ipv6: sr: add core files for SR HMAC support	2016-11-09 20:40:06 -05:00
video	fbdev changes for 4.9	2016-10-12 11:01:37 -07:00
xen	…
Kbuild	…