linux/arch/sparc
Rabin Vincent 55795ef546 net: filter: make JITs zero A for SKF_AD_ALU_XOR_X
The SKF_AD_ALU_XOR_X ancillary is not like the other ancillary data
instructions since it XORs A with X while all the others replace A with
some loaded value.  All the BPF JITs fail to clear A if this is used as
the first instruction in a filter.  This was found using american fuzzy
lop.

Add a helper to determine if A needs to be cleared given the first
instruction in a filter, and use this in the JITs.  Except for ARM, the
rest have only been compile-tested.

Fixes: 3480593131 ("net: filter: get rid of BPF_S_* enum")
Signed-off-by: Rabin Vincent <rabin@rab.in>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-01-06 00:43:52 -05:00
..
boot
configs
crypto crypto: sparc - initialize blkcipher.ivsize 2015-10-08 21:36:48 +08:00
include sparc: Wire up mlock2 system call. 2015-12-31 15:38:56 -05:00
kernel sparc: Wire up mlock2 system call. 2015-12-31 15:38:56 -05:00
lib sparc64: fix FP corruption in user copy functions 2015-12-24 12:13:18 -05:00
math-emu
mm sparc64: Fix numa distance values 2015-11-04 12:14:49 -08:00
net net: filter: make JITs zero A for SKF_AD_ALU_XOR_X 2016-01-06 00:43:52 -05:00
oprofile
power
prom
Kbuild
Kconfig
Kconfig.debug
Makefile