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linux/arch/sparc
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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>
History 2016-01-06 00:43:52 -05:00
..
boot sparc: Add "install" target 2014-08-04 20:45:59 -07:00
configs sparc: Set CONFIG_NET=y in defconfigs 2014-09-24 13:38:30 -04:00
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 arch/sparc/math-emu/math_32.c: drop stray break operator 2014-08-04 20:29:06 -07:00
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 sparc: using HZ needs an include of linux/param.h 2009-10-05 00:46:08 -07:00
power Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc 2014-10-11 20:36:34 -04:00
prom sparc64: Fix register corruption in top-most kernel stack frame during boot. 2014-10-24 09:52:49 -07:00
Kbuild sparc64: Add SHA1 driver making use of the 'sha1' instruction. 2012-08-20 15:08:49 -07:00
Kconfig sparc: time: Replace update_persistent_clock() with CONFIG_RTC_SYSTOHC 2015-06-25 01:13:43 +02:00
Kconfig.debug lib: consolidate DEBUG_STACK_USAGE option 2011-05-25 08:39:54 -07:00
Makefile sparc: Add "install" target 2014-08-04 20:45:59 -07:00