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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>
 		2016-01-06 00:43:52 -05:00
..
boot powerpc/sbc8641: drop bogus PHY IRQ entries from DTS file 2015-12-09 14:00:39 +11:00
configs powerpc updates for 4.4 2015-11-05 23:38:43 -08:00
crypto crypto: powerpc/md5 - use md5 IV MD5_HX instead of their raw value 2015-05-18 12:20:20 +08:00
include Partial revert of "powerpc: Individual System V IPC system calls" 2015-12-16 21:52:32 +11:00
kernel Revert "powerpc/eeh: Don't unfreeze PHB PE after reset" 2015-12-09 14:05:10 +11:00
kvm KVM: PPC: Book3S HV: Prohibit setting illegal transaction state in MSR 2015-12-10 11:34:27 +11:00
lib powerpc32: memset: only use dcbz once cache is enabled 2015-09-17 10:36:53 +10:00
math-emu
…
mm powerpc updates for 4.4 2015-11-05 23:38:43 -08:00
net net: filter: make JITs zero A for SKF_AD_ALU_XOR_X 2016-01-06 00:43:52 -05:00
oprofile powerpc: Remove mtmsrd(), use existing mtmsr() 2015-07-13 15:47:28 +10:00
perf powerpc updates for 4.4 2015-11-05 23:38:43 -08:00
platforms powerpc/opal-irqchip: Fix deadlock introduced by "Fix double endian conversion" 2015-12-18 22:24:15 +11:00
sysdev Merge branch 'for-4.4/io-poll' of git://git.kernel.dk/linux-block 2015-11-10 17:23:49 -08:00
xmon powerpc/xmon: Add some more elements to the existing PACA dump list 2015-10-15 20:32:02 +11:00
Kconfig powerpc/book3e-64: Enable kexec 2015-10-27 18:13:30 -05:00
Kconfig.debug powerpc: Make STRICT_MM_TYPECHECKS a config option 2015-05-11 19:53:59 +10:00
Makefile powerpc/cell: Drop CONFIG_TUNE_CELL in favour of CONFIG_CELL_CPU 2015-10-19 19:51:18 +11:00
relocs_check.sh powerpc: Convert relocs_check to a shell script using grep 2015-03-23 14:47:39 +11:00