https://github.com/torvalds/linux
Revision 55795ef5469290f89f04e12e662ded604909e462 authored by Rabin Vincent on 05 January 2016, 15:23:07 UTC, committed by David S. Miller on 06 January 2016, 05:43:52 UTC
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: 3480593131e0 ("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>
1 parent ff62198
Tip revision: 55795ef5469290f89f04e12e662ded604909e462 authored by Rabin Vincent on 05 January 2016, 15:23:07 UTC
net: filter: make JITs zero A for SKF_AD_ALU_XOR_X
net: filter: make JITs zero A for SKF_AD_ALU_XOR_X
Tip revision: 55795ef
last.c
/*
* Advanced Linux Sound Architecture
* Copyright (c) by Jaroslav Kysela <perex@perex.cz>
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
*/
#include <linux/init.h>
#include <sound/core.h>
static int __init alsa_sound_last_init(void)
{
int idx, ok = 0;
printk(KERN_INFO "ALSA device list:\n");
for (idx = 0; idx < SNDRV_CARDS; idx++)
if (snd_cards[idx] != NULL) {
printk(KERN_INFO " #%i: %s\n", idx, snd_cards[idx]->longname);
ok++;
}
if (ok == 0)
printk(KERN_INFO " No soundcards found.\n");
return 0;
}
late_initcall_sync(alsa_sound_last_init);
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