From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-0.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by aws-us-west-2-korg-lkml-1.web.codeaurora.org (Postfix) with ESMTP id 61937C433EF for ; Wed, 13 Jun 2018 11:12:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 11E54208B2 for ; Wed, 13 Jun 2018 11:12:07 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 11E54208B2 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S935300AbeFMLME (ORCPT ); Wed, 13 Jun 2018 07:12:04 -0400 Received: from mail-it0-f69.google.com ([209.85.214.69]:37694 "EHLO mail-it0-f69.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754096AbeFMLMC (ORCPT ); Wed, 13 Jun 2018 07:12:02 -0400 Received: by mail-it0-f69.google.com with SMTP id p130-v6so2198929itp.2 for ; Wed, 13 Jun 2018 04:12:02 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:date:message-id:subject:from:to; bh=bOPoza3YRnJZvdAhs6F5uPfu1XIOap8R6P3S4vs8SWg=; b=i9e1euDVZnKcwicHO/qHd0B4XxqgC39w0bNPkMru2BvtkEGnKipNMOWq6y4QsEx/j0 6Cdjil7X0ExkplM7PWeMoJn9SE2kBJS5iuxV/pL/OUwXowTHiem0VpDs5NZcKPcoOj45 M1UbXBsyvc5sFbQYHbdLbAVDMt6O+5GgA/dIsXf/JJEO/YHk3gPSTUs3Zlm8x0IKcjRR v6kzwTfoSWDhvuNPs2unhEh99wkujG2lVjD7603gFaIVanxvmxLs2aRWKCj+jg+DAm1c MksG+5jUycpnLrC3ZJtICY6cdvd/6PCsRkO4byLZIsM7WuiO9W16iheR3YWc7wR5v37h k1+w== X-Gm-Message-State: APt69E2SrJwW3V8UFDwtSvkTe1cj35aJyesoo+i9g+eywn/vWRQbW1Op 2g74BAKDxn8XcuxrS4BOyxD++oa2Gxdguy6J5Z0UCx3uj9Mn X-Google-Smtp-Source: ADUXVKK9bdIiNQMyBtS0MUMGZh1Pcb8KIIxbdUbKams0jCM1jdqUNoICbn/Ks294QdqZ9qsrOafZGuQro9tDeqsn1W1f9S65q8Gj MIME-Version: 1.0 X-Received: by 2002:a6b:e506:: with SMTP id y6-v6mr1851924ioc.122.1528888322338; Wed, 13 Jun 2018 04:12:02 -0700 (PDT) Date: Wed, 13 Jun 2018 04:12:02 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000005abb37056e840d40@google.com> Subject: KASAN: slab-out-of-bounds Read in crypto_morus640_decrypt_chunk From: syzbot To: davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8"; format=flowed; delsp=yes Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following crash on: HEAD commit: f0dc7f9c6dd9 Merge git://git.kernel.org/pub/scm/linux/kern.. git tree: net-next console output: https://syzkaller.appspot.com/x/log.txt?x=17e6fb6f800000 kernel config: https://syzkaller.appspot.com/x/.config?x=fa9c20c48788d1c1 dashboard link: https://syzkaller.appspot.com/bug?extid=1fafa9c4cf42df33f716 compiler: gcc (GCC) 8.0.1 20180413 (experimental) Unfortunately, I don't have any reproducer for this crash yet. IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+1fafa9c4cf42df33f716@syzkaller.appspotmail.com ================================================================== BUG: KASAN: slab-out-of-bounds in crypto_morus640_load_a crypto/morus640.c:111 [inline] BUG: KASAN: slab-out-of-bounds in crypto_morus640_decrypt_chunk+0xcf8/0xd20 crypto/morus640.c:278 Read of size 4 at addr ffff8801d7611b08 by task syz-executor6/15764 CPU: 1 PID: 15764 Comm: syz-executor6 Not tainted 4.17.0+ #84 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1b9/0x294 lib/dump_stack.c:113 print_address_description+0x6c/0x20b mm/kasan/report.c:256 kasan_report_error mm/kasan/report.c:354 [inline] kasan_report.cold.7+0x242/0x2fe mm/kasan/report.c:412 __asan_report_load4_noabort+0x14/0x20 mm/kasan/report.c:432 crypto_morus640_load_a crypto/morus640.c:111 [inline] crypto_morus640_decrypt_chunk+0xcf8/0xd20 crypto/morus640.c:278 crypto_morus640_process_crypt.isra.12+0x153/0x230 crypto/morus640.c:376 crypto_morus640_crypt+0x42e/0x9f0 crypto/morus640.c:442 crypto_morus640_decrypt+0x23e/0x3d0 crypto/morus640.c:485 crypto_aead_decrypt include/crypto/aead.h:370 [inline] _aead_recvmsg crypto/algif_aead.c:315 [inline] aead_recvmsg+0x13cc/0x1ba0 crypto/algif_aead.c:334 sock_recvmsg_nosec net/socket.c:818 [inline] sock_recvmsg+0xd0/0x110 net/socket.c:825 ___sys_recvmsg+0x2b6/0x680 net/socket.c:2323 __sys_recvmsg+0x112/0x260 net/socket.c:2372 __do_sys_recvmsg net/socket.c:2382 [inline] __se_sys_recvmsg net/socket.c:2379 [inline] __x64_sys_recvmsg+0x78/0xb0 net/socket.c:2379 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe IPVS: set_ctl: invalid protocol: 103 127.0.0.1:20001 RIP: 0033:0x455b29 Code: 1d ba fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb b9 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f3f80c2cc68 EFLAGS: 00000246 ORIG_RAX: 000000000000002f RAX: ffffffffffffffda RBX: 00007f3f80c2d6d4 RCX: 0000000000455b29 RDX: 0000000000000000 RSI: 0000000020002840 RDI: 0000000000000014 RBP: 000000000072bea0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004c084a R14: 00000000004cffe8 R15: 0000000000000000 Allocated by task 15764: save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xc4/0xe0 mm/kasan/kasan.c:553 __do_kmalloc mm/slab.c:3718 [inline] __kmalloc+0x14e/0x760 mm/slab.c:3727 kmalloc include/linux/slab.h:518 [inline] kzalloc include/linux/slab.h:706 [inline] skcipher_next_slow crypto/skcipher.c:253 [inline] skcipher_walk_next+0x750/0x1850 crypto/skcipher.c:357 skcipher_walk_first+0x151/0x410 crypto/skcipher.c:442 skcipher_walk_aead_common+0x7f8/0xbc0 crypto/skcipher.c:539 skcipher_walk_aead_decrypt+0xc7/0x100 crypto/skcipher.c:572 crypto_morus640_process_crypt.isra.12+0x9c/0x230 crypto/morus640.c:370 crypto_morus640_crypt+0x42e/0x9f0 crypto/morus640.c:442 crypto_morus640_decrypt+0x23e/0x3d0 crypto/morus640.c:485 crypto_aead_decrypt include/crypto/aead.h:370 [inline] _aead_recvmsg crypto/algif_aead.c:315 [inline] aead_recvmsg+0x13cc/0x1ba0 crypto/algif_aead.c:334 sock_recvmsg_nosec net/socket.c:818 [inline] sock_recvmsg+0xd0/0x110 net/socket.c:825 ___sys_recvmsg+0x2b6/0x680 net/socket.c:2323 __sys_recvmsg+0x112/0x260 net/socket.c:2372 __do_sys_recvmsg net/socket.c:2382 [inline] __se_sys_recvmsg net/socket.c:2379 [inline] __x64_sys_recvmsg+0x78/0xb0 net/socket.c:2379 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 4575: save_stack+0x43/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] __kasan_slab_free+0x11a/0x170 mm/kasan/kasan.c:521 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528 __cache_free mm/slab.c:3498 [inline] kfree+0xd9/0x260 mm/slab.c:3813 kvfree+0x61/0x70 mm/util.c:442 __vunmap+0x326/0x460 mm/vmalloc.c:1529 vfree+0x68/0x100 mm/vmalloc.c:1593 copy_entries_to_user net/ipv6/netfilter/ip6_tables.c:885 [inline] get_entries net/ipv6/netfilter/ip6_tables.c:1043 [inline] do_ip6t_get_ctl+0xa52/0xc30 net/ipv6/netfilter/ip6_tables.c:1711 nf_sockopt net/netfilter/nf_sockopt.c:104 [inline] nf_getsockopt+0x80/0xe0 net/netfilter/nf_sockopt.c:122 ipv6_getsockopt+0x1d9/0x300 net/ipv6/ipv6_sockglue.c:1370 tcp_getsockopt+0x93/0xe0 net/ipv4/tcp.c:3534 sock_common_getsockopt+0x9a/0xe0 net/core/sock.c:3012 __sys_getsockopt+0x1a5/0x370 net/socket.c:1984 __do_sys_getsockopt net/socket.c:1995 [inline] __se_sys_getsockopt net/socket.c:1992 [inline] __x64_sys_getsockopt+0xbe/0x150 net/socket.c:1992 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff8801d7611b00 which belongs to the cache kmalloc-32 of size 32 The buggy address is located 8 bytes inside of 32-byte region [ffff8801d7611b00, ffff8801d7611b20) The buggy address belongs to the page: page:ffffea00075d8440 count:1 mapcount:0 mapping:ffff8801da8001c0 index:0xffff8801d7611fc1 flags: 0x2fffc0000000100(slab) raw: 02fffc0000000100 ffffea00075c94c8 ffffea00075d82c8 ffff8801da8001c0 raw: ffff8801d7611fc1 ffff8801d7611000 000000010000000b 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff8801d7611a00: fb fb fb fb fc fc fc fc 00 02 fc fc fc fc fc fc ffff8801d7611a80: 00 02 fc fc fc fc fc fc 00 02 fc fc fc fc fc fc > ffff8801d7611b00: 00 fc fc fc fc fc fc fc fb fb fb fb fc fc fc fc ^ ffff8801d7611b80: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ffff8801d7611c00: fb fb fb fb fc fc fc fc fb fb fb fb fc fc fc fc ================================================================== --- This bug is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@googlegroups.com. syzbot will keep track of this bug report. See: https://goo.gl/tpsmEJ#bug-status-tracking for how to communicate with syzbot.