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=-5.4 required=3.0 tests=FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING, SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 025EAC2D0EA for ; Wed, 8 Apr 2020 07:48:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D18AB20747 for ; Wed, 8 Apr 2020 07:48:15 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726893AbgDHHsO (ORCPT ); Wed, 8 Apr 2020 03:48:14 -0400 Received: from mail-il1-f197.google.com ([209.85.166.197]:42057 "EHLO mail-il1-f197.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726652AbgDHHsO (ORCPT ); Wed, 8 Apr 2020 03:48:14 -0400 Received: by mail-il1-f197.google.com with SMTP id f68so5873988ilg.9 for ; Wed, 08 Apr 2020 00:48:14 -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=CGxHHWD1n3LkBxz2Gb3ke3O4d2pEApLZAEdHel6vwXM=; b=F9PPy/HslyX5cXUmIn10NRME9Sa/8eOgrpEYJdvgN5dd7+qpL5shu3Qtn8hwKVf+aT w2ac8pGHbWyOJQaItA2SMMon3zsR8P4eUfgTRrXOZAbXPKkuP5b4i71SIVYjJ/S0jpiU aKYHUNfg1nn4q1nOvcFbugagSOixQQVXBSHZJ++4YJyEkr3b3cphM41KIRvr7nNszyX8 VCqZQcN3qAayBjed1LdAPffFlc0YkbX9ruhhFYnlpXE34TXwM6kUEgh5Ib3Tw+9RNIBU tAXQdkc+UictOaaCajLGiiLqR8QH9ogZlCGZYKB/CTmqeROCc1QrwATtobqU80kx6W+a l8bA== X-Gm-Message-State: AGi0PuZQyPYOzfiHJM9k8oKxuor1dhppk89M3BqKUnd84vyy8Lenj+Ow 0dQ6ZrousgX5Wox/aSrEiddpMfrLcHNok0OmPOuiLIE+xy6D X-Google-Smtp-Source: APiQypISrfHjq2lbhi3NLHt0P0DqizOwunS4hKOYik7JU3Ql3OMr0otRPsi0xCqyk4eUr3SWdZZ/fsxw8iR71gIqgVZ1yZr+clMW MIME-Version: 1.0 X-Received: by 2002:a5d:87c6:: with SMTP id q6mr5717612ios.163.1586332093822; Wed, 08 Apr 2020 00:48:13 -0700 (PDT) Date: Wed, 08 Apr 2020 00:48:13 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f2bc9505a2c2b808@google.com> Subject: WARNING in af_alg_make_sg From: syzbot To: akpm@linux-foundation.org, bgeffon@google.com, davem@davemloft.net, herbert@gondor.apana.org.au, linux-crypto@vger.kernel.org, linux-kernel@vger.kernel.org, peterx@redhat.com, syzkaller-bugs@googlegroups.com, torvalds@linux-foundation.org Content-Type: text/plain; charset="UTF-8" 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: 763dede1 Merge tag 'for-linus-5.7-rc1' of git://git.kernel.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=12b919c7e00000 kernel config: https://syzkaller.appspot.com/x/.config?x=12205d036cec317f dashboard link: https://syzkaller.appspot.com/bug?extid=3be1a33f04dc782e9fd5 compiler: gcc (GCC) 9.0.0 20181231 (experimental) syz repro: https://syzkaller.appspot.com/x/repro.syz?x=142f3b8fe00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=159bd23fe00000 The bug was bisected to: commit 4426e945df588f2878affddf88a51259200f7e29 Author: Peter Xu Date: Thu Apr 2 04:08:49 2020 +0000 mm/gup: allow VM_FAULT_RETRY for multiple times bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1408ea9fe00000 final crash: https://syzkaller.appspot.com/x/report.txt?x=1608ea9fe00000 console output: https://syzkaller.appspot.com/x/log.txt?x=1208ea9fe00000 IMPORTANT: if you fix the bug, please add the following tag to the commit: Reported-by: syzbot+3be1a33f04dc782e9fd5@syzkaller.appspotmail.com Fixes: 4426e945df58 ("mm/gup: allow VM_FAULT_RETRY for multiple times") ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7094 at crypto/af_alg.c:404 af_alg_make_sg+0x399/0x400 crypto/af_alg.c:404 Kernel panic - not syncing: panic_on_warn set ... CPU: 1 PID: 7094 Comm: syz-executor037 Not tainted 5.6.0-syzkaller #0 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+0x188/0x20d lib/dump_stack.c:118 panic+0x2e3/0x75c kernel/panic.c:221 __warn.cold+0x2f/0x35 kernel/panic.c:582 report_bug+0x27b/0x2f0 lib/bug.c:195 fixup_bug arch/x86/kernel/traps.c:175 [inline] fixup_bug arch/x86/kernel/traps.c:170 [inline] do_error_trap+0x12b/0x220 arch/x86/kernel/traps.c:267 do_invalid_op+0x32/0x40 arch/x86/kernel/traps.c:286 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027 RIP: 0010:af_alg_make_sg+0x399/0x400 crypto/af_alg.c:404 Code: 5c 24 2b 31 ff 89 de e8 c5 b9 f8 fd 84 db 74 0e e8 8c b8 f8 fd 48 8b 04 24 48 89 44 24 70 e8 7e b8 f8 fd 0f 0b e8 77 b8 f8 fd <0f> 0b c7 44 24 4c ea ff ff ff e9 4b ff ff ff 48 89 df e8 40 6e 36 RSP: 0018:ffffc900018779a0 EFLAGS: 00010293 RAX: ffff8880a16b65c0 RBX: ffff8880a4141220 RCX: ffffffff837a763d RDX: 0000000000000000 RSI: ffffffff837a78f9 RDI: 0000000000000005 RBP: 000000001fef2254 R08: ffff8880a16b65c0 R09: ffffed10142d6cb9 R10: ffff8880a16b65c7 R11: ffffed10142d6cb8 R12: 0000000000000000 R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000 hash_sendmsg+0x45c/0xad0 crypto/algif_hash.c:94 sock_sendmsg_nosec net/socket.c:652 [inline] sock_sendmsg+0xcf/0x120 net/socket.c:672 ____sys_sendmsg+0x6bf/0x7e0 net/socket.c:2362 ___sys_sendmsg+0x100/0x170 net/socket.c:2416 __sys_sendmsg+0xec/0x1b0 net/socket.c:2449 do_syscall_64+0xf6/0x7d0 arch/x86/entry/common.c:295 entry_SYSCALL_64_after_hwframe+0x49/0xb3 RIP: 0033:0x446999 Code: e8 0c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 5b 07 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f1427fb4d98 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00000000006dbc28 RCX: 0000000000446999 RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000005 RBP: 00000000006dbc20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc2c R13: 0000000000000000 R14: 0000000000000000 R15: 0000000068736168 Kernel Offset: disabled Rebooting in 86400 seconds.. --- 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#status for how to communicate with syzbot. For information about bisection process see: https://goo.gl/tpsmEJ#bisection syzbot can test patches for this bug, for details see: https://goo.gl/tpsmEJ#testing-patches