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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5FE9CC25B08 for ; Wed, 17 Aug 2022 14:30:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240127AbiHQOak (ORCPT ); Wed, 17 Aug 2022 10:30:40 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54680 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240169AbiHQOa2 (ORCPT ); Wed, 17 Aug 2022 10:30:28 -0400 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id D41263ED45 for ; Wed, 17 Aug 2022 07:30:27 -0700 (PDT) Received: by mail-il1-f200.google.com with SMTP id k9-20020a056e021a8900b002e5bd940e96so5760457ilv.13 for ; Wed, 17 Aug 2022 07:30:27 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc; bh=lTgDtlo/hd6/742fSyPc108lfoTW7+XIunA920R7h9E=; b=7kzyWOsni8pBXtidgKDku/SeOuJKntZadjP4IdRc9uM6Rs6doAwMF2IUmPyJzd7h0C mGlGEKgMpqQS9PwdpGiTfXj9c5+sHvCe+fBx4pIQZxwGP+4aeg5DbgV+qbNUvPVutyvS /6ujLbrL2PyXdmQn6w95txeF1J9dEmLH2A/QGWqGAAW4wDsWW0rSqHmpcsMZtLHrE1lQ 3oIZpqhsDCn2YSEWX2T/NJzwQiVyNp1VZYZoLHenxNq+RJzIUzX2pLGKCWYTVPjkJq1g FioJ0ujZ7LGR7x8yn8vWmYWNHPPy0mC4Lls5ep41osuFM/ZckmryWYzRsvDbItiJXf4/ 45GQ== X-Gm-Message-State: ACgBeo2sXp9i+pFFmifDSamtSzTJmempR/sn79aBMMzb8Kq8XmfTJ8cJ bcBrpNMYPt2c5VFp5vLao2wXGFlVikxCyz5vH+5G4wW0k1em X-Google-Smtp-Source: AA6agR7vJmcunTZhXCeFgsalPO/ZV0rpzXR84fZT7IV1zlQjJLodqbW9FEFgGCBoSLrREVWBWAJTYo1T8x3B6AXCzK4R/VnSJpXx MIME-Version: 1.0 X-Received: by 2002:a02:6023:0:b0:346:ac9c:5ded with SMTP id i35-20020a026023000000b00346ac9c5dedmr3746106jac.245.1660746627208; Wed, 17 Aug 2022 07:30:27 -0700 (PDT) Date: Wed, 17 Aug 2022 07:30:27 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000c6e06605e670b459@google.com> Subject: [syzbot] KASAN: vmalloc-out-of-bounds Read in kvm_dev_ioctl From: syzbot To: kvm@vger.kernel.org, linux-kernel@vger.kernel.org, pbonzini@redhat.com, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 7ebfc85e2cd7 Merge tag 'net-6.0-rc1' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=10b66b6b080000 kernel config: https://syzkaller.appspot.com/x/.config?x=c15de4ee7650fb42 dashboard link: https://syzkaller.appspot.com/bug?extid=8d24abd02cd4eb911bbd compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+8d24abd02cd4eb911bbd@syzkaller.appspotmail.com ================================================================== BUG: KASAN: vmalloc-out-of-bounds in __list_add_valid+0x93/0xb0 lib/list_debug.c:27 Read of size 8 at addr ffffc90006b7a348 by task syz-executor.4/20901 CPU: 1 PID: 20901 Comm: syz-executor.4 Not tainted 5.19.0-syzkaller-13930-g7ebfc85e2cd7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:317 [inline] print_report.cold+0x59/0x6e9 mm/kasan/report.c:433 kasan_report+0xb1/0x1e0 mm/kasan/report.c:495 __list_add_valid+0x93/0xb0 lib/list_debug.c:27 __list_add include/linux/list.h:69 [inline] list_add include/linux/list.h:88 [inline] kvm_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:1219 [inline] kvm_dev_ioctl_create_vm arch/x86/kvm/../../../virt/kvm/kvm_main.c:4910 [inline] kvm_dev_ioctl+0xf44/0x1ce0 arch/x86/kvm/../../../virt/kvm/kvm_main.c:4957 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fb1fba89279 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb1fcc1e168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007fb1fbb9bf80 RCX: 00007fb1fba89279 RDX: 0000000000000000 RSI: 000000000000ae01 RDI: 0000000000000004 RBP: 00007fb1fbae3189 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffea48aadbf R14: 00007fb1fcc1e300 R15: 0000000000022000 Memory state around the buggy address: ffffc90006b7a200: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffffc90006b7a280: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 >ffffc90006b7a300: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ^ ffffc90006b7a380: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffffc90006b7a400: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ================================================================== --- This report is generated by a bot. 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