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 11AD7C433F5 for ; Sat, 1 Oct 2022 14:25:50 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229572AbiJAOZr (ORCPT ); Sat, 1 Oct 2022 10:25:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58792 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229544AbiJAOZl (ORCPT ); Sat, 1 Oct 2022 10:25:41 -0400 Received: from mail-il1-f198.google.com (mail-il1-f198.google.com [209.85.166.198]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 82F704315A for ; Sat, 1 Oct 2022 07:25:40 -0700 (PDT) Received: by mail-il1-f198.google.com with SMTP id f4-20020a056e020b4400b002f6681cca5bso5496119ilu.14 for ; Sat, 01 Oct 2022 07:25:40 -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:subject:date; bh=LUy/tjvgRCWhk1HECUhsa9oaVDHitFE+5z0QHJIJrDk=; b=Nd9eqeHz4DFpN7qOQ4kXQ6wJZLPy6eXJZQ5cAsavvFEUudNlw7k7/j8Kt8fUV1JhSq AQ9tgGvlziHPXcdP2M9vRS/6Vb11OL/B5VrUJofcIZkBXBXTxMKcmD7K3ywfnK7slsXe kcx4/XXjBJZwPKpMjfQqgW7bWb3kqsyu8ARhHCM8y7yGhSUscoaEzAmG/8kGohwzp0KG zc6Hb36CS61GdYx3J8+GM46KdQOSndh4yH7XtfqTdc3ggw4Q8zMU3fnBT3s2Jh3Jaci4 yxgzESS4hIMsar/ofV9s+MDVDJUqLv5mTM5pZNDE1hOsLoUeDryHdy9zreht32N/FvRH UOAQ== X-Gm-Message-State: ACrzQf3Dco2HtCXyuJSmsTVQL2Qa5ZYt8JUAKL+HMG+h94cUZtWCGBgf didMtQFxjTD8wVwewljIQubid9AsZNUQyq4VYkkiFhFjunte X-Google-Smtp-Source: AMsMyM6QKDLIC0PEuC4WQgqNd8jC5wM3xSN89nX9Vre8+QjKAjWbAv3v8+bW8779T+Td2OpQiO7PwTbGNPFGt25H6giu/pZqPCGM MIME-Version: 1.0 X-Received: by 2002:a05:6e02:16ce:b0:2f9:253c:d3f3 with SMTP id 14-20020a056e0216ce00b002f9253cd3f3mr6215809ilx.56.1664634339957; Sat, 01 Oct 2022 07:25:39 -0700 (PDT) Date: Sat, 01 Oct 2022 07:25:39 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000839ff805e9f9e286@google.com> Subject: [syzbot] general protection fault in do_xmote From: syzbot To: agruenba@redhat.com, cluster-devel@redhat.com, linux-kernel@vger.kernel.org, rpeterso@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: c3e0e1e23c70 Merge tag 'irq_urgent_for_v6.0' of git://git... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=11664a70880000 kernel config: https://syzkaller.appspot.com/x/.config?x=a1992c90769e07 dashboard link: https://syzkaller.appspot.com/bug?extid=ececff266234ba40fe13 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+ececff266234ba40fe13@syzkaller.appspotmail.com general protection fault, probably for non-canonical address 0xdffffc0000000097: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000004b8-0x00000000000004bf] CPU: 2 PID: 70 Comm: kworker/2:1H Not tainted 6.0.0-rc7-syzkaller-00081-gc3e0e1e23c70 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 Workqueue: glock_workqueue glock_work_func RIP: 0010:is_system_glock fs/gfs2/glock.c:720 [inline] RIP: 0010:do_xmote+0x492/0xc40 fs/gfs2/glock.c:828 Code: 03 80 3c 02 00 0f 85 2f 07 00 00 4d 8b ad 18 07 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d bd b8 04 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ed 06 00 00 49 3b ad b8 04 00 00 0f 84 77 05 00 RSP: 0018:ffffc90000aa7c50 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff888027624000 RCX: 0000000000000000 RDX: 0000000000000097 RSI: ffffffff8381e370 RDI: 00000000000004b8 RBP: ffff888074ceea90 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888074ceeaf8 R15: ffff888074ceeab0 FS: 0000000000000000(0000) GS:ffff88802ca00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000990140 CR3: 0000000076461000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: run_queue+0x3cf/0x660 fs/gfs2/glock.c:893 glock_work_func+0xbe/0x3a0 fs/gfs2/glock.c:1059 process_one_work+0x991/0x1610 kernel/workqueue.c:2289 worker_thread+0x665/0x1080 kernel/workqueue.c:2436 kthread+0x2e4/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:is_system_glock fs/gfs2/glock.c:720 [inline] RIP: 0010:do_xmote+0x492/0xc40 fs/gfs2/glock.c:828 Code: 03 80 3c 02 00 0f 85 2f 07 00 00 4d 8b ad 18 07 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d bd b8 04 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ed 06 00 00 49 3b ad b8 04 00 00 0f 84 77 05 00 RSP: 0018:ffffc90000aa7c50 EFLAGS: 00010202 RAX: dffffc0000000000 RBX: ffff888027624000 RCX: 0000000000000000 RDX: 0000000000000097 RSI: ffffffff8381e370 RDI: 00000000000004b8 RBP: ffff888074ceea90 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: ffff888074ceeaf8 R15: ffff888074ceeab0 FS: 0000000000000000(0000) GS:ffff88802ca00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000990140 CR3: 0000000076461000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) 4: 0f 85 2f 07 00 00 jne 0x739 a: 4d 8b ad 18 07 00 00 mov 0x718(%r13),%r13 11: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 18: fc ff df 1b: 49 8d bd b8 04 00 00 lea 0x4b8(%r13),%rdi 22: 48 89 fa mov %rdi,%rdx 25: 48 c1 ea 03 shr $0x3,%rdx * 29: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2d: 0f 85 ed 06 00 00 jne 0x720 33: 49 3b ad b8 04 00 00 cmp 0x4b8(%r13),%rbp 3a: 0f .byte 0xf 3b: 84 77 05 test %dh,0x5(%rdi) --- This report 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 issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.