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From devnull@lkml.org Wed May 29 03:01:24 2024 >From mailfetcher Sat Jan 14 12:40:43 2023 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on pi4 X-Spam-Level: X-Spam-Status: No, score=0.4 required=5.0 tests=DMARC_NONE,FROM_LOCAL_HEX, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI, RCVD_IN_ZEN_BLOCKED_OPENDNS,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.6 Authentication-Results: pi4.bmw12.nl; dmarc=none (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: pi4.bmw12.nl; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=2620:137:e000::1:20; helo=out1.vger.email; envelope-from=linux-kernel-owner@vger.kernel.org; receiver=) Received: from secure.jasper.es [188.166.10.231] by 1dc7d414a5be with IMAP (fetchmail-6.3.26) for (single-drop); Sat, 14 Jan 2023 12:40:43 +0100 (CET) Received: from out1.vger.email (out1.vger.email [IPv6:2620:137:e000::1:20]) by pi4.bmw12.nl (Postfix) with ESMTP id 172F23F051 for ; Sat, 14 Jan 2023 12:40:41 +0100 (CET) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229874AbjANLkj convert rfc822-to-8bit (ORCPT ); Sat, 14 Jan 2023 06:40:39 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54916 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229850AbjANLkh (ORCPT ); Sat, 14 Jan 2023 06 Received: from mail-il1-f200.google.com (mail-il1-f200.google.com [209.85.166.200]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 04441769F for ; Sat, 14 Jan 2023 03:40:36 -0800 (PST) Received: by mail-il1-f200.google.com with SMTP id r6-20020a92cd86000000b00304b2d1c2d7so17901525ilb.11 for ; Sat, 14 Jan 2023 03:40:35 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=content-transfer-encoding:to:from:subject:message-id:date :mime-version:x-gm-message-state:from:to:cc:subject:date:message-id :reply-to; bh=H/VwMa/iyZSU X-Gm-Message-State: AFqh2kooBT8ZQUPO7+daytcr+jorY481F6IL3Fj92xRdRv6oX0Q1DWlK yejfkfKy9VY5O/x+wihKSMzPed+WfgPO3TGOiHwH/KgfvQCh X-Google-Smtp-Source: AMrXdXsqCQGzg4cbs75CE/Yhqh4wx0vdkY5rZboIXcI1Q+ha0T9Rfm52b4EhqxcRbsp18UTez3lg9vOUd52lQaSEdPwdYLyZyYaN Mime-Version: 1.0 X-Received: by 2002:a02:a795:0:b0:39e:9686:45bf with SMTP id e21-20020a02a795000000b0039e968645bfmr1458255jaj.44.1673696434939; Sat, 14 Jan 2023 03:40:34 -0800 (PST) Date: Sat, 14 Jan 2023 03:40:34 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-Id: <000000000000776d0d05f237d1ad@google.com> Subject: [syzbot] BUG: unable to handle kernel paging request in ovl_copy_xattr From: syzbot To: linux-kernel@vger.kernel.org, linux-unionfs@vger.kernel.org, miklos@szeredi.hu, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Precedence: bulk List-Id: X-Mailing-List: linux-kernel@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 97ec4d559d93 Merge tag 'block-6.2-2023-01-13' of git://git.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=159bfc7e480000 kernel config: https://syzkaller.appspot.com/x/.config?x=ebc110f9741920ed dashboard link: https://syzkaller.appspot.com/bug?extid=d63643338a33351b6ade compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/46f8c907cf5f/disk-97ec4d55.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/df0994e6fa24/vmlinux-97ec4d55.xz kernel image: https://storage.googleapis.com/syzbot-assets/59f096ab07dd/bzImage-97ec4d55.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d63643338a33351b6ade@syzkaller.appspotmail.com REISERFS warning (device loop1): super-6502 reiserfs_getopt: unknown mount option "��<<�G4��mR����u����0��w�2���������" BUG: unable to handle page fault for address: fffffffffff8d2a5 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD d08f067 P4D d08f067 PUD d091067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 7774 Comm: syz-executor.1 Not tainted 6.2.0-rc3-syzkaller-00349-g97ec4d559d93 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:ovl_copy_xattr+0xdb/0xab0 fs/overlayfs/copy_up.c:85 Code: 90 fe e9 52 09 00 00 49 8d 5f 68 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 b5 df e5 fe <48> 8b 1b 48 83 c3 02 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc RSP: 0018:ffffc90003567450 EFLAGS: 00010246 RAX: 1fffffffffff1a54 RBX: fffffffffff8d2a5 RCX: dffffc0000000000 RDX: ffff88802bc6d7c0 RSI: 0000000000000008 RDI: 0000000000000000 RBP: ffff888042f508d0 R08: ffffffff82fba5a9 R09: ffffed10085a80a0 R10: ffffed10085a80a0 R11: 1ffff110085a809f R12: ffff8880440ba000 R13: 0000000000000000 R14: 1ffff920006acec7 R15: fffffffffff8d23d FS: 00007f47e45f2700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffffffff8d2a5 CR3: 0000000049bce000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ovl_copy_up_metadata+0x1c1/0xb80 fs/overlayfs/copy_up.c:616 ovl_copy_up_workdir fs/overlayfs/copy_up.c:733 [inline] ovl_do_copy_up fs/overlayfs/copy_up.c:879 [inline] ovl_copy_up_one fs/overlayfs/copy_up.c:1045 [inline] ovl_copy_up_flags+0x166b/0x1f10 fs/overlayfs/copy_up.c:1091 ovl_nlink_start+0x20c/0x580 fs/overlayfs/util.c:908 ovl_do_remove+0x218/0x800 fs/overlayfs/dir.c:903 vfs_unlink+0x357/0x5f0 fs/namei.c:4252 do_unlinkat+0x46f/0x930 fs/namei.c:4320 __do_sys_unlink fs/namei.c:4368 [inline] __se_sys_unlink fs/namei.c:4366 [inline] __x64_sys_unlink+0x45/0x50 fs/namei.c:4366 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f47e388c0c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f47e45f2168 EFLAGS: 00000246 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 00007f47e39abf80 RCX: 00007f47e388c0c9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000100 RBP: 00007f47e38e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd801926cf R14: 00007f47e45f2300 R15: 0000000000022000 Modules linked in: CR2: fffffffffff8d2a5 ---[ end trace 0000000000000000 ]--- RIP: 0010:ovl_copy_xattr+0xdb/0xab0 fs/overlayfs/copy_up.c:85 Code: 90 fe e9 52 09 00 00 49 8d 5f 68 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 b5 df e5 fe <48> 8b 1b 48 83 c3 02 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc RSP: 0018:ffffc90003567450 EFLAGS: 00010246 RAX: 1fffffffffff1a54 RBX: fffffffffff8d2a5 RCX: dffffc0000000000 RDX: ffff88802bc6d7c0 RSI: 0000000000000008 RDI: 0000000000000000 RBP: ffff888042f508d0 R08: ffffffff82fba5a9 R09: ffffed10085a80a0 R10: ffffed10085a80a0 R11: 1ffff110085a809f R12: ffff8880440ba000 R13: 0000000000000000 R14: 1ffff920006acec7 R15: fffffffffff8d23d FS: 00007f47e45f2700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffffffff8d2a5 CR3: 0000000049bce000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: e9 52 09 00 00 jmpq 0x957 5: 49 8d 5f 68 lea 0x68(%r15),%rbx 9: 48 89 d8 mov %rbx,%rax c: 48 c1 e8 03 shr $0x3,%rax 10: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 17: fc ff df 1a: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) 1e: 74 08 je 0x28 20: 48 89 df mov %rbx,%rdi 23: e8 b5 df e5 fe callq 0xfee5dfdd * 28: 48 8b 1b mov (%rbx),%rbx <-- trapping instruction 2b: 48 83 c3 02 add $0x2,%rbx 2f: 48 89 d8 mov %rbx,%rax 32: 48 c1 e8 03 shr $0x3,%rax 36: 48 rex.W 37: b9 00 00 00 00 mov $0x0,%ecx 3c: 00 fc add %bh,%ah --- This report is generated by a bot. 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