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 00A7CC10F1B for ; Mon, 19 Dec 2022 09:05:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229699AbiLSJFu (ORCPT ); Mon, 19 Dec 2022 04:05:50 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:38366 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229794AbiLSJFr (ORCPT ); Mon, 19 Dec 2022 04:05:47 -0500 Received: from mail-io1-f71.google.com (mail-io1-f71.google.com [209.85.166.71]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4BA2B100B for ; Mon, 19 Dec 2022 01:05:46 -0800 (PST) Received: by mail-io1-f71.google.com with SMTP id r25-20020a6bfc19000000b006e002cb217fso3770339ioh.2 for ; Mon, 19 Dec 2022 01:05:46 -0800 (PST) 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:message-id:reply-to; bh=AWOajJEnSGvTS82I9sFGcxGqMpzhww1quh5l5HfVQMo=; b=B6uJ9vhzSBJeKVCg0NMlb/ch+xKQTUoxCGDBS3MxkRFBWMBsvtQ33nrI1UwZhM/1Xb UcYQumjuSGMoZQ9+OlGkFVUhBwt2HxX1RZ5Dnx9PutOgb2A2Rvc4Ei31usoQIMSe9iTE FwN/GgvVsQMMRYZ42EESTuaX9pwaU/Ee+F9wPQMTuShsSzPXLK+odlohs1482D65WDpq B8072KMb54eGHdAZMrfXAlSkJBNwL22pxoKX7bzt64T5BxKhvz3iPFQl9sE/j8YbZDYD ool5Gz7cbPsQR7bM6kt9K98UTgMc6CFW6THqMqJYtTfLLIQMi1Z/uhlHIWXc36rIJwiY 9Kcg== X-Gm-Message-State: AFqh2krXPVT1UukuEYbYx9KJnXzfUBvpY2oIjK/PScpvtFtFtgEBBRen pTneuTMsc15vQEY9HnhGh7QvvBHcA1J4blbVtF8U7urTiGlk X-Google-Smtp-Source: AMrXdXvMBZ6zcydBG77Del9/vlqq2KsNYogxJMaVE3ldzoO8dCp6RPqBBbfMO8Hb3rlDv2mHFAuCCjQP86FV3Xw2SYR+FzQB6G9P MIME-Version: 1.0 X-Received: by 2002:a05:6e02:f47:b0:308:86c1:9717 with SMTP id y7-20020a056e020f4700b0030886c19717mr860827ilj.8.1671440745677; Mon, 19 Dec 2022 01:05:45 -0800 (PST) Date: Mon, 19 Dec 2022 01:05:45 -0800 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000e8c98705f02a9f6d@google.com> Subject: [syzbot] general protection fault in detach_extent_buffer_page (3) From: syzbot To: clm@fb.com, dsterba@suse.com, josef@toxicpanda.com, linux-btrfs@vger.kernel.org, linux-kernel@vger.kernel.org, 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: e2ca6ba6ba01 Merge tag 'mm-stable-2022-12-13' of git://git.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=141d9ad0480000 kernel config: https://syzkaller.appspot.com/x/.config?x=ca14f57f6fb6faa7 dashboard link: https://syzkaller.appspot.com/bug?extid=0c9e903ba426fae1f88d 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+0c9e903ba426fae1f88d@syzkaller.appspotmail.com general protection fault, probably for non-canonical address 0xdffffc000000003d: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000001e8-0x00000000000001ef] CPU: 1 PID: 45 Comm: kcompactd0 Not tainted 6.1.0-syzkaller-09941-ge2ca6ba6ba01 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014 RIP: 0010:__lock_acquire+0xd83/0x56d0 kernel/locking/lockdep.c:4925 Code: 3d 0f 41 bf 01 00 00 00 0f 86 c8 00 00 00 89 05 93 56 3d 0f e9 bd 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 4e 31 00 00 49 81 3e 60 65 f6 8f 0f 84 4c f3 ff RSP: 0018:ffffc900008d74a8 EFLAGS: 00010002 RAX: dffffc0000000000 RBX: 1ffff9200011aec5 RCX: 0000000000000000 RDX: 000000000000003d RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: fffffbfff1ce6862 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88801562e100 R14: 00000000000001e8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88802c700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc081fa8000 CR3: 000000006a5b7000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire kernel/locking/lockdep.c:5668 [inline] lock_acquire+0x1e3/0x630 kernel/locking/lockdep.c:5633 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:350 [inline] detach_extent_buffer_page+0x6c7/0xb40 fs/btrfs/extent_io.c:4051 btrfs_release_extent_buffer_pages+0x12b/0x400 fs/btrfs/extent_io.c:4120 release_extent_buffer+0x242/0x2b0 fs/btrfs/extent_io.c:4618 try_release_extent_buffer+0x307/0x8d0 fs/btrfs/extent_io.c:5717 btree_release_folio+0xc2/0x100 fs/btrfs/disk-io.c:909 filemap_release_folio+0x13f/0x1b0 mm/filemap.c:3967 btree_migrate_folio+0xa2/0x100 fs/btrfs/disk-io.c:874 move_to_new_folio+0x17a/0x6e0 mm/migrate.c:958 __unmap_and_move mm/migrate.c:1122 [inline] unmap_and_move mm/migrate.c:1194 [inline] migrate_pages+0x1de8/0x3e10 mm/migrate.c:1477 compact_zone+0x1c74/0x39f0 mm/compaction.c:2413 kcompactd_do_work+0x2f7/0x7c0 mm/compaction.c:2851 kcompactd+0x8c3/0xdf0 mm/compaction.c:2953 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__lock_acquire+0xd83/0x56d0 kernel/locking/lockdep.c:4925 Code: 3d 0f 41 bf 01 00 00 00 0f 86 c8 00 00 00 89 05 93 56 3d 0f e9 bd 00 00 00 48 b8 00 00 00 00 00 fc ff df 4c 89 f2 48 c1 ea 03 <80> 3c 02 00 0f 85 4e 31 00 00 49 81 3e 60 65 f6 8f 0f 84 4c f3 ff RSP: 0018:ffffc900008d74a8 EFLAGS: 00010002 RAX: dffffc0000000000 RBX: 1ffff9200011aec5 RCX: 0000000000000000 RDX: 000000000000003d RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: fffffbfff1ce6862 R11: 0000000000000000 R12: 0000000000000000 R13: ffff88801562e100 R14: 00000000000001e8 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88802c700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc081fa8000 CR3: 000000006a5b7000 CR4: 0000000000150ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 0f 41 bf 01 00 00 00 cmovno 0x1(%rdi),%edi 7: 0f 86 c8 00 00 00 jbe 0xd5 d: 89 05 93 56 3d 0f mov %eax,0xf3d5693(%rip) # 0xf3d56a6 13: e9 bd 00 00 00 jmpq 0xd5 18: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1f: fc ff df 22: 4c 89 f2 mov %r14,%rdx 25: 48 c1 ea 03 shr $0x3,%rdx * 29: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2d: 0f 85 4e 31 00 00 jne 0x3181 33: 49 81 3e 60 65 f6 8f cmpq $0xffffffff8ff66560,(%r14) 3a: 0f .byte 0xf 3b: 84 4c f3 ff test %cl,-0x1(%rbx,%rsi,8) --- 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.