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 0A4F2C7618E for ; Mon, 24 Apr 2023 07:21:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230454AbjDXHVM (ORCPT ); Mon, 24 Apr 2023 03:21:12 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43918 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230515AbjDXHVH (ORCPT ); Mon, 24 Apr 2023 03:21:07 -0400 Received: from mail-il1-f208.google.com (mail-il1-f208.google.com [209.85.166.208]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 581F335AF for ; Mon, 24 Apr 2023 00:20:47 -0700 (PDT) Received: by mail-il1-f208.google.com with SMTP id e9e14a558f8ab-32afe238257so29550085ab.3 for ; Mon, 24 Apr 2023 00:20:47 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1682320846; x=1684912846; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=641X8TIeBPrHbjUBnznHK1cRl0WGKLF1lPeAjBl/3gE=; b=Ec5xgKd/nHy59RDwUIWwIzNWtxrg6S2k7hvbAK2etYg1S08ZPcU6Jhuhox4ZbY9D9n PA/LIEvb1CqF66skDI0fCmVLXnX386s0PydtPxO6IfZxaLVM74XGoZK25/s+7MteQch+ 0phbEuis/nrrnm2KW83o2SByB25RcLYHxX5QxAgvmer6yfXlPi1nB8pFmafnXURdL1iw t+1yu8U/4HB9SCtuKKKY/vgCl0UW+8lWTGpyGYNzjHG68m9kGIHgWAx3wKVyp+12wtMI nUwR/bTx5mTQIj7LFYBeQpFEXfqL7fm9E/Bp4z0PFo8ZKai9GWDzUJAZAtP6UWledI7x /8nQ== X-Gm-Message-State: AAQBX9ebK+ady2jV/O51tuAoQBQ2eu+/Y34pRz/sA0it38/jaFJyx7nh D+v7FHaGNoesg0N1P/Olhq3b3zVXDv/Q7W+XzHfoe0XMjWej X-Google-Smtp-Source: AKy350ZEnx3Zx4Cj+mbDrjnj+JoW8mp9J0S7zQYAYKCC1TsC1EbxfeOlUwMXe29q77jAGUzC6IVnZ2n7ccHXt97HFizlWxzfX+rR MIME-Version: 1.0 X-Received: by 2002:a02:95c2:0:b0:40f:8b6d:c549 with SMTP id b60-20020a0295c2000000b0040f8b6dc549mr4114436jai.2.1682320846514; Mon, 24 Apr 2023 00:20:46 -0700 (PDT) Date: Mon, 24 Apr 2023 00:20:46 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000007470fe05fa0fd8ba@google.com> Subject: [syzbot] [block?] KCSAN: data-race in __filemap_add_folio / invalidate_bdev (3) From: syzbot To: axboe@kernel.dk, linux-block@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-block@vger.kernel.org Hello, syzbot found the following issue on: HEAD commit: 3e7bb4f24617 Merge tag '6.3-rc6-smb311-client-negcontext-f.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=13c2e6ebc80000 kernel config: https://syzkaller.appspot.com/x/.config?x=710057cbb8def08c dashboard link: https://syzkaller.appspot.com/bug?extid=8a416e3cb063d4787b0f compiler: Debian clang version 15.0.7, 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/d1f21f86a5e7/disk-3e7bb4f2.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/5769a034d50c/vmlinux-3e7bb4f2.xz kernel image: https://storage.googleapis.com/syzbot-assets/82288ce4b761/bzImage-3e7bb4f2.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+8a416e3cb063d4787b0f@syzkaller.appspotmail.com ================================================================== BUG: KCSAN: data-race in __filemap_add_folio / invalidate_bdev read-write to 0xffff8881023fec48 of 8 bytes by task 5672 on cpu 1: __filemap_add_folio+0x38c/0x720 mm/filemap.c:904 filemap_add_folio+0x6f/0x150 mm/filemap.c:939 filemap_create_folio mm/filemap.c:2545 [inline] filemap_get_pages+0x5d2/0xea0 mm/filemap.c:2605 filemap_read+0x223/0x680 mm/filemap.c:2693 blkdev_read_iter+0x2ca/0x370 block/fops.c:606 call_read_iter include/linux/fs.h:1845 [inline] new_sync_read fs/read_write.c:389 [inline] vfs_read+0x39a/0x560 fs/read_write.c:470 ksys_read+0xeb/0x1a0 fs/read_write.c:613 __do_sys_read fs/read_write.c:623 [inline] __se_sys_read fs/read_write.c:621 [inline] __x64_sys_read+0x42/0x50 fs/read_write.c:621 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffff8881023fec48 of 8 bytes by task 3141 on cpu 0: invalidate_bdev+0x35/0x80 block/bdev.c:84 bdev_disk_changed+0x102/0xbb0 block/partitions/core.c:668 __loop_clr_fd+0x2b9/0x3b0 drivers/block/loop.c:1189 loop_clr_fd drivers/block/loop.c:1257 [inline] lo_ioctl+0xe9e/0x12f0 drivers/block/loop.c:1563 blkdev_ioctl+0x3a0/0x490 block/ioctl.c:615 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl+0xc9/0x140 fs/ioctl.c:856 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x0000000000000000 -> 0x0000000000000001 Reported by Kernel Concurrency Sanitizer on: CPU: 0 PID: 3141 Comm: syz-executor.2 Not tainted 6.3.0-rc6-syzkaller-00188-g3e7bb4f24617 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023 ================================================================== --- This report is generated by a bot. 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