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 14CFFC6FA8E for ; Tue, 27 Sep 2022 11:46:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231994AbiI0LqC (ORCPT ); Tue, 27 Sep 2022 07:46:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57120 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231787AbiI0Lp6 (ORCPT ); Tue, 27 Sep 2022 07:45:58 -0400 Received: from mail-il1-f197.google.com (mail-il1-f197.google.com [209.85.166.197]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4DA3F96FC1 for ; Tue, 27 Sep 2022 04:45:57 -0700 (PDT) Received: by mail-il1-f197.google.com with SMTP id h9-20020a056e021b8900b002f19c2a1836so7347021ili.23 for ; Tue, 27 Sep 2022 04:45:57 -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=Y2eyFs2gf59OAWxQZbFbHTprkTJOtZrJl7Ob4nZ0PJ8=; b=MHE86qKyuStVxShAU7eje4FqBnAP4PS4jmHy3oI1hptarYpXfbvNrrSd5ow8GOfYW5 m4QNeLBdH25zyM6hvDgFEWGTIoMBSYeyHR9+6CZjYSV+dj3+c7x9jTUItzH+ELGE//0t 3vMB4FGwyBILT7qhpqRwgXuCD5psdC2wJB0d7RbVtivE6UIrcRelTqmTrd+Z6PKR6Ug3 7qj0qc1JUpbK5rmsixqsxJH5Xrw6ehThD64kGMWgPDtRSQd3PPvLGt1Zxy43oAPSYnli JhTJl/Zqeibn6wLaHj4eBwZVIPkyEJqxKmepTk1jWlK7V88U5aqywOu+ZgrKyHzLVYEj 5GSA== X-Gm-Message-State: ACrzQf1i3rDSGT5+it5l+dhkTAe8Ua7kdHyXLWIlpnzSfcNwGF98Iiw4 I1kfBbqj3lmZBn96hX7Y+AqKmr2XiGo9JhJMsZs2vTFNFGhq X-Google-Smtp-Source: AMsMyM79r4WB+EuZiuqGtiyp5m2far53bxUFnPfjt/+PkWFbQhB/zFP5g/ea3tZDsRq/7jEqr2kBKBPQIdSOqakEX68NQpmxAIMy MIME-Version: 1.0 X-Received: by 2002:a92:cdae:0:b0:2f5:8aea:654d with SMTP id g14-20020a92cdae000000b002f58aea654dmr12637038ild.135.1664279156726; Tue, 27 Sep 2022 04:45:56 -0700 (PDT) Date: Tue, 27 Sep 2022 04:45:56 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000f1a26f05e9a72f57@google.com> Subject: [syzbot] WARNING in brelse From: syzbot To: linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk 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: f76349cf4145 Linux 6.0-rc7 git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=135e956c880000 kernel config: https://syzkaller.appspot.com/x/.config?x=ba0d23aa7e1ffaf5 dashboard link: https://syzkaller.appspot.com/bug?extid=2a0fbd1cb355de983130 compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1702ee9c880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15ee7d40880000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+2a0fbd1cb355de983130@syzkaller.appspotmail.com ------------[ cut here ]------------ VFS: brelse: Trying to free free buffer WARNING: CPU: 1 PID: 3609 at fs/buffer.c:1145 __brelse fs/buffer.c:1145 [inline] WARNING: CPU: 1 PID: 3609 at fs/buffer.c:1145 brelse+0x78/0xa0 include/linux/buffer_head.h:327 Modules linked in: CPU: 1 PID: 3609 Comm: udevd Not tainted 6.0.0-rc7-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 RIP: 0010:__brelse fs/buffer.c:1145 [inline] RIP: 0010:brelse+0x78/0xa0 include/linux/buffer_head.h:327 Code: df be 04 00 00 00 e8 b7 18 e1 ff f0 ff 0b eb 1c e8 8d 2a 8e ff eb 15 e8 86 2a 8e ff 48 c7 c7 a0 99 9d 8a 31 c0 e8 58 b7 56 ff <0f> 0b 5b 5d c3 89 d9 80 e1 07 80 c1 03 38 c1 7c af 48 89 df e8 bf RSP: 0018:ffffc90003a5fac8 EFLAGS: 00010046 RAX: 78e8d475b9f8e400 RBX: ffff888073d6bee0 RCX: ffff88801c409d80 RDX: 0000000000000000 RSI: 0000000080000002 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffffffff816bd40d R09: ffffed1017364f14 R10: ffffed1017364f14 R11: 1ffff11017364f13 R12: ffff8880b9b3acc0 R13: 0000000000000002 R14: ffff8880b9b35cf8 R15: dffffc0000000000 FS: 00007f6829c96840(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f23cc13e0a8 CR3: 000000001e07f000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __invalidate_bh_lrus+0x37/0x3c0 fs/buffer.c:1391 invalidate_bh_lru+0x66/0xb0 fs/buffer.c:1404 smp_call_function_many_cond+0xe88/0x16a0 kernel/smp.c:979 on_each_cpu_cond_mask+0x3b/0x80 kernel/smp.c:1154 kill_bdev block/bdev.c:74 [inline] blkdev_flush_mapping+0x149/0x2c0 block/bdev.c:661 blkdev_put_whole block/bdev.c:692 [inline] blkdev_put+0x4a5/0x730 block/bdev.c:952 blkdev_close+0x55/0x80 block/fops.c:499 __fput+0x3b9/0x820 fs/file_table.c:320 task_work_run+0x146/0x1c0 kernel/task_work.c:177 resume_user_mode_work include/linux/resume_user_mode.h:49 [inline] exit_to_user_mode_loop+0x124/0x150 kernel/entry/common.c:169 exit_to_user_mode_prepare+0xb2/0x140 kernel/entry/common.c:201 __syscall_exit_to_user_mode_work kernel/entry/common.c:283 [inline] syscall_exit_to_user_mode+0x26/0x60 kernel/entry/common.c:294 do_syscall_64+0x49/0xb0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f6829925fc3 Code: 48 ff ff ff b8 ff ff ff ff e9 3e ff ff ff 66 0f 1f 84 00 00 00 00 00 64 8b 04 25 18 00 00 00 85 c0 75 14 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 45 c3 0f 1f 40 00 48 83 ec 18 89 7c 24 0c e8 RSP: 002b:00007ffd3b4cbbd8 EFLAGS: 00000246 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 00007f6829c966a8 RCX: 00007f6829925fc3 RDX: 000000000000001c RSI: 00007ffd3b4cb3d8 RDI: 0000000000000008 RBP: 000055da4dfde0b0 R08: 0000000000000007 R09: 000055da4dfefc00 R10: 00007f68299b4fc0 R11: 0000000000000246 R12: 0000000000000002 R13: 000055da4dfd8740 R14: 0000000000000008 R15: 000055da4dfb5910 --- 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. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches