From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f72.google.com (mail-io1-f72.google.com [209.85.166.72]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id BE85233CD1 for ; Fri, 9 Aug 2024 06:41:27 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.72 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723185689; cv=none; b=UUv2xXOtps8k/qPlnEaRnSibAs3EVpKzgeBaMvxp9rjCLnxinLwhuWvsf9EM2gO2NyU8j6B3pCevS/Xsx4YG0WL5PCpttLzhZhfJnOzJKW6JhoV7RHdpLyKtal8LjhhkrKesEiuNvr5E37MvQZzggmEGAeDJtVBAqx17USG/Ado= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1723185689; c=relaxed/simple; bh=kJA3plQSQr9uH4N6WlKoRr4QidKoAQuXrh/2pk5Q81s=; h=MIME-Version:Date:In-Reply-To:Message-ID:Subject:From:To: Content-Type; b=ZBX9VlhFsHsAicXPlEKrEypW/1I4XP/gUJo6obyWtPngkvE4kJLsswGo6CryZ6CnpLzXHmEZMJ5GCdkev3e5OECqNScBcShL59F9Tt1Kard7SUmDLTXfJS7WusfhAhsCSLYJZfBme4sNBfAPTKURdwkLmp6XRNGrhN1xscrpUzY= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; arc=none smtp.client-ip=209.85.166.72 Authentication-Results: smtp.subspace.kernel.org; dmarc=fail (p=none dis=none) header.from=syzkaller.appspotmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com Received: by mail-io1-f72.google.com with SMTP id ca18e2360f4ac-81f890b6fa6so217736739f.0 for ; Thu, 08 Aug 2024 23:41:27 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1723185687; x=1723790487; h=to:from:subject:message-id:in-reply-to:date:mime-version :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=1dD1FlwzCIFwLWJH1tvjbgVnancO5qNwycMKyLDRvic=; b=TyKwdzde7Co7IlJksAGCAPJ34Z8zRWKmkYl8v5IefjebtgxSzKuOuxjRfzM6zvngqG KWKDiqaZ0s2tqRBUyIjxHdTJTmS3+cC31T8SCd2jig5cINoHG0MdOEpDh/VS4XwGgqi0 KhU2Sn40JHlojBpvpwjYE5IX0aLLzPZ1cdwR/3LjdccRF4x62rdIg+dBmmUkXYFVQMeD gBKdlR0PhGU5EQk9QjKwkZqTiiixY/DgXtsR268O6jHKykhC+orDz8unfbMm5zPZkbFo WPyU+jnJrbzy6Aoz5Jy7uG4uFScJPlMXjHEwf7X2K3RTVeMrFHlDZl3aEbLa4rZyWycS 6orQ== X-Gm-Message-State: AOJu0Yx3BT3ow/24diJGQ+6TZaeR55xMX5nweg95ExVjOWgsm8hBduc3 cpdUpnS9/4xtYtlwO1Ejis2CGaFty9nHefzpYDQ3fHsPlm0LBQnuq7wovcI5TthDALB1lBTyDkg ihnbtA9WFkpf6TPYeHT9vAK3mbRKV6fEguPikAkik4pfPlfXf1qV8Yrw= X-Google-Smtp-Source: AGHT+IFs7eTIF2E/yAZz7up4djnw9Is7/7tNODMjIHifv1oOnOXONOGdcbaH6fDJu7Uru0sUiXoKJuOarXp5E+rSSnNH2phHNy5F Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Received: by 2002:a05:6638:3712:b0:4bd:4861:d7f8 with SMTP id 8926c6da1cb9f-4ca6edadbcdmr14388173.4.1723185686825; Thu, 08 Aug 2024 23:41:26 -0700 (PDT) Date: Thu, 08 Aug 2024 23:41:26 -0700 In-Reply-To: <0000000000007ec511061f00a7b2@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000bee0a2061f3a6ec9@google.com> Subject: Re: [syzbot] Re: [syzbot] [v9fs?] WARNING in v9fs_begin_writeback From: syzbot To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org. *** Subject: Re: [syzbot] [v9fs?] WARNING in v9fs_begin_writeback Author: lizhi.xu@windriver.com wait for writeback done before release inode #syz test: upstream c0ecd6388360 diff --git a/fs/9p/vfs_dir.c b/fs/9p/vfs_dir.c index e0d34e4e9076..ca7ea0d619aa 100644 --- a/fs/9p/vfs_dir.c +++ b/fs/9p/vfs_dir.c @@ -219,6 +219,14 @@ int v9fs_dir_release(struct inode *inode, struct file *filp) retval = filemap_fdatawrite(inode->i_mapping); spin_lock(&inode->i_lock); + if (test_bit(I_DIRTY, &inode->i_state)) { + spin_unlock(&inode->i_lock); + if (wait_on_bit_timeout(&inode->i_state, I_DIRTY, + TASK_UNINTERRUPTIBLE, HZ)) + return -EBUSY; + printk("del, ind: %p, ino: %lx, ino is dirty: %d, %s\n", inode, inode->i_ino, inode->i_state & I_DIRTY, __func__); + spin_lock(&inode->i_lock); + } hlist_del(&fid->ilist); spin_unlock(&inode->i_lock); put_err = p9_fid_put(fid);