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 E548CC4167B for ; Thu, 30 Nov 2023 07:28:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1344729AbjK3H2F (ORCPT ); Thu, 30 Nov 2023 02:28:05 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:57572 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231706AbjK3H2E (ORCPT ); Thu, 30 Nov 2023 02:28:04 -0500 Received: from mail-pj1-f70.google.com (mail-pj1-f70.google.com [209.85.216.70]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 96C21B9 for ; Wed, 29 Nov 2023 23:28:10 -0800 (PST) Received: by mail-pj1-f70.google.com with SMTP id 98e67ed59e1d1-28568b43a46so765011a91.0 for ; Wed, 29 Nov 2023 23:28:10 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1701329290; x=1701934090; 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=ixYvf/J8abI64uMWMZeI/HJ7Oi+NPdZy2LXBXb3PpQE=; b=N044Ix3iRNzzOOBA3w9G+XjavCNjaM14RVkPvdqaCkji04A7p2YxY54OgTszMkEYRr 5QtW/Pa8vBB49bHruhMV99Ijcg0NUd/i88lk9LS04JKbKUUMc+GkO/4jjzM1TBS48jY0 ap1yhibG/UeWaJZu5khCi8FK3ga+XbmK461niAXZSyNgKNVAQjuOu/anT1rUtFb2BL5j GWLCLcfUDhgQgtzAUsV/9InWDhZ/yvqk6j/PKlv+5o9gs/KzUpE9JlXDywXOkkV046jv aqM4C9ZI81PINpCGy0HQjQaGlI9ZJ7JQPQH0th0bhgBMxJOVZcafiOv7w6haJG+2IIfj 3KbA== X-Gm-Message-State: AOJu0Yw28ri1O+OW8uJcXSZjUPGxd8lfkgZQyv9Uod4+JTtRoSeC4kKU gSZg3hjlqfFkwJb46jvJEHR5KvMbEaopRGqD2jryOOtTxscF1S0= X-Google-Smtp-Source: AGHT+IFQH8VR6O1jPWhQd7fk4IZdLJk8GzrYzS8MBhw467AZy5fl4Yh1BK+XOYNGM35QqVJy2A2npqJORHaow49PsyXEAQ290lTb MIME-Version: 1.0 X-Received: by 2002:a17:903:182:b0:1d0:758:488e with SMTP id z2-20020a170903018200b001d00758488emr1555907plg.13.1701329290211; Wed, 29 Nov 2023 23:28:10 -0800 (PST) Date: Wed, 29 Nov 2023 23:28:10 -0800 In-Reply-To: <000000000000db858c05f06f30b0@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000fd370a060b59978b@google.com> Subject: Re: [syzbot] task hung in exfat_write_inode From: syzbot To: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org For archival purposes, forwarding an incoming command email to linux-kernel@vger.kernel.org. *** Subject: task hung in exfat_write_inode Author: lizhi.xu@windriver.com #syz test https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git f9ff5644bcc0 diff --git a/fs/exfat/file.c b/fs/exfat/file.c index bfdfafe00993..a3ace4fc555c 100644 --- a/fs/exfat/file.c +++ b/fs/exfat/file.c @@ -116,6 +116,7 @@ int __exfat_truncate(struct inode *inode) exfat_chain_set(&clu, ei->start_clu, num_clusters_phys, ei->flags); + mutex_unlock(&sbi->s_lock); if (i_size_read(inode) > 0) { /* * Truncate FAT chain num_clusters after the first cluster @@ -134,8 +135,10 @@ int __exfat_truncate(struct inode *inode) } else { while (num_clusters > 0) { last_clu = clu.dir; + mutex_lock(&sbi->s_lock); if (exfat_get_next_cluster(sb, &(clu.dir))) return -EIO; + mutex_unlock(&sbi->s_lock); num_clusters--; clu.size--; @@ -160,6 +163,7 @@ int __exfat_truncate(struct inode *inode) * __exfat_write_inode() is called for directory entry, bitmap * and FAT to be written in a same writeback. */ + mutex_unlock(&sbi->s_lock); if (__exfat_write_inode(inode, inode_needs_sync(inode))) return -EIO;