From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-io0-f194.google.com ([209.85.223.194]:34921 "EHLO mail-io0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751650AbcEJXTX (ORCPT ); Tue, 10 May 2016 19:19:23 -0400 Received: by mail-io0-f194.google.com with SMTP id i75so3030867ioa.2 for ; Tue, 10 May 2016 16:19:23 -0700 (PDT) Received: from zzz (c-24-7-245-123.hsd1.mn.comcast.net. [24.7.245.123]) by smtp.gmail.com with ESMTPSA id b67sm1943158iob.33.2016.05.10.16.19.22 for (version=TLSv1/SSLv3 cipher=OTHER); Tue, 10 May 2016 16:19:22 -0700 (PDT) Date: Tue, 10 May 2016 18:19:20 -0500 From: Eric Biggers To: linux-btrfs@vger.kernel.org Subject: WARNING at fs/btrfs/inode.c:9261 btrfs_destroy_inode() Message-ID: <20160510231920.GA938@zzz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: linux-btrfs-owner@vger.kernel.org List-ID: Hello, The following warning has been triggering for me since about v4.6-rc3: WARN_ON(BTRFS_I(inode)->csum_bytes); On one machine the warning has occurred 657 times since v4.6-rc5. On another it has occurred 3 times since v4.6-rc3. Both are now on v4.6-rc7, where I have still observed the warning. The warnings occur in groups, and do_unlinkat() and evict() are always in the call stack. Is this a known issue? Here is the first occurrence: Apr 17 10:31:19 zzz kernel: ------------[ cut here ]------------ Apr 17 10:31:19 zzz kernel: WARNING: CPU: 0 PID: 4092 at fs/btrfs/inode.c:9261 btrfs_destroy_inode+0x23c/0x2b0 Apr 17 10:31:19 zzz kernel: Modules linked in: fuse vhost_net vhost tun bridge stp llc ccm iptable_filter iptable_nat nf_conntrack_ipv4 Apr 17 10:31:19 zzz kernel: CPU: 0 PID: 4092 Comm: rm Tainted: G W 4.6.0-rc3 #178 Apr 17 10:31:19 zzz kernel: Hardware name: Dell Inc. Inspiron 15-7568/0M5YMV, BIOS 01.00.00 08/07/2015 Apr 17 10:31:19 zzz kernel: 0000000000000286 0000000031dfd09a ffff8801b9277dc0 ffffffff813320d8 Apr 17 10:31:19 zzz kernel: 0000000000000000 0000000000000000 ffff8801b9277e00 ffffffff81074221 Apr 17 10:31:19 zzz kernel: 0000242d85cec000 ffff88019408c9a8 ffff88019408c9a8 ffff880085cec000 Apr 17 10:31:19 zzz kernel: Call Trace: Apr 17 10:31:19 zzz kernel: [] dump_stack+0x4d/0x65 Apr 17 10:31:19 zzz kernel: [] __warn+0xc1/0xe0 Apr 17 10:31:19 zzz kernel: [] warn_slowpath_null+0x18/0x20 Apr 17 10:31:19 zzz kernel: [] btrfs_destroy_inode+0x23c/0x2b0 Apr 17 10:31:19 zzz kernel: [] destroy_inode+0x36/0x60 Apr 17 10:31:19 zzz kernel: [] evict+0x124/0x180 Apr 17 10:31:19 zzz kernel: [] iput+0x148/0x1d0 Apr 17 10:31:19 zzz kernel: [] do_unlinkat+0x194/0x2b0 Apr 17 10:31:19 zzz kernel: [] SyS_unlinkat+0x16/0x30 Apr 17 10:31:19 zzz kernel: [] entry_SYSCALL_64_fastpath+0x13/0x8f Apr 17 10:31:19 zzz kernel: ---[ end trace 87f6a0e10f4df484 ]---