From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752714AbcERLcq (ORCPT ); Wed, 18 May 2016 07:32:46 -0400 Received: from ud10.udmedia.de ([194.117.254.50]:45126 "EHLO mail.ud10.udmedia.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751492AbcERLbo (ORCPT ); Wed, 18 May 2016 07:31:44 -0400 Date: Wed, 18 May 2016 13:31:40 +0200 From: Markus Trippelsdorf To: Al Viro Cc: linux-kernel@vger.kernel.org Subject: general protection fault (btrfs_real_readdir) Message-ID: <20160518113140.GA321@x4> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org I'm running the latest Linus git tree and the parallel filesystem directory handling update seems to cause the following issue: general protection fault: 0000 [#1] SMP CPU: 0 PID: 24801 Comm: ld Not tainted 4.6.0-03623-g0b7962a6c4a3-dirty #118 Hardware name: System manufacturer System Product Name/M4A78T-E, BIOS 3503 04/13/2011 task: ffff88016cafa800 ti: ffff8801076e0000 task.ti: ffff8801076e0000 RIP: 0010:[] [] btrfs_readdir_delayed_dir_index+0x73/0x120 RSP: 0018:ffff8801076e3dc0 EFLAGS: 00010202 RAX: dead000000000100 RBX: ffff8800dbbd3840 RCX: ffff8800dbbd3880 RDX: dead000000000200 RSI: ffff8801076e3e30 RDI: ffff8801076e3ef0 RBP: ffff8801076e3e30 R08: ffff88006ac4b798 R09: ffff880000000000 R10: 0000160000000000 R11: 0000000000001000 R12: dead000000000200 R13: dead000000000100 R14: ffff8801076e3ef0 R15: dead0000000000c0 FS: 00007f4782e04740(0000) GS:ffff88021fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f47821ef000 CR3: 00000001b9e38000 CR4: 00000000000006f0 Stack: ffff8801076e3e2f 0000000000003000 0000000000000001 ffff88006ac4b6f8 ffff8801076e3e30 ffff8801076e3ef0 0000000000000000 0000000000000008 ffffffff812f038b 0000001281e62a80 ffff880214ea8800 ffff8801986fdbd0 Call Trace: [] ? btrfs_real_readdir+0x44b/0x540 [] ? SyS_getdents+0x12d/0x2a0 [] ? SyS_ioctl+0x6a0/0x6a0 [] ? entry_SYSCALL_64_fastpath+0x13/0x8f Code: 02 00 00 00 00 ad de eb 1e f0 ff 4b 60 74 73 49 8b 47 40 49 8d 57 40 4c 89 fb 48 39 d5 4c 8d 78 c0 0f 84 8d 00 00 00 48 8b 53 48 <48> 89 50 08 48 89 02 4c 89 6b 40 4c 89 63 48 48 8b 4b 21 49 3b RIP [] btrfs_readdir_delayed_dir_index+0x73/0x120 RSP ---[ end trace 91067801e8a68a7e ]--- This happened while I was building gcc, so the system was very busy. -- Markus