Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934231AbdDEWC7 (ORCPT ); Wed, 5 Apr 2017 18:02:59 -0400 Received: from scorn.kernelslacker.org ([45.56.101.199]:46872 "EHLO scorn.kernelslacker.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932280AbdDEWCx (ORCPT ); Wed, 5 Apr 2017 18:02:53 -0400 Date: Wed, 5 Apr 2017 18:02:50 -0400 From: Dave Jones To: Linux Kernel , Al Viro Subject: Re: iov_iter_pipe warning. Message-ID: <20170405220250.3alrm62fxeadaozd@codemonkey.org.uk> Mail-Followup-To: Dave Jones , Linux Kernel , Al Viro References: <20170321205901.mojmjd2fxmykq3df@codemonkey.org.uk> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20170321205901.mojmjd2fxmykq3df@codemonkey.org.uk> User-Agent: NeoMutt/20170306 (1.8.0) X-Spam-Note: SpamAssassin invocation failed Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1327 Lines: 34 On Tue, Mar 21, 2017 at 04:59:01PM -0400, Dave Jones wrote: > WARNING: CPU: 0 PID: 9290 at lib/iov_iter.c:836 iov_iter_pipe+0x71/0x80 > CPU: 0 PID: 9290 Comm: trinity-c7 Not tainted 4.11.0-rc3-think+ #3 > Call Trace: > dump_stack+0x68/0x93 > __warn+0xcb/0xf0 > warn_slowpath_null+0x1d/0x20 > iov_iter_pipe+0x71/0x80 > generic_file_splice_read+0x37/0x140 > do_splice_to+0x79/0x90 > splice_direct_to_actor+0xb8/0x220 > ? generic_pipe_buf_nosteal+0x10/0x10 > do_splice_direct+0x9e/0xd0 > do_sendfile+0x1d7/0x3c0 > SyS_sendfile64+0x73/0xe0 > do_syscall_64+0x66/0x1d0 > entry_SYSCALL64_slow_path+0x25/0x25 > RIP: 0033:0x7f86804bf0f9 > RSP: 002b:00007ffd5e613038 EFLAGS: 00000246 > ORIG_RAX: 0000000000000028 > RAX: ffffffffffffffda RBX: 0000000000000028 RCX: 00007f86804bf0f9 > RDX: 00007f867e92a000 RSI: 000000000000018b RDI: 000000000000011b > RBP: 00007f8680b5d000 R08: 0000000000000000 R09: ffffffffffffff5b > R10: 0000000000221200 R11: 0000000000000246 R12: 0000000000000002 > R13: 00007f8680b5d048 R14: 00007f8680b95ad8 R15: 00007f8680b5d000 > ---[ end trace e50d88214985fd43 ]--- > > > 836 WARN_ON(pipe->nrbufs == pipe->buffers); Still hitting this regularly. Takes a couple hours usually, but it seems to be the only thing that falls out of trinity runs lately. Dave