Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933956AbdCUU7I (ORCPT ); Tue, 21 Mar 2017 16:59:08 -0400 Received: from scorn.kernelslacker.org ([45.56.101.199]:59246 "EHLO scorn.kernelslacker.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933223AbdCUU7G (ORCPT ); Tue, 21 Mar 2017 16:59:06 -0400 Date: Tue, 21 Mar 2017 16:59:01 -0400 From: Dave Jones To: Linux Kernel Cc: Al Viro Subject: iov_iter_pipe warning. Message-ID: <20170321205901.mojmjd2fxmykq3df@codemonkey.org.uk> Mail-Followup-To: Dave Jones , Linux Kernel , Al Viro MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline 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: 1042 Lines: 28 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);