From mboxrd@z Thu Jan 1 00:00:00 1970 From: Andrew Morton Subject: Re: [Bugme-new] [Bug 27212] New: Warning kmemcheck: Caught 64-bit read from uninitialized memory in netlink_broadcast_filtered Date: Thu, 20 Jan 2011 12:25:49 -0800 Message-ID: <20110120122549.85863a84.akpm@linux-foundation.org> References: Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: bugzilla-daemon@bugzilla.kernel.org, bugme-daemon@bugzilla.kernel.org, casteyde.christian@free.fr To: netdev@vger.kernel.org Return-path: Received: from smtp1.linux-foundation.org ([140.211.169.13]:58842 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754687Ab1ATU04 (ORCPT ); Thu, 20 Jan 2011 15:26:56 -0500 In-Reply-To: Sender: netdev-owner@vger.kernel.org List-ID: (switched to email. Please respond via emailed reply-to-all, not via the bugzilla web interface). On Thu, 20 Jan 2011 20:08:32 GMT bugzilla-daemon@bugzilla.kernel.org wrote: > https://bugzilla.kernel.org/show_bug.cgi?id=27212 > > Summary: Warning kmemcheck: Caught 64-bit read from > uninitialized memory in netlink_broadcast_filtered > Product: Other > Version: 2.5 > Kernel Version: 2.6.38-rc1 > Platform: All > OS/Version: Linux > Tree: Mainline > Status: NEW > Severity: normal > Priority: P1 > Component: Other > AssignedTo: other_other@kernel-bugs.osdl.org > ReportedBy: casteyde.christian@free.fr > Regression: Yes > > > Athlon 64 X2 3000 in 64bits > Slackware64 13.1 > Kernel compiled with kmemcheck and other debug options > > At boot I got the following warning: > > PCI: Using ACPI for IRQ routing > PCI: pci_cache_line_size set to 64 bytes > pci 0000:00:00.0: address space collision: [mem 0xe0000000-0xefffffff pref] > conflicts with GART [mem 0x > e0000000-0xefffffff] > reserve RAM buffer: 000000000009fc00 - 000000000009ffff > reserve RAM buffer: 000000003ffb0000 - 000000003fffffff > WARNING: kmemcheck: Caught 64-bit read from uninitialized memory > (ffff88003e170eb0) > 0000000000000000010000000000000000000000000000000000000000000000 > i i i i i i i i i i i i u u u u u u u u u u u u u u u u u u u u > ^ > > Pid: 1, comm: swapper Not tainted 2.6.38-rc1 #2 K8 Combo-Z/K8 Combo-Z > RIP: 0010:[] [] memmove+0x122/0x1a0 > RSP: 0018:ffff88003e0b3c60 EFLAGS: 00010202 > RAX: ffff88003e170080 RBX: ffff88003e27b500 RCX: 0000000000000020 > RDX: 0000000000000018 RSI: ffff88003e170ea0 RDI: ffff88003e1700a0 > RBP: ffff88003e0b3c60 R08: 0000000000000001 R09: 0000000000000001 > R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 > R13: 0000000000000080 R14: 0000000000000000 R15: 0000000000000001 > FS: 0000000000000000(0000) GS:ffff88003fc00000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b > CR2: ffff88003e018abc CR3: 0000000001a1c000 CR4: 00000000000006f0 > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 > [] pskb_expand_head+0xc2/0x2a0 > [] netlink_broadcast_filtered+0xa7/0x4a0 > [] netlink_broadcast+0x18/0x20 > [] genlmsg_mcast+0x144/0x180 > [] genl_ctrl_event+0xca/0x450 > [] genl_register_mc_group+0x10d/0x2a0 > [] genl_init+0x6c/0x84 > [] do_one_initcall+0x3e/0x170 > [] kernel_init+0x197/0x21b > [] kernel_thread_helper+0x4/0x10 > [] 0xffffffffffffffff > pnp: PnP ACPI init > ACPI: bus type pnp registered > pnp 00:00: [bus 00-ff] > pnp 00:00: [io 0x0cf8-0x0cff] > > This is specific to 2.6.38-rc1. >