From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: Fw: [Bug 33502] New: Caught 64-bit read from uninitialized memory in __alloc_skb Date: Mon, 18 Apr 2011 08:30:41 -0700 Message-ID: <20110418083041.5ca1a92d@nehalam> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit To: netdev@vger.kernel.org Return-path: Received: from smtp1.linux-foundation.org ([140.211.169.13]:50205 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753692Ab1DRPao (ORCPT ); Mon, 18 Apr 2011 11:30:44 -0400 Received: from nehalam (static-50-53-80-93.bvtn.or.frontiernet.net [50.53.80.93]) (authenticated bits=0) by smtp1.linux-foundation.org (8.14.2/8.13.5/Debian-3ubuntu1.1) with ESMTP id p3IFUgbM018808 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES128-SHA bits=128 verify=NO) for ; Mon, 18 Apr 2011 08:30:44 -0700 Sender: netdev-owner@vger.kernel.org List-ID: Begin forwarded message: Date: Sun, 17 Apr 2011 19:29:39 GMT From: bugzilla-daemon@bugzilla.kernel.org To: shemminger@linux-foundation.org Subject: [Bug 33502] New: Caught 64-bit read from uninitialized memory in __alloc_skb https://bugzilla.kernel.org/show_bug.cgi?id=33502 Summary: Caught 64-bit read from uninitialized memory in __alloc_skb Product: Networking Version: 2.5 Kernel Version: 2.6.39-rc3 Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: IPV4 AssignedTo: shemminger@linux-foundation.org ReportedBy: casteyde.christian@free.fr Regression: Yes Acer Aspire 1511LMi Athlon 64 3GHz in 64bits mode Slackware 64 13.1 Since 2.6.39-rc3 with kmemcheck enabled, I get the following warning: ... pcmcia_socket pcmcia_socket0: cs: memory probe 0x0c0000-0x0fffff: excluding 0xc0000-0xfffff pcmcia_socket pcmcia_socket0: cs: memory probe 0x60000000-0x60ffffff: excluding 0x60000000-0x 60ffffff pcmcia_socket pcmcia_socket0: cs: memory probe 0xa0000000-0xa0ffffff: excluding 0xa0000000-0x a0ffffff udev: renamed network interface wlan0 to eth1 WARNING: kmemcheck: Caught 64-bit read from uninitialized memory (ffff88001b0bb800) 00b00b1b0088ffff0000000000000000cafe1dea20009b0000299a3100000000 u u u u u u u u u u u u u u u u u u u u u u u u u u u u u u u u ^ Pid: 1511, comm: udevd Not tainted 2.6.39-rc3 #1 Acer,Inc. Aspire 1510 /Aspire 1510 RIP: 0010:[] [] __kmalloc_track_caller+0xbc/0x1d0 RSP: 0018:ffff88001d3a7a18 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000010 RCX: 000000000000284f RDX: 000000000000284e RSI: ffff88001fe5b160 RDI: ffffffff8177e39a RBP: ffff88001d3a7a48 R08: 0000000000000000 R09: ffff88001b931100 R10: 0000000000000000 R11: 0000000000000003 R12: ffff88001b0bb800 R13: ffff88001f803840 R14: 00000000000004d0 R15: ffffffff814769c6 FS: 00007f6ee81f1700(0000) GS:ffffffff81a1b000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: ffff88001d0b3938 CR3: 000000001d38b000 CR4: 00000000000006f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff4ff0 DR7: 0000000000000400 [] __alloc_skb+0x72/0x190 [] sock_alloc_send_pskb+0x236/0x3a0 [] sock_alloc_send_skb+0x10/0x20 [] unix_dgram_sendmsg+0x298/0x770 [] sock_sendmsg+0xe3/0x110 [] sys_sendmsg+0x243/0x3c0 [] system_call_fastpath+0x16/0x1b [] 0xffffffffffffffff Adding 506012k swap on /dev/sda1. Priority:-1 extents:1 across:506012k EXT4-fs (sda2): re-mounted. Opts: (null) EXT4-fs (sda2): re-mounted. Opts: (null) EXT3-fs: barriers not enabled kjournald starting. Commit interval 5 seconds EXT3-fs (sda3): using internal journal EXT3-fs (sda3): mounted filesystem with writeback data mode b43-phy0: Loading firmware version 478.104 (2008-07-01 00:50:23) ADDRCONF(NETDEV_UP): eth1: link is not ready b43-phy0: Loading firmware version 478.104 (2008-07-01 00:50:23) ... I cannot build 2.6.39-rc2, and in 2.6.39-rc1 I used to have another warning but not this one. -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug. --