Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756953AbYHUQPd (ORCPT ); Thu, 21 Aug 2008 12:15:33 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752684AbYHUQPX (ORCPT ); Thu, 21 Aug 2008 12:15:23 -0400 Received: from rgminet01.oracle.com ([148.87.113.118]:44048 "EHLO rgminet01.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751839AbYHUQPW (ORCPT ); Thu, 21 Aug 2008 12:15:22 -0400 Date: Thu, 21 Aug 2008 09:15:14 -0700 From: Randy Dunlap To: "Miller, Mike (OS Dev)" Cc: lkml , scsi , akpm Subject: Re: in 2.6.23-rc3-git7 in do_cciss_intr Message-Id: <20080821091514.8f56e2d5.randy.dunlap@oracle.com> In-Reply-To: <0F5B06BAB751E047AB5C87D1F77A7788351181004C@GVW0547EXC.americas.hpqcorp.net> References: <48AD02B2.7020004@oracle.com> <0F5B06BAB751E047AB5C87D1F77A778835116209D3@GVW0547EXC.americas.hpqcorp.net> <20080821084333.c471b439.randy.dunlap@oracle.com> <0F5B06BAB751E047AB5C87D1F77A7788351181004C@GVW0547EXC.americas.hpqcorp.net> Organization: Oracle Linux Eng. X-Mailer: Sylpheed 2.5.0 (GTK+ 2.12.0; x86_64-unknown-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-Brightmail-Tracker: AAAAAQAAAAI= X-Brightmail-Tracker: AAAAAQAAAAI= X-Whitelist: TRUE X-Whitelist: TRUE Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 4851 Lines: 120 On Thu, 21 Aug 2008 15:48:35 +0000 Miller, Mike (OS Dev) wrote: > > > > -----Original Message----- > > From: Randy Dunlap [mailto:randy.dunlap@oracle.com] > > Sent: Thursday, August 21, 2008 10:44 AM > > To: Miller, Mike (OS Dev) > > Cc: lkml; scsi; akpm > > Subject: Re: in 2.6.23-rc3-git7 in do_cciss_intr > > > > On Thu, 21 Aug 2008 14:26:06 +0000 Miller, Mike (OS Dev) wrote: > > > > > > > > > > > > -----Original Message----- > > > > From: rdunlap [mailto:randy.dunlap@oracle.com] > > > > Sent: Thursday, August 21, 2008 12:53 AM > > > > To: lkml; scsi; Miller, Mike (OS Dev) > > > > Subject: BUG: in 2.6.23-rc3-git7 in do_cciss_intr > > > > > > > > on x86_64, 4 proc, 8 GB RAM: > > > > > > > > calling cciss_init+0x0/0x2e [cciss] HP CISS Driver (v 3.6.20) > > > > ACPI: PCI Interrupt Link [LNKA] enabled at IRQ 54 cciss > > > > 0000:42:08.0: PCI INT A -> Link[LNKA] -> GSI 54 (level, high) > > > > -> IRQ 54 > > > > cciss0: <0x3238> at PCI 0000:42:08.0 IRQ 503 using DAC > > > > BUG: unable to handle kernel NULL pointer dereference at > > > > 0000000000000248 > > > > IP: [] do_cciss_intr+0x627/0xa6c [cciss] PGD > > > > 17e422067 PUD 17e423067 PMD 0 > > > > Oops: 0002 [1] SMP > > > > CPU 2 > > > > Modules linked in: cciss(+) ehci_hcd ohci_hcd uhci_hcd > > > > Pid: 0, comm: swapper Not tainted 2.6.27-rc3-git7 #1 > > > > RIP: 0010:[] [] > > > > do_cciss_intr+0x627/0xa6c [cciss] > > > > RSP: 0018:ffff88027f66fee8 EFLAGS: 00010007 > > > > RAX: 0000000000000000 RBX: ffff88007f840270 RCX: 000000000000000c > > > > RDX: 0000000000000000 RSI: ffff88027e5c0000 RDI: ffff88027e5c0000 > > > > RBP: ffff88027f66ff18 R08: 0000000000000000 R09: ffff88017fa95e88 > > > > R10: 0000000000000000 R11: ffff88027f66ff48 R12: ffff88027e5c0000 > > > > R13: 0000000000000000 R14: 00000000000001f7 R15: 0000000000000086 > > > > FS: 0000000000680850(0000) GS:ffff88017fc02c80(0000) > > > > knlGS:0000000000000000 > > > > CS: 0010 DS: 0018 ES: 0018 CR0: 000000008005003b > > > > CR2: 0000000000000248 CR3: 000000017e425000 CR4: 00000000000006e0 > > > > DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 > > > > DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: > > > > 0000000000000400 Process swapper (pid: 0, threadinfo > > > > ffff88017fa94000, task ffff88027f63d340) > > > > Stack: ffff88027f66fee0 ffff88017e9b4800 0000000000000000 > > > > 0000000000000000 > > > > 00000000000001f7 0000000000000000 ffff88027f66ff48 > > ffffffff8026757e > > > > ffffffff80719000 00000000000001f7 ffff88017e9b4800 > > ffffffff80719050 > > > > Call Trace: > > > > [] handle_IRQ_event+0x27/0x57 > > > > [] handle_edge_irq+0xed/0x12e > > [] > > > > do_IRQ+0xf6/0x167 [] > > ret_from_intr+0x0/0xa > > > > [] ? > > > > default_idle+0x2b/0x40 [] ? > > > > c1e_idle+0xd4/0xdb [] ? > > > > atomic_notifier_call_chain+0xf/0x11 > > > > [] ? cpu_idle+0x71/0x8f [] ? > > > > start_secondary+0x157/0x15c > > > > > > > > > > > > Code: 8b 83 48 02 00 00 48 39 d8 74 37 49 39 9c 24 c0 00 > > 01 00 75 08 > > > > 49 89 84 24 c0 00 01 00 48 8b 83 40 02 00 00 48 8b > > > > 93 48 02 00 00 <48> 89 90 48 02 00 00 48 8b 93 48 02 00 00 48 > > > > 89 82 40 02 00 00 RIP [] > > > > do_cciss_intr+0x627/0xa6c [cciss] RSP > > > > CR2: 0000000000000248 > > > > ---[ end trace 902dc79a9e72d3ed ]--- > > > > > > > > > > Randy, > > > Sorry I haven't replied sooner. I saw your earlier mail, > > just been busy breaking stuff internally. Did this happen > > during driver init or runtime? > > > > Hi Mike, > > > > It's very much during driver init. > > > > Full boot log and .config are attached. > > > > Andrew: I'll rerun the test ASAP. Machine is busy atm. > > Randy, > We know of a race condition in cciss_init_one. It's fixed in 2.6.26 I believe. Here's the patch: > > http://groups.google.com/group/linux.kernel/browse_thread/thread/7b39f2b77622ab03/4f5f45c008655ca1?hl=en&lnk=gst&q=cciss#4f5f45c008655ca1 Mike, Sorry, but my fingers have typoed the $subject. My bad. Kernel is 2.6.27-rc3-git7 (from above): > > > > Modules linked in: cciss(+) ehci_hcd ohci_hcd uhci_hcd > > > > Pid: 0, comm: swapper Not tainted 2.6.27-rc3-git7 #1 > > > > RIP: 0010:[] [] > > > > do_cciss_intr+0x627/0xa6c [cciss] --- ~Randy Linux Plumbers Conference, 17-19 September 2008, Portland, Oregon USA http://linuxplumbersconf.org/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/