linux-kernel - Re: Strange problem with e1000 driver

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-id: <alpine.LFD.1.10.0806251502000.3014@localhost.localdomain>
Date:	Wed, 25 Jun 2008 15:04:59 -0400 (EDT)
From:	Len Brown <lenb@...nel.org>
To:	Srivatsa Vaddagiri <vatsa@...ux.vnet.ibm.com>
Cc:	Robert Hancock <hancockr@...w.ca>, linux-kernel@...r.kernel.org,
	e1000-devel@...ts.sourceforge.net, varunc@...ux.vnet.ibm.com,
	jbarnes@...tuousgeek.org, greg@...ah.com
Subject: Re: Strange problem with e1000 driver - ping packet loss



On Wed, 25 Jun 2008, Len Brown wrote:

> > Linux version 2.6.18-53.el5
 
can you find out if the latest upstream kernel still has this problem?

> > ACPI: PCI Interrupt 0000:00:1d.1[B] -> GSI 19 (level, low) -> IRQ 177
> > PCI: Setting latency timer of device 0000:00:1d.1 to 64
> > uhci_hcd 0000:00:1d.1: UHCI Host Controller
> > uhci_hcd 0000:00:1d.1: new USB bus registered, assigned bus number 2
> > uhci_hcd 0000:00:1d.1: irq 177, io base 0x0000e880
> 
> > SELinux: initialized (dev sysfs, type sysfs), uses genfs_contexts
> > audit(1213972202.305:3): policy loaded auid=4294967295
> > Intel(R) PRO/1000 Network Driver - version 7.3.20-k2-NAPI
> > Copyright (c) 1999-2006 Intel Corporation.
> > ACPI: PCI Interrupt 0000:02:02.0[B] -> GSI 18 (level, low) -> IRQ 193
> > e1000: 0000:02:02.0: e1000_probe: (PCI-X:66MHz:64-bit) 00:04:23:00:90:ab
> > e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network Connection
> > ACPI: PCI Interrupt 0000:02:02.1[B] -> GSI 18 (level, low) -> IRQ 193
> > e1000: 0000:02:02.1: e1000_probe: (PCI-X:66MHz:64-bit) 00:04:23:00:90:aa
> > e1000: eth1: e1000_probe: Intel(R) PRO/1000 Network Connection

your /proc/interrutps showed just eth1, and it was on IRQ 177 --
was that from a different boot than this dmesg?

in any case, when you boot these on a new kernel
they should both show up on IRQ 18 (because they're on GSI 18).

Also, these IOAPIC interrupts are not programmable -- they
are hard-coded, so the issue is not in the ACPI PCI interrupt
link programming code.

-Len

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/