ipconfig segmentation fault in kernel 2.6.24-18 with klibc-utils 1.4.30-3ubuntu2

[Angel]

In order to fix this issue, upgrade klibc-utils and libklibc to at least version 1.5.7-4ubuntu3

Here was the original repot with the problem,

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Hi, we use to boot our machines the diskless method through pxe + initramfs + squashfs +unionfs, and it worked great with kernel 2.6.20-16, but we need to migrate to kernel 2.6.24 and something strange is happening.

We use motherboard intel dg35ec which has a "Ethernet controller: Intel Corporation 82566DC Gigabit Network Connection" (e1000 module).

When it boot for first time,

can't open /tmp/net-eth0.conf
kernel panic

That mean that the kernel couldn't bring up the eth0 interface, but a few lines before that appear:

ipconfig:segfault at 400bf4 rip 400bf4 rsp "ex_number" error 14

So, I managed to put "strace" into the initramfs and add to the pxelinux.conf "break=mount" in order to get a shell in the initram and debug the problem.

the module e1000 is load successfully and without problem

$>modprobe e1000
Intel(R) PRO/1000 Network Driver - version 7.3.20-k2-NAPI
Copyright (c) 1999-2007 Intel Corporation.
ACPI: PCI Interrupt 0000:00:19.0[A] -> GSI 20 (level, low) -> IRQ 20
e1000: 0000:00:19.0: e1000_probe: (PCI Express:2.5Gb/s:Width x1) MAC
e1000: eth0: e1000_probe: Intel(R) PRO/1000 Network Connection

but ipconfig still fail.

$>ipconfig
ipconfig:segfault at 400bf4 rip 400bf4 rsp numero_en_hex_largo error 14

using strace:
$>strace -Ff -tt ipconfig
execve ("/bin/ipconfig","ipconfig","/*21 vars*/")=0
--- sigsegv (seg fault) @ 0 (0) ---
+++ killed by sigsegv +++

the packages are from official hardy :
linux-ubuntu-modules-2.6.24-18-generic (2.6.24-18.26)
linux-image-2.6.24-18-generic (2.6.24-18.32)
linux-restricted-modules2.6.24-18-generic (2.6.24.13-18.41)

I noticed that the e1000 driver is old, so I get the new one (8.0.3.1) from the intel home page, and the forked e1000e (0.4.1.7) which now include the PCI-expres's cards (my case)

e1000-8.0.3.1 http://downloadmirror.intel.com/9180/eng/e1000-8.0.3.1.tar.gz
e1000e-0.4.1.7 http://downloadmirror.intel.com/15817/eng/e1000e-0.4.1.7.tar.gz

But still SEG FAULT in ipconfig.

Thanks

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thanks

[Brian Murray (brian-murray)]

Thank you for taking the time to report this bug and helping to make Ubuntu better. This bug did not have a package associated with it, which is important for ensuring that it gets looked at by the proper developers. You can learn more about finding the right package at https://wiki.ubuntu.com/Bugs/FindRightPackage. I have classified this bug as a bug in linux.

[Angel (angel-arancibia)]

Sorry about the unclassified. There is something I can do to debug better this bug?

Thanks in advance

[Angel (angel-arancibia)]

I had made some more test.

I disabled the network interface from the BIOS, and put another different PCI card (Realtek RTL-8024). I boot form gPXE, and the result is the same.

The kernel report:
eth0: realtek RTL-8024 found at 0x1000, irq 17, MAC-address

$>ipconfig
ipconfig:segfault at 400bf4 rip 400bf4 rsp hex_number error 14

It seems that it is not a module (e1000 or e1000e) problem.

Thanks