Bug 132069

Summary:	Kernel panic with sky2 driver and gentoo-sources-2.6.16-r6
Product:	Gentoo Linux	Reporter:	Barry Shilliday <teppic74>
Component:	[OLD] Core system	Assignee:	Gentoo Kernel Bug Wranglers and Kernel Maintainers <kernel>
Status:	RESOLVED FIXED
Severity:	normal
Priority:	High
Version:	2005.1
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---

Description Barry Shilliday 2006-05-02 16:20:53 UTC

A separate issue found while investigating bug #132056:

On rebooting 2.6.16-r6 I've received some kernel panics. I cannot copy
and paste the information but have recorded this:

Unable to handle kernel NULL pointer dereference at virtual address 00000428
EIP is at sky2_poll+0x1da/0x870 [sky2]

Call Trace: [truncated]
ktime_get
net_rx_action
__do_softirq
do_IRQ
common_interrupt
default_idle
cpu_idle
start_kernel
unknown_bootoption

Kernel panic - not syncing: Fatal exception in interrupt.

The problem exists in conjunction with extremely poor performance from the sky2 driver and doesn't occur at all on the 2.6.15 kernels which use an earlier version of the driver.

Comment 1 Daniel Drake (RETIRED) gentoo-dev

2006-05-03 14:17:14 UTC

Does this happen on every reboot?

Can you reproduce this on the latest development kernel? Currently 2.6.17-rc3 -- it has the same sky2 version, but sky2 may be depending on some new network-layer behaviour.

If it happens on 2.6.17-rc3, please note down the EIP line again.

Comment 2 Barry Shilliday 2006-05-06 01:30:06 UTC

It doesn't happen on every reboot. I have however had the same panic with the newer 1.3rc1 sky2 driver. I will try the vanilla 2.6.17-rc3 sources and report back.

Comment 3 Daniel Drake (RETIRED) gentoo-dev

2006-05-21 08:36:50 UTC

Should be fixed as of gentoo-sources-2.6.16-r8, please reopen if this happens again.