Bug 80832

Summary:	(kernel) BUG at page_alloc.c:142 when PaX enabled
Product:	Gentoo Linux	Reporter:	M Grundman <grundman>
Component:	Hardened	Assignee:	The Gentoo Linux Hardened Team <hardened>
Status:	RESOLVED NEEDINFO
Severity:	critical
Priority:	High
Version:	unspecified
Hardware:	x86
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:	84167
Bug Blocks:
Attachments:	kernel bug trace

Description M Grundman 2005-02-05 00:10:18 UTC

Mozilla and Firefox provoke a kernel bug when PaX is enabled
when Paging based PAGE_EXEC and Segmentation based PAGE_EXEC are disabled the bug disappear
the bug repeat all the time for the same combination of web surfing however it cannot be reproduced all the time

the bug appears with 2.4.28-hardened-r4 and all kernel versions I tested before



Reproducible: Sometimes
Steps to Reproduce:
1.
2.
3.

Comment 1 M Grundman 2005-02-05 00:12:46 UTC

Created attachment 50418 [details]
kernel bug trace

This kernel bug trace is always the same.

Comment 2 solar (RETIRED) gentoo-dev

2005-02-05 05:48:25 UTC

Please attach your complete kernel.config

Comment 3 Lorenzo Hernández García-Hierro 2005-03-10 10:35:05 UTC

Also, try to get the translated calls (this can be done also by manually looking at the System.map and grabbing the calls by ther addresses with gdb) using ksymoops, so, it will process the event output and translate them automatically.

After doing that, and having your .config, we will be able to trace the error and quite possibly locate the fault.

Cheers and thanks in advance,
Lorenzo.

Comment 4 Adam Mondl (RETIRED) gentoo-dev

2005-04-21 18:15:28 UTC

Please reopen if you can provide the requested information duplicated on the current hardened-sources-2.6.