GNU GRUB - Bugs: bug #11312, grub segfaults on (internal)...

You are not allowed to post comments on this tracker with your current authentication level.

bug #11312: grub segfaults on (internal) nested function calls on x86_64

Submitter:	None
Submitted:	Mon 13 Dec 2004 04:32:09 PM UTC
Category:	Installation	Severity:	Major
Priority:	5 - Normal	Item Group:	Software Error
Status:	Postponed	Privacy:	Public
Assigned to:	None	Originator Name:	John Lane
Originator Email:	-email is unavailable-	Open/Closed:	Closed
Release:	None	Release:	0.95
Reproducibility:	Every Time	Planned Release:	None

Sat 15 Dec 2007 04:46:00 PM UTC, comment #3:  We've moved to GRUB 2 as a development platform. Please can you check if this bug still applies there, and if it does, reopen it? Thanks	Robert Millan <robertmh>
Sun 26 Jun 2005 11:04:21 PM UTC, comment #2:  Debian BTS has another patch, which suggests only "scratch" needs PROT_EXEC, not "disks". Or it may be wrong. http://bugs.debian.org/cgi-bin/bugreport.cgi/mprotect.diff?bug=293722&msg=3&att=1	Lionel Elie Mamane <lmamane>
Sun 19 Dec 2004 02:57:43 PM UTC, comment #1:  ChangeLog, please.	Yoshinori K. Okuji <okuji>
Mon 13 Dec 2004 04:32:09 PM UTC, original submission:   Environment: x86_64 / gcc-3.3.3 / kernel 2.6.9 / glibc-2.3.3 Symptom: grub segfaults on nested function calls Problem:   1) malloc'd pages seem to lack the execute bit on x86_64;   2) grub seems to use some stack pointer diversion to malloc'd pages;   3) nested functions execute data on the stack;   4) this causes a segfault (at least on my machine) A patch to use mmap'd executable pages is attached. jrl.	Anonymous

 

(Note: upload size limit is set to 16384 kB, after insertion of the required escape characters.)

Attached Files

file #2213:  grub-0.95-use_mmap_exec_stack.patch added by None (1KiB - text/x-patch - Patch to use mmap'd memory for executable dynamically allocated stack pages.)

 

Depends on the following items: None found

Items that depend on this one: None found

 

Carbon-Copy List

-email is unavailable- added by robertmh (Posted a comment)

 

There are 0 votes so far. Votes easily highlight which items people would like to see resolved in priority, independently of the priority of the item set by tracker managers.

 

Follow 3 latest changes.

Date	Changed by	Updated Field	Previous Value	=>	Replaced by
2007-12-15	robertmh	Open/Closed	Open		Closed
2004-12-19	okuji	Status	None		Postponed
2004-12-13	None	Attached File	-		Added grub-0.95-use_mmap_exec_stack.patch, #1972

Copyright © 2024 Free Software Foundation, Inc.
Verbatim copying and distribution of this entire article is permitted in any medium, provided this notice is preserved.
The Levitating, Meditating, Flute-playing Gnu logo is a GNU GPL'ed image provided by the Nevrax Design Team.
Page source code