Gentoo Archives: gentoo-embedded

From: Mike Frysinger <vapier@g.o>
To: gentoo-embedded@l.g.o
Cc: Natanael Copa <mlists@××××××.org>
Subject: Re: [gentoo-embedded] lockups with hardened kernel
Date: Sat, 07 Jan 2006 07:35:01
Message-Id: 200601070235.18447.vapier@gentoo.org
In Reply to: Re: [gentoo-embedded] lockups with hardened kernel by Natanael Copa
1 On Saturday 07 January 2006 02:30, Natanael Copa wrote:
2 > On lør, 2006-01-07 at 00:44 -0500, Mike Frysinger wrote:
3 > > On Wednesday 04 January 2006 03:52, Natanael Copa wrote:
4 > > > I got a report from someone who experienced lockups when using
5 > > > gentoo-embedded built system (2.6.14-hardened-r1)
6 > >
7 > > this is a hardened kernel issue rather than a userland issue ... you'd be
8 > > better off e-mailing the gentoo-hardened list
9 >
10 > Probably, but I think I found the reason. Whenever I build the kernel
11 > with "optimize for size" it hangs after an hour with intense net load
12 > and io load (I made a loop that dd if=/dev/cdrom)
13 >
14 > When I disabled "Configure standard kernel features (for small
15 > systems)" (gcc -Os) the problem magically went away.
16
17 the kernel can be pretty sensitive to optimizations
18
19 > So I think its a bug in gcc version 3.4.4 (Gentoo Hardened 3.4.4-r1,
20 > ssp-3.4.4-1.0, pie-8.7.8)
21 >
22 > Makes me nervous because I have built everything with -Os.
23 >
24 > I can probably just report it on bugzilla directly?
25
26 yes, but you probably wont get much feedback :/
27 -mike
28
29 --
30 gentoo-embedded@g.o mailing list

Replies

Subject Author
Re: [gentoo-embedded] lockups with hardened kernel "Peter S. Mazinger" <ps.m@×××.net>