Gentoo Archives: gentoo-user

From: Paul Hartman <paul.hartman+gentoo@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] How can I trigger kernel panic?
Date: Thu, 15 Mar 2012 19:37:59
Message-Id: CAEH5T2M8RW16QeeSY6dnD_p3hzrD2uzavjw-zTvpk37Qf399bQ@mail.gmail.com
In Reply to: Re: [gentoo-user] How can I trigger kernel panic? by Michael Mol
1 On Thu, Mar 15, 2012 at 2:25 PM, Michael Mol <mikemol@×××××.com> wrote:
2 > On Thu, Mar 15, 2012 at 3:17 PM, Mick <michaelkintzios@×××××.com> wrote:
3 >> On Thursday 15 Mar 2012 17:02:15 Michael Mol wrote:
4 >>> On Thu, Mar 15, 2012 at 12:55 PM, Jarry <mr.jarry@×××××.com> wrote:
5 >>> > On 14-Mar-12 19:41, ZHANG, Le wrote:
6 >>> >> >    So my question is: Can I somehow deliberately trigger
7 >>> >> >    "kernel panic" (or "kernel oops")?
8 >>> >>
9 >>> >> For panic, echo c > /proc/sysrq-trigger
10 >>> >
11 >>> > After I issued the above mentioned command, my system
12 >>> > instantly "froze to death". Nothing changed on screen,
13 >>> > no "kernel panic" or "Ooops" screen. Just frozen...
14 >>> >
15 >>> > No reaction to keyboard or mouse. No auto-reboot either.
16 >>> > The only thing I could do is to press "Reset". Not exactly
17 >>> > what I have been expecting...
18 >>>
19 >>> Were you running under X? The panic would have killed X, which
20 >>> wouldn't have released control over the video hardware.
21 >>>
22 >>> There's a SysRq sequence to get around this, but I don't remember it.
23 >>
24 >> Ctrl+Alt+
25 >>
26 >> R E I S U B
27 >>
28 >> (busier in reverse)
29 >>
30 >> After a E or I you should be back into a console, unless things are badly
31 >> screwed.
32 >
33 > Is that Ctrl+Alt+SysRq+(R E I S U B), or is the SysRq key not actually used?
34
35 Sysrq is definitely required :) Ctrl, on the other hand, is optional.
36 And AltGr may be substituted for Alt.

Replies

Subject Author
Re: [gentoo-user] How can I trigger kernel panic? Mick <michaelkintzios@×××××.com>
Re: [gentoo-user] How can I trigger kernel panic? "Claudio Roberto França Pereira" <spideybr@×××××.com>