kern/96981: reproducible instant reboot by unprivileged user

[Gavin Atkinson]

The following reply was made to PR amd64/96981; it has been noted by GNATS.

From: Gavin Atkinson <gavin.atkinson at ury.york.ac.uk>
To: Lodewijk =?ISO-8859-1?Q?V=F6ge?= <lvoege at gmail.com>
Cc: bug-followup at FreeBSD.org
Subject: Re: kern/96981: reproducible instant reboot by unprivileged user
Date: Thu, 10 May 2007 17:17:49 +0100

 I have been able to recreate this on an amd64 system of my own as
 follows:
 
 Fresh install of 6.2-RELEASE-amd64
 ports tree from 2007.02.13.06.40.00 (newer trees have the port BROKEN on
 amd64, for unrelated reasons)
 
 cd /usr/ports/lang/mono && make install
 (accept default options for all ports)
 
 As regular user:
 Create example file in PR written to 96981.m
 
 $ mcs 96981.m
 $ gdb /usr/local/bin/mono
 (gdb) set args 96981.exe
 (gdb) r
 Starting program: /usr/local/bin/mono 96981.exe
 (no debugging symbols found)...(no debugging symbols found)...(no
 debugging symbols found)...(no debugging symbols found)...(no debugging
 symbols found)...(no debugging symbols found)...(no debugging symbols
 found)...warning: Unable to get location for thread creation breakpoint:
 generic error
 [New LWP 100094]
 (no debugging symbols found)...(no debugging symbols found)...[New
 Thread 0x6eb000 (LWP 100094)]
 
 Program received signal SIGSEGV, Segmentation fault.
 [Switching to Thread 0x6eb000 (LWP 100094)]
 0x00000000004cec66 in GC_push_all_stack ()
 (gdb) c
 Continuing.
 Read from remote host ga9test3.york.ac.uk: Connection reset by peer
 
 Sadly, I don't currently have an amd64 system with a serial port
 available.