Date: Fri, 28 Dec 2007 15:37:45 -0500 From: John Baldwin <jhb@freebsd.org> To: freebsd-hackers@freebsd.org Cc: chandrabhagat@gmail.com, Sharad Chandra <sharadc@in.niksun.com> Subject: Re: trap 12 with interrupts disabled, need help Message-ID: <200712281537.46201.jhb@freebsd.org> In-Reply-To: <200712281127.53084.sharadc@in.niksun.com> References: <200712281127.53084.sharadc@in.niksun.com>
next in thread | previous in thread | raw e-mail | index | archive | help
On Friday 28 December 2007 12:57:52 am Sharad Chandra wrote: > Hi, > > I got a message on first boot "pid <no> (<name>): trap 12 with interrupts > disabled", then it hanged and hard boot is required. > It does not appears all the time. > > I tried to figure out the problem, trap 12 is stack exception, find at the > last > http://www.acm.uiuc.edu/sigops/roll_your_own/i386/idt.html > and is coming from kernel, > The location of this message is /usr/src/ > sys/amd64/amd64/trap.c: "pid %ld (%s): trap %d with > interrupts disabled\n", > > What does this exception mean, and what could be possible reason that my > program is doing wrong? How to handle it > > Platform: freebsd 6.1 on amd64 Trap numbers in FreeBSD don't quite match up to x86 IDT indices, so trap 12 ia actually a page fault. If it's from userland then somehow userland is disabling interrupts which is bad. -- John Baldwin
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?200712281537.46201.jhb>