linux-kernel - Is there a way to trigger an interrupt from user-space?

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

Message-ID: <20090209122101.27925.qmail@science.horizon.com>
Date:	Mon, 09 Feb 2009 07:21:01 -0500
From:	"George Spelvin" <linux@...izon.com>
To:	linux-kernel@...r.kernel.org
Cc:	linux@...izon.com
Subject: Is there a way to trigger an interrupt from user-space?

I'm debugging a driver, and I think an interrupt is getting lost.
Is there something under /proc or /sys that lets me say "pretend like
interrupt #x just arrived", to kick it back into life?

Basically, I want to kill(2) the kernel.

It seems like a sufficiently useful debugging hack that I thought someone
might have implemented it already, although I'm not finding mention of
it anywhere obvious.

(H'm... can the processor generate an arbitrary interrupt by writing to an
MSI address?)
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/