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Re: [Qemu-block] [Qemu-devel] qemu process crash: Assertion failed: QLIS

From: Stefan Hajnoczi
Subject: Re: [Qemu-block] [Qemu-devel] qemu process crash: Assertion failed: QLIST_EMPTY(&bs->tracked_requests)
Date: Mon, 29 Jan 2018 16:01:04 +0000
User-agent: Mutt/1.9.1 (2017-09-22)

On Wed, Dec 13, 2017 at 03:33:01PM +0000, Fernando Casas Schössow wrote:
> Maybe I’m missing something here but, if I recall correctly, the qemu process 
> for the guest is terminated when this problem happens. So how a debugger will 
> be attached to a process that is gone?

Sorry, this got lost in my inbox.

assert(false) sends SIGABRT to the process.  The default behavior is to
dump a core file that can be analyzed later with GDB.

Your system must have core dumps enabled (i.e. ulimit -c unlimited).
Also, various pieces of software like systemd's coredumpctl can
influence where and how core dumps are stored.

But in short, an assertion failure produces a core dump.


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