From: John Reiser <jreiser@BitWagon.com>
To: Jeff Dike <jdike@addtoit.com>
Cc: uml-devel <user-mode-linux-devel@lists.sourceforge.net>
Subject: Re: [uml-devel] reading uninit memory in do_io (ubd_kern.c)
Date: Tue, 04 Dec 2007 16:46:36 -0800 [thread overview]
Message-ID: <4755F4EC.4050902@BitWagon.com> (raw)
In-Reply-To: <20071205002223.GC10763@c2.user-mode-linux.org>
> Have you actually got UML running under valgrind?
It's up to the point of user mode for process 1; see log below.
That means much of initialization, annotating the slab allocator
(kmalloc) enough to "hide" the allocation structures from outside access
but allow the allocator to reference them itself, and enough changes
to valgrind to tolerate more forms of clone() and to handle switching
stacks via longjmp(). I sent my changes for valgrind-3.2.3 to
valgrind-developers last weekend.
----- console transcript running UML under memcheck
[snip]
TCP cubic registered
NET: Registered protocol family 1
NET: Registered protocol family 17
Initialized stdio console driver
Console initialized on /dev/tty0
Initializing software serial port version 1
**24577** new_thread_handler fn=0x807FD8C arg=0x822AF48
[snip: panic due to SIGSEGV seen from wait_stub_done()]
-----
--
John Reiser, jreiser@BitWagon.com
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next prev parent reply other threads:[~2007-12-05 0:46 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-12-04 23:31 [uml-devel] reading uninit memory in do_io (ubd_kern.c) John Reiser
2007-12-05 0:22 ` Jeff Dike
2007-12-05 0:46 ` John Reiser [this message]
2007-12-05 2:17 ` Jeff Dike
2007-12-06 2:10 ` Jeff Dike
2007-12-06 4:37 ` John Reiser
2007-12-06 5:01 ` Jeff Dike
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