From: Oleg Drokin <green@linuxhacker.ru>
To: m.a.young@durham.ac.uk, jdike@addtoit.com,
user-mode-linux-devel@lists.sourceforge.net
Subject: Re: [uml-devel] Sleeping process getting segfault signal
Date: Sun, 2 Nov 2003 11:23:51 +0200 [thread overview]
Message-ID: <200311020923.hA29Np9K029637@car.linuxhacker.ru> (raw)
In-Reply-To: Pine.GSO.4.58.0311012137370.355@altair.dur.ac.uk
Hello!
M A Young <m.a.young@durham.ac.uk> wrote:
MAY> I have a reproduceable crash, at least with certain host kernels (eg.
MAY> from RedHat's current beta), and a 2.6 uml kernel, and get errors like
MAY> sleeping process 1786 got unexpected signal : 11
MAY> immediately after I type halt in a uml window. Does anyone know what might
MAY> be going on here, or how I might debug it further?
I see similar problems, but unrelated to 'halt'. They appear ocasionally.
And are very much like that problem you reported earlier (about copy from user).
It happens in the same place for me, Jeff's patch that converts *jmp() calls
to sig*jmp() is present in my tree.
Jeff: I finally hit the problem yesterday with extra debug code to save the
sigmask. Here's what I see. (also include sigjump buffer that was setup later
than sigprocmask was run).
sigmask = {__val = {134284288, 0, 0, 0, 134284288, 0, 23441,
0 <repeats 12 times>, 2776382020, 0, 2776381980, 2685736023, 2776382020,
0, 2776382020, 2776382172, 2685229112, 0, 0, 0, 2776382068}}
jbuf = {{__jmpbuf = {-1518585548, 800, -1607600160, -1518585268, -1518585740,
-1609727948}, __mask_was_saved = 1, __saved_mask = {__val = {134284288,
0, 2776382332, 2776382324, 1, 2776382372, 2776382372, 0, 14, 7,
2685735890, 115, 642, 2776382324, 123, 0, 134284288, 135492232, 1, 8,
2776367104, 2776381732, 2685239162, 29, 2776381744, 0, 0, 0, 0,
2776382476, 2685735368, 29}}}}
Bye,
Oleg
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next prev parent reply other threads:[~2003-11-02 9:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-11-01 21:51 [uml-devel] Sleeping process getting segfault signal M A Young
2003-11-02 9:23 ` Oleg Drokin [this message]
2003-11-03 2:36 ` Jeff Dike
2003-11-03 12:21 ` Oleg Drokin
2003-11-02 14:24 ` Jeff Dike
2003-11-03 2:43 ` Jeff Dike
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