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Date:      Mon, 29 Oct 2001 20:49:27 -0800
From:      Marcel Moolenaar <marcel@xcllnt.net>
To:        Andrew Gallatin <gallatin@cs.duke.edu>
Cc:        alpha@FreeBSD.ORG
Subject:   Re: Linuxulator MFC candidate for testing
Message-ID:  <20011029204927.A737@dhcp01.pn.xcllnt.net>
In-Reply-To: <15326.5246.267516.981863@grasshopper.cs.duke.edu>
References:  <20011026220239.A4254@dhcp01.pn.xcllnt.net> <15326.5246.267516.981863@grasshopper.cs.duke.edu>

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On Mon, Oct 29, 2001 at 09:46:22PM -0500, Andrew Gallatin wrote:
> 
> DUMMY(mount) needs to be added to sys/alpha/linux/linux_dummy.c
> to make the module load.

Fixed, thanks.

> The second, much more serious problem, is that when I run the Compaq
> JRE/JDK for linux the system locks up. It responds to pings,etc.  But
> all shells are dead, X locks up, etc.  Its like its in a really tight
> loop in sigsuspend()..  This is reproducible.

Ouch :-(

> The stack trace looks like this:
> 
> 
> db> tr
> siointr1() at siointr1+0x160
> siointr() at siointr+0x14
> isa_handle_intr() at isa_handle_intr+0x2c
> alpha_dispatch_intr() at alpha_dispatch_intr+0x8c
> interrupt() at interrupt+0x1d8
> XentInt() at XentInt+0x28
> --- interrupt (from ipl 0) ---
> tsleep() at tsleep+0x394
> sigsuspend() at sigsuspend+0xd8
> osf1_sigsuspend() at osf1_sigsuspend+0x84
> syscall() at syscall+0x224
> XentSys() at XentSys+0x5c
> --- syscall (111, Linux ELF, osf1_sigsuspend) ---
> --- user mode ---
> db> 
> 
> 
> Yes, I realize that's an osf1_sigsuspend() getting called through the
> linux sysent.  It works fine in the old, pre-patch code.  I don't
> understand how you could have broken this with your patch.
> 
> Any ideas?

The one thing that comes to mind is linux_clone. If the cloning
doesn't work right, there's no process to deliver a signal.

Can you test with the changes to linux_clone reverted?

-- 
 Marcel Moolenaar	  USPA: A-39004		 marcel@xcllnt.net

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