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Re: kern/37933: very frequent crashes after suspend/resume
The following reply was made to PR kern/37933; it has been noted by GNATS.
From: "Jared D. McNeill" <jmcneill%invisible.ca@localhost>
Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
Subject: Re: kern/37933: very frequent crashes after suspend/resume
Date: Sat, 09 Feb 2008 21:16:56 -0500
Steven M. Bellovin wrote:
> The following reply was made to PR kern/37933; it has been noted by GNATS.
> From: "Steven M. Bellovin" <smb%cs.columbia.edu@localhost>
> To: gnats-bugs%NetBSD.org@localhost
> Cc: gnats-admin%NetBSD.org@localhost
> Subject: Re: kern/37933: very frequent crashes after suspend/resume
> Date: Sun, 10 Feb 2008 00:15:15 +0000
> I managed to get a core dump. I booted single-user, set ddb.onpanic=0,
> zeroed most of main memory via a program that malloced a lot of
> memory with _malloc_options=Z to make the core dump smaller, and did two
> sysctl machdep.sleep_state=3. On the second resume, it panicked. The
> resulting dump and kernel file (with symbols) are at
> The traceback in the dump (and for that matter the panic string printed
> at crash time) are different than in the original PR, but I suspect
> that that's more a helpful clue than a hindrance -- the crash is 100%
> reproducible, which suggests that the different backtraces are symptoms
> of the same underlying issue.
> This dump, btw, is from 4.99.53, from sources retrieved today.
Are you using cpuctl to offline all APs before you suspend?
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