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Re: kern/53072: netbsd-8 regression: startx (nv driver) crashes system
The following reply was made to PR kern/53072; it has been noted by GNATS.
From: Roy Bixler <rcbixler%nyx.net@localhost>
Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost, netbsd-bugs%netbsd.org@localhost
Subject: Re: kern/53072: netbsd-8 regression: startx (nv driver) crashes
Date: Mon, 5 Mar 2018 07:55:19 -0700
On Mon, Mar 05, 2018 at 08:00:02AM +0000, matthew green wrote:
> The following reply was made to PR kern/53072; it has been noted by GNATS.
> From: matthew green <mrg%eterna.com.au@localhost>
> To: gnats-bugs%NetBSD.org@localhost, rcbixler%nyx.net@localhost
> Cc: kern-bug-people%netbsd.org@localhost, gnats-admin%netbsd.org@localhost,
> Subject: re: kern/53072: netbsd-8 regression: startx (nv driver) crashes system
> Date: Mon, 05 Mar 2018 18:57:19 +1100
> > _KERNEL_OPT_NARCNET(0,104,c011e2a5,8,c0fff385,0,104,c0f73de5,dabefc5c,da=
> befc40) a
> > t 0
> > __kernel_end(104,0,c0f73de5,dabefc5c,c2b6ed40,6,dabefce4,dabefc50,c0947c=
> > de5) at dabefc5c
> > vpanic(c0f73de5,dabefc5c,dabefcd8,c0120935,c0f73de5,dabefce4,dabefce4,1,=
> > ,13246) at vpanic+0x131
> > snprintf(c0f73de5,dabefce4,dabefce4,1,dabed2c0,13246,8,0,0,0) at snprint=
> > trap_tss() at trap_tss
> > --- trap via task gate ---
> > _KERNEL_OPT_BEEP_ONHALT_COUNT+0x2:
> this is from crash(8)? can you try gdb, see if it can trace
> through the trap and where it really is happening?
> this probably is some teardown issue, as it seems that X tries
> and then fails, and then we crash. can you try the vesa driver
> for now, it should have a reasonably performance until we
> figure this problem out.
I've run out of time for now, but I was able to confirm that a kernel
built from CVS as of 27 Feb. 2018 0900Z doesn't have the problem, but
a kernel build from CVS as of 27 Feb. 2018 1000Z does have the
problem. I also confirmed that I am unable to use X at all with the
latter. I tried the vesa driver and the wsfb driver with vesa mode
and those crash as well. I guess, if I want to use X, I'll be
restricted to using the 27 Feb. 2018 0900Z build or -current.
Roy Bixler <rcbixler%nyx.net@localhost>
"The fundamental principle of science, the definition almost, is this: the
sole test of the validity of any idea is experiment."
-- Richard P. Feynman
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