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Date:      Wed, 13 Nov 2019 09:10:06 +0100
From:      Hans Petter Selasky <hps@selasky.org>
To:        sgk@troutmask.apl.washington.edu
Cc:        Mark Johnston <markj@freebsd.org>, freebsd-current@freebsd.org, freebsd-x11@freebsd.org
Subject:   Re: unkillable process consuming 100% cpu
Message-ID:  <1de2773b-3f54-472b-65a1-0f1c297aab60@selasky.org>
In-Reply-To: <20191113003001.GA94074@troutmask.apl.washington.edu>
References:  <20191107202919.GA4565@troutmask.apl.washington.edu> <20191107203223.GF16978@raichu> <20191108220935.GA856@troutmask.apl.washington.edu> <6a4e5993-623a-ebaa-8180-e11c7d48e706@selasky.org> <20191112173136.GA69344@troutmask.apl.washington.edu> <0961307a-8b14-8240-0466-6bb4edf52788@selasky.org> <20191113003001.GA94074@troutmask.apl.washington.edu>

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On 2019-11-13 01:30, Steve Kargl wrote:
> On Tue, Nov 12, 2019 at 06:48:22PM +0100, Hans Petter Selasky wrote:
>> On 2019-11-12 18:31, Steve Kargl wrote:
>>>> Can you open the radeonkms.ko in gdb83 from ports and type:
>>>>
>>>> l *(radeon_gem_busy_ioctl+0x30)
>>>>
>>> % /boot/modules/radeonkms.ko
>>> (gdb) l  *(radeon_gem_busy_ioctl+0x30)
>>> 0xa12b0 is in radeon_gem_busy_ioctl (/usr/ports/graphics/drm-current-kmod/work/kms-drm-2d2852e/drivers/gpu/drm/radeon/radeon_gem.c:453).
>>> 448     /usr/ports/graphics/drm-current-kmod/work/kms-drm-2d2852e/drivers/gpu/drm/radeon/radeon_gem.c: No such file or directory.
>>> (gdb)
>>
>> Like expected.
>>
> 
> I installed the 2nd seqlock.diff, rebuilt drm-current-kmod-4.16.g20191023,
> rebooting, and have been pounding on the system with workloads that are
> similar to what the system was doing during the lockups.  So far, I
> cannot ge the system lock-up.  Looks like your patch fixes (or at
> least helps).  Thanks for taking a look at the problem.
> 

Can you apply the kdb.diff on top and check dmesg for prints?

--HPS



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