Date: Wed, 16 Jun 2021 08:28:20 -0700 From: Neel Chauhan <nc@FreeBSD.org> To: Hans Petter Selasky <hps@selasky.org> Cc: current@freebsd.org Subject: Re: Kernel/driver hacking: panic: Assertion vm_object_busied((m->object)) failed at /usr/src/sys/vm/vm_page.c:5455 Message-ID: <faa2032dde20ffbdc012bda307bce1f0@FreeBSD.org> In-Reply-To: <b76f0409-1104-23bc-827b-76525a32bdc3@selasky.org> References: <e542a0c737f24d15df0fadd985e94938@neelc.org> <b76f0409-1104-23bc-827b-76525a32bdc3@selasky.org>
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Hi, On 2021-06-16 00:35, Hans Petter Selasky wrote: > Do you have the full backtrace? Yes. I have attached a stack trace in the previous email, but if you didn't get it, I have uploaded it to GitHub: https://gist.github.com/neelchauhan/437bd10239f84c563aafb37ab440029a > Doesn't this code work in the current DRM - kmod? What changed? Did > you perhaps miss a patch? I think there is new code with Linux 5.6 which changes how this is done. I have been attempting to make a FreeBSD equivalent, but it panics. It is **not** from missing Linux commits since I believe I added them all. The code in my GH repo: https://github.com/neelchauhan/drm-kmod/blob/5.7-wip/drivers/gpu/drm/i915/gem/i915_gem_mman.c#L346 > --HPS -Neel (nc@)
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