<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [NV110] bus: MMIO read of 00000000 FAULT at 619444 [ IBUS ]" href="https://bugs.freedesktop.org/show_bug.cgi?id=111392#c1">Comment # 1</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [NV110] bus: MMIO read of 00000000 FAULT at 619444 [ IBUS ]" href="https://bugs.freedesktop.org/show_bug.cgi?id=111392">bug 111392</a> from <a class="email" href="mailto:gius-italy@live.it" title="Giuseppe Lumia <gius-italy@live.it>"> Giuseppe Lumia</a> <pre>I found out something new about the bug. Looks like the read on 0x619444 is called by the function gm107_gr_init_bios_2 in <a href="https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/drivers/gpu/drm/nouveau/nvkm/engine/gr/gm107.c?h=v5.2.8#n309">https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/drivers/gpu/drm/nouveau/nvkm/engine/gr/gm107.c?h=v5.2.8#n309</a>. I got nvapeek to work on my system ( I had to disable kernel_lockdown since I was getting "PCI init failure" ) and this is the output: ./nvapeek 0x619444 00619444: badf1301 The curious thing is that if I analyze all the addresses preceding and following 0x619444 I get only a list of badf1301 and badf1100 (so a "small error" on the offset is to exclude). Unfortunately I have no clue what this address 0x619444 refers to and why the function gm107_gr_init_bios_2 was added to the source code. I also found out the commit which added this code: <a href="https://github.com/torvalds/linux/commit/0f78acc86bbfc60cdaffd4eb03e4a35b28397cbb">https://github.com/torvalds/linux/commit/0f78acc86bbfc60cdaffd4eb03e4a35b28397cbb</a></pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>