> -----Original Message----- > From: Justin Piszcz [mailto:jpis...@lucidpixels.com] > Sent: Friday, February 27, 2015 10:54 AM > To: linux-kernel@vger.kernel.org > Subject: RE: 3.19 kernel: BUG: unable to handle kernel NULL pointer > dereference > > > > > -----Original Message----- > > From: Justin Piszcz [mailto:jpis...@lucidpixels.com] > > Sent: Friday, February 27, 2015 9:54 AM > > To: linux-kernel@vger.kernel.org > > Subject: 3.19 kernel: BUG: unable to handle kernel NULL pointer > dereference > > > > Hello, > > > > With kernel 3.15, I do not recall having any issues, with 3.19, I am > getting > > a kernel crash when I copy files over NFS from machine A to B. > > Is this a known issue? > > > > I suspect it has to do something with this: > > Feb 27 09:31:20 remote-host [ 15.745342] dmar: DRHD: handling fault > status > > reg 2 > > Feb 27 09:31:20 remote-host [ 15.745361] dmar: DMAR:[DMA Read] > Request > > device [04:00.0] fault addr 0 #012[ 15.745361] DMAR:[fault reason 06] > PTE > > Read access is not set > > > > [ .. ] > > Here is another crash with debugging enabled: >
[ .. ] https://bbs.archlinux.org/viewtopic.php?id=176398 https://forums.opensuse.org/showthread.php/497436-DMAR-errors-with-VT-d-enab led I disabled Virtualization in the kernel and this works around the problem. Justin. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
