Re: new Intel driver hangs

[Patrick Welche <prlw1%cam.ac.uk@localhost>]

On Tue, Jan 27, 2015 at 03:50:00PM +0100, Manuel Bouyer wrote:
> On Fri, Jan 23, 2015 at 03:47:15PM +0100, Manuel Bouyer wrote:
> > Hello,
> > since the xorg Intel driver has been updated on 7.0_BETA, the X server
> > occasionally hangs on vmem: 
> > yquem# ps axlww | grep Xorg
> >     0 11377 12013   95  85  0 4315860  37652 vmem    Dl   ?      3:10.66 /usr/X11R7/bin/X :0 -noretro -auth /local/armandeche1/bouyer/.serverauth.11611 (Xorg)
> > 
> > 
> > I tried a reboot -d but didn't get a core dump ...
> 
> Here is what I could get from 'crash -M /dev/mem' while Xorg is hung:
> crash> tr/a 0xfffffe821e49a280
> trace: pid 2096 lid 1 at 0xfffffe810f507b70
> sleepq_block() at sleepq_block+0xa2
> cv_wait() at cv_wait+0x116
> vmem_xalloc() at vmem_xalloc+0x611
> vmem_alloc() at vmem_alloc+0x11b
> drm_vma_offset_add() at drm_vma_offset_add+0x44
> i915_gem_mmap_gtt() at i915_gem_mmap_gtt+0x115
> drm_ioctl() at drm_ioctl+0x122
> sys_ioctl() at sys_ioctl+0x17e
> syscall() at syscall+0x9a
> --- syscall (number 54) ---
> 7f7ff42d0a3a:
> 
> Tell me if I can provide additionnal information

Maybe another manifestation of PR xsrc/49553?

Cheers,

Patrick