Hi Rocko, Thanks for the bug report. Please report bugs always on the public mailing list so that all interest people can join in (also I'm travelling atm, so I can't do much). Afaics we're hitting BUG_ON(seqno == 0) in wait_requst. Unfortunately you've cut out the backtrace from the kernel oops, so I can't tell anything more. Please add the full dmesg and the usual details about your macine. Yours, Daniel On Fri, Dec 9, 2011 at 00:11, Rocko Requin <rockorequin at hotmail.com> wrote: > Hi Daniel, > > Since I applied commit eb1711bb94991e93669c5a1b5f84f11be2d51ea1 (drm/i915: > fix infinite recursion on unbind due to ilk vt-d w/a) to my kernel yesterday > afternoon, I've had the kernel lock up completely three times on me, so I'm > assuming it might have been the cause. (I was previously using a kernel > compiled from git on Dec 4th without problems.) > > The last lockup showed this in the syslog: > > Dec? 9 06:23:15 sierra kernel: [44486.289428] kernel BUG at > drivers/gpu/drm/i915/i915_gem.c:1952! > Dec? 9 06:23:15 sierra kernel: [44486.289460] invalid opcode: 0000 [#1] SMP > ... > Dec? 9 06:23:15 sierra kernel: [44486.289844] RIP: > 0010:[<ffffffffa02eccd3>]? [<ffffffffa02eccd3>] > i915_wait_request+0x563/0x580 [i915] > > I have attached a longer version of the log (but note that it was truncated > by the crash). > > I am booting the kernel with i915.i915_enable_rc6=1 but I didn't have any > lockup issues until yesterday. > > Thanks, > rocko -- Daniel Vetter daniel.vetter at ffwll.ch - +41 (0) 79 365 57 48 - http://blog.ffwll.ch
