On Fri, Feb 10, 2017 at 03:41:46PM +0200, Mika Kuoppala wrote:
> Chris Wilson <[email protected]> writes:
> 
> > [12493.693827] WARNING: CPU: 1 PID: 14860 at 
> > drivers/gpu/drm/i915/intel_uncore.c:795 __unclaimed_reg_debug+0x5d/0x80 
> > [i915]
> > [12493.693868] Unclaimed read from register 0x1f0024
> > [12493.693905] Modules linked in: vgem i915 drm_kms_helper drm intel_gtt 
> > i2c_algo_bit syscopyarea sysfillrect sysimgblt fb_sys_fops prime_numbers 
> > intel_powerclamp crct10dif_pclmul crc32_pclmul crc32c_intel 
> > ghash_clmulni_intel cryptd lpc_ich i2c_i801 mfd_core video 
> > i2c_designware_platform i2c_designware_core i2c_core button autofs4 sd_mod 
> > ahci libahci libata scsi_mod [last unloaded: i915]
> > [12493.694039] CPU: 1 PID: 14860 Comm: intel-gpu-overl Tainted: G     U     
> >      4.10.0-rc7+ #11
> > [12493.694079] Hardware name: GIGABYTE GB-BXBT-1900/MZBAYAB-00, BIOS F8 
> > 03/02/2016
> > [12493.694121] Call Trace:
> > [12493.694169]  dump_stack+0x67/0x9d
> > [12493.694235]  __warn+0x117/0x140
> > [12493.694288]  warn_slowpath_fmt+0x4f/0x60
> > [12493.694344]  ? do_raw_spin_lock+0x116/0x180
> > [12493.694533]  ? check_for_unclaimed_mmio+0x98/0xe0 [i915]
> > [12493.694727]  __unclaimed_reg_debug+0x5d/0x80 [i915]
> > [12493.694923]  fwtable_read32+0x2c5/0x330 [i915]
> > [12493.695108]  i915_interrupt_info+0xd52/0xf80 [i915]
> > [12493.695302]  ? gen6_write16+0x310/0x310 [i915]
> > [12493.695357]  seq_read+0x187/0x710
> > [12493.695412]  full_proxy_read+0x75/0xc0
> > [12493.695472]  __vfs_read+0x5a/0x220
> > [12493.695524]  ? kmem_cache_free+0x6c/0x260
> > [12493.695577]  ? putname+0x97/0xa0
> > [12493.695629]  ? putname+0x97/0xa0
> > [12493.695682]  ? rcu_read_lock_sched_held+0xb8/0xd0
> > [12493.695735]  ? rw_verify_area+0x65/0x140
> > [12493.695787]  vfs_read+0xd1/0x1f0
> > [12493.695840]  SyS_read+0x62/0xc0
> > [12493.695893]  entry_SYSCALL_64_fastpath+0x1c/0xb1
> > [12493.695943] RIP: 0033:0x7f82dca99ba0
> > [12493.695985] RSP: 002b:00007ffc0bdfd4f8 EFLAGS: 00000246 ORIG_RAX: 
> > 0000000000000000
> > [12493.696031] RAX: ffffffffffffffda RBX: 00007ffc0be005a0 RCX: 
> > 00007f82dca99ba0
> > [12493.696073] RDX: 0000000000001fff RSI: 00007ffc0bdfd500 RDI: 
> > 000000000000001a
> > [12493.696115] RBP: ffffffff810fb639 R08: 302f6972642f6775 R09: 
> > 00007f82dca0999a
> > [12493.696157] R10: 00007f82dcd62760 R11: 0000000000000246 R12: 
> > ffff880069a17f98
> > [12493.696199] R13: 00007ffc0bdfd428 R14: 0000000000000003 R15: 
> > 00007ffc0bdfd428
> > [12493.696250]  ? trace_hardirqs_off_caller+0xd9/0x130
> > [12493.696300] ---[ end trace 52ccf4d39793cc59 ]---
> >
> > Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=99761
> > Signed-off-by: Chris Wilson <[email protected]>
> 
> Reviewed-by: Mika Kuoppala <[email protected]>

Thanks for the review,
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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