[12493.693616] ------------[ cut here ]------------ [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 ]---
commit 4f4631af8faf791a60264cf028a16d61804414c8 Author: Chris Wilson <chris@chris-wilson.co.uk> Date: Fri Feb 10 13:36:32 2017 +0000 drm/i915/byt: Take powerwell for reading PIPESTAT in debugfs
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