<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [CI] igt@* - dmesg-warn - *ERROR* Panel is unable to calculate any CRC after 6 vblanks | Unclaimed read from register 0x130090" href="https://bugs.freedesktop.org/show_bug.cgi?id=103337#c8">Comment # 8</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [CI] igt@* - dmesg-warn - *ERROR* Panel is unable to calculate any CRC after 6 vblanks | Unclaimed read from register 0x130090" href="https://bugs.freedesktop.org/show_bug.cgi?id=103337">bug 103337</a> from <a class="email" href="mailto:marta.lofstedt@intel.com" title="Marta Löfstedt <marta.lofstedt@intel.com>"> Marta Löfstedt</a> <pre>Note from: CI_DRM_3611 and all consecutive runs on GLK-shards, so far to CI_DRM_3617 <a href="https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3611/shard-glkb3/igt@debugfs_test@read_all_entries.html">https://intel-gfx-ci.01.org/tree/drm-tip/CI_DRM_3611/shard-glkb3/igt@debugfs_test@read_all_entries.html</a> hits: [ 139.108554] Unclaimed read from register 0x130090 [ 139.108666] WARNING: CPU: 1 PID: 1462 at drivers/gpu/drm/i915/intel_uncore.c:986 __unclaimed_reg_debug+0x3b/0x50 [i915] [ 139.108671] Modules linked in: vgem snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic i915 x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel snd_hda_intel snd_hda_codec snd_hwdep snd_hda_core snd_pcm r8169 mei_me mii mei prime_numbers i2c_hid pinctrl_geminilake pinctrl_intel [ 139.108800] CPU: 1 PID: 1462 Comm: debugfs_test Tainted: G U 4.15.0-rc7-CI-CI_DRM_3611+ #1 [ 139.108806] Hardware name: Intel Corp. Geminilake/GLK RVP1 DDR4 (05), BIOS GELKRVPA.X64.0062.B30.1708222146 08/22/2017 [ 139.108892] RIP: 0010:__unclaimed_reg_debug+0x3b/0x50 [i915] [ 139.108898] RSP: 0018:ffffc9000059bd38 EFLAGS: 00010092 [ 139.108908] RAX: 0000000000000025 RBX: 0000000000000000 RCX: 0000000000000002 [ 139.108914] RDX: 0000000080000002 RSI: ffffffff820ab3a7 RDI: 00000000ffffffff [ 139.108919] RBP: 0000000000130090 R08: 0000000000000000 R09: 0000000000000001 [ 139.108925] R10: ffffc9000059bcd0 R11: 0000000000000002 R12: 0000000000000001 [ 139.108930] R13: ffff8801695c0ca0 R14: 0000000000000000 R15: 0000000000000202 [ 139.108936] FS: 00007fbb4cd6da40(0000) GS:ffff88017fc80000(0000) knlGS:0000000000000000 [ 139.108942] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 139.108948] CR2: 000055921b94d2d8 CR3: 000000016a208000 CR4: 0000000000340ee0 [ 139.108953] Call Trace: [ 139.109046] fwtable_read32+0x214/0x290 [i915] [ 139.109131] i915_drpc_info+0x267/0x8c0 [i915] [ 139.109145] ? rcu_read_lock_sched_held+0x6f/0x80 [ 139.109162] seq_read+0xd8/0x3a0 [ 139.109176] ? debug_check_no_obj_freed+0x11f/0x230 [ 139.109190] full_proxy_read+0x4b/0x70 [ 139.109204] __vfs_read+0x1e/0x120 [ 139.109215] ? do_sys_open+0x197/0x1f0 [ 139.109226] ? do_sys_open+0x197/0x1f0 [ 139.109237] ? entry_SYSCALL_64_fastpath+0x5/0x89 [ 139.109248] vfs_read+0x9e/0x150 [ 139.109260] SyS_read+0x40/0xa0 [ 139.109274] entry_SYSCALL_64_fastpath+0x1c/0x89 [ 139.109281] RIP: 0033:0x7fbb4b2456d0 [ 139.109286] RSP: 002b:00007ffcd34b3888 EFLAGS: 00000246 [ 139.109315] Code: 3c 01 75 30 84 db 75 2c 45 84 e4 48 c7 c0 85 35 26 a0 48 c7 c6 7b 35 26 a0 48 0f 44 f0 89 ea 48 c7 c7 8e 35 26 a0 e8 b5 8c ed e0 <0f> ff 83 2d 4c bc 16 00 01 5b 5d 41 5c c3 0f 1f 80 00 00 00 00 [ 139.109629] ---[ end trace 8ffd6c56c54f09e5 ]--- i915_regs.h #define FORCEWAKE_ACK _MMIO(0x130090) I believe the backtrace is from: i915_debugfs.c -> static int gen6_drpc_info(struct seq_file *m) ... while (count++ < 50 && (I915_READ_NOTRACE(FORCEWAKE_ACK) & 1))</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are on the CC list for the bug.</li> <li>You are the assignee for the bug.</li> <li>You are the QA Contact for the bug.</li> </ul> </body> </html>