<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW - [i915] kernel warning hsw_unclaimed_reg_debug intel_uncore.c:619" href="https://bugs.freedesktop.org/show_bug.cgi?id=91960#c1">Comment # 1</a> on <a class="bz_bug_link bz_status_NEW " title="NEW - [i915] kernel warning hsw_unclaimed_reg_debug intel_uncore.c:619" href="https://bugs.freedesktop.org/show_bug.cgi?id=91960">bug 91960</a> from <a class="email" href="mailto:neggelandia@gmail.com" title="Sam Stenvall <neggelandia@gmail.com>"> Sam Stenvall</a> <pre>Just got this on my Thinkpad T450 running Linux 4.2.0-040200-generic (from the Ubuntu mainline kernels). The trace is ever so slightly different though (line 620 instead of 619): Sep 12 10:18:13 palinski kernel: ------------[ cut here ]------------ Sep 12 10:18:13 palinski kernel: WARNING: CPU: 0 PID: 18479 at /home/kernel/COD/linux/drivers/gpu/drm/i915/intel_uncore.c:620 hsw_unclaimed_reg_debug.isra.14+0x78/0xa0 [i915]() Sep 12 10:18:13 palinski kernel: Unclaimed register detected after writing to register 0x223a0 Sep 12 10:18:13 palinski kernel: Modules linked in: btrfs xor raid6_pq ufs qnx4 hfsplus hfs minix ntfs msdos jfs xfs libcrc32c cpuid ppp_mppe ppp_async crc_ccitt pci_stub vboxpci(OE) vboxneta Sep 12 10:18:13 palinski kernel: rtsx_pci_ms cfg80211 snd_hda_codec thinkpad_acpi drm memstick snd_hda_core snd_hwdep nvram snd_pcm i2c_algo_bit snd_seq_device mei_me lpc_ich mei snd_timer s Sep 12 10:18:13 palinski kernel: CPU: 0 PID: 18479 Comm: JobWorker Tainted: G W OE 4.2.0-040200-generic #201508301530 Sep 12 10:18:13 palinski kernel: Hardware name: LENOVO 20BVCTO1WW/20BVCTO1WW, BIOS JBET51WW (1.16 ) 07/08/2015 Sep 12 10:18:13 palinski kernel: ffffffffc0496c50 ffff88045dc03c88 ffffffff817a1b43 0000000000000000 Sep 12 10:18:13 palinski kernel: ffff88045dc03cd8 ffff88045dc03cc8 ffffffff8107719a 0000000000000082 Sep 12 10:18:13 palinski kernel: ffff88044a370078 ffff88044a3702c0 00000000000223a0 ffff88044a370078 Sep 12 10:18:13 palinski kernel: Call Trace: Sep 12 10:18:13 palinski kernel: <IRQ> [<ffffffff817a1b43>] dump_stack+0x45/0x57 Sep 12 10:18:13 palinski kernel: [<ffffffff8107719a>] warn_slowpath_common+0x8a/0xc0 Sep 12 10:18:13 palinski kernel: [<ffffffff81077216>] warn_slowpath_fmt+0x46/0x50 Sep 12 10:18:13 palinski kernel: [<ffffffffc041adc8>] hsw_unclaimed_reg_debug.isra.14+0x78/0xa0 [i915] Sep 12 10:18:13 palinski kernel: [<ffffffffc041efb6>] gen8_write32+0xf6/0x1b0 [i915] Sep 12 10:18:13 palinski kernel: [<ffffffffc0412ece>] intel_lrc_irq_handler+0x19e/0x230 [i915] Sep 12 10:18:13 palinski kernel: [<ffffffffc0409a34>] gen8_gt_irq_handler+0x224/0x250 [i915] Sep 12 10:18:13 palinski kernel: [<ffffffffc0409adc>] gen8_irq_handler+0x7c/0x530 [i915] Sep 12 10:18:13 palinski kernel: [<ffffffff814b542a>] ? add_interrupt_randomness+0x3a/0x1c0 Sep 12 10:18:13 palinski kernel: [<ffffffff810cdb79>] handle_irq_event_percpu+0x39/0x180 Sep 12 10:18:13 palinski kernel: [<ffffffff810cdd09>] handle_irq_event+0x49/0x70 Sep 12 10:18:13 palinski kernel: [<ffffffff810d0e4d>] handle_edge_irq+0x9d/0x150 Sep 12 10:18:13 palinski kernel: [<ffffffff810171c5>] handle_irq+0x25/0x40 Sep 12 10:18:13 palinski kernel: [<ffffffff817aba31>] do_IRQ+0x51/0xe0 Sep 12 10:18:13 palinski kernel: [<ffffffff817a99ab>] common_interrupt+0x6b/0x6b Sep 12 10:18:13 palinski kernel: <EOI> Sep 12 10:18:13 palinski kernel: ---[ end trace 79deec7e25f6469c ]---</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>