Hi Joel,
That seems like a genuine bug. Could you file it at the i915 bug tracker with all the requested information to make sure we can take a look at it:
https://gitlab.freedesktop.org/drm/intel/-/wikis/How-to-file-i915-bugs
Are you able to try different kernel versions to bisect which kernel version/commit introduced the WARN?
Regards, Joonas
Quoting Bjorn Helgaas (2021-06-22 00:51:32)
[+cc Joel (reporter)]
On Mon, Jun 21, 2021 at 04:50:14PM -0500, Bjorn Helgaas wrote:
----- Forwarded message from bugzilla-daemon@bugzilla.kernel.org -----
Date: Mon, 21 Jun 2021 02:50:09 +0000 From: bugzilla-daemon@bugzilla.kernel.org To: bjorn@helgaas.com Subject: [Bug 213519] New: WARNING on system reboot in: drivers/gpu/drm/i915/intel_runtime_pm.c:635 intel_runtime_pm_driver_release Message-ID: <bug-213519-41252@https.bugzilla.kernel.org/>
https://bugzilla.kernel.org/show_bug.cgi?id=213519
Bug ID: 213519 Summary: WARNING on system reboot in: drivers/gpu/drm/i915/intel_runtime_pm.c:635 intel_runtime_pm_driver_release Product: Drivers Version: 2.5 Kernel Version: 5.12.12 Hardware: x86-64 OS: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: PCI Assignee: drivers_pci@kernel-bugs.osdl.org Reporter: j-comm@westvi.com Regression: NoCreated attachment 297517 --> https://bugzilla.kernel.org/attachment.cgi?id=297517&action=edit Contents of 'warning' stack trace, etc.
As mentioned in summary - warning message in this routine at system reboot. Try as I might, I cannot include the text of the warning directly here in the description without losing carriage returns, so I include it as a text attachment.
----- End forwarded message -----
[Attachment contents below]
[ 239.019148] ------------[ cut here ]------------ [ 239.024226] i915 0000:00:02.0: i915 raw-wakerefs=1 wakelocks=1 on cleanup [ 239.031561] WARNING: CPU: 4 PID: 2484 at drivers/gpu/drm/i915/intel_runtime_pm.c:635 intel_runtime_pm_driver_release+0x4f/0x60 [ 239.043974] Modules linked in: mei_wdt x86_pkg_temp_thermal ghash_clmulni_intel mei_me mei cryptd [ 239.053656] CPU: 4 PID: 2484 Comm: reboot Not tainted 5.12.12 #1 [ 239.060236] Hardware name: To Be Filled By O.E.M. To Be Filled By O.E.M./NUC-8665UE, BIOS P1.50 06/04/2021 [ 239.070766] RIP: 0010:intel_runtime_pm_driver_release+0x4f/0x60 [ 239.077256] Code: 10 4c 8b 6f 50 4d 85 ed 75 03 4c 8b 2f e8 59 8f 11 00 41 89 d8 44 89 e1 4c 89 ea 48 89 c6 48 c7 c7 f8 25 7d b0 e8 06 e8 67 00 <0f> 0b 5b 41 5c 41 5d 5d c3 0f 1f 84 00 00 00 00 00 55 48 89 e5 48 [ 239.097700] RSP: 0018:ffffb8c682f3bd30 EFLAGS: 00010286 [ 239.103422] RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffffb0af01e8 [ 239.111185] RDX: 0000000000000000 RSI: 00000000ffffdfff RDI: ffffffffb0a401e0 [ 239.118850] RBP: ffffb8c682f3bd48 R08: 0000000000000000 R09: ffffb8c682f3bb08 [ 239.126617] R10: ffffb8c682f3bb00 R11: ffffffffb0b20228 R12: 0000000000000001 [ 239.134390] R13: ffff978680d114b0 R14: ffff97868197eae8 R15: 00000000fee1dead [ 239.142203] FS: 00007f741a182580(0000) GS:ffff9789dc500000(0000) knlGS:0000000000000000 [ 239.151044] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 239.157318] CR2: 000000000169f4c8 CR3: 000000019cf14003 CR4: 00000000003706e0 [ 239.165098] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 239.172874] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 239.180658] Call Trace: [ 239.183346] i915_driver_shutdown+0xcf/0xe0 [ 239.187920] i915_pci_shutdown+0x10/0x20 [ 239.192181] pci_device_shutdown+0x35/0x60 [ 239.196629] device_shutdown+0x156/0x1b0 [ 239.200827] __do_sys_reboot.cold+0x2f/0x5b [ 239.205410] __x64_sys_reboot+0x16/0x20 [ 239.209586] do_syscall_64+0x38/0x50 [ 239.213399] entry_SYSCALL_64_after_hwframe+0x44/0xae [ 239.218837] RIP: 0033:0x7f741a0a9bc3 [ 239.222740] Code: 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 89 fa be 69 19 12 28 bf ad de e1 fe b8 a9 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 05 c3 0f 1f 40 00 48 8b 15 71 c2 0c 00 f7 d8 [ 239.243228] RSP: 002b:00007ffcc2a16488 EFLAGS: 00000206 ORIG_RAX: 00000000000000a9 [ 239.251503] RAX: ffffffffffffffda RBX: 00007ffcc2a165d8 RCX: 00007f741a0a9bc3 [ 239.259304] RDX: 0000000001234567 RSI: 0000000028121969 RDI: 00000000fee1dead [ 239.267105] RBP: 0000000000000004 R08: 0000000000000000 R09: 000000000169e2e0 [ 239.274926] R10: fffffffffffffd06 R11: 0000000000000206 R12: 0000000000000000 [ 239.282719] R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000001 [ 239.290433] ---[ end trace cd9d07db38ec6618 ]---