On reboot, one of my test boxes now triggers the following warning:
------------[ cut here ]------------ RPM raw-wakeref not held WARNING: CPU: 4 PID: 1 at drivers/gpu/drm/i915/intel_runtime_pm.h:106 gen6_write32+0x1bc/0x2a0 [i915] Modules linked in: ebtable_filter ebtables bridge stp llc ip6t_REJECT nf_reject_ipv6 vsock vmw_vmci xt_state xt_conntrack nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip6table_filter ip6_tables snd_hda_codec_hdmi snd_hda_codec_realtek snd_hda_codec_generic le 15 snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hwdep i2c_algo_bit snd_hda_core snd_seq intel_rapl_msr snd_seq_device intel_rapl_common snd_pcm x86_pkg_temp_thermal intel_powerclamp snd_timer snd coretemp kvm_intel soundcore kvm mei_wdt irqbypass joydev _pmc_bxt hp_wmi wmi_bmof sparse_keymap rfkill iTCO_vendor_support crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel drm_kms_helper i2c_i801 cec drm rapl intel_cstate intel_uncore mei_me i2c_smbus e1000e tpm_infineon wmi serio_raw mei video lpc_i
CPU: 4 PID: 1 Comm: systemd-shutdow Not tainted 5.9.0-rc4-test+ #861 Hardware name: Hewlett-Packard HP Compaq Pro 6300 SFF/339A, BIOS K01 v03.03 07/14/2016 RIP: 0010:gen6_write32+0x1bc/0x2a0 [i915] Code: 5d 82 e0 0f 0b e9 b5 fe ff ff 80 3d 95 6b 22 00 00 0f 85 b2 fe ff ff 48 c7 c7 04 d2 a4 c0 c6 05 81 6b 22 00 01 e8 f6 5c 82 e0 <0f> 0b e9 98 fe ff ff 80 3d 6d 6b 22 00 00 0f 85 95 fe ff ff 48 c7 RSP: 0018:ffffb9c1c002fd08 EFLAGS: 00010296 RAX: 0000000000000018 RBX: ffff99aec8881010 RCX: ffff99aeda400000 RDX: 0000000000000000 RSI: ffffffffa115d9ef RDI: ffffffffa115d9ef RBP: 0000000000044004 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000001 R14: 00000000ffffffff R15: 0000000000000000 FS: 00007f91257a9940(0000) GS:ffff99aeda400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9126829400 CR3: 00000001088f0006 CR4: 00000000001706e0 Call Trace: gen3_irq_reset+0x2e/0xd0 [i915] intel_irq_reset+0x59/0x6a0 [i915] intel_runtime_pm_disable_interrupts+0xe/0x30 [i915] i915_driver_shutdown+0x2e/0x40 [i915] pci_device_shutdown+0x34/0x60 device_shutdown+0x15d/0x1b3 kernel_restart+0xe/0x30 __do_sys_reboot+0x1d7/0x210 ? vfs_writev+0x9d/0xe0 ? syscall_enter_from_user_mode+0x1d/0x70 ? trace_hardirqs_on+0x2c/0xe0 do_syscall_64+0x33/0x40 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f912675f2d7 Code: 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 90 f3 0f 1e fa 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 01 c3 48 8b 15 81 8b 0c 00 f7 d8 64 89 02 b8 RSP: 002b:00007ffeca28e148 EFLAGS: 00000206 ORIG_RAX: 00000000000000a9 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f912675f2d7 RDX: 0000000001234567 RSI: 0000000028121969 RDI: 00000000fee1dead RBP: 00007ffeca28e3d0 R08: 000000000000000a R09: 0000000000000000 R10: 0000000000000232 R11: 0000000000000206 R12: 0000000000000001 R13: 0000000000000000 R14: 0000000000000000 R15: 00007ffeca28e4b8 ---[ end trace 2ed17eabd3ab6938 ]--- ------------[ cut here ]------------
The bisect came to this commit:
fe0f1e3bfdfeb53e18f1206aea4f40b9bd1f291c ("drm/i915: Shut down displays gracefully on reboot")
Which makes sense, as it happens on shutdown.
-- Steve