Hello,
Yesterday, as usual I ran xlock before the night. In the morning, I
typed a key to wake it up, it didn't. I had to reboot. I could however
read in the logs:
Apr 14 05:00:13 type kernel: [33976.116204] WARNING: CPU: 2 PID: 63 at
drivers/gpu/drm/i915/intel_uncore.c:69 assert_device_not_suspended+0x45/0x4e
[i915]()
Apr 14 05:00:13 type kernel: [33976.116206] Device suspended
Apr 14 05:00:13 type kernel: [33976.116206] Modules linked in: tun xt_REDIRECT
nf_nat_redirect xt_tcpudp ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat
nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack ip_tables
x_tables binfmt_misc nfsd cpufreq_powersave auth_rpcgss cpufreq_stats
oid_registry nfs_acl cpufreq_userspace lockd cpufreq_conservative bbswitch(O)
grace sunrpc joydev hid_generic usbhid hid cdc_mbim cdc_ncm usbnet mii cdc_acm
cdc_wdm arc4 brcmsmac cordic brcmutil b43 nls_utf8 nls_cp437 mac80211 vfat fat
cfg80211 x86_pkg_temp_thermal i915 kvm_intel kvm snd_hda_codec_hdmi ssb
rng_core pcmcia pcmcia_core crct10dif_pclmul crc32_pclmul ghash_clmulni_intel
aesni_intel aes_x86_64 dell_wmi lrw sparse_keymap gf128mul drm_kms_helper
dell_laptop glue_helper rfkill ablk_helper cryptd drm psmouse dcdbas evdev
serio_raw bcma i2c_i801 acpi_cpufreq tpm_tis wmi i2c_algo_bit tpm i2c_core
8250_fintek video ac battery processor button snd_hda_codec_idt
snd_hda_codec_generic ledtrig_timer ledtrig_oneshot ledtrig_heartbeat
ledtrig_default_on snd_hda_intel snd_hda_controller snd_hda_codec snd_hwdep
snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore coretemp ohci_hcd
ledtrig_backlight pcspkr i8k firewire_sbp2 firewire_core crc_itu_t loop fuse
parport_pc ppdev lp parport autofs4 microcode crc32c_intel ehci_pci ehci_hcd
sdhci_pci sr_mod sdhci cdrom sg mmc_core usbcore e1000e ptp usb_common pps_core
thermal thermal_sys
Apr 14 05:00:13 type kernel: [33976.116266] CPU: 2 PID: 63 Comm: kswapd0
Tainted: G O4.0.0 #87
Apr 14 05:00:13 type kernel: [33976.116267] Hardware name: Dell Inc. Latitude
E6420/ , BIOS A14 07/11/2012
Apr 14 05:00:13 type kernel: [33976.116268] 0009
8144544b 8800b1313a88
Apr 14 05:00:13 type kernel: [33976.116270] 8104a9bc 0002
a0848b37 ea00026dffa0
Apr 14 05:00:13 type kernel: [33976.116272] 8801388b 00100028
8801388b0068 0010002c
Apr 14 05:00:13 type kernel: [33976.116274] Call Trace:
Apr 14 05:00:13 type kernel: [33976.116280] [8144544b] ?
dump_stack+0x40/0x50
Apr 14 05:00:13 type kernel: [33976.116284] [8104a9bc] ?
warn_slowpath_common+0x98/0xb0
Apr 14 05:00:13 type kernel: [33976.116295] [a0848b37] ?
assert_device_not_suspended+0x45/0x4e [i915]
Apr 14 05:00:13 type kernel: [33976.116297] [8104aa19] ?
warn_slowpath_fmt+0x45/0x4a
Apr 14 05:00:13 type kernel: [33976.116308] [a0848b37] ?
assert_device_not_suspended+0x45/0x4e [i915]
Apr 14 05:00:13 type kernel: [33976.116317] [a0849186] ?
gen6_write32+0x32/0x83 [i915]
Apr 14 05:00:13 type kernel: [33976.116328] [a0830772] ?
i915_gem_write_fence+0x270/0x46d [i915]
Apr 14 05:00:13 type kernel: [33976.116337] [a08309af] ?
i915_gem_object_update_fence+0x40/0xa6 [i915]
Apr 14 05:00:13 type kernel: [33976.116346] [a0830ab7] ?
i915_gem_object_put_fence+0xa2/0xac [i915]
Apr 14 05:00:13 type kernel: [33976.116355] [a0830b65] ?
i915_vma_unbind+0xa4/0x1a6 [i915]
Apr 14 05:00:13 type kernel: [33976.116364] [a0830e7e] ?
i915_gem_shrink+0x11e/0x178 [i915]
Apr 14 05:00:13 type kernel: [33976.116373] [a0831597] ?
i915_gem_shrinker_scan+0x60/0x82 [i915]
Apr 14 05:00:13 type kernel: [33976.116376] [810ef6ad] ?
shrink_slab.part.53.constprop.71+0x1a6/0x2ac
Apr 14 05:00:13 type kernel: [33976.116379] [810f1a38] ?
shrink_zone+0x6b/0x131
Apr 14 05:00:13 type kernel: [33976.116381] [810f26ca] ?
kswapd+0x57a/0x740
Apr 14 05:00:13 type kernel: [33976.116383] [810f2150] ?
zone_reclaim+0x1cb/0x1cb
Apr 14 05:00:13 type kernel: [33976.116386] [81060503] ?
kthread+0xab/0xb3
Apr 14 05:00:13 type kernel: [33976.116388] [81060458] ?
__kthread_parkme+0x5d/0x5d
Apr 14 05:00:13 type kernel: [33976.116389] [81448d58] ?
ret_from_fork+0x58/0x90
Apr 14 05:00:13 type kernel: [33976.116391] [81060458] ?
__kthread_parkme+0x5d/0x5d
Apr 14 05:00:13 type kernel: [33976.116392] ---[ end trace de34697426b2c759 ]---
So it seems it's the reclaiming that triggered an i915 operation while
the graphic card was suspended.
It's probably worth mentioning that I use on my i915 card:
echo auto /sys/bus/pci/devices/:00:02.0/power/control
In the following days, I'll be trying the attached patch.
Samuel
--- a/drivers/gpu/drm/i915/i915_gem.c
+++ b/drivers/gpu/drm/i915/i915_gem.c
@@ -5258,6 +5258,11 @@ i915_gem_shrinker_scan(struct shrinker *
if
