[Bug 104512] [i915]Failed to release pages: bind_count=1, pages_pin_count=1, pin_display=0

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=104512

--- Comment #16 from FedeX <fede at fpaterno.com> ---
False alarm, still happening in 4.15.3 for me too:

[   35.528776] ------------[ cut here ]------------
[   35.528778] Failed to release pages: bind_count=1, pages_pin_count=1,
pin_global=0
[   35.528842] WARNING: CPU: 1 PID: 202 at
/home/kernel/COD/linux/drivers/gpu/drm/i915/i915_gem_userptr.c:89
cancel_userptr+0xe8/0xf0 [i915]
[   35.528843] Modules linked in: rfcomm ipt_MASQUERADE nf_nat_masquerade_ipv4
nf_conntrack_netlink nfnetlink xfrm_user xfrm_algo iptable_nat nf_nat_ipv4
br_netfilter bridge stp llc overlay ccm ebtable_filter ebtables pci_stub
vboxpci(OE) vboxnetadp(OE) vboxnetflt(OE) vboxdrv(OE) bnep binfmt_misc dm_crypt
ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 xt_hl ip6t_rt intel_rapl
x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel nf_conntrack_ipv6
cdc_mbim nf_defrag_ipv6 kvm cdc_wdm cdc_acm cdc_ncm ipt_REJECT nf_reject_ipv4
nf_log_ipv4 nf_log_common xt_LOG usbnet irqbypass uvcvideo mii
videobuf2_vmalloc btusb videobuf2_memops xt_limit videobuf2_v4l2 xt_tcpudp
xt_addrtype btrtl videobuf2_core crct10dif_pclmul btbcm crc32_pclmul videodev
btintel media ghash_clmulni_intel pcbc arc4 bluetooth ecdh_generic aesni_intel
[   35.528882]  snd_hda_codec_realtek snd_hda_codec_hdmi snd_hda_codec_generic
aes_x86_64 crypto_simd glue_helper cryptd intel_cstate snd_hda_intel
intel_rapl_perf snd_hda_codec snd_hda_core snd_hwdep snd_seq_midi snd_pcm
snd_seq_midi_event input_leds iwlmvm joydev mac80211 serio_raw snd_rawmidi
thinkpad_acpi nvram iwlwifi wmi_bmof intel_pch_thermal snd_seq lpc_ich
snd_seq_device nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack cfg80211 snd_timer
snd mei_me soundcore shpchp mei mac_hid ip6table_filter ip6_tables
nf_conntrack_netbios_ns nf_conntrack_broadcast nf_nat_ftp nf_nat
nf_conntrack_ftp nf_conntrack parport_pc iptable_filter ppdev ip_tables
x_tables lp parport autofs4 raid10 raid456 async_raid6_recov async_memcpy
async_pq async_xor async_tx xor raid6_pq libcrc32c raid1 raid0 multipath linear
hid_logitech_hidpp
[   35.528918]  hid_logitech_dj usbhid hid i915 i2c_algo_bit drm_kms_helper
syscopyarea psmouse sysfillrect sysimgblt fb_sys_fops e1000e ahci drm libahci
ptp pps_core wmi video
[   35.528931] CPU: 1 PID: 202 Comm: kworker/u16:2 Tainted: G           OE   
4.15.3-041503-generic #201802120730
[   35.528932] Hardware name: LENOVO 20BSCTO1WW/20BSCTO1WW, BIOS N14ET39W (1.17
) 06/29/2017
[   35.528957] Workqueue: i915-userptr-release cancel_userptr [i915]
[   35.528978] RIP: 0010:cancel_userptr+0xe8/0xf0 [i915]
[   35.528979] RSP: 0018:ffffac4f410e7e60 EFLAGS: 00010282
[   35.528981] RAX: 0000000000000000 RBX: ffff92ce9c282100 RCX:
0000000000000006
[   35.528982] RDX: 0000000000000007 RSI: 0000000000000082 RDI:
ffff92ceadc56450
[   35.528983] RBP: ffffac4f410e7e78 R08: 0000000000000001 R09:
0000000000000369
[   35.528984] R10: ffffe13308795a00 R11: 0000000000000000 R12:
ffff92ce9c2822a8
[   35.528985] R13: 0000000000000000 R14: ffff92cea5410800 R15:
ffff92ce99cf1c00
[   35.528986] FS:  0000000000000000(0000) GS:ffff92ceadc40000(0000)
knlGS:0000000000000000
[   35.528988] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[   35.528989] CR2: 00007efdb0017028 CR3: 00000000a380a003 CR4:
00000000003606e0
[   35.528990] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[   35.528991] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7:
0000000000000400
[   35.528992] Call Trace:
[   35.528997]  process_one_work+0x1ef/0x410
[   35.528999]  worker_thread+0x32/0x410
[   35.529001]  kthread+0x121/0x140
[   35.529003]  ? process_one_work+0x410/0x410
[   35.529004]  ? kthread_create_worker_on_cpu+0x70/0x70
[   35.529007]  ret_from_fork+0x35/0x40
[   35.529008] Code: bf 46 ff ff eb c9 8b 93 c8 01 00 00 8b 8b a4 01 00 00 48
c7 c7 f0 37 69 c0 8b b3 9c 01 00 00 c6 05 05 37 10 00 01 e8 38 f0 0c fc <0f> ff
eb bc 0f 1f 40 00 0f 1f 44 00 00 55 ba 08 00 00 00 48 89 
[   35.529040] ---[ end trace 3126a07da70dfe43 ]---
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