[Bug 106993] general protection fault in mutex_lock / drm_mode_object_unregister when unloading amdgpu

[Bug 106993] general protection fault in mutex_lock / drm_mode_object_unregister when unloading amdgpu

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 4903 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=106993

            Bug ID: 106993
           Summary: general protection fault in mutex_lock /
                    drm_mode_object_unregister when unloading amdgpu
           Product: DRI
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: DRM/AMDgpu
          Assignee: dri-devel@lists.freedesktop.org
          Reporter: freedesktop@thecybershadow.net

I'm trying to unload amdgpu so that I can pass it to a VM using VFIO. After
stopping Xorg, unbinding framebuffer etc. amdgpu module shows 0 users, however
"modprobe -r amdgpu" hangs, and this appears in dmesg:

[  992.692232] general protection fault: 0000 [#1] PREEMPT SMP PTI
[  992.692237] Modules linked in: dm_mod ccm fuse xt_nat vhost_net vhost tap
xt_CHECKSUM iptable_mangle xt_conntrack ipt_REJECT nf_reject_ipv4 xt_tcpudp
devlink ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter bnep
uinput it87 hwmon_vid snd_hda_codec_hdmi sit tunnel4 ip_tunnel nls_iso8859_1
8021q mrp nls_cp437 vfat fat ipt_MASQUERADE nf_nat_masquerade_ipv4 iptable_nat
nf_conntrack_ipv4 nf_defrag_ipv4 intel_rapl nf_nat_ipv4 nf_nat nf_conntrack
x86_pkg_temp_thermal intel_powerclamp snd_hda_codec_realtek coretemp amdkfd
snd_hda_codec_generic kvm_intel iTCO_wdt iTCO_vendor_support mxm_wmi
amd_iommu_v2 amdgpu(-) arc4 ath9k kvm ath9k_common ath9k_hw irqbypass chash
crct10dif_pclmul crc32_pclmul gpu_sched ath i2c_algo_bit ghash_clmulni_intel
pcbc aesni_intel ttm mac80211 aes_x86_64 drm_kms_helper
[  992.692279]  crypto_simd cryptd ath3k glue_helper intel_cstate btusb drm
btrtl intel_uncore btbcm snd_hda_intel btintel snd_usb_audio intel_rapl_perf
bluetooth snd_hda_codec uvcvideo cfg80211 snd_usbmidi_lib snd_hda_core
snd_rawmidi videobuf2_vmalloc videobuf2_memops snd_hwdep snd_seq_device
videobuf2_v4l2 i2c_i801 agpgart snd_pcm syscopyarea videobuf2_common snd_timer
ecdh_generic sysfillrect mei_me pl2303 input_leds crc16 snd r8169 rfkill
sysimgblt videodev usbserial mousedev joydev lpc_ich mii e1000e fb_sys_fops mei
soundcore led_class ioatdma media dca shpchp rtc_cmos wmi bridge evdev mac_hid
stp llc tun sg crypto_user ip_tables x_tables btrfs libcrc32c crc32c_generic
xor zstd_decompress zstd_compress xxhash raid6_pq sd_mod sr_mod cdrom
hid_generic usbhid hid isci ahci libsas libahci scsi_transport_sas
[  992.692325]  xhci_pci ehci_pci crc32c_intel xhci_hcd ehci_hcd libata usbcore
usb_common scsi_mod
[  992.692333] CPU: 5 PID: 113 Comm: kworker/5:1 Tainted: G        W        
4.17.2-1-ARCH #1
[  992.692335] Hardware name: Gigabyte Technology Co., Ltd. To be filled by
O.E.M./X79S-UP5, BIOS F5f 03/19/2014
[  992.692351] Workqueue: events drm_connector_free_work_fn [drm]
[  992.692357] RIP: 0010:mutex_lock+0x10/0x20
[  992.692358] RSP: 0018:ffffaadf46edfe18 EFLAGS: 00010246
[  992.692361] RAX: 0000000000000000 RBX: c5f816ba155656e8 RCX:
000000010020001b
[  992.692363] RDX: ffff960e76c09e00 RSI: ffff960e6f2ad818 RDI:
c5f816ba155656e8
[  992.692365] RBP: c5f816ba15565490 R08: 0000000000000001 R09:
ffffffffc0fffa22
[  992.692367] R10: fffffbf4bfbcab00 R11: 000000000000001b R12:
ffff960e6f2ad818
[  992.692369] R13: ffff960e62c192e0 R14: 0ffff960e7f36750 R15:
ffff960e76c7b000
[  992.692372] FS:  0000000000000000(0000) GS:ffff960e7f340000(0000)
knlGS:0000000000000000
[  992.692374] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[  992.692376] CR2: 00007ffc558036f8 CR3: 000000044700a005 CR4:
00000000001626e0
[  992.692378] Call Trace:
[  992.692389]  drm_mode_object_unregister+0x1e/0x60 [drm]
[  992.692398]  drm_encoder_cleanup+0x35/0xa0 [drm]
[  992.692442]  dm_dp_mst_connector_destroy+0x35/0x50 [amdgpu]
[  992.692453]  drm_connector_free_work_fn+0x72/0x90 [drm]
[  992.692457]  process_one_work+0x1d1/0x3b0
[  992.692460]  worker_thread+0x2b/0x3d0
[  992.692462]  ? process_one_work+0x3b0/0x3b0
[  992.692465]  kthread+0x112/0x130
[  992.692467]  ? kthread_flush_work_fn+0x10/0x10
[  992.692470]  ret_from_fork+0x35/0x40
[  992.692472] Code: 37 6e 93 ff 0f 1f 80 00 00 00 00 0f 1f 44 00 00 be 02 00
00 00 e9 c1 fa ff ff 90 0f 1f 44 00 00 65 48 8b 14 25 00 5c 01 00 31 c0 <f0> 48
0f b1 17 48 85 c0 74 02 eb d4 c3 0f 1f 00 0f 1f 44 00 00 
[  992.692497] RIP: mutex_lock+0x10/0x20 RSP: ffffaadf46edfe18
[  992.692500] ---[ end trace 841909ebd0d56ac2 ]---

This is on Arch Linux, kernel:
Linux home.thecybershadow.net 4.17.2-1-ARCH #1 SMP PREEMPT Sat Jun 16 11:08:59
UTC 2018 x86_64 GNU/Linux

Using 1 Radeon RX Vega 64 driving 2 monitors, Philips 240BW and Asus PQ321Q.

Full dmesg:
https://dump.thecybershadow.net/27386389f800db8f44b7fe7af422f926/13%3A30%3A08-stdin.txt

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 6337 bytes --]

[-- Attachment #2: Type: text/plain, Size: 160 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 106993] general protection fault in mutex_lock / drm_mode_object_unregister when unloading amdgpu

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 451 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=106993

wedens13@yandex.ru changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
           See Also|                            |https://bugs.freedesktop.or
                   |                            |g/show_bug.cgi?id=111229

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 1128 bytes --]

[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel

[Bug 106993] general protection fault in mutex_lock / drm_mode_object_unregister when unloading amdgpu

[bugzilla-daemon]

[-- Attachment #1.1: Type: text/plain, Size: 805 bytes --]

https://bugs.freedesktop.org/show_bug.cgi?id=106993

Martin Peres <martin.peres@free.fr> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
         Resolution|---                         |MOVED
             Status|NEW                         |RESOLVED

--- Comment #1 from Martin Peres <martin.peres@free.fr> ---
-- GitLab Migration Automatic Message --

This bug has been migrated to freedesktop.org's GitLab instance and has been
closed from further activity.

You can subscribe and participate further through the new bug through this link
to our GitLab instance: https://gitlab.freedesktop.org/drm/amd/issues/425.

-- 
You are receiving this mail because:
You are the assignee for the bug.

[-- Attachment #1.2: Type: text/html, Size: 2491 bytes --]

[-- Attachment #2: Type: text/plain, Size: 159 bytes --]

_______________________________________________
dri-devel mailing list
dri-devel@lists.freedesktop.org
https://lists.freedesktop.org/mailman/listinfo/dri-devel