Comment # 7
on bug 111659
from Brad Campbell
And another one. Disturbingly in a different location. I'm starting to wonder if there is a deeper issue at play. [237702.755803] invalid opcode: 0000 [#1] SMP [237702.755811] CPU: 2 PID: 15611 Comm: kworker/2:1 Not tainted 5.4.0-rc4-bkc1+ #3 [237702.755813] Hardware name: Apple Inc. iMac12,2/Mac-942B59F58194171B, BIOS 82.0.0.0.0 09/25/2018 [237702.755835] Workqueue: events radeon_dp_work_func [radeon] [237702.755846] RIP: 0010:radeon_gart_table_vram_unpin+0x101/0x110 [radeon] [237702.755848] Code: 00 fe ff ff 74 ed 5b 48 89 ea 48 c7 c6 64 ae 3c a0 48 8b 85 20 03 00 00 5d 41 5c 48 8b 38 e9 38 63 00 e1 4c 89 e7 e8 5e 4e ef <ff> eb a 0 66 90 66 2e 0f 1f 84 00 00 00 00 00 48 83 bf 68 04 00 00 [237702.755850] RSP: 0000:ffffc90003d07e50 EFLAGS: 00010292 [237702.755851] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000004 [237702.755853] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffc90003d07e3a [237702.755854] RBP: ffff888262c40000 R08: ffffffffa0213837 R09: 0000000000000006 [237702.755856] R10: 0000000000000006 R11: 0000000000000000 R12: ffff8882639e1a40 [237702.755857] R13: 0000000000000000 R14: ffff888267b22c00 R15: 0000000000000000 [237702.755858] FS: 0000000000000000(0000) GS:ffff888267b00000(0000) knlGS:0000000000000000 [237702.755860] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [237702.755861] CR2: 00002bc12936d1e0 CR3: 0000000252db0004 CR4: 00000000000606a0 [237702.755862] Call Trace: [237702.755878] radeon_dp_work_func+0x28/0x40 [radeon] [237702.755883] process_one_work+0x1b4/0x330 [237702.755885] worker_thread+0x44/0x3d0 [237702.755887] ? set_worker_desc+0x90/0x90 [237702.755890] kthread+0xec/0x120 [237702.755892] ? kthread_create_worker_on_cpu+0x40/0x40 [237702.755895] ret_from_fork+0x1f/0x30 [237702.755897] Modules linked in: cpufreq_userspace cpufreq_powersave cpufreq_conservative nfsv4 nfsd auth_rpcgss nfs_acl nfs lockd grace fscache sunrpc af_packet dm_crypt dm_mod dax coretemp applesmc input_polldev kvm_intel led_class kvm btusb btbcm uvcvideo irqbypass videobuf2_vmalloc videobuf2_memops btintel videobuf2_v4l2 bluetooth snd_usb_audio videodev snd_usbmidi_lib rfkill videobuf2_common ecdh_generic snd_rawmidi ecc joydev evdev snd_hda_codec_cirrus snd_hda_codec_generic snd_hda_codec_hdmi snd_hda_intel snd_intel_nhlt snd_hda_codec snd_hwdep snd_hda_core snd_pcm snd_timer snd apple_bl button soundcore ext4 crc32c_generic crc16 mbcache jbd2 netconsole configfs hid_apple hid_appleir hid_generic usbhid hid usb_storage sg sr_mod cdrom sd_mod aesni_intel glue_helper crypto_simd cryptd ahci libahci xhci_pci radeon xhci_hcd i2c_algo_bit backlight drm_kms_helper syscopyarea sysfillrect firewire_ohci sysimgblt fb_sys_fops ehci_pci firewire_core ttm uhci_hcd crc_itu_t tg3 ehci_hcd libphy drm [237702.755925] usbcore usb_common i2c_core [237702.755931] ---[ end trace 5f73030a00b66980 ]--- [237702.755941] RIP: 0010:radeon_gart_table_vram_unpin+0x101/0x110 [radeon] [237702.755943] Code: 00 fe ff ff 74 ed 5b 48 89 ea 48 c7 c6 64 ae 3c a0 48 8b 85 20 03 00 00 5d 41 5c 48 8b 38 e9 38 63 00 e1 4c 89 e7 e8 5e 4e ef <ff> eb a0 66 90 66 2e 0f 1f 84 00 00 00 00 00 48 83 bf 68 04 00 00 [237702.755944] RSP: 0000:ffffc90003d07e50 EFLAGS: 00010292 [237702.755945] RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000004 [237702.755947] RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffc90003d07e3a [237702.755948] RBP: ffff888262c40000 R08: ffffffffa0213837 R09: 0000000000000006 [237702.755950] R10: 0000000000000006 R11: 0000000000000000 R12: ffff8882639e1a40 [237702.755951] R13: 0000000000000000 R14: ffff888267b22c00 R15: 0000000000000000 [237702.755952] FS: 0000000000000000(0000) GS:ffff888267b00000(0000) knlGS:0000000000000000 [237702.755954] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [237702.755955] CR2: 00002bc12936d1e0 CR3: 0000000252db0004 CR4: 00000000000606a0 [237702.755957] Kernel panic - not syncing: Fatal exception [237702.755981] Kernel Offset: disabled [237702.755983] Rebooting in 10 seconds.. [237712.756129] ACPI MEMORY or I/O RESET_REG.
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