Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000049
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: 0000 [#1] PREEMPT SMP PTI
CPU: 3 PID: 117582 Comm: kworker/3:0 Tainted: G         C         6.3.8-200.fc38.x86_64 #1
Hardware name: Microsoft Corporation Surface Book/Surface Book, BIOS 92.3748.768 05.04.2021
Workqueue: events_long drm_dp_mst_up_req_work [drm_display_helper]
RIP: 0010:get_mst_branch_device_by_guid_helper+0xf/0x70 [drm_display_helper]
Code: 1f 44 00 00 e9 b2 8a 3f e4 66 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1f 44 00 00 41 54 55 48 89 f5 53 48 8b 16 <48> 39 57 49 74 3f 48 8b 47 28 4c 8d 67 28 48 8d 58 e8 49 39 c4 74
RSP: 0000:ffffb6ada8a9fe10 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff8f69c7f54d00 RCX: ffff8f69c7f54cd0
RDX: 000000011c6c4af3 RSI: ffff8f6bade94d98 RDI: 0000000000000000
RBP: ffff8f6bade94d98 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000110 R12: ffff8f6bade94d80
R13: ffff8f69c7f54cd0 R14: ffff8f6bade94d98 R15: ffff8f6bade94e08
FS:  0000000000000000(0000) GS:ffff8f6d1f580000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000049 CR3: 00000002bfeb8001 CR4: 00000000003706e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 ? __die+0x23/0x70
 ? page_fault_oops+0x171/0x4e0
 ? __schedule+0x451/0x14a0
 ? exc_page_fault+0x7c/0x180
 ? asm_exc_page_fault+0x26/0x30
 ? get_mst_branch_device_by_guid_helper+0xf/0x70 [drm_display_helper]
 drm_dp_mst_up_req_work+0x168/0x450 [drm_display_helper]
 process_one_work+0x1c4/0x3d0
 worker_thread+0x51/0x390
 ? __pfx_worker_thread+0x10/0x10
 kthread+0xdb/0x110
 ? __pfx_kthread+0x10/0x10
 ret_from_fork+0x29/0x50
 </TASK>
Modules linked in: exfat uas usb_storage cdc_ether usbnet r8152 mii uinput rfcomm snd_seq_dummy snd_hrtimer bnep btusb btrtl btbcm btintel btmtk bluetooth nf_conntrack_netbios_ns nf_conntrack_broadcast nft_fib_inet nft_fib_ipv4 nft_fib_ipv6 nft_fib nft_reject_inet nf_reject_ipv4 nf_reject_ipv6 nft_reject nft_ct nft_chain_nat nf_nat nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 ip_set nf_tables nfnetlink qrtr snd_sof_pci_intel_skl snd_sof_intel_hda_common soundwire_intel soundwire_generic_allocation soundwire_cadence snd_sof_intel_hda snd_sof_pci snd_sof_xtensa_dsp snd_sof snd_sof_utils soundwire_bus sunrpc snd_soc_avs snd_soc_hda_codec snd_hda_codec_hdmi snd_soc_skl snd_soc_hdac_hda snd_hda_ext_core snd_soc_sst_ipc snd_soc_sst_dsp snd_soc_acpi_intel_match snd_soc_acpi snd_hda_codec_realtek snd_soc_core snd_hda_codec_generic ledtrig_audio snd_compress ac97_bus snd_pcm_dmaengine snd_hda_intel snd_intel_dspcfg intel_rapl_msr snd_intel_sdw_acpi intel_rapl_common mei_pxp mei_hdcp intel_tcc_cooling snd_hda_codec
 x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel snd_hda_core surface_gpe kvm mwifiex_pcie binfmt_misc mwifiex snd_hwdep irqbypass snd_seq rapl vfat fat snd_seq_device intel_cstate cfg80211 hid_sensor_rotation hid_sensor_accel_3d hid_sensor_als hid_sensor_gyro_3d intel_uncore ipu3_imgu(C) snd_pcm hid_sensor_trigger hid_sensor_iio_common ipu3_cio2 snd_timer industrialio_triggered_buffer kfifo_buf pcspkr rfkill snd videobuf2_dma_sg mei_me soundcore industrialio mei videobuf2_memops intel_skl_int3472_tps68470 videobuf2_v4l2 idma64 tps68470_regulator ov7251 clk_tps68470 ov5693 videobuf2_common ov8865 v4l2_fwnode intel_pch_thermal v4l2_async videodev intel_xhci_usb_role_switch mc surfacepro3_button intel_skl_int3472_discrete soc_button_array joydev acpi_pad loop zram hid_multitouch i915 i2c_algo_bit nvme drm_buddy drm_display_helper nvme_core cec crct10dif_pclmul crc32_pclmul crc32c_intel polyval_clmulni hid_sensor_hub polyval_generic ghash_clmulni_intel sha512_ssse3 nvme_common ttm i2c_hid_acpi
 i2c_hid video pinctrl_sunrisepoint wmi ip6_tables ip_tables fuse
CR2: 0000000000000049