Backtrace

BUG: kernel NULL pointer dereference, address: 0000000000000040
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: 0000 [#1] SMP NOPTI
CPU: 5 PID: 1021 Comm: NetworkManager Not tainted 5.11.12-300.fc34.x86_64 #1
Hardware name: System manufacturer System Product Name/CROSSHAIR VI HERO, BIOS 7901 07/31/2020
RIP: 0010:find_entry.isra.0+0x38/0x90
Code: 41 54 55 53 48 83 ec 08 48 89 3c 24 48 85 f6 74 4f 49 89 d4 89 cd eb 0b 74 58 4d 8b 76 08 4d 85 f6 74 3d 4d 8b 7e 18 4c 89 f3 <49> 2b 5f 40 48 c1 fb 05 48 c1 e3 06 49 03 1f 4c 8b 2b 4c 89 ef e8
RSP: 0018:ffffb7e9c1c07bc8 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffffa07787477cd0 RCX: 0000000000000004
RDX: ffffa0778db3d8f8 RSI: ffffa07787477cd0 RDI: ffffb7e9c1c07c10
RBP: 0000000000000004 R08: ffffa07787491000 R09: ffffa07789cd7033
R10: 0000000000000000 R11: 8f919ad09991909c R12: ffffa0778db3d8f8
R13: ffffa0778db3d8c0 R14: ffffa07787477cd0 R15: 0000000000000000
FS:  00007f11c2af9bc0(0000) GS:ffffa07a8eb40000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000040 CR3: 0000000129bb8000 CR4: 00000000003506e0
Call Trace:
 proc_sys_lookup+0x6f/0x1b0
 __lookup_slow+0x74/0x130
 walk_component+0x11b/0x190
 link_path_walk.part.0.constprop.0+0x20d/0x350
 ? path_init+0x2bd/0x3e0
 ? kfree+0xb3/0x400
 path_openat+0xa6/0xf20
 ? ___sys_sendmsg+0x8e/0xc0
 ? try_to_wake_up+0x1c1/0x4f0
 do_filp_open+0x7e/0x110
 ? __check_object_size+0x136/0x150
 do_sys_openat2+0x7a/0x130
 __x64_sys_openat+0x45/0x70
 do_syscall_64+0x33/0x40
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7f11c3be5094
Code: 24 20 eb 8f 66 90 44 89 54 24 0c e8 66 f5 ff ff 44 8b 54 24 0c 44 89 e2 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 89 44 24 0c e8 b8 f5 ff ff 8b 44
RSP: 002b:00007ffe39501e20 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007ffe39502010 RCX: 00007f11c3be5094
RDX: 0000000000080000 RSI: 00007ffe39502010 RDI: 00000000ffffff9c
RBP: 00007ffe39502010 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000080000
R13: 0000000000100000 R14: 0000000000000000 R15: 00007ffe39501f08
Modules linked in: nfnetlink ip6table_filter ip6_tables iptable_filter cmac bnep sunrpc vfat fat snd_seq_midi snd_seq_midi_event intel_rapl_msr snd_hda_codec_realtek intel_rapl_common snd_hda_codec_generic ledtrig_audio snd_hda_codec_hdmi snd_hda_intel snd_intel_dspcfg soundwire_intel soundwire_generic_allocation snd_soc_core ucsi_ccg typec_ucsi typec snd_compress snd_pcm_dmaengine soundwire_cadence snd_hda_codec edac_mce_amd snd_usb_audio kvm_amd snd_hda_core snd_usbmidi_lib ac97_bus btusb snd_rawmidi snd_hwdep kvm btrtl snd_seq snd_seq_device btbcm snd_pcm btintel irqbypass rapl bluetooth snd_timer snd eeepc_wmi asus_wmi sp5100_tco wmi_bmof pcspkr k10temp mc i2c_piix4 soundcore sparse_keymap i2c_nvidia_gpu joydev ecdh_generic rfkill ecc gpio_amdpt gpio_generic zram ip_tables nouveau video drm_ttm_helper ttm drm_kms_helper cec igb crct10dif_pclmul crc32_pclmul crc32c_intel drm dca ghash_clmulni_intel ccp i2c_algo_bit nvme mxm_wmi nvme_core wmi pinctrl_amd fuse
CR2: 0000000000000040