Backtrace

BUG: kernel NULL pointer dereference, address: 000000000000008d
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 0 P4D 0 
Oops: 0000 [#3] SMP NOPTI
CPU: 7 PID: 1947 Comm: systemd Tainted: G      D W         5.14.10-300.fc35.x86_64 #1
Hardware name: LENOVO 81FB/LNVNB161216, BIOS 7WCN38WW 11/04/2019
RIP: 0010:__kmalloc_track_caller+0x100/0x2e0
Code: 66 19 d0 7c 49 8b 00 49 83 78 10 00 48 89 44 24 08 0f 84 a3 01 00 00 48 85 c0 0f 84 9a 01 00 00 8b 4d 28 48 8b 7d 00 48 01 c1 <48> 8b 19 48 89 ce 48 33 9d b8 00 00 00 48 0f ce 48 31 f3 40 f6 c7
RSP: 0018:ffffb5bd0356fba8 EFLAGS: 00010206
RAX: 000000000000007d RBX: ffff976380247000 RCX: 000000000000008d
RDX: 00000000000034a8 RSI: 0000000000000cc0 RDI: 0000000000030080
RBP: ffff976380042400 R08: ffff9765b3df0080 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000cc0 R14: 0000000000000014 R15: 0000000000000cc0
FS:  00007efc7971eb40(0000) GS:ffff9765b3dc0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000000000008d CR3: 0000000166446000 CR4: 00000000003506e0
Call Trace:
 ? __kernfs_new_node+0x31/0x1a0
 kstrdup+0x2e/0x60
 __kernfs_new_node+0x31/0x1a0
 ? __cond_resched+0x16/0x40
 ? vsnprintf+0x21a/0x550
 kernfs_new_node+0x33/0x50
 __kernfs_create_file+0x25/0xb0
 cgroup_addrm_files+0x136/0x310
 ? __kmalloc_node+0x1ca/0x360
 css_populate_dir+0x86/0x140
 cgroup_apply_control_enable+0xe7/0x330
 cgroup_mkdir+0x211/0x480
 kernfs_iop_mkdir+0x57/0x80
 vfs_mkdir+0x12f/0x1e0
 do_mkdirat+0x114/0x140
 do_syscall_64+0x3b/0x90
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7efc7a25448b
Code: 8b 05 a1 89 0f 00 41 bc ff ff ff ff 64 c7 00 16 00 00 00 e9 4f ff ff ff e8 12 fd 01 00 66 90 f3 0f 1e fa b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d 6d 89 0f 00 f7 d8 64 89 01 48
RSP: 002b:00007fff60f8a9b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053
RAX: ffffffffffffffda RBX: 0000560ee0850e10 RCX: 00007efc7a25448b
RDX: 0000000000000000 RSI: 00000000000001ed RDI: 0000560ee080b1c0
RBP: 00007fff60f8aa00 R08: 0000000000000049 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00000000000000a0 R14: 00007efc7a6aeb3e R15: 0000000000000002
Modules linked in: rfcomm snd_seq_dummy snd_hrtimer nft_objref 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 ns bnep sunrpc vfat fat snd_hda_codec_realtek snd_hda_codec_generic intel_rapl_msr intel_rapl_common rtw88_8821ce ledtrig_audio snd_hda_codec_hdmi rtw88_8821c uvcvideo snd_hda_intel rtw88_pci snd_intel_dspcfg videobuf2_vmalloc edac_mce_amd rtw88_core snd_intel_sdw_acpi kvm_amd snd_hda_codec videobuf2_memops kvm mac80211 videobuf2_v4l2 videobuf2_common btusb btrtl btbcm btintel bluetooth snd_hda_core irqbypass snd_hwdep videodev rapl snd_seq snd_seq_device snd_pcm joydev mc wmi_bmof pcspkr cfg80211 k10temp i2c_piix4 snd_timer snd_rn_pci_acp3x ecdh_generic snd snd_pci_acp3x soundcore ideapad_laptop platform_profile sparse_keymap libarc4 rfkill acpi_cpufreq zram
 ip_tables amdgpu drm_ttm_helper ttm iommu_v2 hid_multitouch gpu_sched i2c_algo_bit drm_kms_helper crct10dif_pclmul crc32_pclmul crc32c_intel sdhci_pci cec cqhci ghash_clmulni_intel drm serio_raw sp5100_tco sdhci nvme ccp mmc_core nvme_core wmi video i2c_hid_acpi i2c_hid fuse
CR2: 000000000000008d