Backtrace

WARNING: CPU: 5 PID: 1068 at lib/refcount.c:25 refcount_warn_saturate+0x68/0xf0
Modules linked in: sunrpc vfat fat squashfs loop iwlmvm mac80211 intel_rapl_msr intel_rapl_common libarc4 snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_hda_codec_hdmi edac_mce_amd snd_hda_intel iwlwifi snd_intel_dspcfg kvm_amd ucsi_ccg snd_intel_sdw_acpi snd_hda_codec ccp typec_ucsi typec cfg80211 snd_hda_core kvm snd_hwdep irqbypass snd_seq rapl snd_seq_device snd_pcm joydev rfkill k10temp pcspkr i2c_nvidia_gpu wmi_bmof snd_timer i2c_piix4 snd soundcore acpi_cpufreq zram ip_tables nouveau drm_ttm_helper ttm mxm_wmi i2c_algo_bit video drm_kms_helper crct10dif_pclmul crc32_pclmul cec crc32c_intel drm ghash_clmulni_intel nvme sp5100_tco nvme_core r8169 wmi fuse
CPU: 5 PID: 1068 Comm: systemd-logind Not tainted 5.12.7-300.fc34.x86_64 #1
Hardware name: Micro-Star International Co., Ltd. MS-7C37/MPG X570 GAMING PLUS (MS-7C37), BIOS A.C0 01/25/2021
RIP: 0010:refcount_warn_saturate+0x68/0xf0
Code: 05 8c 12 70 01 01 e8 94 65 57 00 0f 0b c3 80 3d 7c 12 70 01 00 75 d3 48 c7 c7 d0 40 41 a0 c6 05 6c 12 70 01 01 e8 75 65 57 00 <0f> 0b c3 80 3d 5f 12 70 01 00 75 b4 48 c7 c7 a8 40 41 a0 c6 05 4f
RSP: 0018:ffffa5e707883b78 EFLAGS: 00010096
RAX: 000000000000002a RBX: ffff8914c1b55988 RCX: 0000000000000027
RDX: ffff8917deb585c8 RSI: 0000000000000001 RDI: ffff8917deb585c0
RBP: ffffa5e707883bb0 R08: 0000000000000000 R09: ffffa5e7078839a8
R10: ffffa5e7078839a0 R11: ffffffffa0b45f28 R12: ffff8914c1b54d88
R13: 0000000000000000 R14: 0000000000000246 R15: ffff8914c148ac00
FS:  00007f926e43dbc0(0000) GS:ffff8917deb40000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0db3071068 CR3: 0000000129df2000 CR4: 0000000000350ee0
Call Trace:
 klist_next+0x116/0x140
 ? device_match_of_node+0x20/0x20
 class_find_device+0x80/0xe0
 alloc_tty_struct+0x239/0x270
 tty_init_dev.part.0+0x18/0x220
 tty_open+0x540/0x670
 ? kobj_lookup+0xf0/0x160
 chrdev_open+0xe3/0x220
 ? cdev_device_add+0x90/0x90
 do_dentry_open+0x14b/0x360
 path_openat+0xa59/0xfc0
 ? psi_task_change+0x84/0xc0
 ? check_preempt_curr+0x55/0x70
 ? ttwu_do_wakeup+0x17/0x130
 do_filp_open+0x8f/0x120
 ? __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+0x44/0xae
RIP: 0033:0x7f926f1b703b
Code: 25 00 00 41 00 3d 00 00 41 00 74 4b 64 8b 04 25 18 00 00 00 85 c0 75 67 44 89 e2 48 89 ee bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 91 00 00 00 48 8b 54 24 28 64 48 2b 14 25
RSP: 002b:00007ffdcd829200 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000015 RCX: 00007f926f1b703b
RDX: 0000000000080102 RSI: 00007ffdcd8292b0 RDI: 00000000ffffff9c
RBP: 00007ffdcd8292b0 R08: 0000000000000000 R09: 00007ffdcd829140
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000080102
R13: 00007ffdcd8292b0 R14: 000055685101925d R15: 0000556852f474b0