Backtrace

WARNING: CPU: 7 PID: 2972 at drivers/char/tpm/tpm_tis_core.c:205 tpm_tis_status+0x86/0x90
Modules linked in: cmac bnep vfat fat squashfs loop nvidia_drm(POE) nvidia_modeset(POE) nvidia_uvm(OE) nvidia(POE) hid_multitouch snd_hda_codec_hdmi snd_sof_pci snd_sof_intel_byt snd_sof_intel_ipc snd_sof_intel_hda_common snd_soc_hdac_hda snd_sof_xtensa_dsp snd_sof_intel_hda snd_sof snd_soc_skl dell_rbtn snd_hda_codec_realtek snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_ext_core i2c_designware_platform i2c_designware_core snd_hda_codec_generic intel_rapl_msr dell_laptop snd_soc_acpi_intel_match snd_soc_acpi x86_pkg_temp_thermal ledtrig_audio dcdbas intel_powerclamp dell_smm_hwmon snd_hda_intel snd_intel_dspcfg coretemp soundwire_intel soundwire_generic_allocation snd_soc_core kvm_intel iwlmvm snd_compress kvm soundwire_cadence irqbypass rapl soundwire_bus intel_cstate mac80211 snd_hda_codec dell_wmi intel_uncore dell_smbios pcspkr btusb rtsx_pci_ms dell_wmi_sysman dell_wmi_descriptor wmi_bmof intel_wmi_thunderbolt snd_hda_core libarc4 memstick mei_me btrtl btbcm snd_usb_audio
 iwlwifi mei btintel snd_usbmidi_lib bluetooth snd_hwdep snd_rawmidi snd_seq joydev cfg80211 snd_seq_device snd_pcm uvcvideo videobuf2_vmalloc videobuf2_memops snd_timer videobuf2_v4l2 videobuf2_common snd idma64 ecdh_generic videodev soundcore intel_lpss_pci rfkill intel_lpss processor_thermal_device intel_soc_dts_iosf intel_pch_thermal intel_rapl_common int3403_thermal int340x_thermal_zone dell_smo8800 intel_hid acpi_pad intel_pmc_core int3400_thermal acpi_thermal_rel sparse_keymap auth_rpcgss sunrpc ip_tables xfs libcrc32c dm_crypt i915 cec intel_gtt i2c_algo_bit rtsx_pci_sdmmc mmc_core drm_kms_helper mxm_wmi crct10dif_pclmul syscopyarea crc32_pclmul sysfillrect sysimgblt crc32c_intel ahci fb_sys_fops ghash_clmulni_intel libahci nvme serio_raw drm e1000e libata nvme_core rtsx_pci t10_pi i2c_hid wmi video pinctrl_cannonlake dm_mirror dm_region_hash dm_log dm_mod fuse
CPU: 7 PID: 2972 Comm: rngd Tainted: P           OE    --------- -  - 4.18.0-305.25.1.el8_4.x86_64 #1
Hardware name: Dell Inc. Precision 3551/0GYJNK, BIOS 1.2.15 07/01/2020
RIP: 0010:tpm_tis_status+0x86/0x90
Code: 00 00 89 d8 75 28 48 83 c4 10 5b c3 31 db 80 3d 38 e2 20 01 00 75 dd 48 c7 c7 8f ad b2 a0 c6 05 28 e2 20 01 01 e8 e3 ce b1 ff <0f> 0b eb c6 e8 e1 cb b1 ff 90 0f 1f 44 00 00 41 57 49 89 f7 41 56
RSP: 0018:ffffb9fac4e4fca0 EFLAGS: 00010286
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000007
RDX: 0000000000000007 RSI: 0000000000000096 RDI: ffff92991f5d6800
RBP: ffff929903c2c000 R08: 0000000000000450 R09: 0000000000000004
R10: 0000000000000000 R11: 0000000000000001 R12: ffff9298db8dc258
R13: 0000000000000000 R14: 0000000000000014 R15: ffff9298d08f4000
FS:  00007fb0bd3d7840(0000) GS:ffff92991f5c0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055ff236cc730 CR3: 000000081e5e8006 CR4: 00000000007706e0
PKRU: 55555554
Call Trace:
 tpm_tis_send_data+0x41/0x260
 ? __switch_to_asm+0x41/0x70
 tpm_tis_send_main+0x31/0x100
 tpm_transmit+0xd9/0x490
 tpm_transmit_cmd+0x25/0x90
 tpm2_get_random+0xec/0x1e0
 tpm_get_random+0x57/0x70
 rng_dev_read+0x17f/0x280
 vfs_read+0x91/0x140
 ksys_read+0x4f/0xb0
 do_syscall_64+0x5b/0x1a0
 entry_SYSCALL_64_after_hwframe+0x65/0xca
RIP: 0033:0x7fb0bbd288e4
Code: c3 0f 1f 44 00 00 41 54 49 89 d4 55 48 89 f5 53 89 fb 48 83 ec 10 e8 7b fc ff ff 4c 89 e2 48 89 ee 89 df 41 89 c0 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 38 44 89 c7 48 89 44 24 08 e8 b7 fc ff ff 48
RSP: 002b:00007ffc88999490 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fb0bbd288e4
RDX: 00000000000009c4 RSI: 00007ffc88999510 RDI: 0000000000000003
RBP: 00007ffc88999510 R08: 0000000000000000 R09: 00007fb0bd3d7840
R10: 0000000000000008 R11: 0000000000000246 R12: 00000000000009c4
R13: 0000000000000000 R14: 00007ffc88999510 R15: 00007ffc88999510