Backtrace

WARNING: CPU: 4 PID: 840 at drivers/char/tpm/tpm_tis_core.c:249 tpm_tis_status+0x66/0x70
Modules linked in: vmnet(OE) ppdev parport_pc parport vmw_vsock_vmci_transport vsock vmw_vmci vmmon(OE) cmac bnep snd_hda_codec_hdmi snd_sof_pci snd_sof_intel_byt snd_sof_intel_hda_common snd_soc_hdac_hda snd_sof_intel_hda snd_sof_intel_ipc snd_sof snd_sof_xtensa_dsp snd_hda_codec_realtek snd_soc_skl snd_hda_codec_generic snd_soc_sst_ipc snd_soc_sst_dsp snd_hda_ext_core snd_soc_acpi_intel_match snd_soc_acpi snd_hda_intel snd_intel_dspcfg soundwire_intel soundwire_generic_allocation snd_soc_core snd_compress snd_pcm_dmaengine x86_pkg_temp_thermal soundwire_cadence intel_powerclamp sunrpc snd_hda_codec coretemp iTCO_wdt dell_laptop kvm_intel snd_hda_core intel_pmc_bxt ac97_bus ee1004 ledtrig_audio snd_hwdep iTCO_vendor_support mei_hdcp intel_rapl_msr dell_smm_hwmon kvm vfat fat squashfs iwlmvm irqbypass snd_seq rapl snd_seq_device intel_cstate loop intel_uncore snd_pcm mac80211 dell_wmi dell_smbios btusb snd_timer btrtl dcdbas pcspkr uvcvideo snd dell_wmi_descriptor wmi_bmof
 btbcm libarc4 videobuf2_vmalloc intel_wmi_thunderbolt i2c_i801 btintel videobuf2_memops videobuf2_v4l2 i2c_smbus soundcore thunderbolt bluetooth iwlwifi videobuf2_common videodev joydev cfg80211 hid_sensor_als mei_me hid_sensor_trigger idma64 hid_sensor_iio_common ecdh_generic industrialio_triggered_buffer mc ecc kfifo_buf mei industrialio rfkill processor_thermal_device intel_rapl_common ucsi_acpi typec_ucsi intel_soc_dts_iosf intel_pch_thermal typec int3403_thermal int340x_thermal_zone int3400_thermal intel_hid acpi_pad acpi_thermal_rel acpi_tad sparse_keymap zram ip_tables hid_sensor_hub intel_ishtp_loader intel_ishtp_hid i915 nouveau hid_multitouch mxm_wmi ttm rtsx_pci_sdmmc i2c_algo_bit mmc_core drm_kms_helper crct10dif_pclmul crc32_pclmul nvme crc32c_intel cec ghash_clmulni_intel drm nvme_core serio_raw intel_ish_ipc rtsx_pci intel_ishtp wmi i2c_hid video pinctrl_cannonlake fuse
CPU: 4 PID: 840 Comm: rngd Tainted: G           OE     5.10.14-200.fc33.x86_64 #1
Hardware name: Dell Inc. XPS 15 9500/05XYW7, BIOS 1.6.1 12/24/2020
RIP: 0010:tpm_tis_status+0x66/0x70
Code: 23 75 05 48 83 c4 10 c3 31 c0 80 3d 30 e0 56 01 00 75 f0 48 c7 c7 74 3a 43 a6 88 44 24 07 c6 05 1c e0 56 01 01 e8 ef 02 3c 00 <0f> 0b 0f b6 44 24 07 eb d0 90 0f 1f 44 00 00 41 57 41 56 41 55 41
RSP: 0018:ffffbbf440f87cd0 EFLAGS: 00010286
RAX: 000000000000001b RBX: ffff908b41ce3000 RCX: ffff9092ad518a88
RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: ffff9092ad518a80
RBP: ffff908b41ce3000 R08: 0000000000000000 R09: ffffbbf440f87b00
R10: ffffbbf440f87af8 R11: ffffffffa6b44748 R12: ffff908b481de328
R13: ffff908b6641a000 R14: 0000000000000000 R15: ffffbbf440f87d8a
FS:  00007fa1848f5840(0000) GS:ffff9092ad500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa343222000 CR3: 0000000103230002 CR4: 00000000007706e0
PKRU: 55555554
Call Trace:
 tpm_tis_send_data+0x2b/0x230
 tpm_tis_send_main+0x1e/0xe0
 tpm_transmit+0xd8/0x3d0
 tpm_transmit_cmd+0x25/0x90
 tpm2_get_random+0xd7/0x1d0
 ? tpm_chip_start+0x6a/0xb0
 tpm_get_random+0x5b/0x70
 rng_dev_read+0x1b8/0x2c0
 vfs_read+0xab/0x1a0
 ksys_read+0x4f/0xc0
 do_syscall_64+0x33/0x40
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x7fa1851780fc
Code: ec 28 48 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 19 fc ff ff 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 31 c0 0f 05 <48> 3d 00 f0 ff ff 77 34 44 89 c7 48 89 44 24 08 e8 6f fc ff ff 48
RSP: 002b:00007ffc37222480 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00000000000009c4 RCX: 00007fa1851780fc
RDX: 00000000000009c4 RSI: 00007ffc37222500 RDI: 0000000000000003
RBP: 00007ffc37222500 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 00005623f8cc26c0
R13: 0000000000000000 R14: 00007ffc37222500 R15: 00005623f8cc26f0