Backtrace

WARNING: CPU: 7 PID: 1258 at drivers/char/tpm/tpm_tis_core.c:249 tpm_tis_status+0x66/0x70
Modules linked in: bnep sunrpc iTCO_wdt intel_pmc_bxt iTCO_vendor_support x86_pkg_temp_thermal intel_powerclamp coretemp mei_hdcp dell_laptop kvm_intel intel_rapl_msr squashfs vfat dell_smm_hwmon fat kvm loop iwlmvm irqbypass intel_cstate intel_uncore mac80211 snd_sof_pci dell_wmi dell_smbios snd_sof_intel_byt pcspkr snd_sof_intel_hda_common dcdbas snd_hda_codec_realtek snd_soc_hdac_hda wmi_bmof snd_sof_intel_hda dell_wmi_descriptor amdgpu libarc4 snd_sof_intel_ipc snd_hda_codec_generic snd_sof snd_sof_xtensa_dsp snd_hda_ext_core i2c_i801 iwlwifi i2c_smbus snd_soc_acpi_intel_match snd_hda_codec_hdmi snd_soc_acpi btusb ledtrig_audio btrtl btbcm snd_hda_intel btintel snd_intel_dspcfg bluetooth soundwire_intel cfg80211 soundwire_generic_allocation uvcvideo snd_soc_core mei_me mei videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 snd_compress videobuf2_common snd_pcm_dmaengine soundwire_cadence videodev idma64 snd_hda_codec mc ecdh_generic hid_sensor_accel_3d rfkill ax88179_178a
 hid_sensor_als hid_sensor_magn_3d hid_sensor_gyro_3d hid_sensor_incl_3d hid_sensor_rotation ecc snd_hda_core hid_sensor_trigger hid_sensor_iio_common usbnet industrialio_triggered_buffer kfifo_buf ac97_bus industrialio snd_hwdep mii snd_seq snd_seq_device snd_pcm joydev snd_timer snd iommu_v2 gpu_sched processor_thermal_device thunderbolt ttm soundcore intel_rapl_common intel_soc_dts_iosf ucsi_acpi typec_ucsi typec int3403_thermal int340x_thermal_zone soc_button_array intel_hid acpi_pad int3400_thermal sparse_keymap acpi_thermal_rel acpi_tad zram ip_tables dm_crypt hid_sensor_hub intel_ishtp_loader intel_ishtp_hid i915 wacom hid_multitouch rtsx_pci_sdmmc mmc_core i2c_algo_bit drm_kms_helper crct10dif_pclmul crc32_pclmul crc32c_intel nvme cec ghash_clmulni_intel serio_raw drm intel_ish_ipc nvme_core rtsx_pci intel_ishtp video wmi i2c_hid pinctrl_tigerlake fuse
CPU: 7 PID: 1258 Comm: rngd Tainted: G          I       5.10.12-200.fc33.x86_64 #1
Hardware name: Dell Inc. XPS 13 9310 2-in-1/0N6KJH, BIOS 1.1.1 10/05/2020
RIP: 0010:tpm_tis_status+0x66/0x70
Code: 23 75 05 48 83 c4 10 c3 31 c0 80 3d a0 e0 56 01 00 75 f0 48 c7 c7 14 37 43 8b 88 44 24 07 c6 05 8c e0 56 01 01 e8 6b 03 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:ffffabfc4144fcd0 EFLAGS: 00010286
RAX: 000000000000001b RBX: ffff967bc7958000 RCX: ffff967f3f7d8a88
RDX: 00000000ffffffd8 RSI: 0000000000000027 RDI: ffff967f3f7d8a80
RBP: ffff967bc7958000 R08: 0000000000000000 R09: ffffabfc4144fb00
R10: ffffabfc4144faf8 R11: ffffffff8bb44748 R12: ffff967bc7a02c28
R13: ffff967c16dac000 R14: 0000000000000000 R15: ffffabfc4144fd8a
FS:  00007fb1d8d51840(0000) GS:ffff967f3f7c0000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000558890b9fffc CR3: 0000000152d78006 CR4: 0000000000770ee0
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: 0033:0x7fb1d95d10fc
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:00007ffc80f9d1a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00000000000009c4 RCX: 00007fb1d95d10fc
RDX: 00000000000009c4 RSI: 00007ffc80f9d220 RDI: 0000000000000003
RBP: 00007ffc80f9d220 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 000056207a29c6c0
R13: 0000000000000000 R14: 00007ffc80f9d220 R15: 000056207a29c6f0