Hi,
We are planing to do hdmi compliance test on agx xavier industrial and our custom board with R35.6.1.
The sysem crashes after running sudo busybox devmem 0x15b005a8
Please see the error messgaes below.
p@p-desktop:~$ sudo busybox devmem 0x15b005a8
[ 223.487435] CPU:0, Error: cbb-noc@2300000, ir0xDq=15
EAD2003
[ 223.487638] **************************************
[ 223.487792] CPU:0, Error:cbb-noc
[ 223.487901] Error Logger : 0
[ 223.487980] ErrLog0 : 0x80030000
[ 223.488057] Transaction Type : RD - Read, Incrementing
[ 223.488164] Error Code : SLV
[ 223.488269] Error Source : Target
[ 223.488351] Error Description : Target error detected by CBB slave
[ 223.488492] AXI2APB_5 bridge error: RDFIFOF - Read Response FIFO Full interrupt
[ 223.488707] Packet header Lock : 0
[ 223.488784] Packet header Len1 : 3
[ 223.488860] NOC protocol version : version >= 2.7
[ 223.488954] ErrLog1 : 0x352428
[ 223.489022] ErrLog2 : 0x0
[ 223.489076] RouteId : 0x352428
[ 223.489150] InitFlow : ccroc_p2ps/I/ccroc_p2ps
[ 223.489255] Targflow : host1x_p2pm/T/host1x_p2pm
[ 223.489353] TargSubRange : 18
[ 223.489430] SeqId : 0
[ 223.489606] ErrLog3 : 0x5a8
[ 223.489817] ErrLog4 : 0x0
[ 223.490009] Address accessed : 0x15b005a8
[ 223.491555] ErrLog5 : 0xa09f850
[ p@p-de.49453op:7] Non-Modify : 0x1
[ 223.498738] AXI ID : 0x14
[ 223.501795] Master ID : CCPLEX
[ 223.504947] Security Group(GRPSEC): 0x7e
[ 223.509407] Cache : 0x0 -- Device Non-Bufferable
[ 223.514656] Protection : 0x2 -- Unprivileged, Non-Secure, Data Access
[ 223.521225] FALCONSEC : 0x0
[ 223.524631] Virtual Queuing Channel(VQC): 0x0
[ 223.529269] **************************************
[ 223.534083] kernel BUG at drivers/soc/tegra/cbb/tegra194-cbb.c:2057!
[ 223.540652] Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP
[ 223.547207] Modules linked in: fuse(E) bnep(E) lzo_rle(E) lzo_compress(E) zram(E) snd_soc_tegra186_asrc(E) snd_soc_tegra186_arad(E) snd_soc_tegra210_mixer(E) snd_soc_tegra186_dspk(E) snd_soc_tegra210_iqc(E) snd_soc_tegra210_ope(E) snd_soc_tegra210_mvc(E) snd_soc_tegra210_dmic(E) snd_soc_tegra210_admaif(E) snd_soc_tegra210_afc(E) snd_soc_tegra_pcm(E) snd_soc_tegra210_adx(E) snd_soc_tegra210_amx(E) snd_soc_tegra210_i2s(E) snd_soc_tegra210_sfc(E) aes_ce_blk(E) crypto_simd(E) cryptd(E) aes_ce_cipher(E) ghash_ce(E) sha2_ce(E) sha256_arm64(E) sha1_ce(E) snd_soc_tegra210_adsp(E) snd_soc_tegra_machine_driver(E) wlan_cnss_core_pcie(OE) snd_soc_tegra_utils(E) ucsi_ccg(E) snd_soc_simple_card_utils(E) snd_soc_spdif_tx(E) typec_ucsi(E) snd_soc_rt5659(E) cfg80211(E) max77620_thermal(E) snd_soc_rl6231(E) typec(E) nct1008(E) tegra_bpmp_thermal(E) nvadsp(E) snd_soc_tegra210_ahub(E) tegra210_adma(E) snd_hda_codec_hdmi(E) userspace_alert(E) bluedroid_pm(E) snd_hda_tegra(E) snd_hda_codec(E) snd_hda_core(E)
[ 223.547607] spi_tegra210_qspi(E) spi_tegra114(E) ahci(E) libahci(E) libata(E) binfmt_misc(E) loop(E) ina3221(E) pwm_fan(E) nvgpu(E) nvmap(E) ip_tables(E) x_tables(E) [last unloaded: mtd]
[ 223.650820] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G OE 5.10.216 #4
[ 223.658421] Hardware name: NVIDIA Jetson-AGXi/Jetson, BIOS 202210.5.1-Unknown 09/05/2025
[ 223.666822] pstate: 60400089 (nZCv daIf +PAN -UAO -TCO BTYPE=--)
[ 223.672899] pc : tegra194_cbb_err_isr+0x19c/0x1b0
[ 223.677585] lr : tegra194_cbb_err_isr+0x11c/0x1b0
[ 223.682304] sp : ffff800010003df0
[ 223.685459] x29: ffff800010003df0 x28: 0000000000000001
[ 223.690971] x27: 0000000000000080 x26: ffffd8da0d898fb0
[ 223.696741] x25: ffffd8da0e1fcee0 x24: 0000000000000001
[ 223.701821] x23: ffffd8da0db86008 x22: ffffd8da0e01ffa0
[ 223.707342] x21: 000000000000000f x20: 0000000000000005
[ 223.712845] x19: ffffd8da0e01ff90 x18: 0000000000000010
[ 223.718616] x17: 0000000000000000 x16: 0000000000000000
[ 223.724129] x15: ffffd8da0de92c30 x14: ffffffffffffffff
[ 223.729296] x13: ffff8000900039e7 x12: ffff8000100039ef
[ 223.735067] x11: 0000000000000038 x10: 0101010101010101
[ 223.740326] x9 : ffff800010003d00 x8 : 2a2a2a2a2a2a2a2a
[ 223.746093] x7 : 2a2a2a2a2a2a2a09 x6 : c0000000ffffefff
[ 223.751603] x5 : ffff29ce4a523970 x4 : ffffd8da0dea7bc8
[ 223.756772] x3 : 0000000000000001 x2 : ffffd8da0c300e20
[ 223.762111] x1 : ffffd8da0de926c0 x0 : 0000000100010001
[ 223.767704] Call trace:
[ 223.770164] tegra194_cbb_err_isr+0x19c/0x1b0
[ 223.774452] __handle_irq_event_percpu+0x68/0x2b0
[ 223.778915] handle_irq_event_percpu+0x40/0xa0
[ 223.783457] handle_irq_event+0x50/0xa0
[ 223.787229] handle_fasteoi_irq+0xc0/0x170
[ 223.790993] generic_handle_irq+0x40/0x60
[ 223.795271] __handle_domain_irq+0x70/0xd0
[ 223.799472] efi_header_end+0xb0/0xf0
[ 223.802713] el1_irq+0xd0/0x180
[ 223.805697] cpuidle_enter_state+0xb8/0x410
[ 223.809889] cpuidle_enter+0x40/0x60
[ 223.813394] call_cpuidle+0x44/0x80
[ 223.817144] do_idle+0x208/0x270
[ 223.820300] cpu_startup_entry+0x30/0x60
[ 223.824327] rest_init+0xdc/0xe8
[ 223.827307] arch_call_rest_init+0x18/0x20
[ 223.831500] start_kernel+0x50c/0x544
[ 223.834836] Code: a9446bf9 a94573fb a8c67bfd d65f03c0 (d4210000)
[ 223.841311] ---[ end trace 7de76a6b43cad412 ]---
[ 223.845766] Kernel panic - not syncing: Oops - BUG: Fatal exception in interrupt
[ 223.853546] SMP: stopping secondary CPUs
[ 223.857189] Kernel Offset: 0x58d9fc140000 from 0xffff800010000000
[ 223.863514] PHYS_OFFSET: 0xffffd63900000000
[ 223.867374] CPU features: 0x48240002,03802a30
[ 223.872090] Memory Limit: none
[ 223.875252] ---[ end Kernel panic - not syncing: Oops - BUG: Fatal exception in interrupt ]---
The register address 0x15b005a8is from Jetson_AGX_Xavier_Series_Tuning_and_Compliance_Guide_DA-09855-001_v1.3.pdf
Why does the system crash?
Did I miss anything?
Thx
Yen