Jetson AGX Xavier crashing during the serial data transfer

Dear NVIDIA,

We are testing jetson agx xavier 8GB module with custom carrier board and we have used XR17V352 Pcie to Uart IC for PCIe to uart conversion and XR17V352 is connected to C3 controller of jetson agx xavier. when we try to transfer data from other system to jetson through UART(Jetson to other system communication is ok), system is crashing and below is the log file from debug port. Please check and provide the solution.

trident@trident-desktop:~$ [ 424.447451] NMI watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [swapper/0:0]
[ 424.448087] Kernel panic - not syncing: softlockup: hung tasks
[ 424.448255] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G L 4.9.140-tegra #1
[ 424.448412] Hardware name: NVIDIA Jetson AGX Xavier 8GB Developer Kit (DT)
[ 424.448555] Call trace:
[ 424.448628] [] dump_backtrace+0x0/0x198
[ 424.448748] [] show_stack+0x24/0x30
[ 424.448868] [] dump_stack+0x98/0xc0
[ 424.448994] [] panic+0x11c/0x298
[ 424.449111] [] watchdog_unpark_threads+0x0/0x98
[ 424.449250] [] __hrtimer_run_queues+0xd8/0x360
[ 424.449375] [] hrtimer_interrupt+0xa8/0x1e0
[ 424.449510] [] arch_timer_handler_phys+0x38/0x58
[ 424.449647] [] handle_percpu_devid_irq+0x90/0x2b0
[ 424.449779] [] generic_handle_irq+0x34/0x50
[ 424.450184] [] __handle_domain_irq+0x68/0xc0
[ 424.450636] [] gic_handle_irq+0x5c/0xb0
[ 424.454561] [] el1_irq+0xe8/0x194
[ 424.459469] [] irq_exit+0xd0/0x118
[ 424.464518] [] __handle_domain_irq+0x6c/0xc0
[ 424.470130] [] gic_handle_irq+0x5c/0xb0
[ 424.475466] [] el1_irq+0xe8/0x194
[ 424.480280] [] cpuidle_enter_state+0xb8/0x380
[ 424.486311] [] cpuidle_enter+0x34/0x48
[ 424.492090] [] call_cpuidle+0x44/0x70
[ 424.497073] [] cpu_startup_entry+0x1b0/0x200
[ 424.503286] [] rest_init+0x84/0x90
[ 424.508279] [] start_kernel+0x370/0x384
[ 424.513782] [] __primary_switched+0x80/0x94
[ 424.519390] SMP: stopping secondary CPUs
[ 424.523243] Kernel Offset: disabled

There is no update from you for a period, assuming this is not an issue any more.
Hence we are closing this topic. If need further support, please open a new one.
Thanks

Could you please share the ‘sudo lspci -vvvv’ output before the data transfer is started?
Also, could you please share the full dmesg log?
Has this PCIe card been tested on any other platform?