OpenOCD Output after first load:

TZEN option bit disabled
workarea_addr 536870912
Info : Padding image section 0 at 0x0800a3cc with 4 bytes
Info : Padding image section 1 at 0x0800af4c with 4 bytes (bank write end alignment)
Error: timeout waiting for algorithm, a target reset is recommended
Error: error executing stm32l4 flash write algorithm
Error: block write failed
Error: error writing to flash at address 0x08000000 at offset 0x00000000
Error: [stm32u5x.cpu] clearing lockup after double fault
Error: [stm32u5x.cpu] Polling failed, trying to reexamine
Info : [stm32u5x.cpu] Cortex-M33 r0p4 processor detected
Info : [stm32u5x.cpu] target has 8 breakpoints, 4 watchpoints
Info : [stm32u5x.cpu] Examination succeed
Info : Unable to match requested speed 4800 kHz, using 3300 kHz
Info : Unable to match requested speed 4800 kHz, using 3300 kHz
[stm32u5x.cpu] halted due to debug-request, current mode: Thread
xPSR: 0xf9000000 pc: 0xfffffffe msp: 0xfffffffc

gdb output after first load:

vdb 22:32:11 T1#0> load
Loading section .isr_vector, size 0x250 lma 0x8000000
Loading section .text, size 0xa17c lma 0x8000250
Loading section .rodata, size 0x49c lma 0x800a3d0
Loading section .ARM, size 0x8 lma 0x800a86c
Loading section .data, size 0x6d8 lma 0x800a874
Error finishing flash operation



OpenOCD Output after second load:

TZEN option bit disabled
workarea_addr 536870912
Info : Padding image section 0 at 0x0800a3cc with 4 bytes
Info : Padding image section 1 at 0x0800af4c with 4 bytes (bank write end alignment)
Info : Unable to match requested speed 4800 kHz, using 3300 kHz
Info : Unable to match requested speed 4800 kHz, using 3300 kHz
[stm32u5x.cpu] halted due to breakpoint, current mode: Thread
xPSR: 0xf9000000 pc: 0x080050e0 msp: 0x20270000
Error: Failed to read memory at 0x0000001d




gdb output after second load:

vdb 22:32:26 T1#0> load
Loading section .isr_vector, size 0x250 lma 0x8000000
Loading section .text, size 0xa17c lma 0x8000250
Loading section .rodata, size 0x49c lma 0x800a3d0
Loading section .ARM, size 0x8 lma 0x800a86c
Loading section .data, size 0x6d8 lma 0x800a874
Start address 0x080050e0, load size 44872
Transfer rate: 75 KB/sec, 6410 bytes/write.