[PATCH 1/1] sandbox: handling out of memory

[Heinrich Schuchardt]

Am June 7, 2020 1:45:53 PM UTC schrieb Simon Glass <sjg at chromium.org>:
>Hi Heinrich,
>
>On Thu, 4 Jun 2020 at 11:28, Heinrich Schuchardt <xypron.glpk at gmx.de>
>wrote:
>>
>> assert() only works in debug mode. So checking a successful memory
>> allocation should not use assert().
>>
>
>Reviewed-by: Simon Glass <sjg at chromium.org>
>
>What sort of environment are you using that returns NULL in this case?

You will get NULL here if mmap() fails. This should happen if your machine has less then 128 MiB left over or you increase the RAM size of the sandbox.

For testing I suggest you increase the sandbox memory size beyond the RAM and swap size of your computer.

Best regards

Heinrich

>
>Regards,
>Simon
>
>
>> Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
>> ---
>>  arch/sandbox/cpu/state.c | 5 ++++-
>>  1 file changed, 4 insertions(+), 1 deletion(-)
>>
>> diff --git a/arch/sandbox/cpu/state.c b/arch/sandbox/cpu/state.c
>> index 1f794123b3..34b6fff7e7 100644
>> --- a/arch/sandbox/cpu/state.c
>> +++ b/arch/sandbox/cpu/state.c
>> @@ -378,7 +378,10 @@ int state_init(void)
>>
>>         state->ram_size = CONFIG_SYS_SDRAM_SIZE;
>>         state->ram_buf = os_malloc(state->ram_size);
>> -       assert(state->ram_buf);
>> +       if (!state->ram_buf) {
>> +               printf("Out of memory\n");
>> +               os_exit(1);
>> +       }
>>
>>         state_reset_for_test(state);
>>         /*
>> --
>> 2.26.2
>>