Hi,
Am 01.06.2022 um 13:59 schrieb Michal Simek:
Hi,
first of all subject is not accurate. We are not using null as start but
address 0.
I will replace null with 0.
On 6/1/22 12:55, Stefan Herbrechtsmeier wrote:
[CAUTION: External Email]
From: Stefan Herbrechtsmeier <stefan.herbrechtsme...@weidmueller.com>
Do not use null as address for memory because of the special meaning for
pointers. Change the spl bss start address to the second page.
Signed-off-by: Stefan Herbrechtsmeier
<stefan.herbrechtsme...@weidmueller.com>
---
The problem was discovered with a static char array initialized with an
empty string.
It means your code is doing wrong pointer arithmeticians which pointed
to BSS section and overwrites there something. What is that code doing?
I like to call the zynqmp_get_silicon_idcode_name function from my board
code and therefore rework the function to return static memory to avoid
a memory allocation on each call.
- char name[ZYNQMP_VERSION_SIZE];
+ static char name[ZYNQMP_VERSION_SIZE] = "";
+ if (name[0])
+ return name;
- return strdup(name);
+ return name;
The name variable gets the address 0 which means that snprintf and
strncat do nothing because the dest pointer and NULL are equal.
Regards
Stefan
