[PATCH] ARM: mvebu: Add check in coherency.c to prevent null pointer dereference

[duoming at zju.edu.cn]

On Sun, 25 Feb 2024 11:30:20 +0000 Russell King (Oracle) wrote:
> > The kzalloc() in armada_375_380_coherency_init() will return
> > null if the physical memory has run out. As a result, if we
> > dereference the property pointer, the null pointer dereference
> > bug will happen.
> > 
> > This patch adds a check to avoid null pointer dereference.
> 
> Again, what if kstrdup() fails?

Thank you for your suggestions, I will also add a check to judge
whether kstrdup() fails.

Best regards,
Duoming Zhou