Re: [RFC PATCH] smpboot: Check for successfull allocation of cpumask vars

From: Thomas Gleixner
Date: Tue Dec 09 2014 - 15:10:49 EST

On Tue, 9 Dec 2014, Pranith Kumar wrote:
> zalloc_cpumask_var() can return 0 on allocation failure when
> CONFIG_CPUMASK_OFFSTACK is set. Check for the return value and WARN() on failure
> of an allocation in such cases.

And that warning helps in which way?

It just prints a completely useless backtrace and breaks out of the
loop, but it does not prevent that later on code will trip over the
non allocated per cpu data.


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at