Re: [PATCH 1/2] mm/slub: Add panic function when slub leaks

[Greg KH]

On Wed, Sep 25, 2024 at 11:22:55AM +0800, Fangzheng Zhang wrote:
> Perform real-time memory usage monitoring on the slub page
> allocation paths, ie, kmalloc_large_alloced and alloc_slab_page.
> When the usage exceeds the set threshole value, the panic function
> will be triggered.
> 
> Signed-off-by: Fangzheng Zhang <fangzheng.zhang@xxxxxxxxxx>
> ---
>  mm/Kconfig | 11 ++++++++
>  mm/slub.c  | 76 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
>  2 files changed, 87 insertions(+)
> 
> diff --git a/mm/Kconfig b/mm/Kconfig
> index 09aebca1cae3..60cf72d4f0da 100644
> --- a/mm/Kconfig
> +++ b/mm/Kconfig
> @@ -255,6 +255,17 @@ config SLUB_TINY
>  
>  	   If unsure, say N.
>  
> +config SLUB_LEAK_PANIC
> +	bool "Trigger panic when slub leaks"
> +	default y

"default y" is only there if the feature is required to boot the machine
properly.  That's not the case here, sorry.

thanks,

greg k-h