Re: [harry:kmalloc-no-objext-rfc-v1r1] [mm/slab] 6bc21472e7: BUG:kernel_NULL_pointer_dereference,address

hi, Harry Yoo,

On Thu, Jul 09, 2026 at 06:26:54PM +0900, Harry Yoo wrote:
> 
> 
> On 7/9/26 5:48 PM, kernel test robot wrote:
> > 
> > 
> > Hello,
> > 
> > kernel test robot noticed "BUG:kernel_NULL_pointer_dereference,address" on:
> > 
> > commit: 6bc21472e7eb9f8c771ffdf86266aa6d9dcb1dac ("mm/slab: prevent unbounded recursion due to obj_exts in free path")
> > https://git.kernel.org/cgit/linux/kernel/git/harry/linux.git kmalloc-no-objext-rfc-v1r1
> 
> This is v1r1, and I posted v1r3, because it was bootstrapping sheaves
> for normal kmalloc only. This crashed the kernel but was fixed in v1r2.
> 
> Apologies for the confusion, I discovered bugs after exposing it in my
> tree (force pushing isn't great, you know...) I should probably have
> deleted that broken one, though. :)
> 
> Will be posting v2 that fixes false warnings w/ memalloc profiling
> debug shortly.

thanks a lot for information! sorry that our bot still cannot analyze branch
version so far. we will check the latest branch in your repo before reporting
in the future.