Re: [PATCH] mm: handle potential NULL return from anon_vma_name_reuse()

[Ye Liu]

在 2026/4/21 17:08, Lorenzo Stoakes 写道:
> NAK, expected allocation failures (even if practically impossible) should not
> cause arbitrary kernel warnings.

Thank you both for the thorough review and explanation.                    
                                                                           
You are absolutely right. I mistakenly assumed that leaving vma->anon_name 
as NULL could lead to a NULL pointer dereference in some path, but as you  
pointed out, the code is designed to treat NULL as "no name", which is     
perfectly valid.                                                           
                                                                           
I also acknowledge that adding a WARN_ON_ONCE in an allocation failure path
is incorrect and harmful under memory pressure.                            
                                                                           
Please disregard this patch. I've learned a valuable lesson about error    
handling in cosmetic features.                                             
                                                                           
Thank you again for the guidance.                                          

-- 
Thanks,
Ye Liu