Re: [PATCH] mm: add missing alloc_percpu() NULL check in hotplug init
Hongfu Li <[email protected]>
| Newsgroups | org.kernel.vger.linux-cxl,org.kernel.vger.linux-kernel,org.kvack.linux-mm |
|---|---|
| Message-ID | <[email protected]> |
On 7/17/26 2:46 PM, Mike Rapoport wrote: > On Fri, Jul 17, 2026 at 01:29:38PM +0800, Hongfu Li wrote: >> From: Hongfu Li <[email protected]> >> >> No NULL check is done for alloc_percpu() when initializing per-CPU >> nodestats. Allocation failure leads to NULL pointer dereference >> during later memset. >> >> Make function return int, check alloc_percpu() result and return >> -ENOMEM on error. The caller chain already propagates this error >> correctly. > I already applied a fix from Gregory: > > https://patch.msgid.link/[email protected] > > It'll be unstreamed soon. Got it, I'll drop this patch as Gregory's fix is already on the way upstream.