The quilt patch titled Subject: mm: percpu: use kmemleak_ignore_phys() instead of kmemleak_free() has been removed from the -mm tree. Its filename was mm-percpu-use-kmemleak_ignore_phys-instead-of-kmemleak_free.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Patrick Wang <patrick.wang.shcn@xxxxxxxxx> Subject: mm: percpu: use kmemleak_ignore_phys() instead of kmemleak_free() Date: Tue, 5 Jul 2022 19:31:58 +0800 Kmemleak recently added a rbtree to store the objects allocted with physical address. Those objects can't be freed with kmemleak_free(). According to the comments, percpu allocations are tracked by kmemleak separately. Kmemleak_free() was used to avoid the unnecessary tracking. If kmemleak_free() fails, those objects would be scanned by kmemleak, which is unnecessary but shouldn't lead to other effects. Use kmemleak_ignore_phys() instead of kmemleak_free() for those objects. Link: https://lkml.kernel.org/r/20220705113158.127600-1-patrick.wang.shcn@xxxxxxxxx Fixes: 0c24e061196c ("mm: kmemleak: add rbtree and store physical address for objects allocated with PA") Signed-off-by: Patrick Wang <patrick.wang.shcn@xxxxxxxxx> Cc: Dennis Zhou <dennis@xxxxxxxxxx> Cc: Tejun Heo <tj@xxxxxxxxxx> Cc: Christoph Lameter <cl@xxxxxxxxx> Cc: Catalin Marinas <catalin.marinas@xxxxxxx> Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> --- mm/percpu.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) --- a/mm/percpu.c~mm-percpu-use-kmemleak_ignore_phys-instead-of-kmemleak_free +++ a/mm/percpu.c @@ -3104,7 +3104,7 @@ int __init pcpu_embed_first_chunk(size_t goto out_free_areas; } /* kmemleak tracks the percpu allocations separately */ - kmemleak_free(ptr); + kmemleak_ignore_phys(__pa(ptr)); areas[group] = ptr; base = min(ptr, base); @@ -3304,7 +3304,7 @@ int __init pcpu_page_first_chunk(size_t goto enomem; } /* kmemleak tracks the percpu allocations separately */ - kmemleak_free(ptr); + kmemleak_ignore_phys(__pa(ptr)); pages[j++] = virt_to_page(ptr); } } @@ -3417,7 +3417,7 @@ void __init setup_per_cpu_areas(void) if (!ai || !fc) panic("Failed to allocate memory for percpu areas."); /* kmemleak tracks the percpu allocations separately */ - kmemleak_free(fc); + kmemleak_ignore_phys(__pa(fc)); ai->dyn_size = unit_size; ai->unit_size = unit_size; _ Patches currently in -mm which might be from patrick.wang.shcn@xxxxxxxxx are