6.6-stable review patch. If anyone has any objections, please let me know.
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From: Yajun Deng yajun.deng@linux.dev
[ Upstream commit 6a9531c3a88096a26cf3ac582f7ec44f94a7dcb2 ]
After commit 61167ad5fecd ("mm: pass nid to reserve_bootmem_region()") nid of a reserved region is used by init_reserved_page() (with CONFIG_DEFERRED_STRUCT_PAGE_INIT=y) to access node strucure. In many cases the nid of the reserved memory is not set and this causes a crash.
When the nid of a reserved region is not set, fall back to early_pfn_to_nid(), so that nid of the first_online_node will be passed to init_reserved_page().
Fixes: 61167ad5fecd ("mm: pass nid to reserve_bootmem_region()") Signed-off-by: Yajun Deng yajun.deng@linux.dev Link: https://lore.kernel.org/r/20240118061853.2652295-1-yajun.deng@linux.dev [rppt: massaged the commit message] Signed-off-by: Mike Rapoport (IBM) rppt@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- mm/memblock.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/mm/memblock.c b/mm/memblock.c index 913b2520a9a0..6d18485571b4 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -2119,6 +2119,9 @@ static void __init memmap_init_reserved_pages(void) start = region->base; end = start + region->size;
+ if (nid == NUMA_NO_NODE || nid >= MAX_NUMNODES) + nid = early_pfn_to_nid(PFN_DOWN(start)); + reserve_bootmem_region(start, end, nid); } }