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authorLinus Torvalds <torvalds@linux-foundation.org>2024-01-28 20:41:39 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2024-01-28 20:41:39 +0300
commita08ebda97e2a32b8f1de2c8240337f726c2e1ba7 (patch)
tree3085f8816f4b59960c522f4acf58d8e361adc936 /mm/memblock.c
parent8a696a29c6905594e4abf78eaafcb62165ac61f1 (diff)
parent6a9531c3a88096a26cf3ac582f7ec44f94a7dcb2 (diff)
downloadlinux-a08ebda97e2a32b8f1de2c8240337f726c2e1ba7.tar.xz
Merge tag 'fixes-2024-01-28' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock
Pull memblock fix from Mike Rapoport: "Fix crash when reserved memory is not added to memory. When CONFIG_DEFERRED_STRUCT_PAGE_INIT is enabled, the initialization of reserved pages may cause access of NODE_DATA() with invalid nid and crash. Add a fall back to early_pfn_to_nid() in memmap_init_reserved_pages() to ensure a valid node id is always passed to init_reserved_page()" * tag 'fixes-2024-01-28' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock: memblock: fix crash when reserved memory is not added to memory
Diffstat (limited to 'mm/memblock.c')
-rw-r--r--mm/memblock.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/mm/memblock.c b/mm/memblock.c
index abd92869874d..4dcb2ee35eca 100644
--- a/mm/memblock.c
+++ b/mm/memblock.c
@@ -2176,6 +2176,9 @@ 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);
}
}