Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
Merge tag 'fixes-2023-02-11' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock
Pull memblock revert from Mike Rapoport:
"Revert 'mm: Always release pages to the buddy allocator in
memblock_free_late()'
The pages being freed by memblock_free_late() have already been
initialized, but if they are in the deferred init range,
__free_one_page() might access nearby uninitialized pages when trying
to coalesce buddies, which will cause a crash.
A proper fix will be more involved so revert this change for the time
being"
* tag 'fixes-2023-02-11' of git://git.kernel.org/pub/scm/linux/kernel/git/rppt/memblock:
Revert "mm: Always release pages to the buddy allocator in memblock_free_late()."
+1
-11
+1
-7
mm/memblock.c
+1
-7
mm/memblock.c
···
1640
1640
end = PFN_DOWN(base + size);
1641
1641
1642
1642
for (; cursor < end; cursor++) {
1643
-
/*
1644
-
* Reserved pages are always initialized by the end of
1645
-
* memblock_free_all() (by memmap_init() and, if deferred
1646
-
* initialization is enabled, memmap_init_reserved_pages()), so
1647
-
* these pages can be released directly to the buddy allocator.
1648
-
*/
1649
-
__free_pages_core(pfn_to_page(cursor), 0);
1643
+
memblock_free_pages(pfn_to_page(cursor), cursor, 0);
1650
1644
totalram_pages_inc();
1651
1645
}
1652
1646
}