The patch titled
Subject: xen/x86: free_p2m_page: use memblock_free_ptr() to free a virtual pointer
has been added to the -mm tree. Its filename is
xen-x86-free_p2m_page-use-memblock_free_ptr-to-free-a-virtual-pointer.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/xen-x86-free_p2m_page-use-memblock_free_ptr-to-free-a-virtual-pointer.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/xen-x86-free_p2m_page-use-memblock_free_ptr-to-free-a-virtual-pointer.patch
Before you just go and hit "reply", please:
a) Consider who else should be cc'ed
b) Prefer to cc a suitable mailing list as well
c) Ideally: find the original patch on the mailing list and do a
reply-to-all to that, adding suitable additional cc's
*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***
The -mm tree is included into linux-next and is updated
there every 3-4 working days
------------------------------------------------------
From: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Subject: xen/x86: free_p2m_page: use memblock_free_ptr() to free a virtual pointer
free_p2m_page() wrongly passes a virtual pointer to memblock_free() that
treats it as a physical address.
Call memblock_free_ptr() instead that gets a virtual address to free the
memory.
Link: https://lkml.kernel.org/r/20210930185031.18648-3-rppt@xxxxxxxxxx
Signed-off-by: Mike Rapoport <rppt@xxxxxxxxxxxxx>
Reviewed-by: Juergen Gross <jgross@xxxxxxxx>
Cc: Christophe Leroy <christophe.leroy@xxxxxxxxxx>
Cc: Shahab Vahedi <Shahab.Vahedi@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/xen/p2m.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/xen/p2m.c~xen-x86-free_p2m_page-use-memblock_free_ptr-to-free-a-virtual-pointer
+++ a/arch/x86/xen/p2m.c
@@ -197,7 +197,7 @@ static void * __ref alloc_p2m_page(void)
static void __ref free_p2m_page(void *p)
{
if (unlikely(!slab_is_available())) {
- memblock_free((unsigned long)p, PAGE_SIZE);
+ memblock_free_ptr(p, PAGE_SIZE);
return;
}
_
Patches currently in -mm which might be from rppt@xxxxxxxxxxxxx are
arch_numa-simplify-numa_distance-allocation.patch
xen-x86-free_p2m_page-use-memblock_free_ptr-to-free-a-virtual-pointer.patch
memblock-drop-memblock_free_early_nid-and-memblock_free_early.patch
memblock-stop-aliasing-__memblock_free_late-with-memblock_free_late.patch
memblock-rename-memblock_free-to-memblock_phys_free.patch
memblock-use-memblock_free-for-freeing-virtual-pointers.patch
