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| author | David Hildenbrand <david@redhat.com> | 2019-09-27 17:46:28 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-10-11 18:36:22 +0200 |
| commit | 3a3b4722b5292bcdea52bdbd39263d883b34ae5a (patch) | |
| tree | f2d8bddd300773746fc971150c256b07ad5b153d | |
| parent | b74c20f6e96528598958f6f5b74cb50ed9029691 (diff) | |
| download | linux-stable-3a3b4722b5292bcdea52bdbd39263d883b34ae5a.tar.gz linux-stable-3a3b4722b5292bcdea52bdbd39263d883b34ae5a.tar.bz2 linux-stable-3a3b4722b5292bcdea52bdbd39263d883b34ae5a.zip | |
xen/balloon: Set pages PageOffline() in balloon_add_region()
commit c5ad81eb029570c5ca5859539b0679f07a776d25 upstream.
We are missing a __SetPageOffline(), which is why we can get
!PageOffline() pages onto the balloon list, where
alloc_xenballooned_pages() will complain:
page:ffffea0003e7ffc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0
flags: 0xffffe00001000(reserved)
raw: 000ffffe00001000 dead000000000100 dead000000000200 0000000000000000
raw: 0000000000000000 0000000000000000 00000001ffffffff 0000000000000000
page dumped because: VM_BUG_ON_PAGE(!PageOffline(page))
------------[ cut here ]------------
kernel BUG at include/linux/page-flags.h:744!
invalid opcode: 0000 [#1] SMP NOPTI
Reported-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Tested-by: Marek Marczykowski-Górecki <marmarek@invisiblethingslab.com>
Fixes: 77c4adf6a6df ("xen/balloon: mark inflated pages PG_offline")
Cc: stable@vger.kernel.org # v5.1+
Cc: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Cc: Juergen Gross <jgross@suse.com>
Cc: Stefano Stabellini <sstabellini@kernel.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/xen/balloon.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/xen/balloon.c b/drivers/xen/balloon.c index 4e11de6cde81..91cba70b69df 100644 --- a/drivers/xen/balloon.c +++ b/drivers/xen/balloon.c @@ -688,6 +688,7 @@ static void __init balloon_add_region(unsigned long start_pfn, /* totalram_pages and totalhigh_pages do not include the boot-time balloon extension, so don't subtract from it. */ + __SetPageOffline(page); __balloon_append(page); } |