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xen: branch for v5.12-rc6

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Merge tag 'for-linus-5.12b-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip

Pull xen fix from Juergen Gross:
 "One Xen related security fix (XSA-371)"

* tag 'for-linus-5.12b-rc6-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
  xen-blkback: don't leak persistent grants from xen_blkbk_map()
This commit is contained in:
Linus Torvalds 2021-03-30 08:55:47 -07:00
commit a080642d2f
1 changed files with 1 additions and 1 deletions
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2
drivers/block/xen-blkback/blkback.c
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@ -891,7 +891,7 @@ next:
out:
for (i = last_map; i < num; i++) {
/* Don't zap current batch's valid persistent grants. */
if(i >= last_map + segs_to_map)
if(i >= map_until)
pages[i]->persistent_gnt = NULL;
pages[i]->handle = BLKBACK_INVALID_HANDLE;
}