Commit fc4f28bb authored Sep 14, 2020 by Linus Torvalds

linux

Pull btrfs fix from David Sterba:
 "One of the recent lockdep fixes introduced a bug that breaks the
  search ioctl, which is used by some applications (bees, compsize). The
  patch made it to stable trees so we need this fixup to make it work
  again"

* tag 'for-5.9-rc5-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
  btrfs: fix wrong address when faulting in pages in the search ioctl

parents 973c096f 1c78544e

fs/btrfs/ioctl.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -2193,7 +2193,8 @@ static noinline int search_ioctl(struct inode *inode,
		key.offset = sk->min_offset;

		while (1) {
		ret = fault_in_pages_writeable(ubuf, *buf_size - sk_offset);
		ret = fault_in_pages_writeable(ubuf + sk_offset,
		*buf_size - sk_offset);
		if (ret)
		break;

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