SUNRPC: _shift_data_left/right_pages should check the shift length (c54e959b) · Commits · 戴 / test

net/sunrpc/xdr.c

+12 −0

Original line number	Diff line number	Diff line
		@@ -225,6 +225,9 @@ _shift_data_left_pages(struct page **pages, size_t pgto_base,

		BUG_ON(pgfrom_base <= pgto_base);

		if (!len)
		return;

		pgto = pages + (pgto_base >> PAGE_SHIFT);
		pgfrom = pages + (pgfrom_base >> PAGE_SHIFT);

		@@ -307,6 +310,9 @@ _shift_data_right_pages(struct page **pages, size_t pgto_base,

		BUG_ON(pgto_base <= pgfrom_base);

		if (!len)
		return;

		pgto_base += len;
		pgfrom_base += len;

		@@ -405,6 +411,9 @@ _copy_to_pages(struct page *pages, size_t pgbase, const char p, size_t len)
		char *vto;
		size_t copy;

		if (!len)
		return;

		pgto = pages + (pgbase >> PAGE_SHIFT);
		pgbase &= ~PAGE_MASK;

		@@ -449,6 +458,9 @@ _copy_from_pages(char p, struct page *pages, size_t pgbase, size_t len)
		char *vfrom;
		size_t copy;

		if (!len)
		return;

		pgfrom = pages + (pgbase >> PAGE_SHIFT);
		pgbase &= ~PAGE_MASK;