Juergen Gross a019d26830 xen/9p: use alloc/free_pages_exact() ... Commit 5cadd4bb1d upstream. Instead of __get_free_pages() and free_pages() use alloc_pages_exact() and free_pages_exact(). This is in preparation of a change of gnttab_end_foreign_access() which will prohibit use of high-order pages. By using the local variable "order" instead of ring->intf->ring_order in the error path of xen_9pfs_front_alloc_dataring() another bug is fixed, as the error path can be entered before ring->intf->ring_order is being set. By using alloc_pages_exact() the size in bytes is specified for the allocation, which fixes another bug for the case of order < (PAGE_SHIFT - XEN_PAGE_SHIFT). This is part of CVE-2022-23041 / XSA-396. Reported-by: Simon Gaiser <simon@invisiblethingslab.com> Signed-off-by: Juergen Gross <jgross@suse.com> Reviewed-by: Jan Beulich <jbeulich@suse.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2022-03-11 12:22:36 +01:00
..
Kconfig	net: remove redundant 'depends on NET'	2021-01-27 17:04:12 -08:00
Makefile	9p: Remove p9_idpool	2018-08-29 13:39:57 +09:00
client.c	9p/net: fix missing error check in p9_check_errors	2021-11-18 19:17:16 +01:00
error.c	net: 9p: Correct function name errstr2errno() in the kerneldoc comments	2021-03-28 17:56:56 -07:00
mod.c	net: Add MODULE_DESCRIPTION entries to network modules	2020-06-20 21:33:57 -07:00
protocol.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 188	2019-05-30 11:29:21 -07:00
protocol.h	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 188	2019-05-30 11:29:21 -07:00
trans_common.c	net: 9p: Fix kerneldoc warnings of missing parameters etc	2020-11-02 12:25:52 -08:00
trans_common.h	net/9p: remove (now-)unused helpers	2015-04-11 22:28:29 -04:00
trans_fd.c	net/9p: increase tcp max msize to 1MB	2021-09-05 08:35:56 +09:00
trans_rdma.c	net: 9p: Fix kerneldoc warnings of missing parameters etc	2020-11-02 12:25:52 -08:00
trans_virtio.c	9p/trans_virtio: Remove sysfs file on probe failure	2021-07-27 23:01:15 +09:00
trans_xen.c	xen/9p: use alloc/free_pages_exact()	2022-03-11 12:22:36 +01:00