Juergen Gross 71258b7522 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> Signed-off-by: samuelliao <samuelliao@tencent.com>		2024-06-11 20:41:34 +08:00
..
Kconfig	treewide: Add SPDX license identifier - Makefile/Kconfig	2019-05-21 10:50:46 +02:00
Makefile	9p: Remove p9_idpool	2018-08-29 13:39:57 +09:00
client.c	9p: Transport error uninitialized	2019-09-03 11:05:34 +00:00
error.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 188	2019-05-30 11:29:21 -07:00
mod.c	treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 188	2019-05-30 11:29:21 -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: include trans_common.h to fix missing prototype warning.	2018-11-20 15:04:16 +09:00
trans_common.h	net/9p: remove (now-)unused helpers	2015-04-11 22:28:29 -04:00
trans_fd.c	ock: sync codes to ock 5.4.119-20.0009.21	2024-06-11 20:27:38 +08:00
trans_rdma.c	rdma: Enable ib_alloc_cq to spread work over a device's comp_vectors	2019-08-05 11:50:32 -04:00
trans_virtio.c	9p pull request for inclusion in 5.13	2019-07-12 17:31:19 -07:00
trans_xen.c	xen/9p: use alloc/free_pages_exact()	2024-06-11 20:41:34 +08:00