diff options
Diffstat (limited to '0003-xen-fix-XEN_DOMCTL_gdbsx_guestmemio-crash.patch')
| -rw-r--r-- | 0003-xen-fix-XEN_DOMCTL_gdbsx_guestmemio-crash.patch | 63 |
1 files changed, 0 insertions, 63 deletions
diff --git a/0003-xen-fix-XEN_DOMCTL_gdbsx_guestmemio-crash.patch b/0003-xen-fix-XEN_DOMCTL_gdbsx_guestmemio-crash.patch deleted file mode 100644 index fa1443c..0000000 --- a/0003-xen-fix-XEN_DOMCTL_gdbsx_guestmemio-crash.patch +++ /dev/null @@ -1,63 +0,0 @@ -From 6c6bbfdff9374ef41f84c4ebed7b8a7a40767ef6 Mon Sep 17 00:00:00 2001 -From: Juergen Gross <jgross@suse.com> -Date: Tue, 7 Jun 2022 13:56:54 +0200 -Subject: [PATCH 03/51] xen: fix XEN_DOMCTL_gdbsx_guestmemio crash - -A hypervisor built without CONFIG_GDBSX will crash in case the -XEN_DOMCTL_gdbsx_guestmemio domctl is being called, as the call will -end up in iommu_do_domctl() with d == NULL: - - (XEN) CPU: 6 - (XEN) RIP: e008:[<ffff82d040269984>] iommu_do_domctl+0x4/0x30 - (XEN) RFLAGS: 0000000000010202 CONTEXT: hypervisor (d0v0) - (XEN) rax: 00000000000003e8 rbx: ffff830856277ef8 rcx: ffff830856277fff - ... - (XEN) Xen call trace: - (XEN) [<ffff82d040269984>] R iommu_do_domctl+0x4/0x30 - (XEN) [<ffff82d04035cd5f>] S arch_do_domctl+0x7f/0x2330 - (XEN) [<ffff82d040239e46>] S do_domctl+0xe56/0x1930 - (XEN) [<ffff82d040238ff0>] S do_domctl+0/0x1930 - (XEN) [<ffff82d0402f8c59>] S pv_hypercall+0x99/0x110 - (XEN) [<ffff82d0402f5161>] S arch/x86/pv/domain.c#_toggle_guest_pt+0x11/0x90 - (XEN) [<ffff82d040366288>] S lstar_enter+0x128/0x130 - (XEN) - (XEN) Pagetable walk from 0000000000000144: - (XEN) L4[0x000] = 0000000000000000 ffffffffffffffff - (XEN) - (XEN) **************************************** - (XEN) Panic on CPU 6: - (XEN) FATAL PAGE FAULT - (XEN) [error_code=0000] - (XEN) Faulting linear address: 0000000000000144 - (XEN) **************************************** - -It used to be permitted to pass DOMID_IDLE to dbg_rw_mem(), which is why the -special case skipping the domid checks exists. Now that it is only permitted -to pass proper domids, remove the special case, making 'd' always valid. - -Reported-by: Cheyenne Wills <cheyenne.wills@gmail.com> -Fixes: e726a82ca0dc ("xen: make gdbsx support configurable") -Signed-off-by: Juergen Gross <jgross@suse.com> -Reviewed-by: Jan Beulich <jbeulich@suse.com> -Reviewed-by: Andrew Cooper <andrew.cooper3@citrix.com> -master commit: f00daf1fb3213a9b0335d9dcd90fe9cb5c02b7a9 -master date: 2022-04-19 17:07:08 +0100 ---- - xen/common/domctl.c | 1 - - 1 file changed, 1 deletion(-) - -diff --git a/xen/common/domctl.c b/xen/common/domctl.c -index 271862ae587f..419e4070f59d 100644 ---- a/xen/common/domctl.c -+++ b/xen/common/domctl.c -@@ -304,7 +304,6 @@ long do_domctl(XEN_GUEST_HANDLE_PARAM(xen_domctl_t) u_domctl) - if ( op->domain == DOMID_INVALID ) - { - case XEN_DOMCTL_createdomain: -- case XEN_DOMCTL_gdbsx_guestmemio: - d = NULL; - break; - } --- -2.35.1 - |