Module Name: src
Committed By: riastradh
Date: Fri Jan 19 22:22:40 UTC 2024
Modified Files:
src/sys/external/bsd/drm2/dist/drm/i915/gem: i915_gem_mman.c
Log Message:
i915_gem: Avoid walking off end of sg_pgs.
sg_npgs currently fails to match obj->base.size/PAGE_SIZE only due to
bugs in the construction of sg_pgs in various i915 gem object types,
which we should also fix, but let's avoid compounding it here.
Related to PR kern/57833.
XXX pullup-10
To generate a diff of this commit:
cvs rdiff -u -r1.21 -r1.22 \
src/sys/external/bsd/drm2/dist/drm/i915/gem/i915_gem_mman.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/external/bsd/drm2/dist/drm/i915/gem/i915_gem_mman.c
diff -u src/sys/external/bsd/drm2/dist/drm/i915/gem/i915_gem_mman.c:1.21 src/sys/external/bsd/drm2/dist/drm/i915/gem/i915_gem_mman.c:1.22
--- src/sys/external/bsd/drm2/dist/drm/i915/gem/i915_gem_mman.c:1.21 Sun Dec 19 12:26:55 2021
+++ src/sys/external/bsd/drm2/dist/drm/i915/gem/i915_gem_mman.c Fri Jan 19 22:22:40 2024
@@ -1,4 +1,4 @@
-/* $NetBSD: i915_gem_mman.c,v 1.21 2021/12/19 12:26:55 riastradh Exp $ */
+/* $NetBSD: i915_gem_mman.c,v 1.22 2024/01/19 22:22:40 riastradh Exp $ */
/*
* SPDX-License-Identifier: MIT
@@ -7,7 +7,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: i915_gem_mman.c,v 1.21 2021/12/19 12:26:55 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: i915_gem_mman.c,v 1.22 2024/01/19 22:22:40 riastradh Exp $");
#include <linux/anon_inodes.h>
#include <linux/mman.h>
@@ -675,7 +675,7 @@ void i915_gem_object_release_mmap_offset
if (!i915_gem_object_has_pages(obj))
return;
- for (i = 0; i < obj->base.size >> PAGE_SHIFT; i++) {
+ for (i = 0; i < obj->mm.pages->sgl->sg_npgs; i++) {
page = obj->mm.pages->sgl->sg_pgs[i];
vm_page = &page->p_vmp;
pmap_page_protect(vm_page, VM_PROT_NONE);
