[merged] kasan-page_alloc-move-setpageskipkasanpoison-in-post_alloc_hook.patch removed from -mm tree

[merged] kasan-page_alloc-move-setpageskipkasanpoison-in-post_alloc_hook.patch removed from -mm tree

[Andrew Morton]

The patch titled
     Subject: kasan, page_alloc: move SetPageSkipKASanPoison in post_alloc_hook
has been removed from the -mm tree.  Its filename was
     kasan-page_alloc-move-setpageskipkasanpoison-in-post_alloc_hook.patch

This patch was dropped because it was merged into mainline or a subsystem tree

------------------------------------------------------
From: Andrey Konovalov <andreyknvl@google.com>
Subject: kasan, page_alloc: move SetPageSkipKASanPoison in post_alloc_hook

Pull the SetPageSkipKASanPoison() call in post_alloc_hook() out of the big
if clause for better code readability.  This also allows for more
simplifications in the following patches.

Also turn the kasan_has_integrated_init() check into the proper
kasan_hw_tags_enabled() one.  These checks evaluate to the same value, but
logically skipping kasan poisoning has nothing to do with integrated init.

Link: https://lkml.kernel.org/r/7214c1698b754ccfaa44a792113c95cc1f807c48.1643047180.git.andreyknvl@google.com
Signed-off-by: Andrey Konovalov <andreyknvl@google.com>
Acked-by: Marco Elver <elver@google.com>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <ryabinin.a.a@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Evgenii Stepanov <eugenis@google.com>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Peter Collingbourne <pcc@google.com>
Cc: Vincenzo Frascino <vincenzo.frascino@arm.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 mm/page_alloc.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/mm/page_alloc.c~kasan-page_alloc-move-setpageskipkasanpoison-in-post_alloc_hook
+++ a/mm/page_alloc.c
@@ -2383,9 +2383,6 @@ inline void post_alloc_hook(struct page
 		init = false;
 	}
 	if (kasan_has_integrated_init()) {
-		if (gfp_flags & __GFP_SKIP_KASAN_POISON)
-			SetPageSkipKASanPoison(page);
-
 		if (!init_tags)
 			kasan_unpoison_pages(page, order, init);
 	} else {
@@ -2394,6 +2391,9 @@ inline void post_alloc_hook(struct page
 		if (init)
 			kernel_init_free_pages(page, 1 << order);
 	}
+	/* Propagate __GFP_SKIP_KASAN_POISON to page flags. */
+	if (kasan_hw_tags_enabled() && (gfp_flags & __GFP_SKIP_KASAN_POISON))
+		SetPageSkipKASanPoison(page);
 
 	set_page_owner(page, order, gfp_flags);
 	page_table_check_alloc(page, order);
_

Patches currently in -mm which might be from andreyknvl@google.com are

stacktrace-add-interface-based-on-shadow-call-stack.patch
arm64-scs-save-scs_sp-values-per-cpu-when-switching-stacks.patch
arm64-implement-stack_trace_save_shadow.patch
kasan-use-stack_trace_save_shadow.patch