From 0b7ccc70ee1d5b499d1626c9d28f729507b1c036 Mon Sep 17 00:00:00 2001 From: Andrey Konovalov Date: Thu, 24 Mar 2022 18:10:55 -0700 Subject: kasan, vmalloc: drop outdated VM_KASAN comment The comment about VM_KASAN in include/linux/vmalloc.c is outdated. VM_KASAN is currently only used to mark vm_areas allocated for kernel modules when CONFIG_KASAN_VMALLOC is disabled. Drop the comment. Link: https://lkml.kernel.org/r/780395afea83a147b3b5acc36cf2e38f7f8479f9.1643047180.git.andreyknvl@google.com Signed-off-by: Andrey Konovalov Reviewed-by: Alexander Potapenko Acked-by: Marco Elver Cc: Andrey Ryabinin Cc: Catalin Marinas Cc: Dmitry Vyukov Cc: Evgenii Stepanov Cc: Mark Rutland Cc: Peter Collingbourne Cc: Vincenzo Frascino Cc: Will Deacon Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/linux/vmalloc.h | 11 ----------- 1 file changed, 11 deletions(-) (limited to 'include/linux/vmalloc.h') diff --git a/include/linux/vmalloc.h b/include/linux/vmalloc.h index 5a0c3b556848..2ca95c7db463 100644 --- a/include/linux/vmalloc.h +++ b/include/linux/vmalloc.h @@ -35,17 +35,6 @@ struct notifier_block; /* in notifier.h */ #define VM_DEFER_KMEMLEAK 0 #endif -/* - * VM_KASAN is used slightly differently depending on CONFIG_KASAN_VMALLOC. - * - * If IS_ENABLED(CONFIG_KASAN_VMALLOC), VM_KASAN is set on a vm_struct after - * shadow memory has been mapped. It's used to handle allocation errors so that - * we don't try to poison shadow on free if it was never allocated. - * - * Otherwise, VM_KASAN is set for kasan_module_alloc() allocations and used to - * determine which allocations need the module shadow freed. - */ - /* bits [20..32] reserved for arch specific ioremap internals */ /* -- cgit v1.2.3-59-g8ed1b