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Message-ID: <20240627145754.27333-2-iii@linux.ibm.com>
Date: Thu, 27 Jun 2024 16:57:46 +0200
From: Ilya Leoshkevich <iii@...ux.ibm.com>
To: Alexander Potapenko <glider@...gle.com>, Marco Elver <elver@...gle.com>,
Dmitry Vyukov <dvyukov@...gle.com>,
Andrew Morton <akpm@...ux-foundation.org>
Cc: kasan-dev@...glegroups.com, linux-mm@...ck.org,
linux-kernel@...r.kernel.org, Ilya Leoshkevich <iii@...ux.ibm.com>,
kernel test robot <lkp@...el.com>
Subject: [PATCH 1/2] kmsan: add missing __user tags
sparse complains that __user pointers are being passed to functions
that expect non-__user ones. In all cases, these functions are in fact
working with user pointers, only the tag is missing. Add it.
Reported-by: kernel test robot <lkp@...el.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202406272033.KejtfLkw-lkp@intel.com/
Signed-off-by: Ilya Leoshkevich <iii@...ux.ibm.com>
---
mm/kmsan/core.c | 4 ++--
mm/kmsan/kmsan.h | 6 +++---
mm/kmsan/report.c | 2 +-
3 files changed, 6 insertions(+), 6 deletions(-)
diff --git a/mm/kmsan/core.c b/mm/kmsan/core.c
index 81b22220711a..a495debf1436 100644
--- a/mm/kmsan/core.c
+++ b/mm/kmsan/core.c
@@ -249,8 +249,8 @@ struct page *kmsan_vmalloc_to_page_or_null(void *vaddr)
return NULL;
}
-void kmsan_internal_check_memory(void *addr, size_t size, const void *user_addr,
- int reason)
+void kmsan_internal_check_memory(void *addr, size_t size,
+ const void __user *user_addr, int reason)
{
depot_stack_handle_t cur_origin = 0, new_origin = 0;
unsigned long addr64 = (unsigned long)addr;
diff --git a/mm/kmsan/kmsan.h b/mm/kmsan/kmsan.h
index 91a360a31e85..29555a8bc315 100644
--- a/mm/kmsan/kmsan.h
+++ b/mm/kmsan/kmsan.h
@@ -73,7 +73,7 @@ void kmsan_print_origin(depot_stack_handle_t origin);
* @off_last corresponding to different @origin values.
*/
void kmsan_report(depot_stack_handle_t origin, void *address, int size,
- int off_first, int off_last, const void *user_addr,
+ int off_first, int off_last, const void __user *user_addr,
enum kmsan_bug_reason reason);
DECLARE_PER_CPU(struct kmsan_ctx, kmsan_percpu_ctx);
@@ -163,8 +163,8 @@ depot_stack_handle_t kmsan_internal_chain_origin(depot_stack_handle_t id);
void kmsan_internal_task_create(struct task_struct *task);
bool kmsan_metadata_is_contiguous(void *addr, size_t size);
-void kmsan_internal_check_memory(void *addr, size_t size, const void *user_addr,
- int reason);
+void kmsan_internal_check_memory(void *addr, size_t size,
+ const void __user *user_addr, int reason);
struct page *kmsan_vmalloc_to_page_or_null(void *vaddr);
void kmsan_setup_meta(struct page *page, struct page *shadow,
diff --git a/mm/kmsan/report.c b/mm/kmsan/report.c
index 92e73ec61435..94a3303fb65e 100644
--- a/mm/kmsan/report.c
+++ b/mm/kmsan/report.c
@@ -148,7 +148,7 @@ void kmsan_print_origin(depot_stack_handle_t origin)
}
void kmsan_report(depot_stack_handle_t origin, void *address, int size,
- int off_first, int off_last, const void *user_addr,
+ int off_first, int off_last, const void __user *user_addr,
enum kmsan_bug_reason reason)
{
unsigned long stack_entries[KMSAN_STACK_DEPTH];
--
2.45.2
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