The patch titled
Subject: kmsan: add missing __user tags
has been added to the -mm mm-unstable branch. Its filename is
kmsan-add-missing-__user-tags.patch
This patch will shortly appear at
https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/kmsan-add-missing-__user-tags.patch
This patch will later appear in the mm-unstable branch at
git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
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------------------------------------------------------
From: Ilya Leoshkevich <iii@xxxxxxxxxxxxx>
Subject: kmsan: add missing __user tags
Date: Thu, 27 Jun 2024 16:57:46 +0200
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.
Link: https://lkml.kernel.org/r/20240627145754.27333-2-iii@xxxxxxxxxxxxx
Signed-off-by: Ilya Leoshkevich <iii@xxxxxxxxxxxxx>
Reported-by: kernel test robot <lkp@xxxxxxxxx>
Closes: https://lore.kernel.org/oe-kbuild-all/202406272033.KejtfLkw-lkp@xxxxxxxxx/
Cc: Alexander Potapenko <glider@xxxxxxxxxx>
Cc: Dmitry Vyukov <dvyukov@xxxxxxxxxx>
Cc: Marco Elver <elver@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/kmsan/core.c | 4 ++--
mm/kmsan/kmsan.h | 6 +++---
mm/kmsan/report.c | 2 +-
3 files changed, 6 insertions(+), 6 deletions(-)
--- a/mm/kmsan/core.c~kmsan-add-missing-__user-tags
+++ a/mm/kmsan/core.c
@@ -249,8 +249,8 @@ struct page *kmsan_vmalloc_to_page_or_nu
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;
--- a/mm/kmsan/kmsan.h~kmsan-add-missing-__user-tags
+++ a/mm/kmsan/kmsan.h
@@ -73,7 +73,7 @@ void kmsan_print_origin(depot_stack_hand
* @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_chai
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,
--- a/mm/kmsan/report.c~kmsan-add-missing-__user-tags
+++ a/mm/kmsan/report.c
@@ -148,7 +148,7 @@ void kmsan_print_origin(depot_stack_hand
}
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];
_
Patches currently in -mm which might be from iii@xxxxxxxxxxxxx are
ftrace-unpoison-ftrace_regs-in-ftrace_ops_list_func.patch
kmsan-make-the-tests-compatible-with-kmsanpanic=1.patch
kmsan-disable-kmsan-when-deferred_struct_page_init-is-enabled.patch
kmsan-increase-the-maximum-store-size-to-4096.patch
kmsan-fix-is_bad_asm_addr-on-arches-with-overlapping-address-spaces.patch
kmsan-fix-kmsan_copy_to_user-on-arches-with-overlapping-address-spaces.patch
kmsan-remove-a-useless-assignment-from-kmsan_vmap_pages_range_noflush.patch
kmsan-remove-an-x86-specific-include-from-kmsanh.patch
kmsan-expose-kmsan_get_metadata.patch
kmsan-export-panic_on_kmsan.patch
kmsan-allow-disabling-kmsan-checks-for-the-current-task.patch
kmsan-introduce-memset_no_sanitize_memory.patch
kmsan-support-slab_poison.patch
kmsan-use-align_down-in-kmsan_get_metadata.patch
kmsan-do-not-round-up-pg_data_t-size.patch
kmsan-expose-kmsan_warn_on.patch
mm-slub-let-kmsan-access-metadata.patch
mm-slub-disable-kmsan-when-checking-the-padding-bytes.patch
mm-kfence-disable-kmsan-when-checking-the-canary.patch
lib-zlib-unpoison-dfltcc-output-buffers.patch
kmsan-accept-ranges-starting-with-0-on-s390.patch
s390-boot-turn-off-kmsan.patch
s390-use-a-larger-stack-for-kmsan.patch
s390-boot-add-the-kmsan-runtime-stub.patch
s390-checksum-add-a-kmsan-check.patch
s390-cpacf-unpoison-the-results-of-cpacf_trng.patch
s390-cpumf-unpoison-stcctm-output-buffer.patch
s390-diag-unpoison-diag224-output-buffer.patch
s390-ftrace-unpoison-ftrace_regs-in-kprobe_ftrace_handler.patch
s390-irqflags-do-not-instrument-arch_local_irq_-with-kmsan.patch
s390-mm-define-kmsan-metadata-for-vmalloc-and-modules.patch
s390-string-add-kmsan-support.patch
s390-traps-unpoison-the-kernel_stack_overflows-pt_regs.patch
s390-uaccess-add-kmsan-support-to-put_user-and-get_user.patch
s390-uaccess-add-the-missing-linux-instrumentedh-include.patch
s390-unwind-disable-kmsan-checks.patch
s390-kmsan-implement-the-architecture-specific-functions.patch
kmsan-enable-on-s390.patch
kmsan-add-missing-__user-tags.patch
kmsan-do-not-pass-null-pointers-as-0.patch
