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Message-ID: <20240627145754.27333-3-iii@linux.ibm.com>
Date: Thu, 27 Jun 2024 16:57:47 +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 2/2] kmsan: do not pass NULL pointers as 0
sparse complains about passing NULL pointers as 0. Fix all instances.
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/hooks.c | 15 ++++++++-------
mm/kmsan/instrumentation.c | 4 ++--
2 files changed, 10 insertions(+), 9 deletions(-)
diff --git a/mm/kmsan/hooks.c b/mm/kmsan/hooks.c
index 26d86dfdc819..3ea50f09311f 100644
--- a/mm/kmsan/hooks.c
+++ b/mm/kmsan/hooks.c
@@ -303,7 +303,8 @@ void kmsan_handle_urb(const struct urb *urb, bool is_out)
if (is_out)
kmsan_internal_check_memory(urb->transfer_buffer,
urb->transfer_buffer_length,
- /*user_addr*/ 0, REASON_SUBMIT_URB);
+ /*user_addr*/ NULL,
+ REASON_SUBMIT_URB);
else
kmsan_internal_unpoison_memory(urb->transfer_buffer,
urb->transfer_buffer_length,
@@ -316,14 +317,14 @@ static void kmsan_handle_dma_page(const void *addr, size_t size,
{
switch (dir) {
case DMA_BIDIRECTIONAL:
- kmsan_internal_check_memory((void *)addr, size, /*user_addr*/ 0,
- REASON_ANY);
+ kmsan_internal_check_memory((void *)addr, size,
+ /*user_addr*/ NULL, REASON_ANY);
kmsan_internal_unpoison_memory((void *)addr, size,
/*checked*/ false);
break;
case DMA_TO_DEVICE:
- kmsan_internal_check_memory((void *)addr, size, /*user_addr*/ 0,
- REASON_ANY);
+ kmsan_internal_check_memory((void *)addr, size,
+ /*user_addr*/ NULL, REASON_ANY);
break;
case DMA_FROM_DEVICE:
kmsan_internal_unpoison_memory((void *)addr, size,
@@ -418,8 +419,8 @@ void kmsan_check_memory(const void *addr, size_t size)
{
if (!kmsan_enabled)
return;
- return kmsan_internal_check_memory((void *)addr, size, /*user_addr*/ 0,
- REASON_ANY);
+ return kmsan_internal_check_memory((void *)addr, size,
+ /*user_addr*/ NULL, REASON_ANY);
}
EXPORT_SYMBOL(kmsan_check_memory);
diff --git a/mm/kmsan/instrumentation.c b/mm/kmsan/instrumentation.c
index 94b49fac9d8b..02a405e55d6c 100644
--- a/mm/kmsan/instrumentation.c
+++ b/mm/kmsan/instrumentation.c
@@ -315,8 +315,8 @@ void __msan_warning(u32 origin)
if (!kmsan_enabled || kmsan_in_runtime())
return;
kmsan_enter_runtime();
- kmsan_report(origin, /*address*/ 0, /*size*/ 0,
- /*off_first*/ 0, /*off_last*/ 0, /*user_addr*/ 0,
+ kmsan_report(origin, /*address*/ NULL, /*size*/ 0,
+ /*off_first*/ 0, /*off_last*/ 0, /*user_addr*/ NULL,
REASON_ANY);
kmsan_leave_runtime();
}
--
2.45.2
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