kevin/linux
1
Fork 0
Code

kmsan: do not pass NULL pointers as 0

Browse Source 
sparse complains about passing NULL pointers as 0.  Fix all instances.

Link: https://lkml.kernel.org/r/20240627145754.27333-3-iii@linux.ibm.com
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202406272033.KejtfLkw-lkp@intel.com/
Reviewed-by: Alexander Potapenko <glider@google.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Marco Elver <elver@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Ilya Leoshkevich 2024-06-27 16:57:47 +02:00 committed by Andrew Morton
parent b072880d69
commit b1a80f4be7
2 changed files with 10 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

15
mm/kmsan/hooks.c
View File

@ -303,7 +303,8 @@ void kmsan_handle_urb(const struct urb *urb, bool is_out)
if (is_out) if (is_out)
kmsan_internal_check_memory(urb->transfer_buffer, kmsan_internal_check_memory(urb->transfer_buffer,
urb->transfer_buffer_length, urb->transfer_buffer_length,
/*user_addr*/ 0, REASON_SUBMIT_URB); /*user_addr*/ NULL,
REASON_SUBMIT_URB);
else else
kmsan_internal_unpoison_memory(urb->transfer_buffer, kmsan_internal_unpoison_memory(urb->transfer_buffer,
urb->transfer_buffer_length, urb->transfer_buffer_length,
@ -316,14 +317,14 @@ static void kmsan_handle_dma_page(const void *addr, size_t size,
{ {
switch (dir) { switch (dir) {
case DMA_BIDIRECTIONAL: case DMA_BIDIRECTIONAL:
kmsan_internal_check_memory((void *)addr, size, /*user_addr*/ 0, kmsan_internal_check_memory((void *)addr, size,
REASON_ANY); /*user_addr*/ NULL, REASON_ANY);
kmsan_internal_unpoison_memory((void *)addr, size, kmsan_internal_unpoison_memory((void *)addr, size,
/*checked*/ false); /*checked*/ false);
break; break;
case DMA_TO_DEVICE: case DMA_TO_DEVICE:
kmsan_internal_check_memory((void *)addr, size, /*user_addr*/ 0, kmsan_internal_check_memory((void *)addr, size,
REASON_ANY); /*user_addr*/ NULL, REASON_ANY);
break; break;
case DMA_FROM_DEVICE: case DMA_FROM_DEVICE:
kmsan_internal_unpoison_memory((void *)addr, size, kmsan_internal_unpoison_memory((void *)addr, size,
@ -418,8 +419,8 @@ void kmsan_check_memory(const void *addr, size_t size)
{ {
if (!kmsan_enabled) if (!kmsan_enabled)
return; return;
return kmsan_internal_check_memory((void *)addr, size, /*user_addr*/ 0, return kmsan_internal_check_memory((void *)addr, size,
REASON_ANY); /*user_addr*/ NULL, REASON_ANY);
} }
EXPORT_SYMBOL(kmsan_check_memory); EXPORT_SYMBOL(kmsan_check_memory);

4
mm/kmsan/instrumentation.c
View File

@ -315,8 +315,8 @@ void __msan_warning(u32 origin)
if (!kmsan_enabled || kmsan_in_runtime()) if (!kmsan_enabled || kmsan_in_runtime())
return; return;
kmsan_enter_runtime(); kmsan_enter_runtime();
kmsan_report(origin, /*address*/ 0, /*size*/ 0, kmsan_report(origin, /*address*/ NULL, /*size*/ 0,
/*off_first*/ 0, /*off_last*/ 0, /*user_addr*/ 0, /*off_first*/ 0, /*off_last*/ 0, /*user_addr*/ NULL,
REASON_ANY); REASON_ANY);
kmsan_leave_runtime(); kmsan_leave_runtime();
} }