include/trace/events/dma_fence.h:12:1: sparse: sparse: incorrect type in argument 1 (different address spaces)

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head:   ba36dd5ee6fd4643ebbf6ee6eefcecf0b07e35c7
commit: 506aa8b02a8d6898c64cc095d233fbae1cef8b8a dma-fence: Add safe access helpers and document the rules
date:   5 months ago
config: sh-randconfig-r121-20251101 (https://download.01.org/0day-ci/archive/20251101/202511011126.rb1fMBjX-lkp@xxxxxxxxx/config)
compiler: sh4-linux-gcc (GCC) 14.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20251101/202511011126.rb1fMBjX-lkp@xxxxxxxxx/reproduce)

If you fix the issue in a separate patch/commit (i.e. not just a new version of
the same patch/commit), kindly add following tags
| Reported-by: kernel test robot <lkp@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202511011126.rb1fMBjX-lkp@xxxxxxxxx/

sparse warnings: (new ones prefixed by >>)
   drivers/dma-buf/dma-fence.c:1112:51: sparse: sparse: incorrect type in return expression (different address spaces) @@     expected char const [noderef] __rcu * @@     got char const * @@
   drivers/dma-buf/dma-fence.c:1112:51: sparse:     expected char const [noderef] __rcu *
   drivers/dma-buf/dma-fence.c:1112:51: sparse:     got char const *
   drivers/dma-buf/dma-fence.c:1114:24: sparse: sparse: incorrect type in return expression (different address spaces) @@     expected char const [noderef] __rcu * @@     got char * @@
   drivers/dma-buf/dma-fence.c:1114:24: sparse:     expected char const [noderef] __rcu *
   drivers/dma-buf/dma-fence.c:1114:24: sparse:     got char *
   drivers/dma-buf/dma-fence.c:1144:51: sparse: sparse: incorrect type in return expression (different address spaces) @@     expected char const [noderef] __rcu * @@     got char const * @@
   drivers/dma-buf/dma-fence.c:1144:51: sparse:     expected char const [noderef] __rcu *
   drivers/dma-buf/dma-fence.c:1144:51: sparse:     got char const *
   drivers/dma-buf/dma-fence.c:1146:24: sparse: sparse: incorrect type in return expression (different address spaces) @@     expected char const [noderef] __rcu * @@     got char * @@
   drivers/dma-buf/dma-fence.c:1146:24: sparse:     expected char const [noderef] __rcu *
   drivers/dma-buf/dma-fence.c:1146:24: sparse:     got char *
   drivers/dma-buf/dma-fence.c: note: in included file (through include/trace/trace_events.h, include/trace/define_trace.h, include/trace/events/dma_fence.h):
>> include/trace/events/dma_fence.h:12:1: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected char const *str @@     got char const [noderef] __rcu * @@
   include/trace/events/dma_fence.h:12:1: sparse:     expected char const *str
   include/trace/events/dma_fence.h:12:1: sparse:     got char const [noderef] __rcu *
>> include/trace/events/dma_fence.h:12:1: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void const *driver_ptr_ @@     got char const [noderef] __rcu * @@
   include/trace/events/dma_fence.h:12:1: sparse:     expected void const *driver_ptr_
   include/trace/events/dma_fence.h:12:1: sparse:     got char const [noderef] __rcu *
>> include/trace/events/dma_fence.h:12:1: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected char const *str @@     got char const [noderef] __rcu * @@
   include/trace/events/dma_fence.h:12:1: sparse:     expected char const *str
   include/trace/events/dma_fence.h:12:1: sparse:     got char const [noderef] __rcu *
>> include/trace/events/dma_fence.h:12:1: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void const *timeline_ptr_ @@     got char const [noderef] __rcu * @@
   include/trace/events/dma_fence.h:12:1: sparse:     expected void const *timeline_ptr_
   include/trace/events/dma_fence.h:12:1: sparse:     got char const [noderef] __rcu *
>> include/trace/events/dma_fence.h:12:1: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected char const *str @@     got char const [noderef] __rcu * @@
   include/trace/events/dma_fence.h:12:1: sparse:     expected char const *str
   include/trace/events/dma_fence.h:12:1: sparse:     got char const [noderef] __rcu *
>> include/trace/events/dma_fence.h:12:1: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void const *driver_ptr_ @@     got char const [noderef] __rcu * @@
   include/trace/events/dma_fence.h:12:1: sparse:     expected void const *driver_ptr_
   include/trace/events/dma_fence.h:12:1: sparse:     got char const [noderef] __rcu *
>> include/trace/events/dma_fence.h:12:1: sparse: sparse: incorrect type in argument 1 (different address spaces) @@     expected char const *str @@     got char const [noderef] __rcu * @@
   include/trace/events/dma_fence.h:12:1: sparse:     expected char const *str
   include/trace/events/dma_fence.h:12:1: sparse:     got char const [noderef] __rcu *
>> include/trace/events/dma_fence.h:12:1: sparse: sparse: incorrect type in assignment (different address spaces) @@     expected void const *timeline_ptr_ @@     got char const [noderef] __rcu * @@
   include/trace/events/dma_fence.h:12:1: sparse:     expected void const *timeline_ptr_
   include/trace/events/dma_fence.h:12:1: sparse:     got char const [noderef] __rcu *

vim +12 include/trace/events/dma_fence.h

e941759c74a44d6 include/trace/events/fence.h     Maarten Lankhorst       2014-07-01  11  
f54d1867005c332 include/trace/events/dma_fence.h Chris Wilson            2016-10-25 @12  DECLARE_EVENT_CLASS(dma_fence,
e941759c74a44d6 include/trace/events/fence.h     Maarten Lankhorst       2014-07-01  13  
f54d1867005c332 include/trace/events/dma_fence.h Chris Wilson            2016-10-25  14  	TP_PROTO(struct dma_fence *fence),
e941759c74a44d6 include/trace/events/fence.h     Maarten Lankhorst       2014-07-01  15  
e941759c74a44d6 include/trace/events/fence.h     Maarten Lankhorst       2014-07-01  16  	TP_ARGS(fence),
e941759c74a44d6 include/trace/events/fence.h     Maarten Lankhorst       2014-07-01  17  
e941759c74a44d6 include/trace/events/fence.h     Maarten Lankhorst       2014-07-01  18  	TP_STRUCT__entry(
ecec875a6c33790 include/trace/events/dma_fence.h Tvrtko Ursulin          2025-05-15  19  		__string(driver, dma_fence_driver_name(fence))
ecec875a6c33790 include/trace/events/dma_fence.h Tvrtko Ursulin          2025-05-15  20  		__string(timeline, dma_fence_timeline_name(fence))
e941759c74a44d6 include/trace/events/fence.h     Maarten Lankhorst       2014-07-01  21  		__field(unsigned int, context)
e941759c74a44d6 include/trace/events/fence.h     Maarten Lankhorst       2014-07-01  22  		__field(unsigned int, seqno)
e941759c74a44d6 include/trace/events/fence.h     Maarten Lankhorst       2014-07-01  23  	),
e941759c74a44d6 include/trace/events/fence.h     Maarten Lankhorst       2014-07-01  24  
e941759c74a44d6 include/trace/events/fence.h     Maarten Lankhorst       2014-07-01  25  	TP_fast_assign(
2c92ca849fcc6ee include/trace/events/dma_fence.h Steven Rostedt (Google  2024-05-16  26) 		__assign_str(driver);
2c92ca849fcc6ee include/trace/events/dma_fence.h Steven Rostedt (Google  2024-05-16  27) 		__assign_str(timeline);
e941759c74a44d6 include/trace/events/fence.h     Maarten Lankhorst       2014-07-01  28  		__entry->context = fence->context;
e941759c74a44d6 include/trace/events/fence.h     Maarten Lankhorst       2014-07-01  29  		__entry->seqno = fence->seqno;
e941759c74a44d6 include/trace/events/fence.h     Maarten Lankhorst       2014-07-01  30  	),
e941759c74a44d6 include/trace/events/fence.h     Maarten Lankhorst       2014-07-01  31  
e941759c74a44d6 include/trace/events/fence.h     Maarten Lankhorst       2014-07-01  32  	TP_printk("driver=%s timeline=%s context=%u seqno=%u",
e941759c74a44d6 include/trace/events/fence.h     Maarten Lankhorst       2014-07-01  33  		  __get_str(driver), __get_str(timeline), __entry->context,
e941759c74a44d6 include/trace/events/fence.h     Maarten Lankhorst       2014-07-01  34  		  __entry->seqno)
e941759c74a44d6 include/trace/events/fence.h     Maarten Lankhorst       2014-07-01  35  );
e941759c74a44d6 include/trace/events/fence.h     Maarten Lankhorst       2014-07-01  36  

:::::: The code at line 12 was first introduced by commit
:::::: f54d1867005c3323f5d8ad83eed823e84226c429 dma-buf: Rename struct fence to dma_fence

:::::: TO: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
:::::: CC: Daniel Vetter <daniel.vetter@xxxxxxxx>

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