From: kernel test robot <lkp@intel.com>
To: Alex Hung <alex.hung@amd.com>
Cc: oe-kbuild-all@lists.linux.dev,
Alex Deucher <alexander.deucher@amd.com>,
Harry Wentland <harry.wentland@amd.com>
Subject: [linux-next:master 9139/11507] drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c:2393:9: sparse: sparse: Using plain integer as NULL pointer
Date: Sat, 01 Aug 2026 12:33:37 +0800 [thread overview]
Message-ID: <202608011221.LpiYHmLJ-lkp@intel.com> (raw)
tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: 415606a7be939835db9b0d6b711887586646346d
commit: 1d8cfeb69daa863a70134b8ed6df8055c418a5b0 [9139/11507] drm/amdgpu: Pack nested ucode_info struct
config: loongarch-randconfig-r112-20260731 (https://download.01.org/0day-ci/archive/20260801/202608011221.LpiYHmLJ-lkp@intel.com/config)
compiler: clang version 24.0.0git (https://github.com/llvm/llvm-project bacfe2950f8218268fcc0a8765644ea0c15f0360)
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260801/202608011221.LpiYHmLJ-lkp@intel.com/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@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202608011221.LpiYHmLJ-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c:1536:59: sparse: sparse: incorrect type in argument 2 (different address spaces) @@ expected void [noderef] __iomem *vaddr_iomem @@ got void *[addressable] kaddr @@
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c:1536:59: sparse: expected void [noderef] __iomem *vaddr_iomem
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c:1536:59: sparse: got void *[addressable] kaddr
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c:1550:9: sparse: sparse: cast removes address space '__iomem' of expression
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c:2393:9: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c:2393:9: sparse: sparse: cast removes address space '__user' of expression
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c:2393:9: sparse: sparse: incorrect type in initializer (different address spaces) @@ expected unsigned long long [noderef] [usertype] __user *const [noderef] __user *__p @@ got unsigned long long [noderef] [usertype] __user ** @@
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c:2393:9: sparse: expected unsigned long long [noderef] [usertype] __user *const [noderef] __user *__p
drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c:2393:9: sparse: got unsigned long long [noderef] [usertype] __user **
>> drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c:2393:9: sparse: sparse: Using plain integer as NULL pointer
vim +2393 drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_process.c
c2d2588c702364f Jonathan Kim 2022-04-08 2362
c2d2588c702364f Jonathan Kim 2022-04-08 2363 static void send_exception_work_handler(struct work_struct *work)
c2d2588c702364f Jonathan Kim 2022-04-08 2364 {
c2d2588c702364f Jonathan Kim 2022-04-08 2365 struct send_exception_work_handler_workarea *workarea;
c2d2588c702364f Jonathan Kim 2022-04-08 2366 struct kfd_process *p;
c2d2588c702364f Jonathan Kim 2022-04-08 2367 struct queue *q;
c2d2588c702364f Jonathan Kim 2022-04-08 2368 struct mm_struct *mm;
c2d2588c702364f Jonathan Kim 2022-04-08 2369 struct kfd_context_save_area_header __user *csa_header;
c2d2588c702364f Jonathan Kim 2022-04-08 2370 uint64_t __user *err_payload_ptr;
c2d2588c702364f Jonathan Kim 2022-04-08 2371 uint64_t cur_err;
c2d2588c702364f Jonathan Kim 2022-04-08 2372 uint32_t ev_id;
c2d2588c702364f Jonathan Kim 2022-04-08 2373
c2d2588c702364f Jonathan Kim 2022-04-08 2374 workarea = container_of(work,
c2d2588c702364f Jonathan Kim 2022-04-08 2375 struct send_exception_work_handler_workarea,
c2d2588c702364f Jonathan Kim 2022-04-08 2376 work);
c2d2588c702364f Jonathan Kim 2022-04-08 2377 p = workarea->p;
c2d2588c702364f Jonathan Kim 2022-04-08 2378
c2d2588c702364f Jonathan Kim 2022-04-08 2379 mm = get_task_mm(p->lead_thread);
c2d2588c702364f Jonathan Kim 2022-04-08 2380
c2d2588c702364f Jonathan Kim 2022-04-08 2381 if (!mm)
c2d2588c702364f Jonathan Kim 2022-04-08 2382 return;
c2d2588c702364f Jonathan Kim 2022-04-08 2383
c2d2588c702364f Jonathan Kim 2022-04-08 2384 kthread_use_mm(mm);
c2d2588c702364f Jonathan Kim 2022-04-08 2385
c2d2588c702364f Jonathan Kim 2022-04-08 2386 q = pqm_get_user_queue(&p->pqm, workarea->queue_id);
c2d2588c702364f Jonathan Kim 2022-04-08 2387
c2d2588c702364f Jonathan Kim 2022-04-08 2388 if (!q)
c2d2588c702364f Jonathan Kim 2022-04-08 2389 goto out;
c2d2588c702364f Jonathan Kim 2022-04-08 2390
c2d2588c702364f Jonathan Kim 2022-04-08 2391 csa_header = (void __user *)q->properties.ctx_save_restore_area_address;
c2d2588c702364f Jonathan Kim 2022-04-08 2392
c2d2588c702364f Jonathan Kim 2022-04-08 @2393 get_user(err_payload_ptr, (uint64_t __user **)&csa_header->err_payload_addr);
c2d2588c702364f Jonathan Kim 2022-04-08 2394 get_user(cur_err, err_payload_ptr);
c2d2588c702364f Jonathan Kim 2022-04-08 2395 cur_err |= workarea->error_reason;
c2d2588c702364f Jonathan Kim 2022-04-08 2396 put_user(cur_err, err_payload_ptr);
c2d2588c702364f Jonathan Kim 2022-04-08 2397 get_user(ev_id, &csa_header->err_event_id);
c2d2588c702364f Jonathan Kim 2022-04-08 2398
c2d2588c702364f Jonathan Kim 2022-04-08 2399 kfd_set_event(p, ev_id);
c2d2588c702364f Jonathan Kim 2022-04-08 2400
c2d2588c702364f Jonathan Kim 2022-04-08 2401 out:
c2d2588c702364f Jonathan Kim 2022-04-08 2402 kthread_unuse_mm(mm);
c2d2588c702364f Jonathan Kim 2022-04-08 2403 mmput(mm);
c2d2588c702364f Jonathan Kim 2022-04-08 2404 }
c2d2588c702364f Jonathan Kim 2022-04-08 2405
:::::: The code at line 2393 was first introduced by commit
:::::: c2d2588c702364ff53916ddd97e2b26fd4f4a317 drm/amdkfd: add send exception operation
:::::: TO: Jonathan Kim <jonathan.kim@amd.com>
:::::: CC: Alex Deucher <alexander.deucher@amd.com>
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
reply other threads:[~2026-08-01 4:34 UTC|newest]
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