drivers/misc/sgi-gru/grukdump.c:60:17: sparse: sparse: incorrect type in argument 1 (different address spaces)

From: kernel test robot
Date: Fri Nov 17 2023 - 20:56:00 EST

tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
head: 791c8ab095f71327899023223940dd52257a4173
commit: 4ec4190be4cf9cc3e0ccaf5f155a5f9066d18950 kasan, x86: don't rename memintrinsics in uninstrumented files
date: 9 months ago
config: x86_64-randconfig-123-20231118 (https://download.01.org/0day-ci/archive/20231118/202311180934.gY2s81r5-lkp@xxxxxxxxx/config)
compiler: gcc-11 (Debian 11.3.0-12) 11.3.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20231118/202311180934.gY2s81r5-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/202311180934.gY2s81r5-lkp@xxxxxxxxx/

sparse warnings: (new ones prefixed by >>)
drivers/misc/sgi-gru/grukdump.c:60:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const * @@ got void [noderef] __user *[addressable] ubuf @@
drivers/misc/sgi-gru/grukdump.c:60:17: sparse: expected void const *
drivers/misc/sgi-gru/grukdump.c:60:17: sparse: got void [noderef] __user *[addressable] ubuf
drivers/misc/sgi-gru/grukdump.c:60:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void const * @@ got void [noderef] __user *[addressable] ubuf @@
drivers/misc/sgi-gru/grukdump.c:60:17: sparse: expected void const *
drivers/misc/sgi-gru/grukdump.c:60:17: sparse: got void [noderef] __user *[addressable] ubuf
>> drivers/misc/sgi-gru/grukdump.c:60:17: sparse: sparse: incorrect type in argument 1 (different address spaces) @@ expected void *p @@ got void [noderef] __user *[addressable] ubuf @@
drivers/misc/sgi-gru/grukdump.c:60:17: sparse: expected void *p
drivers/misc/sgi-gru/grukdump.c:60:17: sparse: got void [noderef] __user *[addressable] ubuf
drivers/misc/sgi-gru/grukdump.c:129:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected struct gru_context_configuration_handle *ubufcch @@ got void [noderef] __user *[assigned] ubuf @@
drivers/misc/sgi-gru/grukdump.c:129:17: sparse: expected struct gru_context_configuration_handle *ubufcch
drivers/misc/sgi-gru/grukdump.c:129:17: sparse: got void [noderef] __user *[assigned] ubuf
drivers/misc/sgi-gru/grukdump.c:192:14: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __user *ubuf @@ got void *[addressable] [assigned] buf @@
drivers/misc/sgi-gru/grukdump.c:192:14: sparse: expected void [noderef] __user *ubuf
drivers/misc/sgi-gru/grukdump.c:192:14: sparse: got void *[addressable] [assigned] buf
drivers/misc/sgi-gru/grukdump.c:193:17: sparse: sparse: incorrect type in assignment (different address spaces) @@ expected void [noderef] __user *ubufend @@ got void * @@
drivers/misc/sgi-gru/grukdump.c:193:17: sparse: expected void [noderef] __user *ubufend
drivers/misc/sgi-gru/grukdump.c:193:17: sparse: got void *

vim +60 drivers/misc/sgi-gru/grukdump.c

9cc9b056ea5160 Jack Steiner 2009-06-17 34
9cc9b056ea5160 Jack Steiner 2009-06-17 35 static int gru_dump_context_data(void *grubase,
9cc9b056ea5160 Jack Steiner 2009-06-17 36 struct gru_context_configuration_handle *cch,
b8229bedd1f397 Jack Steiner 2009-12-15 37 void __user *ubuf, int ctxnum, int dsrcnt,
b8229bedd1f397 Jack Steiner 2009-12-15 38 int flush_cbrs)
9cc9b056ea5160 Jack Steiner 2009-06-17 39 {
9cc9b056ea5160 Jack Steiner 2009-06-17 40 void *cb, *cbe, *tfh, *gseg;
9cc9b056ea5160 Jack Steiner 2009-06-17 41 int i, scr;
9cc9b056ea5160 Jack Steiner 2009-06-17 42
9cc9b056ea5160 Jack Steiner 2009-06-17 43 gseg = grubase + ctxnum * GRU_GSEG_STRIDE;
9cc9b056ea5160 Jack Steiner 2009-06-17 44 cb = gseg + GRU_CB_BASE;
9cc9b056ea5160 Jack Steiner 2009-06-17 45 cbe = grubase + GRU_CBE_BASE;
9cc9b056ea5160 Jack Steiner 2009-06-17 46 tfh = grubase + GRU_TFH_BASE;
9cc9b056ea5160 Jack Steiner 2009-06-17 47
9cc9b056ea5160 Jack Steiner 2009-06-17 48 for_each_cbr_in_allocation_map(i, &cch->cbr_allocation_map, scr) {
b8229bedd1f397 Jack Steiner 2009-12-15 49 if (flush_cbrs)
b8229bedd1f397 Jack Steiner 2009-12-15 50 gru_flush_cache(cb);
9cc9b056ea5160 Jack Steiner 2009-06-17 51 if (gru_user_copy_handle(&ubuf, cb))
9cc9b056ea5160 Jack Steiner 2009-06-17 52 goto fail;
9cc9b056ea5160 Jack Steiner 2009-06-17 53 if (gru_user_copy_handle(&ubuf, tfh + i * GRU_HANDLE_STRIDE))
9cc9b056ea5160 Jack Steiner 2009-06-17 54 goto fail;
9cc9b056ea5160 Jack Steiner 2009-06-17 55 if (gru_user_copy_handle(&ubuf, cbe + i * GRU_HANDLE_STRIDE))
9cc9b056ea5160 Jack Steiner 2009-06-17 56 goto fail;
9cc9b056ea5160 Jack Steiner 2009-06-17 57 cb += GRU_HANDLE_STRIDE;
9cc9b056ea5160 Jack Steiner 2009-06-17 58 }
9cc9b056ea5160 Jack Steiner 2009-06-17 59 if (dsrcnt)
9cc9b056ea5160 Jack Steiner 2009-06-17 @60 memcpy(ubuf, gseg + GRU_DS_BASE, dsrcnt * GRU_HANDLE_STRIDE);
9cc9b056ea5160 Jack Steiner 2009-06-17 61 return 0;
9cc9b056ea5160 Jack Steiner 2009-06-17 62
9cc9b056ea5160 Jack Steiner 2009-06-17 63 fail:
9cc9b056ea5160 Jack Steiner 2009-06-17 64 return -EFAULT;
9cc9b056ea5160 Jack Steiner 2009-06-17 65 }
9cc9b056ea5160 Jack Steiner 2009-06-17 66

:::::: The code at line 60 was first introduced by commit
:::::: 9cc9b056ea51608788609d7e26c7db55ef81bb2e gru: dump chiplet state

:::::: TO: Jack Steiner <steiner@xxxxxxx>
:::::: CC: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>

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