[arm:ktext-current 1/19] kernel/scs.c:46:47: sparse: sparse: incompatible types in comparison expression (different type sizes):
kernel test robot
lkp at intel.com
Mon Jul 17 17:47:42 PDT 2023
tree: git://git.armlinux.org.uk/~rmk/linux-arm.git ktext-current
head: 49e3458967802a6981190b5a1fa9fd66dbf58f8c
commit: 631e7c45f5d4cf043cd236a921c341e3dd9f1909 [1/19] arm64: place kernel in its own L0 page table entry
config: arm64-randconfig-r083-20230717 (https://download.01.org/0day-ci/archive/20230718/202307180826.AwqM3ku6-lkp@intel.com/config)
compiler: aarch64-linux-gcc (GCC) 12.3.0
reproduce: (https://download.01.org/0day-ci/archive/20230718/202307180826.AwqM3ku6-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 at intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202307180826.AwqM3ku6-lkp@intel.com/
sparse warnings: (new ones prefixed by >>)
>> kernel/scs.c:46:47: sparse: sparse: incompatible types in comparison expression (different type sizes):
>> kernel/scs.c:46:47: sparse: unsigned int *
>> kernel/scs.c:46:47: sparse: unsigned long *
--
>> lib/test_debug_virtual.c:27:22: sparse: sparse: incompatible types in comparison expression (different type sizes):
>> lib/test_debug_virtual.c:27:22: sparse: unsigned int *
>> lib/test_debug_virtual.c:27:22: sparse: unsigned long *
>> lib/test_debug_virtual.c:27:15: sparse: sparse: cast from unknown type
--
>> arch/arm64/kernel/module.c:79:9: sparse: sparse: incompatible types in comparison expression (different type sizes):
>> arch/arm64/kernel/module.c:79:9: sparse: unsigned int *
>> arch/arm64/kernel/module.c:79:9: sparse: unsigned long *
>> arch/arm64/kernel/module.c:79:9: sparse: sparse: incompatible types in comparison expression (different type sizes):
>> arch/arm64/kernel/module.c:79:9: sparse: unsigned int *
>> arch/arm64/kernel/module.c:79:9: sparse: unsigned long *
--
>> arch/arm64/net/bpf_jit_comp.c:1622:30: sparse: sparse: incompatible types in comparison expression (different type sizes):
>> arch/arm64/net/bpf_jit_comp.c:1622:30: sparse: unsigned int *
>> arch/arm64/net/bpf_jit_comp.c:1622:30: sparse: unsigned long *
--
arch/arm64/kernel/probes/kprobes.c:102:21: sparse: sparse: cast to restricted __le32
arch/arm64/kernel/probes/kprobes.c:102:21: sparse: sparse: cast to restricted __le32
arch/arm64/kernel/probes/kprobes.c:102:21: sparse: sparse: cast to restricted __le32
arch/arm64/kernel/probes/kprobes.c:102:21: sparse: sparse: cast to restricted __le32
arch/arm64/kernel/probes/kprobes.c:102:21: sparse: sparse: cast to restricted __le32
arch/arm64/kernel/probes/kprobes.c:102:21: sparse: sparse: cast to restricted __le32
>> arch/arm64/kernel/probes/kprobes.c:134:51: sparse: sparse: incompatible types in comparison expression (different type sizes):
>> arch/arm64/kernel/probes/kprobes.c:134:51: sparse: unsigned int *
>> arch/arm64/kernel/probes/kprobes.c:134:51: sparse: unsigned long *
--
>> kernel/module/main.c:1607:46: sparse: sparse: incompatible types in comparison expression (different type sizes):
>> kernel/module/main.c:1607:46: sparse: unsigned int *
>> kernel/module/main.c:1607:46: sparse: unsigned long *
--
kernel/bpf/core.c:232:49: sparse: sparse: arithmetics on pointers to functions
>> kernel/bpf/core.c:965:16: sparse: sparse: incompatible types in comparison expression (different type sizes):
>> kernel/bpf/core.c:965:16: sparse: unsigned int *
>> kernel/bpf/core.c:965:16: sparse: unsigned long *
kernel/bpf/core.c:965:30: sparse: sparse: incompatible types in comparison expression (different type sizes):
kernel/bpf/core.c:965:30: sparse: unsigned int *
kernel/bpf/core.c:965:30: sparse: unsigned long *
kernel/bpf/core.c: note: in included file (through include/trace/trace_events.h, include/trace/define_trace.h, include/trace/events/xdp.h, ...):
include/trace/events/xdp.h:320:1: sparse: sparse: Using plain integer as NULL pointer
include/trace/events/xdp.h:347:1: sparse: sparse: Using plain integer as NULL pointer
include/trace/events/xdp.h:381:1: sparse: sparse: Using plain integer as NULL pointer
kernel/bpf/core.c: note: in included file (through include/linux/rbtree_latch.h, include/linux/bpf.h, include/linux/filter.h):
include/linux/rbtree.h:74:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
include/linux/rbtree.h:74:9: sparse: struct rb_node [noderef] __rcu *
include/linux/rbtree.h:74:9: sparse: struct rb_node *
include/linux/rbtree.h:74:9: sparse: sparse: incompatible types in comparison expression (different address spaces):
include/linux/rbtree.h:74:9: sparse: struct rb_node [noderef] __rcu *
include/linux/rbtree.h:74:9: sparse: struct rb_node *
vim +46 kernel/scs.c
a2abe7cbd8fe2d Sami Tolvanen 2020-11-30 30
a2abe7cbd8fe2d Sami Tolvanen 2020-11-30 31 static void *__scs_alloc(int node)
a2abe7cbd8fe2d Sami Tolvanen 2020-11-30 32 {
a2abe7cbd8fe2d Sami Tolvanen 2020-11-30 33 int i;
a2abe7cbd8fe2d Sami Tolvanen 2020-11-30 34 void *s;
a2abe7cbd8fe2d Sami Tolvanen 2020-11-30 35
a2abe7cbd8fe2d Sami Tolvanen 2020-11-30 36 for (i = 0; i < NR_CACHED_SCS; i++) {
a2abe7cbd8fe2d Sami Tolvanen 2020-11-30 37 s = this_cpu_xchg(scs_cache[i], NULL);
a2abe7cbd8fe2d Sami Tolvanen 2020-11-30 38 if (s) {
f6e39794f4b6da Andrey Konovalov 2022-03-24 39 s = kasan_unpoison_vmalloc(s, SCS_SIZE,
f6e39794f4b6da Andrey Konovalov 2022-03-24 40 KASAN_VMALLOC_PROT_NORMAL);
a2abe7cbd8fe2d Sami Tolvanen 2020-11-30 41 memset(s, 0, SCS_SIZE);
f6e39794f4b6da Andrey Konovalov 2022-03-24 42 goto out;
a2abe7cbd8fe2d Sami Tolvanen 2020-11-30 43 }
a2abe7cbd8fe2d Sami Tolvanen 2020-11-30 44 }
a2abe7cbd8fe2d Sami Tolvanen 2020-11-30 45
f6e39794f4b6da Andrey Konovalov 2022-03-24 @46 s = __vmalloc_node_range(SCS_SIZE, 1, VMALLOC_START, VMALLOC_END,
a2abe7cbd8fe2d Sami Tolvanen 2020-11-30 47 GFP_SCS, PAGE_KERNEL, 0, node,
a2abe7cbd8fe2d Sami Tolvanen 2020-11-30 48 __builtin_return_address(0));
f6e39794f4b6da Andrey Konovalov 2022-03-24 49
f6e39794f4b6da Andrey Konovalov 2022-03-24 50 out:
f6e39794f4b6da Andrey Konovalov 2022-03-24 51 return kasan_reset_tag(s);
a2abe7cbd8fe2d Sami Tolvanen 2020-11-30 52 }
a2abe7cbd8fe2d Sami Tolvanen 2020-11-30 53
:::::: The code at line 46 was first introduced by commit
:::::: f6e39794f4b6da7ca9b77f2f9ad11fd6f0ac83e5 kasan, vmalloc: only tag normal vmalloc allocations
:::::: TO: Andrey Konovalov <andreyknvl at google.com>
:::::: CC: Linus Torvalds <torvalds at linux-foundation.org>
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