* [jolsa-perf:bp 3/4] kernel/trace/bpf_trace.c:3566:9: error: call to undeclared function 'hw_breakpoint_modify'; ISO C99 and later do not support implicit function declarations
@ 2024-07-22 16:09 kernel test robot
0 siblings, 0 replies; only message in thread
From: kernel test robot @ 2024-07-22 16:09 UTC (permalink / raw)
To: Jiri Olsa; +Cc: llvm, oe-kbuild-all
tree: https://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git bp
head: b45f92fe92ab4e5bf3568b81df7d7a4c7a52acbe
commit: 4e7d975bf8e514543825578dd810d04770bee181 [3/4] add bpf_bp_modify_address kfunc
config: s390-allmodconfig (https://download.01.org/0day-ci/archive/20240723/202407230034.oKNTq3kB-lkp@intel.com/config)
compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project ad154281230d83ee551e12d5be48bb956ef47ed3)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240723/202407230034.oKNTq3kB-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/202407230034.oKNTq3kB-lkp@intel.com/
All errors (new ones prefixed by >>):
548 | val = __raw_readb(PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:561:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
561 | val = __le16_to_cpu((__le16 __force)__raw_readw(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:37:59: note: expanded from macro '__le16_to_cpu'
37 | #define __le16_to_cpu(x) __swab16((__force __u16)(__le16)(x))
| ^
include/uapi/linux/swab.h:102:54: note: expanded from macro '__swab16'
102 | #define __swab16(x) (__u16)__builtin_bswap16((__u16)(x))
| ^
In file included from kernel/trace/bpf_trace.c:9:
In file included from include/linux/bpf_verifier.h:9:
In file included from include/linux/filter.h:12:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:93:
include/asm-generic/io.h:574:61: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
574 | val = __le32_to_cpu((__le32 __force)__raw_readl(PCI_IOBASE + addr));
| ~~~~~~~~~~ ^
include/uapi/linux/byteorder/big_endian.h:35:59: note: expanded from macro '__le32_to_cpu'
35 | #define __le32_to_cpu(x) __swab32((__force __u32)(__le32)(x))
| ^
include/uapi/linux/swab.h:115:54: note: expanded from macro '__swab32'
115 | #define __swab32(x) (__u32)__builtin_bswap32((__u32)(x))
| ^
In file included from kernel/trace/bpf_trace.c:9:
In file included from include/linux/bpf_verifier.h:9:
In file included from include/linux/filter.h:12:
In file included from include/linux/skbuff.h:28:
In file included from include/linux/dma-mapping.h:11:
In file included from include/linux/scatterlist.h:9:
In file included from arch/s390/include/asm/io.h:93:
include/asm-generic/io.h:585:33: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
585 | __raw_writeb(value, PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:595:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
595 | __raw_writew((u16 __force)cpu_to_le16(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:605:59: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
605 | __raw_writel((u32 __force)cpu_to_le32(value), PCI_IOBASE + addr);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:693:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
693 | readsb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:701:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
701 | readsw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:709:20: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
709 | readsl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:718:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
718 | writesb(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:727:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
727 | writesw(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
include/asm-generic/io.h:736:21: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
736 | writesl(PCI_IOBASE + addr, buffer, count);
| ~~~~~~~~~~ ^
kernel/trace/bpf_trace.c:357:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
357 | .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/trace/bpf_trace.c:403:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
403 | .arg1_type = ARG_PTR_TO_MEM | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/trace/bpf_trace.c:458:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
458 | .arg1_type = ARG_PTR_TO_MEM | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/trace/bpf_trace.c:460:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
460 | .arg3_type = ARG_PTR_TO_MEM | PTR_MAYBE_NULL | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~
kernel/trace/bpf_trace.c:502:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
502 | .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/trace/bpf_trace.c:504:35: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
504 | .arg4_type = ARG_PTR_TO_MEM | PTR_MAYBE_NULL | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~~~~
kernel/trace/bpf_trace.c:519:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
519 | .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/trace/bpf_trace.c:543:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
543 | .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/trace/bpf_trace.c:707:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
707 | .arg4_type = ARG_PTR_TO_MEM | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/trace/bpf_trace.c:1033:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
1033 | .arg3_type = ARG_PTR_TO_MEM | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/trace/bpf_trace.c:1728:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
1728 | .arg4_type = ARG_PTR_TO_MEM | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/trace/bpf_trace.c:1953:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
1953 | .arg4_type = ARG_PTR_TO_MEM | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
kernel/trace/bpf_trace.c:2008:30: warning: bitwise operation between different enumeration types ('enum bpf_arg_type' and 'enum bpf_type_flag') [-Wenum-enum-conversion]
2008 | .arg2_type = ARG_PTR_TO_MEM | MEM_RDONLY,
| ~~~~~~~~~~~~~~ ^ ~~~~~~~~~~
>> kernel/trace/bpf_trace.c:3566:9: error: call to undeclared function 'hw_breakpoint_modify'; ISO C99 and later do not support implicit function declarations [-Wimplicit-function-declaration]
3566 | return hw_breakpoint_modify(event, addr);
| ^
30 warnings and 1 error generated.
vim +/hw_breakpoint_modify +3566 kernel/trace/bpf_trace.c
3540
3541 __bpf_kfunc int bpf_bp_modify_addr(const struct bpf_map *map, u64 flags, unsigned long addr)
3542 {
3543 struct bpf_array *array = container_of(map, struct bpf_array, map);
3544 unsigned int cpu = smp_processor_id();
3545 u64 index = flags & BPF_F_INDEX_MASK;
3546 struct bpf_event_entry *ee;
3547 struct perf_event *event;
3548
3549 if (index == BPF_F_CURRENT_CPU)
3550 index = cpu;
3551
3552 if (unlikely(index >= array->map.max_entries))
3553 return -E2BIG;
3554
3555 ee = READ_ONCE(array->ptrs[index]);
3556 if (!ee)
3557 return -ENOENT;
3558
3559 event = ee->event;
3560 if (unlikely(event->attr.type != PERF_TYPE_BREAKPOINT))
3561 return -EINVAL;
3562
3563 if (unlikely(event->oncpu != cpu))
3564 return -EOPNOTSUPP;
3565
> 3566 return hw_breakpoint_modify(event, addr);
3567 }
3568
--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki
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2024-07-22 16:09 [jolsa-perf:bp 3/4] kernel/trace/bpf_trace.c:3566:9: error: call to undeclared function 'hw_breakpoint_modify'; ISO C99 and later do not support implicit function declarations kernel test robot
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