Not a kernel bug.

Fixed upstream in
https://github.com/iovisor/bcc/commit/eb7cdd28a45e48d9318b0cb3f35d1bb6f01a6611

duplicate of
https://bugs.launchpad.net/ubuntu/+source/bpfcc/+bug/2086183

** Changed in: linux-hwe-6.11 (Ubuntu)
       Status: New => Invalid

** Changed in: linux-hwe-6.11 (Ubuntu Noble)
       Status: Triaged => Invalid

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https://bugs.launchpad.net/bugs/2110161

Title:
  capable-bpfcc fails to launch due to bpf compilation error

Status in bpfcc package in Ubuntu:
  New
Status in linux-hwe-6.11 package in Ubuntu:
  Invalid
Status in bpfcc source package in Noble:
  New
Status in linux-hwe-6.11 source package in Noble:
  Invalid

Bug description:
  $ sudo capable-bpfcc
  [sudo] password for ryan-lee: 
  In file included from /virtual/main.c:14:
  In file included from include/uapi/linux/ptrace.h:183:
  In file included from arch/x86/include/asm/ptrace.h:175:
  In file included from arch/x86/include/asm/paravirt_types.h:12:
  In file included from arch/x86/include/asm/nospec-branch.h:15:
  arch/x86/include/asm/current.h:47:10: warning: multiple identical address 
spaces specified for type [-Wduplicate-decl-specifier]
     47 |                 return 
this_cpu_read_const(const_pcpu_hot.current_task);
        |                        ^
  arch/x86/include/asm/percpu.h:577:36: note: expanded from macro 
'this_cpu_read_const'
    577 | #define this_cpu_read_const(pcp)                        
__raw_cpu_read_const(pcp)
        |                                                         ^
  arch/x86/include/asm/percpu.h:163:35: note: expanded from macro 
'__raw_cpu_read_const'
    163 | #define __raw_cpu_read_const(pcp)       __raw_cpu_read(, , pcp)
        |                                         ^
  arch/x86/include/asm/percpu.h:155:30: note: expanded from macro 
'__raw_cpu_read'
    155 |         *(qual __my_cpu_type(pcp) *)__my_cpu_ptr(&(pcp));             
  \
        |                                     ^
  note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to 
see all)
  arch/x86/include/asm/percpu.h:94:40: note: expanded from macro '__my_cpu_type'
     94 | #define __my_cpu_type(var)      typeof(var) __percpu_seg_override
        |                                             ^
  arch/x86/include/asm/percpu.h:45:32: note: expanded from macro 
'__percpu_seg_override'
     45 | # define __percpu_seg_override  __seg_gs
        |                                 ^
  <built-in>:358:33: note: expanded from macro '__seg_gs'
    358 | #define __seg_gs __attribute__((address_space(256)))
        |                                 ^
  In file included from /virtual/main.c:14:
  In file included from include/uapi/linux/ptrace.h:183:
  In file included from arch/x86/include/asm/ptrace.h:175:
  In file included from arch/x86/include/asm/paravirt_types.h:12:
  In file included from arch/x86/include/asm/nospec-branch.h:15:
  arch/x86/include/asm/current.h:47:10: warning: multiple identical address 
spaces specified for type [-Wduplicate-decl-specifier]
  arch/x86/include/asm/percpu.h:577:36: note: expanded from macro 
'this_cpu_read_const'
    577 | #define this_cpu_read_const(pcp)                        
__raw_cpu_read_const(pcp)
        |                                                         ^
  arch/x86/include/asm/percpu.h:163:35: note: expanded from macro 
'__raw_cpu_read_const'
    163 | #define __raw_cpu_read_const(pcp)       __raw_cpu_read(, , pcp)
        |                                         ^
  arch/x86/include/asm/percpu.h:155:9: note: expanded from macro 
'__raw_cpu_read'
    155 |         *(qual __my_cpu_type(pcp) *)__my_cpu_ptr(&(pcp));             
  \
        |                ^
  arch/x86/include/asm/percpu.h:94:40: note: expanded from macro '__my_cpu_type'
     94 | #define __my_cpu_type(var)      typeof(var) __percpu_seg_override
        |                                             ^
  arch/x86/include/asm/percpu.h:45:32: note: expanded from macro 
'__percpu_seg_override'
     45 | # define __percpu_seg_override  __seg_gs
        |                                 ^
  <built-in>:358:33: note: expanded from macro '__seg_gs'
    358 | #define __seg_gs __attribute__((address_space(256)))
        |                                 ^
  In file included from /virtual/main.c:15:
  In file included from include/linux/sched.h:13:
  arch/x86/include/asm/processor.h:545:10: warning: multiple identical address 
spaces specified for type [-Wduplicate-decl-specifier]
    545 |                 return 
this_cpu_read_const(const_pcpu_hot.top_of_stack);
        |                        ^
  arch/x86/include/asm/percpu.h:577:36: note: expanded from macro 
'this_cpu_read_const'
    577 | #define this_cpu_read_const(pcp)                        
__raw_cpu_read_const(pcp)
        |                                                         ^
  arch/x86/include/asm/percpu.h:163:35: note: expanded from macro 
'__raw_cpu_read_const'
    163 | #define __raw_cpu_read_const(pcp)       __raw_cpu_read(, , pcp)
        |                                         ^
  arch/x86/include/asm/percpu.h:155:30: note: expanded from macro 
'__raw_cpu_read'
    155 |         *(qual __my_cpu_type(pcp) *)__my_cpu_ptr(&(pcp));             
  \
        |                                     ^
  note: (skipping 1 expansions in backtrace; use -fmacro-backtrace-limit=0 to 
see all)
  arch/x86/include/asm/percpu.h:94:40: note: expanded from macro '__my_cpu_type'
     94 | #define __my_cpu_type(var)      typeof(var) __percpu_seg_override
        |                                             ^
  arch/x86/include/asm/percpu.h:45:32: note: expanded from macro 
'__percpu_seg_override'
     45 | # define __percpu_seg_override  __seg_gs
        |                                 ^
  <built-in>:358:33: note: expanded from macro '__seg_gs'
    358 | #define __seg_gs __attribute__((address_space(256)))
        |                                 ^
  In file included from /virtual/main.c:15:
  In file included from include/linux/sched.h:13:
  arch/x86/include/asm/processor.h:545:10: warning: multiple identical address 
spaces specified for type [-Wduplicate-decl-specifier]
  arch/x86/include/asm/percpu.h:577:36: note: expanded from macro 
'this_cpu_read_const'
    577 | #define this_cpu_read_const(pcp)                        
__raw_cpu_read_const(pcp)
        |                                                         ^
  arch/x86/include/asm/percpu.h:163:35: note: expanded from macro 
'__raw_cpu_read_const'
    163 | #define __raw_cpu_read_const(pcp)       __raw_cpu_read(, , pcp)
        |                                         ^
  arch/x86/include/asm/percpu.h:155:9: note: expanded from macro 
'__raw_cpu_read'
    155 |         *(qual __my_cpu_type(pcp) *)__my_cpu_ptr(&(pcp));             
  \
        |                ^
  arch/x86/include/asm/percpu.h:94:40: note: expanded from macro '__my_cpu_type'
     94 | #define __my_cpu_type(var)      typeof(var) __percpu_seg_override
        |                                             ^
  arch/x86/include/asm/percpu.h:45:32: note: expanded from macro 
'__percpu_seg_override'
     45 | # define __percpu_seg_override  __seg_gs
        |                                 ^
  <built-in>:358:33: note: expanded from macro '__seg_gs'
    358 | #define __seg_gs __attribute__((address_space(256)))
        |                                 ^
  In file included from /virtual/main.c:16:
  In file included from include/linux/security.h:35:
  include/linux/bpf.h:349:10: error: invalid application of 'sizeof' to an 
incomplete type 'struct bpf_wq'
    349 |                 return sizeof(struct bpf_wq);
        |                        ^     ~~~~~~~~~~~~~~~
  include/linux/bpf.h:349:24: note: forward declaration of 'struct bpf_wq'
    349 |                 return sizeof(struct bpf_wq);
        |                                      ^
  include/linux/bpf.h:378:10: error: invalid application of '__alignof' to an 
incomplete type 'struct bpf_wq'
    378 |                 return __alignof__(struct bpf_wq);
        |                        ^          ~~~~~~~~~~~~~~~
  include/linux/bpf.h:378:29: note: forward declaration of 'struct bpf_wq'
    378 |                 return __alignof__(struct bpf_wq);
        |                                           ^
  4 warnings and 2 errors generated.
  Traceback (most recent call last):
    File "/usr/sbin/capable-bpfcc", line 250, in <module>
      b = BPF(text=bpf_text)
          ^^^^^^^^^^^^^^^^^^
    File "/usr/lib/python3/dist-packages/bcc/__init__.py", line 479, in __init__
      raise Exception("Failed to compile BPF module %s" % (src_file or 
"<text>"))
  Exception: Failed to compile BPF module <text>
  $ uname -a
  Linux ryan-lee-laptop-13-amd 6.11.0-25-generic #25~24.04.1-Ubuntu SMP 
PREEMPT_DYNAMIC Tue Apr 15 17:20:50 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

  ProblemType: Bug
  DistroRelease: Ubuntu 24.04
  Package: bpfcc-tools 0.29.1+ds-1ubuntu7
  ProcVersionSignature: Ubuntu 6.11.0-25.25~24.04.1-generic 6.11.11
  Uname: Linux 6.11.0-25-generic x86_64
  ApportVersion: 2.28.1-0ubuntu3.5
  Architecture: amd64
  CasperMD5CheckResult: pass
  CurrentDesktop: ubuntu:GNOME
  Date: Wed May  7 11:24:13 2025
  InstallationDate: Installed on 2024-07-25 (286 days ago)
  InstallationMedia: Ubuntu 24.04 LTS "Noble Numbat" - Release amd64 (20240424)
  PackageArchitecture: all
  ProcEnviron:
   LANG=en_US.UTF-8
   PATH=(custom, no user)
   SHELL=/bin/bash
   TERM=xterm-256color
   XDG_RUNTIME_DIR=<set>
  SourcePackage: bpfcc
  UpgradeStatus: No upgrade log present (probably fresh install)

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