[Bug Report] A compilation failure occurs when landlock and RANDSTRUCT are combined with GCC 14.2.0.

[Bug Report] A compilation failure occurs when landlock and RANDSTRUCT are combined with GCC 14.2.0.

[WangYuli]

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[ Compilation failure log: ]

*** WARNING *** there are active plugins, do not report this as a bug 
unless you can reproduce it without enabling an
y plugins.
Event                            | Plugins
PLUGIN_FINISH_TYPE               | randomize_layout_plugin
PLUGIN_FINISH_DECL               | randomize_layout_plugin
PLUGIN_ATTRIBUTES                | latent_entropy_plugin 
randomize_layout_plugin
PLUGIN_START_UNIT                | latent_entropy_plugin stackleak_plugin
PLUGIN_ALL_IPA_PASSES_START      | randomize_layout_plugin
security/landlock/fs.c:In function ‘hook_file_ioctl_common’:
security/landlock/fs.c:1745:61:internal compiler error: in 
count_type_elements, at expr.cc:7075
1745 |                         .u.op = &(struct lsm_ioctlop_audit) {
      |                                                             ^
0x7f27fa6bdca7 __libc_start_call_main
        ../sysdeps/nptl/libc_start_call_main.h:58
0x7f27fa6bdd64 __libc_start_main_impl
        ../csu/libc-start.c:360
Please submit a full bug report, with preprocessed source (by using 
-freport-bug).
Please include the complete backtrace with any bug report.
See <file:///usr/share/doc/gcc-14/README.Bugs> for instructions.
make[4]: *** [scripts/Makefile.build:203: security/landlock/fs.o] Error 1
make[3]: *** [scripts/Makefile.build:461: security/landlock] Error 2
make[2]: *** [scripts/Makefile.build:461: security] Error 2



[ Reproducing steps: ]

os-release: Debian GNU/Linux trixie/sid

Compiler: gcc version 14.2.0 (Debian 14.2.0-19)

Target: x86_64-linux-gnu

Step: make allmodconfig && make -j$(nproc)



[ Full config ]

Will be repiled to this mail.



Thanks,

-- 

WangYuli

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Re: [Bug Report] A compilation failure occurs when landlock and RANDSTRUCT are combined with GCC 14.2.0.

[Günther Noack]

Hello!

On Thu, Apr 10, 2025 at 04:11:15PM +0800, WangYuli wrote:
> [ Compilation failure log: ]
> 
> *** WARNING *** there are active plugins, do not report this as a bug unless
> you can reproduce it without enabling an
> y plugins.
> Event                            | Plugins
> PLUGIN_FINISH_TYPE               | randomize_layout_plugin
> PLUGIN_FINISH_DECL               | randomize_layout_plugin
> PLUGIN_ATTRIBUTES                | latent_entropy_plugin
> randomize_layout_plugin
> PLUGIN_START_UNIT                | latent_entropy_plugin stackleak_plugin
> PLUGIN_ALL_IPA_PASSES_START      | randomize_layout_plugin
> security/landlock/fs.c:In function ‘hook_file_ioctl_common’:
> security/landlock/fs.c:1745:61:internal compiler error: in
> count_type_elements, at expr.cc:7075
> 1745 |                         .u.op = &(struct lsm_ioctlop_audit) {
>      |                                                             ^
> 0x7f27fa6bdca7 __libc_start_call_main
>        ../sysdeps/nptl/libc_start_call_main.h:58
> 0x7f27fa6bdd64 __libc_start_main_impl
>        ../csu/libc-start.c:360
> Please submit a full bug report, with preprocessed source (by using
> -freport-bug).
> Please include the complete backtrace with any bug report.
> See <file:///usr/share/doc/gcc-14/README.Bugs> for instructions.
> make[4]: *** [scripts/Makefile.build:203: security/landlock/fs.o] Error 1
> make[3]: *** [scripts/Makefile.build:461: security/landlock] Error 2
> make[2]: *** [scripts/Makefile.build:461: security] Error 2

Thank you for the report!

This is in my understanding a duplicate of the discussion in
https://lore.kernel.org/all/20250407-kbuild-disable-gcc-plugins-v1-1-5d46ae583f5e@kernel.org/

–Günther

Re: [Bug Report] A compilation failure occurs when landlock and RANDSTRUCT are combined with GCC 14.2.0.

[Mickaël Salaün]

On Thu, Apr 10, 2025 at 05:33:21PM +0200, Günther Noack wrote:
> Hello!
> 
> On Thu, Apr 10, 2025 at 04:11:15PM +0800, WangYuli wrote:
> > [ Compilation failure log: ]
> > 
> > *** WARNING *** there are active plugins, do not report this as a bug unless
> > you can reproduce it without enabling an
> > y plugins.
> > Event                            | Plugins
> > PLUGIN_FINISH_TYPE               | randomize_layout_plugin
> > PLUGIN_FINISH_DECL               | randomize_layout_plugin
> > PLUGIN_ATTRIBUTES                | latent_entropy_plugin
> > randomize_layout_plugin
> > PLUGIN_START_UNIT                | latent_entropy_plugin stackleak_plugin
> > PLUGIN_ALL_IPA_PASSES_START      | randomize_layout_plugin
> > security/landlock/fs.c:In function ‘hook_file_ioctl_common’:
> > security/landlock/fs.c:1745:61:internal compiler error: in
> > count_type_elements, at expr.cc:7075
> > 1745 |                         .u.op = &(struct lsm_ioctlop_audit) {
> >      |                                                             ^
> > 0x7f27fa6bdca7 __libc_start_call_main
> >        ../sysdeps/nptl/libc_start_call_main.h:58
> > 0x7f27fa6bdd64 __libc_start_main_impl
> >        ../csu/libc-start.c:360
> > Please submit a full bug report, with preprocessed source (by using
> > -freport-bug).
> > Please include the complete backtrace with any bug report.
> > See <file:///usr/share/doc/gcc-14/README.Bugs> for instructions.
> > make[4]: *** [scripts/Makefile.build:203: security/landlock/fs.o] Error 1
> > make[3]: *** [scripts/Makefile.build:461: security/landlock] Error 2
> > make[2]: *** [scripts/Makefile.build:461: security] Error 2
> 
> Thank you for the report!
> 
> This is in my understanding a duplicate of the discussion in
> https://lore.kernel.org/all/20250407-kbuild-disable-gcc-plugins-v1-1-5d46ae583f5e@kernel.org/

Yes, a new patch has been submitted:
https://lore.kernel.org/all/20250409151154.work.872-kees@kernel.org/

Re: [Bug Report] A compilation failure occurs when landlock and RANDSTRUCT are combined with GCC 14.2.0.

[WangYuli]

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Hi Günther and Mickaël Salaün,

On 2025/4/11 01:05, Mickaël Salaün wrote:
>> This is in my understanding a duplicate of the discussion in
>> https://lore.kernel.org/all/20250407-kbuild-disable-gcc-plugins-v1-1-5d46ae583f5e@kernel.org/
> Yes, a new patch has been submitted:
> https://lore.kernel.org/all/20250409151154.work.872-kees@kernel.org/

Thank you both for the reminder!

But I'm still a bit lost.

With GCC 14, I can reproduce this problem by merely enabling landlock 
and RANDSTRUCT on top of the base x86_64_defconfig.

It doesn't appear that making GCC_PLUGINS depend on !COMPILE_TEST or 
restricting RANDSTRUCT to only be enabled when CC_HAS_RANDSTRUCT is set 
actually addresses the root cause.

I'm quite curious to know what the actual direct cause of this internal 
GCC error is.

Thanks,
-- 
WangYuli

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