[Bug ipa/101941] [12 Regression] Linux kernel build failure due to retaining fnsplit fragment with __attribute__((__error__))

["marxin at gcc dot gnu.org" <gcc-bugzilla@gcc.gnu.org>]

https://gcc.gnu.org/bugzilla/show_bug.cgi?id=101941

--- Comment #26 from Martin Liška <marxin at gcc dot gnu.org> ---
I've just rebuilt kernel-default package from openSUSE:Factory with the
following config:
https://gist.githubusercontent.com/marxin/d5373a0dd6ab35233a47a25337e73dc5/raw/d2c810d2d32104619b57b6f1d118d052302c519f/.config

and there's one more compilation error for fs/lockd/svclock.c:

gcc fs_lockd_svclock.i -c -O2
In file included from ./include/linux/string.h:253,
                 from ./include/linux/bitmap.h:10,
                 from ./include/linux/cpumask.h:12,
                 from ./arch/x86/include/asm/cpumask.h:5,
                 from ./arch/x86/include/asm/msr.h:11,
                 from ./arch/x86/include/asm/processor.h:22,
                 from ./arch/x86/include/asm/cpufeature.h:5,
                 from ./arch/x86/include/asm/thread_info.h:53,
                 from ./include/linux/thread_info.h:60,
                 from ./arch/x86/include/asm/preempt.h:7,
                 from ./include/linux/preempt.h:78,
                 from ./include/linux/spinlock.h:55,
                 from ./include/linux/mmzone.h:8,
                 from ./include/linux/gfp.h:6,
                 from ./include/linux/slab.h:15,
                 from fs/lockd/svclock.c:25:
In function ‘strcpy’,
    inlined from ‘nlmdbg_cookie2a’ at fs/lockd/svclock.c:74:4,
    inlined from ‘nlmsvc_lookup_block’ at fs/lockd/svclock.c:157:721:
./include/linux/fortify-string.h:319:17: error: call to ‘__write_overflow’
declared with attribute error: detected write beyond size of object (1st
parameter)
  319 |                 __write_overflow();
      |                 ^~~~~~~~~~~~~~~~~~
In function ‘strcpy’,
    inlined from ‘nlmdbg_cookie2a’ at fs/lockd/svclock.c:74:4,
    inlined from ‘nlmsvc_find_block’ at fs/lockd/svclock.c:196:672,
    inlined from ‘nlmsvc_grant_reply’ at fs/lockd/svclock.c:963:16:
./include/linux/fortify-string.h:319:17: error: call to ‘__write_overflow’
declared with attribute error: detected write beyond size of object (1st
parameter)
  319 |                 __write_overflow();
      |                 ^~~~~~~~~~~~~~~~~~

that started with r12-6030-g422f9eb7011b76c1.