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Recently the kernel test robot reported:
> In file included from include/linux/kernel.h:29,
>                     from fs/binfmt_flat.c:21:
>    fs/binfmt_flat.c: In function 'flat_core_dump':
> >> fs/binfmt_flat.c:121:50: error: invalid use of undefined type 'struct coredump_params'
>      121 |                 current->comm, current->pid, cprm->siginfo->si_signo);
>          |                                                  ^~
>    include/linux/printk.h:418:33: note: in definition of macro 'printk_index_wrap'
>      418 |                 _p_func(_fmt, ##__VA_ARGS__);                           \
>          |                                 ^~~~~~~~~~~
>    include/linux/printk.h:499:9: note: in expansion of macro 'printk'
>      499 |         printk(KERN_WARNING pr_fmt(fmt), ##__VA_ARGS__)
>          |         ^~~~~~
>    fs/binfmt_flat.c:120:9: note: in expansion of macro 'pr_warn'
>      120 |         pr_warn("Process %s:%d received s...