-Wattribute-warning in fs/smb/client/cifsencrypt.c

[nickdesaulniers]

In file included from fs/smb/client/cifsencrypt.c:12:
In file included from ./include/linux/fs.h:6:
In file included from ./include/linux/wait_bit.h:8:
In file included from ./include/linux/wait.h:9:
In file included from ./include/linux/spinlock.h:56:
In file included from ./include/linux/preempt.h:79:
In file included from ./arch/x86/include/asm/preempt.h:9:
In file included from ./include/linux/thread_info.h:60:
In file included from ./arch/x86/include/asm/thread_info.h:53:
In file included from ./arch/x86/include/asm/cpufeature.h:5:
In file included from ./arch/x86/include/asm/processor.h:19:
In file included from ./arch/x86/include/asm/cpuid.h:62:
In file included from ./arch/x86/include/asm/paravirt.h:17:
In file included from ./include/linux/cpumask.h:12:
In file included from ./include/linux/bitmap.h:12:
In file included from ./include/linux/string.h:295:
./include/linux/fortify-string.h:489:4: error: call to '__write_overflow_field' declared with 'warning' attribute: detected write beyond size of field (1st parameter); maybe use struct_group()? [-Werror,-Wattribute-warning]
  489 |                         __write_overflow_field(p_size_field, size);
      |                         ^

from an x86_64 allmodconfig on mainline.

[nickdesaulniers]

dupe of #1966