[LU-17193] RHEL 9.2 building with gcc12 hits a few issues

Fri, 27 Oct 2023 21:45:15 +0000

gcc12 breaks a couple of compile tests:

/home/shaun/lustre-release/_lpb/fileattr_set_pc/fileattr_set_pc.c: In function ‘main’:
/home/shaun/lustre-release/_lpb/fileattr_set_pc/fileattr_set_pc.c:74:32: error: array subscript 0 is outside array bounds of ‘struct inode_operations[0]’ [-Werror=array-bounds]
   74 |  ((struct inode_operations *)1)->fileattr_get(NULL, NULL);
      |                                ^~

A couple of compile tests have an invalid '3rd' argument (cleanup).

A few QCTL_COPY() macros hit:

In function ‘strnlen’,
    inlined from ‘mdc_iocontrol’ at /home/shaun/lustre-release/lustre/mdc/mdc_request.c:2286:4:
include/linux/fortify-string.h:23:34: error: array subscript 112 is outside array bounds of ‘void[112]’ [-Werror=array-bounds]
   23 |             __builtin_constant_p(*__p)) {                       \
      |                                  ^~~~
include/linux/fortify-string.h:141:24: note: in expansion of macro ‘__compiletime_strlen’
  141 |         size_t p_len = __compiletime_strlen(p);
      |                        ^~~~~~~~~~~~~~~~~~~~
In file included from include/linux/fs.h:44,
                 from include/linux/huge_mm.h:8,
                 from include/linux/mm.h:707,
                 from include/linux/pagemap.h:8,
                 from /home/shaun/lustre-release/lustre/mdc/mdc_request.c:37:
In function ‘kmalloc’,
    inlined from ‘mdc_iocontrol’ at /home/shaun/lustre-release/lustre/mdc/mdc_request.c:2279:3:
include/linux/slab.h:611:24: note: at offset 112 into object of size 112 allocated by ‘kmem_cache_alloc_trace’
  611 |                 return kmem_cache_alloc_trace(
      |                        ^~~~~~~~~~~~~~~~~~~~~~~
  612 |                                 kmalloc_caches[kmalloc_type(flags)][index],
      |                                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  613 |                                 flags, size);
      |                                 ~~~~~~~~~~~~
cc1: all warnings being treated as errors

Whamcloud Community JIRA

[LU-17193] RHEL 9.2 building with gcc12 hits a few issues