[LU-19151] Fix fortify build issue Ubuntu 25.04 / v6.11.29

• Type: Bug
• Resolution: Fixed
• Priority: Medium
• Fix Version/s: Lustre 2.17.0
• Severity: 3
• Assignee: Shaun Tancheff
• Reporter: Shaun Tancheff

Description

Ubuntu 6.11, gcc-14.2

/home/shaun/lustre-release/lustre/llite/file.c: In function ‘ll_intent_file_open’:
./include/linux/fortify-string.h:114:33: error: ‘__builtin_memcpy’ accessing 18446744073709551614 bytes at offsets 0 and 0 overlaps 9223372036854775805 bytes at offset -9223372036854775807 [-Werror=restrict]
  114 | #define __underlying_memcpy     __builtin_memcpy
      |                                 ^
./include/linux/fortify-string.h:633:9: note: in expansion of macro ‘__underlying_memcpy’
  633 |         __underlying_##op(p, q, __fortify_size);                        \
      |         ^~~~~~~~~~~~~
./include/linux/fortify-string.h:678:26: note: in expansion of macro ‘__fortify_memcpy_chk’
  678 | #define memcpy(p, q, s)  __fortify_memcpy_chk(p, q, s,                  \
      |                          ^~~~~~~~~~~~~~~~~~~~
/home/shaun/lustre-release/lustre/llite/file.c:738:17: note: in expansion of macro ‘memcpy’
  738 |                 memcpy(name, de->d_name.name, len);
      |                 ^~~~~~
cc1: all warnings being treated as errors