[LU-18740] lustre/mgs/mgs_llog.c doesn't build with gccc 11.5.0

• Type: Bug
• Resolution: Fixed
• Priority: Trivial
• Fix Version/s: Lustre 2.17.0
• Severity: 3
• Assignee: Alex Zhuravlev
• Reporter: Alex Zhuravlev

Description

# gcc -v
gcc version 11.5.0 20240719 (Red Hat 11.5.0-2) (GCC) 
# make
...
In function 'contain_valid_fsname',
    inlined from 'contain_valid_fsname' at /home/alexey/head2/lustre/mgs/mgs_llog.c:4989:13,
    inlined from 'mgs_lcfg_fork_handler' at /home/alexey/head2/lustre/mgs/mgs_llog.c:5027:6:
/home/alexey/head2/lustre/mgs/mgs_llog.c:4995:13: error: '__builtin_memcmp_eq' specified bound [18446744071562067968, 0] exceeds maximum object size 9223372036854775807 [-Werror=stringop-overread]
 4995 |         if (memcmp(buf, fsname, namelen) != 0)
      |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~