Snippets for linux 7.2.0 from Fedora s390x

Sourced from https://kojipkgs.fedoraproject.org/packages/kernel/7.2.0/61.fc46/data/logs/s390x/build.log.

• /usr/include/features.h:451:4: warning: #warning _FORTIFY_SOURCE requires compiling with optimization (-O) [-Wcpp]
    451 | #  warning _FORTIFY_SOURCE requires compiling with optimization (-O)
        |    ^~~~~~~
  

• tmon.c:233:25: warning: ‘strncpy’ specified bound 20 equals destination size [-Wstringop-truncation]
    233 |                         strncpy(ctrl_cdev, optarg, CDEV_NAME_SIZE);
        |                         ^
  

• page_owner_sort.c:419:13: warning: assignment discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
    419 |         tmp = strstr(buf, "__vmalloc_node_range");
        |             ^
  

• src/in_kernel.c:307:9: warning: ‘__strncpy_chk’ specified bound depends on the length of the source argument [-Wstringop-truncation]
    307 |         strncpy(curr_reactor, start, strlen(start));
        |         ^
  

• src/utils.c:749:9: warning: ‘strncpy’ output may be truncated copying 1010 bytes from a string of length 1024 [-Wstringop-truncation]
    749 |         strncpy(mp, mount_point, sizeof_mp - 1);
        |         ^
  

• src/timerlat_aa.c:542:9: warning: ‘strncpy’ specified bound 24 equals destination size [-Wstringop-truncation]
    542 |         strncpy(taa_data->current_comm, comm, MAX_COMM);
        |         ^
  

• ./vmlinux.h:29609:3: warning: declaration does not declare anything [-Wmissing-declarations]
  

• ./vmlinux.h:31972:2: warning: declaration does not declare anything [-Wmissing-declarations]
  

• ./vmlinux.h:49264:3: warning: declaration does not declare anything [-Wmissing-declarations]
  

• ./vmlinux.h:70259:2: warning: declaration does not declare anything [-Wmissing-declarations]
  

• ./vmlinux.h:71773:2: warning: declaration does not declare anything [-Wmissing-declarations]
  

• ./vmlinux.h:103937:3: warning: declaration does not declare anything [-Wmissing-declarations]
  

• ./vmlinux.h:104037:2: warning: declaration does not declare anything [-Wmissing-declarations]
  

• ./vmlinux.h:117291:4: warning: declaration does not declare anything [-Wmissing-declarations]
  

• ./vmlinux.h:117740:2: warning: declaration does not declare anything [-Wmissing-declarations]
  

• /builddir/build/BUILD/kernel-7.2.0-build/kernel-7.2/linux-7.2.0-61.fc46.s390x/arch/s390/include/asm/ptrace.h:226:9: warning: default initialization of an object of type 'typeof (regs->psw)' (aka 'const psw_t') leaves the object uninitialized [-Wdefault-const-init-var-unsafe]
    226 |         return psw_bits(regs->psw).pstate;
        |                ^
  

• /builddir/build/BUILD/kernel-7.2.0-build/kernel-7.2/linux-7.2.0-61.fc46.s390x/include/linux/fs.h:2436:2: warning: declaration does not declare anything [-Wmissing-declarations]
   2436 |         struct __filename_head;
        |         ^~~~~~~~~~~~~~~~~~~~~~
  

• /builddir/build/BUILD/kernel-7.2.0-build/kernel-7.2/linux-7.2.0-61.fc46.s390x/include/linux/ns/ns_common_types.h:120:3: warning: declaration does not declare anything [-Wmissing-declarations]
    120 |                 struct ns_tree;
        |                 ^~~~~~~~~~~~~~
  

• /builddir/build/BUILD/kernel-7.2.0-build/kernel-7.2/linux-7.2.0-61.fc46.s390x/include/linux/compat.h:458:22: warning: array index 3 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]
    458 |         case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3];
        |                             ^        ~
  

• /builddir/build/BUILD/kernel-7.2.0-build/kernel-7.2/linux-7.2.0-61.fc46.s390x/include/linux/compat.h:458:10: warning: array index 7 is past the end of the array (that has type 'compat_sigset_word[2]' (aka 'unsigned int[2]')) [-Warray-bounds]
    458 |         case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3];
        |                 ^     ~
  

• /builddir/build/BUILD/kernel-7.2.0-build/kernel-7.2/linux-7.2.0-61.fc46.s390x/include/linux/compat.h:458:42: warning: array index 6 is past the end of the array (that has type 'compat_sigset_word[2]' (aka 'unsigned int[2]')) [-Warray-bounds]
    458 |         case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3];
        |                                                 ^     ~
  

• /builddir/build/BUILD/kernel-7.2.0-build/kernel-7.2/linux-7.2.0-61.fc46.s390x/include/linux/compat.h:458:53: warning: array index 3 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]
    458 |         case 4: v.sig[7] = (set->sig[3] >> 32); v.sig[6] = set->sig[3];
        |                                                            ^        ~
  

• /builddir/build/BUILD/kernel-7.2.0-build/kernel-7.2/linux-7.2.0-61.fc46.s390x/include/linux/compat.h:460:22: warning: array index 2 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]
    460 |         case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2];
        |                             ^        ~
  

• /builddir/build/BUILD/kernel-7.2.0-build/kernel-7.2/linux-7.2.0-61.fc46.s390x/include/linux/compat.h:460:10: warning: array index 5 is past the end of the array (that has type 'compat_sigset_word[2]' (aka 'unsigned int[2]')) [-Warray-bounds]
    460 |         case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2];
        |                 ^     ~
  

• /builddir/build/BUILD/kernel-7.2.0-build/kernel-7.2/linux-7.2.0-61.fc46.s390x/include/linux/compat.h:460:42: warning: array index 4 is past the end of the array (that has type 'compat_sigset_word[2]' (aka 'unsigned int[2]')) [-Warray-bounds]
    460 |         case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2];
        |                                                 ^     ~
  

• /builddir/build/BUILD/kernel-7.2.0-build/kernel-7.2/linux-7.2.0-61.fc46.s390x/include/linux/compat.h:460:53: warning: array index 2 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]
    460 |         case 3: v.sig[5] = (set->sig[2] >> 32); v.sig[4] = set->sig[2];
        |                                                            ^        ~
  

• /builddir/build/BUILD/kernel-7.2.0-build/kernel-7.2/linux-7.2.0-61.fc46.s390x/include/linux/compat.h:462:22: warning: array index 1 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]
    462 |         case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1];
        |                             ^        ~
  

• /builddir/build/BUILD/kernel-7.2.0-build/kernel-7.2/linux-7.2.0-61.fc46.s390x/include/linux/compat.h:462:10: warning: array index 3 is past the end of the array (that has type 'compat_sigset_word[2]' (aka 'unsigned int[2]')) [-Warray-bounds]
    462 |         case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1];
        |                 ^     ~
  

• /builddir/build/BUILD/kernel-7.2.0-build/kernel-7.2/linux-7.2.0-61.fc46.s390x/include/linux/compat.h:462:42: warning: array index 2 is past the end of the array (that has type 'compat_sigset_word[2]' (aka 'unsigned int[2]')) [-Warray-bounds]
    462 |         case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1];
        |                                                 ^     ~
  

• /builddir/build/BUILD/kernel-7.2.0-build/kernel-7.2/linux-7.2.0-61.fc46.s390x/include/linux/compat.h:462:53: warning: array index 1 is past the end of the array (that has type 'const unsigned long[1]') [-Warray-bounds]
    462 |         case 2: v.sig[3] = (set->sig[1] >> 32); v.sig[2] = set->sig[1];
        |                                                            ^        ~
  

• /builddir/build/BUILD/kernel-7.2.0-build/kernel-7.2/linux-7.2.0-61.fc46.s390x/include/net/sock.h:85:3: warning: declaration does not declare anything [-Wmissing-declarations]
     85 |                 struct slock_owned {
        |                 ^~~~~~~~~~~~~~~~~~
  

• /builddir/build/BUILD/kernel-7.2.0-build/kernel-7.2/linux-7.2.0-61.fc46.s390x/samples/bpf/libbpf/include/bpf/bpf_helpers.h:318:9: warning: 'bpf_stream_printk' macro redefined [-Wmacro-redefined]
    318 | #define bpf_stream_printk(stream_id, fmt, args...)                                      \
        |         ^
  

• /builddir/build/BUILD/kernel-7.2.0-build/kernel-7.2/linux-7.2.0-61.fc46.s390x/samples/bpf/libbpf/include/bpf/bpf_tracing.h:166:18: warning: unknown attribute 'preserve_access_index' ignored [-Wunknown-attributes]
    166 | } __attribu/builddir/build/BUILD/kernel-7.2.0-build/kernel-7.2/linux-7.2.0-61.fc46.s390x/include/net/sock.h:1706:38: error: no member named 'slock' in 'socket_lock_t'
   1706 |                lockdep_is_held(&sk->sk_lock.slock);
        |                                 ~~~~~~~~~~~ ^
  

• /builddir/build/BUILD/kernel-7.2.0-build/kernel-7.2/linux-7.2.0-61.fc46.s390x/samples/bpf/libbpf/include/bpf/bpf_tracing.h:166:18: warning: unknown attribute 'preserve_access_index' ignored [-Wunknown-attributes]
    166 | } __attribute__((preserve_access_index));
        |                  ^~~~~~~~~~~~~~~~~~~~~
  

• test_memcontrol.c:1758:12: warning: ‘fd’ may be used uninitialized [-Wmaybe-uninitialized]
   1758 |         if (fd >= 0)
        |            ^
  

• test_memcontrol.c:1713:12: warning: ‘fd’ may be used uninitialized [-Wmaybe-uninitialized]
   1713 |         if (fd >= 0)
        |            ^
  

• cow.c:645:25: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    645 |                         write(comm_pipes.child_ready[1], "0", 1);
        |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• cow.c:661:25: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    661 |                         write(comm_pipes.parent_ready[1], "0", 1);
        |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• cow.c:730:17: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    730 |                 write(comm_pipes.parent_ready[1], "0", 1);
        |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• cow.c:480:25: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    480 |                         write(comm_pipes.child_ready[1], "0", 1);
        |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• cow.c:568:17: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    568 |                 write(comm_pipes.parent_ready[1], "0", 1);
        |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• cow.c:331:17: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    331 |                 write(comm_pipes.child_ready[1], "0", 1);
        |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• cow.c:356:9: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    356 |         write(comm_pipes.parent_ready[1], "0", 1);
        |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• cow.c:170:9: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    170 |         write(comm_pipes->child_ready[1], "0", 1);
        |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• cow.c:220:25: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    220 |                         write(comm_pipes.parent_ready[1], "0", 1);
        |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• cow.c:229:25: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    229 |                         write(comm_pipes.parent_ready[1], "0", 1);
        |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• cow.c:237:9: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    237 |         write(comm_pipes.parent_ready[1], "0", 1);
        |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• cow.c:129:9: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    129 |         write(comm_pipes->child_ready[1], "0", 1);
        |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• cow.c:1380:25: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   1380 |                         write(comm_pipes.parent_ready[1], "0", 1);
        |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• cow.c:1391:25: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   1391 |                         write(comm_pipes.parent_ready[1], "0", 1);
        |                         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• cow.c:1402:9: warning: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
   1402 |         write(comm_pipes.parent_ready[1], "0", 1);
        |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• hmm-tests.c:266:9: warning: ignoring return value of ‘read’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    266 |         read(fd, &r, sizeof(r));
        |         ^~~~~~~~~~~~~~~~~~~~~~~
  

• hugetlb-vmemmap.c:47:9: warning: ignoring return value of ‘read’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
     47 |         read(fd, &pagemap, sizeof(pagemap));
        |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• hugetlb-vmemmap.c:64:9: warning: ignoring return value of ‘read’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
     64 |         read(fd, &pageflags, sizeof(pageflags));
        |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• hugetlb-vmemmap.c:77:17: warning: ignoring return value of ‘read’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
     77 |                 read(fd, &pageflags, sizeof(pageflags));
        |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• map_fixed_noreplace.c:22:9: warning: ignoring return value of ‘system’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
     22 |         system(cmd);
        |         ^~~~~~~~~~~
  

• memory-failure.c:257:17: warning: ignoring return value of ‘ftruncate’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    257 |                 ftruncate(fd, size);
        |                 ^~~~~~~~~~~~~~~~~~~
  

• mremap_dontunmap.c:27:9: warning: ignoring return value of ‘system’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
     27 |         system(cmd);
        |         ^~~~~~~~~~~
  

• rmap.c:336:9: warning: ignoring return value of ‘ftruncate’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    336 |         ftruncate(shm_fd, data->mapsize);
        |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• rmap.c:361:9: warning: ignoring return value of ‘ftruncate’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    361 |         ftruncate(fd, data->mapsize);
        |         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• soft-dirty.c:155:17: warning: ignoring return value of ‘ftruncate’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
    155 |                 ftruncate(test_fd, pagesize);
        |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• ipmr.c:119:13: warning: variable ‘unused’ set but not used [-Wunused-but-set-variable=]
    119 |         int unused = 0;
        |             ^~~~~~
  

• mptcp_connect.c:1267:22: warning: initialization discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
   1267 |         char *next = strchr(type, ',');
        |                      ^~~~~~
  

• mptcp_connect.c:1295:22: warning: initialization discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
   1295 |         char *next = strchr(name, ',');
        |                      ^~~~~~
  

• conntrack_dump_flush.c:105:26: warning: unused variable ‘rplnlh’ [-Wunused-variable]
    105 |         struct nlmsghdr *rplnlh;
        |                          ^~~~~~
  

• conntrack_dump_flush.c:224:24: warning: unused variable ‘nest’ [-Wunused-variable]
    224 |         struct nlattr *nest;
        |                        ^~~~
  

• conntrack_dump_flush.c:222:32: warning: unused variable ‘rplnlh’ [-Wunused-variable]
    222 |         struct nlmsghdr *nlh, *rplnlh;
        |                                ^~~~~~
  

• conntrack_dump_flush.c:271:24: warning: unused variable ‘nest’ [-Wunused-variable]
    271 |         struct nlattr *nest;
        |                        ^~~~
  

• conntrack_dump_flush.c:269:32: warning: unused variable ‘rplnlh’ [-Wunused-variable]
    269 |         struct nlmsghdr *nlh, *rplnlh;
        |                                ^~~~~~
  

• conntrack_reverse_clash.c:71:19: warning: unused variable ‘plen’ [-Wunused-variable]
     71 |         socklen_t plen;
        |                   ^~~~
  

• nf_queue.c:337:33: warning: statement with no effect [-Wunused-value]
    337 |                                 for (ooo_count; ooo_count >= 0; ooo_count--) {
        |                                 ^~~
  

• lib/proc.c:61:16: warning: assignment discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
     61 |         column = strchr(line, ':');
        |                ^
  

• memfd_test.c:721:13: warning: ‘<unknown>’ may be used uninitialized [-Wmaybe-uninitialized]
    721 |         l = pwrite(fd, buf, mfd_def_size * 8, 0);
        |             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• iou-zcrx.c:133:16: warning: unused variable ‘size’ [-Wunused-variable]
    133 |         size_t size;
        |                ^~~~
  

• iou-zcrx.c:272:30: warning: unused variable ‘sqe’ [-Wunused-variable]
    272 |         struct io_uring_sqe *sqe;
        |                              ^~~
  

• iou-zcrx.c:318:16: warning: unused variable ‘ret’ [-Wunused-variable]
    318 |         int i, ret;
        |                ^~~
  

• iou-zcrx.c:318:13: warning: unused variable ‘i’ [-Wunused-variable]
    318 |         int i, ret;
        |             ^
  

• iou-zcrx.c:491:21: warning: unused variable ‘cfg_test’ [-Wunused-variable]
    491 |         const char *cfg_test = argv[argc - 1];
        |                     ^~~~~~~~
  

• file_stressor.c:112:23: warning: unused variable ‘pid_self’ [-Wunused-variable]
    112 |                 pid_t pid_self;
        |                       ^~~~~~~~
  

• fs_test.c:436:14: warning: ‘dirfd’ may be used uninitialized [-Wmaybe-uninitialized]
    436 |         fd = openat(dirfd, path, flags | O_CLOEXEC);
        |              ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  

• tsync_test.c:63:1: warning: no return statement in function returning non-void [-Wreturn-type]
     63 | }
        | ^
  

• uevent_filtering.c:217:16: warning: ‘ret’ may be used uninitialized [-Wmaybe-uninitialized]
    217 |         return ret;
        |                ^~~
  

• gro.c:1249:13: warning: variable ‘total_data’ set but not used [-Wunused-but-set-variable=]
   1249 |         int total_data = 0;
        |             ^~~~~~~~~~