Package: src:linux Version: 5.18.2-1 Severity: minor Tags: sid bookworm User: debian-...@lists.debian.org Usertags: ftbfs-lto
This package currently fails to build (at least on the amd64 architecture) with link time optimizations enabled. For a background for LTO please see https://wiki.debian.org/ToolChain/LTO The goal is to enable this optimization by default in an upcoming Debian release in dpkg-buildflags for 64bit architectures. The goal is to get this package to build with link time optimizations, or to explicitly disable link time optimizations for this package build. To reproduce the build failure, enable the lto optimization in testing/unstable by adding "optimize=+lto" to DEB_BUILD_MAINT_OPTIONS in the debian/rules file, or if this macro is unset, just set it: export DEB_BUILD_MAINT_OPTIONS = optimize=+lto Please try to fix the build with lto enabled, fixing the packaging or forwarding the issue upstream. If the issue cannot be fixed, explicitly disallow building the package with lto by adding to your rules file: export DEB_BUILD_MAINT_OPTIONS = optimize=-lto or adding that string to your existing setting of DEB_BUILD_MAINT_OPTIONS. The full build log can be found at: http://qa-logs.debian.net/2022/06/09/dpkglto/linux_5.18.2-1_unstable_dpkglto.log The last lines of the build log are at the end of this report. [...] util/parse-events.c:1519:30: warning: ‘MEM <unsigned char> [(struct perf_pmu_info *)&info + 32B]’ may be used uninitialized in this function [-Wmaybe-uninitialized] util/parse-events.c:1638:22: warning: ‘info.scale’ may be used uninitialized in this function [-Wmaybe-uninitialized] 1638 | evsel->scale = info.scale; | ^ util/parse-events.c:1519:30: note: ‘info.scale’ was declared here 1519 | struct perf_pmu_info info; | ^ util/parse-events.c:1637:23: warning: ‘info.unit’ may be used uninitialized in this function [-Wmaybe-uninitialized] 1637 | evsel->unit = strdup(info.unit); | ^ util/parse-events.c:1519:30: note: ‘info.unit’ was declared here 1519 | struct perf_pmu_info info; | ^ util/parse-events.c: In function ‘parse_events_load_bpf_obj’: ../lib/bpf/libbpf.c:11973:18: warning: ‘n’ may be used uninitialized in this function [-Wmaybe-uninitialized] 11973 | int err, n, i, tmp_cpus; | ^ util/parse-events.c: In function ‘parse_events_load_bpf’: util/parse-events.c:821:37: warning: ‘error_pos’ may be used uninitialized in this function [-Wmaybe-uninitialized] 821 | idx = term->err_term + error_pos; | ^ util/parse-events.c:794:13: note: ‘error_pos’ was declared here 794 | int error_pos; | ^ util/trace-event-parse.c: In function ‘raw_field_value.constprop’: util/trace-event-parse.c:84:28: warning: ‘val’ may be used uninitialized in this function [-Wmaybe-uninitialized] 84 | unsigned long long val; | ^ util/bpf-event.c: In function ‘perf_env__fetch_btf.isra’: util/bpf-event.c:156:16: warning: ‘data_size’ may be used uninitialized in this function [-Wmaybe-uninitialized] 156 | node = malloc(data_size + sizeof(struct btf_node)); | ^ util/bpf-event.c:151:13: note: ‘data_size’ was declared here 151 | u32 data_size; | ^ util/stat.c: In function ‘perf_event__fprintf_stat_config.isra’: util/stat.c:538:52: warning: ‘MEM <unsigned char> [(struct perf_stat_config *)&sc + 4B]’ may be used uninitialized in this function [-Wmaybe-uninitialized] 538 | ret += fprintf(fp, "... scale %d\n", sc.scale); | ^ util/stat.c:531:33: note: ‘MEM <unsigned char> [(struct perf_stat_config *)&sc + 4B]’ was declared here 531 | struct perf_stat_config sc; | ^ util/scripting-engines/trace-event-python.c: In function ‘python_process_event’: util/scripting-engines/trace-event-python.c:884:13: warning: ‘val’ may be used uninitialized [-Wmaybe-uninitialized] 884 | pid = raw_field_value(event, "common_pid", data); | ^ util/trace-event-parse.c:84:28: note: ‘val’ was declared here 84 | unsigned long long val; | ^ /usr/bin/ld: /tmp/ccct67DD.ltrans17.ltrans.o: in function `test_dwarf_unwind__thread': /<<PKGBUILDDIR>>/tools/perf/arch/x86/tests/dwarf-unwind.c:72: undefined reference to `perf_regs_load' /usr/bin/ld: /tmp/ccct67DD.ltrans10.ltrans.o:(.data.rel.ro+0x28): undefined reference to `memset_orig' /usr/bin/ld: /tmp/ccct67DD.ltrans10.ltrans.o:(.data.rel.ro+0x40): undefined reference to `__memset' /usr/bin/ld: /tmp/ccct67DD.ltrans10.ltrans.o:(.data.rel.ro+0x58): undefined reference to `memset_erms' /usr/bin/ld: /tmp/ccct67DD.ltrans10.ltrans.o:(.data.rel+0x28): undefined reference to `memcpy_orig' /usr/bin/ld: /tmp/ccct67DD.ltrans10.ltrans.o:(.data.rel+0x40): undefined reference to `__memcpy' /usr/bin/ld: /tmp/ccct67DD.ltrans10.ltrans.o:(.data.rel+0x58): undefined reference to `memcpy_erms' collect2: error: ld returned 1 exit status make[5]: *** [Makefile.perf:677: /<<PKGBUILDDIR>>/debian/build/build-tools/tools/perf/perf] Error 1 make[5]: Leaving directory '/<<PKGBUILDDIR>>/tools/perf' make[4]: *** [Makefile.perf:240: sub-make] Error 2 make[4]: Leaving directory '/<<PKGBUILDDIR>>/tools/perf' make[3]: *** [/<<PKGBUILDDIR>>/debian/rules.d/tools/perf/Makefile:49: all] Error 2 make[3]: Leaving directory '/<<PKGBUILDDIR>>/debian/build/build-tools/tools/perf' make[2]: *** [debian/rules.real:727: build-perf] Error 2 make[2]: Leaving directory '/<<PKGBUILDDIR>>' make[1]: *** [debian/rules.gen:443: build-arch_amd64_real] Error 2 make[1]: Leaving directory '/<<PKGBUILDDIR>>' make: *** [debian/rules:39: build-arch] Error 2 dpkg-buildpackage: error: debian/rules binary subprocess returned exit status 2
