// Copyright 2017 syzkaller project authors. All rights reserved. // Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file. package build import ( "fmt" "os/exec" "strings" "testing" ) func TestCompilerIdentity(t *testing.T) { t.Parallel() for _, compiler := range []string{"gcc", "clang", "bazel"} { compiler := compiler t.Run(compiler, func(t *testing.T) { t.Parallel() if _, err := exec.LookPath(compiler); err != nil { t.Skipf("compiler '%v' is not found: %v", compiler, err) } id, err := CompilerIdentity(compiler) if err != nil { t.Fatalf("failed: %v", err) } if id == "" { t.Fatalf("identity is empty") } if strings.Contains(id, "\n") { t.Fatalf("identity contains a new line") } // We don't know what's the right answer, // so just print it for manual inspection. t.Logf("id: '%v'", id) }) } } func TestExtractRootCause(t *testing.T) { for i, test := range rootCauseTests { test := test t.Run(fmt.Sprint(i), func(t *testing.T) { reason, file := extractCauseInner([]byte(test.e), test.src) if test.reason != string(reason) { t.Errorf("expected:\n%s\ngot:\n%s", test.reason, reason) } if test.file != file { t.Errorf("expected file: %q, got: %q", test.file, file) } }) } } type RootCauseTest struct { e string reason string src string file string } // nolint: lll var rootCauseTests = []RootCauseTest{ {` LINK /home/dvyukov/src/linux2/tools/objtool/objtool MKELF scripts/mod/elfconfig.h HOSTCC scripts/mod/modpost.o HOSTCC scripts/mod/sumversion.o HOSTCC scripts/mod/file2alias.o HOSTLD scripts/mod/modpost CC kernel/bounds.s CALL scripts/atomic/check-atomics.sh CC arch/x86/kernel/asm-offsets.s UPD include/generated/asm-offsets.h CALL scripts/checksyscalls.sh `, "", "", "", }, {` cc -g -Werror db_break.c sys/dev/kcov.c:93:6: error: use of undeclared identifier 'kcov_cold123'; did you mean 'kcov_cold'? if (kcov_cold123) ^~~~~~~~~~~~ kcov_cold sys/dev/kcov.c:65:5: note: 'kcov_cold' declared here int kcov_cold = 1; ^ 1 error generated. `, "sys/dev/kcov.c:93:6: error: use of undeclared identifier 'kcov_cold123'; did you mean 'kcov_cold'?", "", "sys/dev/kcov.c", }, {` CC /tools/objtool/parse-options.o In file included from ./scripts/gcc-plugins/gcc-common.h:119:0, from :1: /gcc-5.5.0/bin/../lib/gcc/x86_64-unknown-linux-gnu/5.5.0/plugin/include/builtins.h:23:17: fatal error: mpc.h: No such file or directory compilation terminated. Cannot use CONFIG_GCC_PLUGINS: your gcc installation does not support plugins, perhaps the necessary headers are missing? scripts/Makefile.gcc-plugins:51: recipe for target 'gcc-plugins-check' failed make: *** [gcc-plugins-check] Error 1 make: *** Waiting for unfinished jobs.... UPD include/config/kernel.release `, "/gcc-5.5.0/bin/../lib/gcc/x86_64-unknown-linux-gnu/5.5.0/plugin/include/builtins.h:23:17: fatal error: mpc.h: No such file or directory", "", "", }, {` Starting local Bazel server and connecting to it... Loading: Loading: 0 packages loaded Analyzing: target //runsc:runsc (1 packages loaded) Analyzing: target //runsc:runsc (5 packages loaded) Analyzing: target //runsc:runsc (15 packages loaded) Analyzing: target //runsc:runsc (92 packages loaded) Analyzing: target //runsc:runsc (99 packages loaded) Analyzing: target //runsc:runsc (115 packages loaded) ERROR: /kernel/vdso/BUILD:13:1: no such target '@bazel_tools//tools/cpp:cc_flags': target 'cc_flags' not declared in package 'tools/cpp' defined by /syzkaller/home/.cache/bazel/_bazel_root/e1c9d86bae2b34f90e83d224bc900958/external/bazel_tools/tools/cpp/BUILD and referenced by '//vdso:vdso' ERROR: Analysis of target '//runsc:runsc' failed; build aborted: Analysis failed INFO: Elapsed time: 14.914s INFO: 0 processes. FAILED: Build did NOT complete successfully (189 packages loaded) `, `ERROR: /kernel/vdso/BUILD:13:1: no such target '@bazel_tools//tools/cpp:cc_flags': target 'cc_flags' not declared in package 'tools/cpp' defined by /syzkaller/home/.cache/bazel/_bazel_root/e1c9d86bae2b34f90e83d224bc900958/external/bazel_tools/tools/cpp/BUILD and referenced by '//vdso:vdso' ERROR: Analysis of target '//runsc:runsc' failed; build aborted: Analysis failed FAILED: Build did NOT complete successfully (189 packages loaded)`, "", "", }, {` ld -T ld.script -X --warn-common -nopie -o bsd ${SYSTEM_HEAD} vers.o ${OBJS} ld: error: undefined symbol: __stack_smash_handler >>> referenced by bktr_card.c:0 (/kernel/sys/dev/pci/bktr/bktr_card.c:0) >>> bktr_card.o:(probeCard) ld: error: undefined symbol: __stack_smash_handler >>> referenced by vnd.c:0 (/kernel/sys/dev/vnd.c:0) >>> vnd.o:(vndencrypt) ld: error: undefined symbol: __stack_smash_handler >>> referenced by ihidev.c:0 (/kernel/sys/dev/i2c/ihidev.c:0) >>> ihidev.o:(ihidev_attach) ld: error: too many errors emitted, stopping now (use -error-limit=0 to see all errors) *** Error 1 in /kernel/sys/arch/amd64/compile/SYZKALLER (Makefile:991 'bsd': @echo ld -T ld.script -X --warn-commo...) `, `ld: error: undefined symbol: __stack_smash_handler ld: error: too many errors emitted, stopping now (use -error-limit=0 to see all errors)`, "", "", }, {` make: execvp: /gcc-5.5.0/bin/gcc: Permission denied scripts/kconfig/conf --silentoldconfig Kconfig arch/x86/Makefile:123: stack-protector enabled but compiler support broken arch/x86/Makefile:138: CONFIG_X86_X32 enabled but no binutils support Makefile:652: Cannot use CONFIG_CC_STACKPROTECTOR_REGULAR: -fstack-protector not supported by compiler make: execvp: /gcc-5.5.0/bin/gcc: Permission denied SYSTBL arch/x86/entry/syscalls/../../include/generated/asm/syscalls_32.h SYSHDR arch/x86/entry/syscalls/../../include/generated/uapi/asm/unistd_x32.h scripts/xen-hypercalls.sh: line 7: /gcc-5.5.0/bin/gcc: Permission denied HOSTCC scripts/mod/mk_elfconfig /bin/sh: 1: /gcc-5.5.0/bin/gcc: Permission denied scripts/Makefile.build:258: recipe for target 'scripts/mod/empty.o' failed make[2]: *** [scripts/mod/empty.o] Error 126 make[2]: *** Waiting for unfinished jobs.... CC scripts/mod/devicetable-offsets.s /bin/sh: 1: /gcc-5.5.0/bin/gcc: Permission denied scripts/Makefile.build:153: recipe for target 'scripts/mod/devicetable-offsets.s' failed make[2]: *** [scripts/mod/devicetable-offsets.s] Error 126 HOSTCC scripts/selinux/mdp/mdp HOSTCC scripts/selinux/genheaders/genheaders scripts/Makefile.build:403: recipe for target 'scripts/mod' failed make[1]: *** [scripts/mod] Error 2 make[1]: *** Waiting for unfinished jobs.... UPD include/config/kernel.release Makefile:545: recipe for target 'scripts' failed make: *** [scripts] Error 2 make: *** Waiting for unfinished jobs.... HOSTLD arch/x86/tools/relocs `, `make: execvp: /gcc-5.5.0/bin/gcc: Permission denied scripts/xen-hypercalls.sh: line 7: /gcc-5.5.0/bin/gcc: Permission denied /bin/sh: 1: /gcc-5.5.0/bin/gcc: Permission denied`, "", "", }, {` ./arch/x86/include/asm/nospec-branch.h:360:1: warning: data definition has no type or storage class 360 | DECLARE_STATIC_KEY_FALSE(mds_user_clear); | ^~~~~~~~~~~~~~~~~~~~~~~~ ./arch/x86/include/asm/nospec-branch.h:360:1: error: type defaults to ‘int’ in declaration of ‘DECLARE_STATIC_KEY_FALSE’ [-Werror=implicit-int] ./arch/x86/include/asm/nospec-branch.h:360:1: warning: parameter names (without types) in function declaration ./arch/x86/include/asm/nospec-branch.h: In function ‘mds_user_clear_cpu_buffers’: ./arch/x86/include/asm/nospec-branch.h:394:6: error: implicit declaration of function ‘static_branch_likely’ [-Werror=implicit-function-declaration] 394 | if (static_branch_likely(&mds_user_clear)) | ^~~~~~~~~~~~~~~~~~~~ ./arch/x86/include/asm/nospec-branch.h:394:28: error: ‘mds_user_clear’ undeclared (first use in this function) 394 | if (static_branch_likely(&mds_user_clear)) | ^~~~~~~~~~~~~~ ./arch/x86/include/asm/nospec-branch.h:394:28: note: each undeclared identifier is reported only once for each function it appears in cc1: some warnings being treated as errors Kbuild:57: recipe for target 'arch/x86/kernel/asm-offsets.s' failed make[1]: *** [arch/x86/kernel/asm-offsets.s] Error 1 Makefile:1227: recipe for target 'prepare0' failed make: *** [prepare0] Error 2 `, `./arch/x86/include/asm/nospec-branch.h:360:1: error: type defaults to 'int' in declaration of 'DECLARE_STATIC_KEY_FALSE' [-Werror=implicit-int] ./arch/x86/include/asm/nospec-branch.h:394:6: error: implicit declaration of function 'static_branch_likely' [-Werror=implicit-function-declaration] ./arch/x86/include/asm/nospec-branch.h:394:28: error: 'mds_user_clear' undeclared (first use in this function)`, "/some/unrelated/path", "arch/x86/include/asm/nospec-branch.h", }, {` CC fs/notify/group.o CC lib/zlib_deflate/deftree.o CC net/ipv4/devinet.o CC arch/x86/kernel/apic/apic_noop.o CC arch/x86/kernel/crash_core_64.o CC arch/x86/kernel/machine_kexec_64.o In file included from kernel/rcu/update.c:562: kernel/rcu/tasks.h: In function ‘show_rcu_tasks_gp_kthreads’: kernel/rcu/tasks.h:1070:37: error: ‘rcu_tasks_rude’ undeclared (first use in this function); did you mean ‘rcu_tasks_qs’? 1070 | show_rcu_tasks_generic_gp_kthread(&rcu_tasks_rude, ""); | ^~~~~~~~~~~~~~ | rcu_tasks_qs kernel/rcu/tasks.h:1070:37: note: each undeclared identifier is reported only once for each function it appears in scripts/Makefile.build:267: recipe for target 'kernel/rcu/update.o' failed make[2]: *** [kernel/rcu/update.o] Error 1 scripts/Makefile.build:505: recipe for target 'kernel/rcu' failed make[1]: *** [kernel/rcu] Error 2 make[1]: *** Waiting for unfinished jobs.... CC net/ipv4/af_inet.o CC crypto/blowfish_common.o CC arch/x86/kernel/apic/ipi.o CC sound/hda/hdac_controller.o `, "kernel/rcu/tasks.h:1070:37: error: 'rcu_tasks_rude' undeclared (first use in this function); did you mean 'rcu_tasks_qs'?", "", "kernel/rcu/tasks.h", }, {` CC arch/x86/boot/compressed/kaslr.o AS arch/x86/boot/compressed/mem_encrypt.o CC arch/x86/boot/compressed/kaslr_64.o CC arch/x86/boot/compressed/pgtable_64.o CC arch/x86/boot/compressed/acpi.o clang-10: /home/glider/llvm-project/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp:941: void {anonymous}::X86AsmParser::SwitchMode(unsigned int): Assertion 'FeatureBitset({mode}) == (STI.getFeatureBits() & AllModes)' failed. Stack dump: 0. Program arguments: /syzkaller/clang-kmsan/bin/clang-10 -cc1as -triple x86_64-unknown-linux-gnu -filetype obj -main-file-name head_64.S -target-cpu x86-64 -target-feature -mmx -target-feature -sse -I ./arch/x86/include -I ./arch/x86/include/generated -I ./include -I ./arch/x86/include/uapi -I ./arch/x86/include/generated/uapi -I ./include/uapi -I ./include/generated/uapi -fdebug-compilation-dir /syzkaller/managers/upstream-kmsan-gce/kernel -dwarf-debug-producer clang version 10.0.0 (/home/glider/llvm-project/clang c2443155a0fb245c8f17f2c1c72b6ea391e86e81) -I ./arch/x86/include -I ./arch/x86/include/generated -I ./include -I ./arch/x86/include/uapi -I ./arch/x86/include/generated/uapi -I ./include/uapi -I ./include/generated/uapi -dwarf-version=4 -mrelocation-model pic -o arch/x86/boot/compressed/head_64.o /tmp/head_64-984db4.s clang-10: /home/glider/llvm-project/llvm/lib/Target/X86/AsmParser/X86AsmParser.cpp:941: void {anonymous}::X86AsmParser::SwitchMode(unsigned int): Assertion 'FeatureBitset({mode}) == (STI.getFeatureBits() & AllModes)' failed. Stack dump: 0. Program arguments: /syzkaller/clang-kmsan/bin/clang-10 -cc1as -triple x86_64-unknown-linux-gnu -filetype obj -main-file-name mem_encrypt.S -target-cpu x86-64 -target-feature -mmx -target-feature -sse -I ./arch/x86/include -I ./arch/x86/include/generated -I ./include -I ./arch/x86/include/uapi -I ./arch/x86/include/generated/uapi -I ./include/uapi -I ./include/generated/uapi -fdebug-compilation-dir /syzkaller/managers/upstream-kmsan-gce/kernel -dwarf-debug-producer clang version 10.0.0 (/home/glider/llvm-project/clang c2443155a0fb245c8f17f2c1c72b6ea391e86e81) -I ./arch/x86/include -I ./arch/x86/include/generated -I ./include -I ./arch/x86/include/uapi -I ./arch/x86/include/generated/uapi -I ./include/uapi -I ./include/generated/uapi -dwarf-version=4 -mrelocation-model pic -o arch/x86/boot/compressed/mem_encrypt.o /tmp/mem_encrypt-3c62ac.s /syzkaller/clang-kmsan/bin/clang-10(_ZN4llvm3sys15PrintStackTraceERNS_11raw_ostreamE+0x1a)[0x285af4a] /syzkaller/clang-kmsan/bin/clang-10(_ZN4llvm3sys15PrintStackTraceERNS_11raw_ostreamE+0x1a)[0x285af4a] /syzkaller/clang-kmsan/bin/clang-10(_ZN4llvm3sys17RunSignalHandlersEv+0x3a)[0x2858c2a] /syzkaller/clang-kmsan/bin/clang-10(_ZN4llvm3sys17RunSignalHandlersEv+0x3a)[0x2858c2a] /syzkaller/clang-kmsan/bin/clang-10[0x2858d47] /lib/x86_64-linux-gnu/libpthread.so.0(+0x11390)[0x14fcf8ccb390] /syzkaller/clang-kmsan/bin/clang-10[0x2858d47] /lib/x86_64-linux-gnu/libpthread.so.0(+0x11390)[0x14bb99841390] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0x38)[0x14fcf7a5e428] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0x38)[0x14bb985d4428] /lib/x86_64-linux-gnu/libc.so.6(abort+0x16a)[0x14fcf7a6002a] /lib/x86_64-linux-gnu/libc.so.6(abort+0x16a)[0x14bb985d602a] /lib/x86_64-linux-gnu/libc.so.6(+0x2dbd7)[0x14fcf7a56bd7] /lib/x86_64-linux-gnu/libc.so.6(+0x2dc82)[0x14fcf7a56c82] /lib/x86_64-linux-gnu/libc.so.6(+0x2dbd7)[0x14bb985ccbd7] /lib/x86_64-linux-gnu/libc.so.6(+0x2dc82)[0x14bb985ccc82] /syzkaller/clang-kmsan/bin/clang-10[0x9aa6d8] /syzkaller/clang-kmsan/bin/clang-10[0x9aa6d8] /syzkaller/clang-kmsan/bin/clang-10[0x1b094da] /syzkaller/clang-kmsan/bin/clang-10[0x1b094da] /syzkaller/clang-kmsan/bin/clang-10[0x1b0d3a1] /syzkaller/clang-kmsan/bin/clang-10[0x1b0d3a1] /syzkaller/clang-kmsan/bin/clang-10[0x257bc55] /syzkaller/clang-kmsan/bin/clang-10[0x257bc55] /syzkaller/clang-kmsan/bin/clang-10[0x257f274] /syzkaller/clang-kmsan/bin/clang-10[0xb86f8e] /syzkaller/clang-kmsan/bin/clang-10(_Z10cc1as_mainN4llvm8ArrayRefIPKcEES2_Pv+0xc3f)[0xb8ac3f] /syzkaller/clang-kmsan/bin/clang-10(main+0x18e3)[0xaeb2d3] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)[0x14fcf7a49830] /syzkaller/clang-kmsan/bin/clang-10[0x257f274] /syzkaller/clang-kmsan/bin/clang-10[0xb7f5d9] /syzkaller/clang-kmsan/bin/clang-10[0xb86f8e] /syzkaller/clang-kmsan/bin/clang-10(_Z10cc1as_mainN4llvm8ArrayRefIPKcEES2_Pv+0xc3f)[0xb8ac3f] /syzkaller/clang-kmsan/bin/clang-10(main+0x18e3)[0xaeb2d3] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xf0)[0x14bb985bf830] /syzkaller/clang-kmsan/bin/clang-10[0xb7f5d9] clang-10: error: unable to execute command: Aborted (core dumped) clang-10: error: clang integrated assembler command failed due to signal (use -v to see invocation) clang version 10.0.0 (/home/glider/llvm-project/clang c2443155a0fb245c8f17f2c1c72b6ea391e86e81) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /syzkaller/clang/bin clang-10: note: diagnostic msg: PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace, preprocessed source, and associated run script. clang-10: error: unable to execute command: Aborted (core dumped) clang-10: error: clang integrated assembler command failed due to signal (use -v to see invocation) clang version 10.0.0 (/home/glider/llvm-project/clang c2443155a0fb245c8f17f2c1c72b6ea391e86e81) Target: x86_64-unknown-linux-gnu Thread model: posix InstalledDir: /syzkaller/clang/bin clang-10: note: diagnostic msg: PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace, preprocessed source, and associated run script. clang-10: note: diagnostic msg: ******************** PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT: Preprocessed source(s) and associated run script(s) are located at: clang-10: note: diagnostic msg: /tmp/mem_encrypt-2af6ae.S clang-10: note: diagnostic msg: /tmp/mem_encrypt-2af6ae.sh clang-10: note: diagnostic msg: ******************** scripts/Makefile.build:348: recipe for target 'arch/x86/boot/compressed/mem_encrypt.o' failed make[2]: *** [arch/x86/boot/compressed/mem_encrypt.o] Error 254 make[2]: *** Waiting for unfinished jobs.... clang-10: note: diagnostic msg: ******************** PLEASE ATTACH THE FOLLOWING FILES TO THE BUG REPORT: Preprocessed source(s) and associated run script(s) are located at: clang-10: note: diagnostic msg: /tmp/head_64-96b27a.S clang-10: note: diagnostic msg: /tmp/head_64-96b27a.sh clang-10: note: diagnostic msg: ******************** scripts/Makefile.build:348: recipe for target 'arch/x86/boot/compressed/head_64.o' failed make[2]: *** [arch/x86/boot/compressed/head_64.o] Error 254 arch/x86/boot/Makefile:115: recipe for target 'arch/x86/boot/compressed/vmlinux' failed make[1]: *** [arch/x86/boot/compressed/vmlinux] Error 2 arch/x86/Makefile:284: recipe for target 'bzImage' failed make: *** [bzImage] Error 2 `, `clang-10: error: unable to execute command: Aborted (core dumped) clang-10: error: clang integrated assembler command failed due to signal (use -v to see invocation)`, "", "", }, {` scripts/kconfig/conf --syncconfig Kconfig DESCEND objtool CALL scripts/atomic/check-atomics.sh CALL scripts/checksyscalls.sh CHK include/generated/compile.h GZIP kernel/config_data.gz CC kernel/configs.o AR kernel/built-in.a GEN .version LD vmlinux.o MODPOST vmlinux.o MODINFO modules.builtin.modinfo GEN modules.builtin LD .tmp_vmlinux1 arch/x86/platform/efi/efi_64.o: In function 'efi_thunk_set_virtual_address_map': /syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/arch/x86/platform/efi/efi_64.c:560: undefined reference to '__efi64_thunk' arch/x86/platform/efi/efi_64.o: In function 'efi_set_virtual_address_map': /syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/arch/x86/platform/efi/efi_64.c:902: undefined reference to 'efi_uv1_memmap_phys_prolog' /syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/arch/x86/platform/efi/efi_64.c:921: undefined reference to 'efi_uv1_memmap_phys_epilog' Makefile:1078: recipe for target 'vmlinux' failed make: *** [vmlinux] Error 1 `, `arch/x86/platform/efi/efi_64.c:560: undefined reference to '__efi64_thunk' arch/x86/platform/efi/efi_64.c:902: undefined reference to 'efi_uv1_memmap_phys_prolog' arch/x86/platform/efi/efi_64.c:921: undefined reference to 'efi_uv1_memmap_phys_epilog'`, "/syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel", "arch/x86/platform/efi/efi_64.c", }, {` /syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/arch/x86/platform/efi/efi_64.c:560: undefined reference to '__efi64_thunk' `, `arch/x86/platform/efi/efi_64.c:560: undefined reference to '__efi64_thunk'`, "/syzkaller/managers/upstream-linux-next-kasan-gce-root/kernel/", "arch/x86/platform/efi/efi_64.c", }, {` CC net/ipv6/ip6_output.o CC security/selinux/ss/policydb.o CC net/ipv4/route.o In file included from security/smack/smack_netfilter.c:18: ./include/linux/netfilter_ipv6.h: In function ‘nf_ipv6_br_defrag’: ./include/linux/netfilter_ipv6.h:110:9: error: implicit declaration of function ‘nf_ct_frag6_gather’ [-Werror=implicit-function-declaration] 110 | return nf_ct_frag6_gather(net, skb, user); | ^~~~~~~~~~~~~~~~~~ In file included from security/apparmor/lsm.c:27: ./include/linux/netfilter_ipv6.h: In function ‘nf_ipv6_br_defrag’: ./include/linux/netfilter_ipv6.h:110:9: error: implicit declaration of function ‘nf_ct_frag6_gather’ [-Werror=implicit-function-declaration] 110 | return nf_ct_frag6_gather(net, skb, user); | ^~~~~~~~~~~~~~~~~~ In file included from net/bridge/br_netfilter_ipv6.c:30: ./include/linux/netfilter_ipv6.h: In function ‘nf_ipv6_br_defrag’: ./include/linux/netfilter_ipv6.h:110:9: error: implicit declaration of function ‘nf_ct_frag6_gather’ [-Werror=implicit-function-declaration] 110 | return nf_ct_frag6_gather(net, skb, user); | ^~~~~~~~~~~~~~~~~~ In file included from net/bridge/br_netfilter_hooks.c:31: ./include/linux/netfilter_ipv6.h: In function ‘nf_ipv6_br_defrag’: ./include/linux/netfilter_ipv6.h:110:9: error: implicit declaration of function ‘nf_ct_frag6_gather’ [-Werror=implicit-function-declaration] 110 | return nf_ct_frag6_gather(net, skb, user); | ^~~~~~~~~~~~~~~~~~ CC net/openvswitch/datapath.o CC net/llc/llc_output.o CC net/ieee802154/core.o cc1: some warnings being treated as errors scripts/Makefile.build:278: recipe for target 'security/smack/smack_netfilter.o' failed make[2]: *** [security/smack/smack_netfilter.o] Error 1 scripts/Makefile.build:489: recipe for target 'security/smack' failed make[1]: *** [security/smack] Error 2 make[1]: *** Waiting for unfinished jobs.... CC net/lapb/lapb_iface.o CC net/netlabel/netlabel_domainhash.o CC net/netlabel/netlabel_addrlist.o `, "./include/linux/netfilter_ipv6.h:110:9: error: implicit declaration of function 'nf_ct_frag6_gather' [-Werror=implicit-function-declaration]", "", "include/linux/netfilter_ipv6.h", }, {` ld: mm/slub.o: in function '__kmem_cache_create': slub.c:(.text+0x6260): multiple definition of '__kmem_cache_create'; mm/page_alloc.o:page_alloc.c:(.text+0x1970): first defined here make: *** [Makefile:1139: vmlinux] Error 1 `, "slub.c:(.text+0x6260): multiple definition of '__kmem_cache_create'; mm/page_alloc.o:page_alloc.c:(.text+0x1970): first defined here", "", "mm/page_alloc.c", }, {` ld: mm/slub.o:(.bss+0x0): multiple definition of 'foobar'; mm/page_alloc.o:(.bss+0x34): first defined here make: *** [Makefile:1139: vmlinux] Error 1 `, "ld: mm/slub.o:(.bss+0x0): multiple definition of 'foobar'; mm/page_alloc.o:(.bss+0x34): first defined here", "", "mm/slub.c", }, {` ld.lld: error: duplicate symbol: __kmem_cache_create >>> defined at page_alloc.c >>> page_alloc.o:(__kmem_cache_create) in archive mm/built-in.a >>> defined at slub.c >>> slub.o:(.text+0x6260) in archive mm/built-in.a make: *** [Makefile:1139: vmlinux] Error 1 `, "ld.lld: error: duplicate symbol: __kmem_cache_create", "", "", // ld.lld makes it very hard to extract the file name }, {` ld.lld: error: duplicate symbol: foobar >>> defined at page_alloc.c >>> page_alloc.o:(foobar) in archive mm/built-in.a >>> defined at slub.c >>> slub.o:(.bss+0x0) in archive mm/built-in.a make: *** [Makefile:1139: vmlinux] Error 1 `, "ld.lld: error: duplicate symbol: foobar", "", "", // ld.lld makes it very hard to extract the file name }, {` mm/page_alloc.o:(.data+0x1a40): multiple definition of '__kmem_cache_create' mm/slub.o:(.data+0x7a0): first defined here Makefile:1160: recipe for target 'vmlinux' failed make: *** [vmlinux] Error 1 `, "mm/page_alloc.o:(.data+0x1a40): multiple definition of '__kmem_cache_create'", "", "mm/page_alloc.c", }, }