Buildresult: linus/um-defconfig/um-x86_64-gcc12 built on Feb 2, 13:39

kisskb

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Status:	OK
Date/Time:	Feb 2, 13:39
Duration:	0:00:38.275806
Builder:	ka4
Revision:	Kconfig: Disable -Wstringop-overflow for GCC globally (`021533194476035883300d60fbb3136426ac8ea5)`
Target:	linus/um-defconfig/um-x86_64-gcc12
Branch:	linus
Compiler:	um-x86_64-gcc12 (x86_64-linux-gcc.br_real (Buildroot 2021.11-4428-g6b6741b) 12.2.0 / GNU ld (GNU Binutils) 2.39)
Config:	defconfig (download)
Log:	Download original Possible warnings (51) arch/x86/um/user-offsets.c:17:6: warning: no previous prototype for ‘foo’ [-Wmissing-prototypes] arch/x86/um/shared/sysdep/kernel-offsets.h:9:6: warning: no previous prototype for ‘foo’ [-Wmissing-prototypes] arch/x86/um/bugs_64.c:9:6: warning: no previous prototype for ‘arch_check_bugs’ [-Wmissing-prototypes] arch/x86/um/bugs_64.c:13:6: warning: no previous prototype for ‘arch_examine_signal’ [-Wmissing-prototypes] arch/x86/um/vdso/um_vdso.c:16:5: warning: no previous prototype for ‘__vdso_clock_gettime’ [-Wmissing-prototypes] arch/x86/um/vdso/um_vdso.c:30:5: warning: no previous prototype for ‘__vdso_gettimeofday’ [-Wmissing-prototypes] arch/x86/um/vdso/um_vdso.c:44:21: warning: no previous prototype for ‘__vdso_time’ [-Wmissing-prototypes] arch/x86/um/vdso/um_vdso.c:57:1: warning: no previous prototype for ‘__vdso_getcpu’ [-Wmissing-prototypes] arch/x86/um/os-Linux/registers.c:146:15: warning: no previous prototype for ‘get_thread_reg’ [-Wmissing-prototypes] arch/x86/um/fault.c:18:5: warning: no previous prototype for ‘arch_fixup’ [-Wmissing-prototypes] arch/x86/um/os-Linux/mcontext.c:7:6: warning: no previous prototype for ‘get_regs_from_mc’ [-Wmissing-prototypes] arch/um/os-Linux/skas/process.c:107:6: warning: no previous prototype for ‘wait_stub_done’ [-Wmissing-prototypes] arch/um/os-Linux/skas/process.c:683:6: warning: no previous prototype for ‘__switch_mm’ [-Wmissing-prototypes] arch/um/kernel/skas/process.c:36:12: warning: no previous prototype for ‘start_uml’ [-Wmissing-prototypes] arch/x86/um/ptrace_64.c:111:5: warning: no previous prototype for ‘poke_user’ [-Wmissing-prototypes] arch/x86/um/ptrace_64.c:171:5: warning: no previous prototype for ‘peek_user’ [-Wmissing-prototypes] arch/um/kernel/skas/mmu.c:17:5: warning: no previous prototype for ‘init_new_context’ [-Wmissing-prototypes] arch/um/kernel/skas/mmu.c:60:6: warning: no previous prototype for ‘destroy_context’ [-Wmissing-prototypes] arch/um/os-Linux/drivers/ethertap_kern.c:66:5: warning: no previous prototype for ‘ethertap_setup’ [-Wmissing-prototypes] arch/x86/um/signal.c:560:6: warning: no previous prototype for ‘sys_rt_sigreturn’ [-Wmissing-prototypes] arch/um/os-Linux/drivers/tuntap_kern.c:56:5: warning: no previous prototype for ‘tuntap_setup’ [-Wmissing-prototypes] arch/um/os-Linux/main.c:187:7: warning: no previous prototype for ‘__wrap_malloc’ [-Wmissing-prototypes] arch/um/os-Linux/main.c:208:7: warning: no previous prototype for ‘__wrap_calloc’ [-Wmissing-prototypes] arch/um/os-Linux/main.c:222:6: warning: no previous prototype for ‘__wrap_free’ [-Wmissing-prototypes] arch/um/os-Linux/mem.c:28:6: warning: no previous prototype for ‘kasan_map_memory’ [-Wmissing-prototypes] arch/um/os-Linux/mem.c:212:13: warning: no previous prototype for ‘check_tmpexec’ [-Wmissing-prototypes] arch/um/os-Linux/signal.c:75:6: warning: no previous prototype for ‘sig_handler’ [-Wmissing-prototypes] arch/um/os-Linux/signal.c:111:6: warning: no previous prototype for ‘timer_alarm_handler’ [-Wmissing-prototypes] arch/um/os-Linux/start_up.c:301:12: warning: no previous prototype for ‘parse_iomem’ [-Wmissing-prototypes] arch/um/kernel/mem.c:202:8: warning: no previous prototype for ‘pgd_alloc’ [-Wmissing-prototypes] arch/um/kernel/mem.c:215:7: warning: no previous prototype for ‘uml_kmalloc’ [-Wmissing-prototypes] arch/um/kernel/process.c:51:5: warning: no previous prototype for ‘pid_to_processor_id’ [-Wmissing-prototypes] arch/um/kernel/process.c:87:7: warning: no previous prototype for ‘__switch_to’ [-Wmissing-prototypes] arch/um/kernel/process.c:140:6: warning: no previous prototype for ‘fork_handler’ [-Wmissing-prototypes] arch/um/kernel/process.c:217:6: warning: no previous prototype for ‘arch_cpu_idle’ [-Wmissing-prototypes] arch/um/kernel/process.c:253:5: warning: no previous prototype for ‘copy_to_user_proc’ [-Wmissing-prototypes] arch/um/kernel/process.c:263:5: warning: no previous prototype for ‘clear_user_proc’ [-Wmissing-prototypes] arch/um/kernel/process.c:271:6: warning: no previous prototype for ‘set_using_sysemu’ [-Wmissing-prototypes] arch/um/kernel/process.c:278:5: warning: no previous prototype for ‘get_using_sysemu’ [-Wmissing-prototypes] arch/um/kernel/process.c:316:12: warning: no previous prototype for ‘make_proc_sysemu’ [-Wmissing-prototypes] arch/um/kernel/process.c:348:15: warning: no previous prototype for ‘arch_align_stack’ [-Wmissing-prototypes] arch/x86/um/syscalls_64.c:48:6: warning: no previous prototype for ‘arch_switch_to’ [-Wmissing-prototypes] arch/um/kernel/reboot.c:45:6: warning: no previous prototype for ‘machine_restart’ [-Wmissing-prototypes] arch/um/kernel/reboot.c:51:6: warning: no previous prototype for ‘machine_power_off’ [-Wmissing-prototypes] arch/um/kernel/reboot.c:57:6: warning: no previous prototype for ‘machine_halt’ [-Wmissing-prototypes] arch/um/kernel/tlb.c:579:6: warning: no previous prototype for ‘flush_tlb_mm_range’ [-Wmissing-prototypes] arch/um/kernel/tlb.c:594:6: warning: no previous prototype for ‘force_flush_all’ [-Wmissing-prototypes] arch/um/kernel/kmsg_dump.c:60:12: warning: no previous prototype for ‘kmsg_dumper_stdout_init’ [-Wmissing-prototypes] arch/um/kernel/um_arch.c:408:19: warning: no previous prototype for ‘read_initrd’ [-Wmissing-prototypes] arch/um/kernel/um_arch.c:461:7: warning: no previous prototype for ‘text_poke’ [-Wmissing-prototypes] arch/um/kernel/um_arch.c:473:6: warning: no previous prototype for ‘text_poke_sync’ [-Wmissing-prototypes] Full Log # git rev-parse -q --verify 021533194476035883300d60fbb3136426ac8ea5^{commit} 021533194476035883300d60fbb3136426ac8ea5 already have revision, skipping fetch # git checkout -q -f -B kisskb 021533194476035883300d60fbb3136426ac8ea5 # git clean -qxdf # < git log -1 # commit 021533194476035883300d60fbb3136426ac8ea5 # Author: Linus Torvalds <torvalds@linux-foundation.org> # Date: Thu Feb 1 14:57:17 2024 -0800 # # Kconfig: Disable -Wstringop-overflow for GCC globally # # It turns out it was never just gcc-11 that was broken. Apparently it # just happens to work on x86-64 with other gcc versions. # # On arm64, I see warnings with gcc version 13.2.1, and the kernel test # robot reports the same problem on s390 with gcc 13.2.0. # # Admittedly it seems to be just the new Xe drm driver, but this is # keeping me from doing my normal arm64 build testing. So it gets # reverted until somebody figures out what causes the problem (and why it # doesn't show on x86-64, which is what makes me suspect it was never just # about gcc-11, and more about just random happenstance). # # This also changes the Kconfig naming a bit - just make the "disable this # for GCC" conditional be one simple Kconfig entry, and we can put the gcc # version dependencies in that entry once we figure out what the correct # rules are. # # The version dependency _may_ still end up being "gcc version larger than # 11" if the issue is purely in the Xe driver, but even if that ends up # the case, let's make that all part of the "GCC_NO_STRINGOP_OVERFLOW" # logic. # # For now, we just disable it for all gcc versions while the exact cause # is unknown. # # Link: https://lore.kernel.org/all/202401161031.hjGJHMiJ-lkp@intel.com/T/ # Cc: Gustavo A. R. Silva <gustavoars@kernel.org> # Cc: Kees Cook <keescook@chromium.org> # Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> # < /opt/cross/kisskb/x86-64--glibc--bleeding-edge-2022.08-1/bin/x86_64-linux-gcc --version # < /opt/cross/kisskb/x86-64--glibc--bleeding-edge-2022.08-1/bin/x86_64-linux-ld --version # < git log --format=%s --max-count=1 021533194476035883300d60fbb3136426ac8ea5 # make -s -j 40 ARCH=um O=/kisskb/build/linus_defconfig_um-x86_64-gcc12 CROSS_COMPILE=/opt/cross/kisskb/x86-64--glibc--bleeding-edge-2022.08-1/bin/x86_64-linux- SUBARCH=x86_64 defconfig # < make -s -j 40 ARCH=um O=/kisskb/build/linus_defconfig_um-x86_64-gcc12 CROSS_COMPILE=/opt/cross/kisskb/x86-64--glibc--bleeding-edge-2022.08-1/bin/x86_64-linux- SUBARCH=x86_64 help # make -s -j 40 ARCH=um O=/kisskb/build/linus_defconfig_um-x86_64-gcc12 CROSS_COMPILE=/opt/cross/kisskb/x86-64--glibc--bleeding-edge-2022.08-1/bin/x86_64-linux- SUBARCH=x86_64 olddefconfig # make -s -j 40 ARCH=um O=/kisskb/build/linus_defconfig_um-x86_64-gcc12 CROSS_COMPILE=/opt/cross/kisskb/x86-64--glibc--bleeding-edge-2022.08-1/bin/x86_64-linux- SUBARCH=x86_64 /kisskb/src/arch/x86/um/user-offsets.c:17:6: warning: no previous prototype for ‘foo’ [-Wmissing-prototypes] 17 \| void foo(void) \| ^~~ In file included from /kisskb/src/arch/um/kernel/asm-offsets.c:1: /kisskb/src/arch/x86/um/shared/sysdep/kernel-offsets.h:9:6: warning: no previous prototype for ‘foo’ [-Wmissing-prototypes] 9 \| void foo(void) \| ^~~ /kisskb/src/arch/x86/um/bugs_64.c:9:6: warning: no previous prototype for ‘arch_check_bugs’ [-Wmissing-prototypes] 9 \| void arch_check_bugs(void) \| ^~~~~~~~~~~~~~~ /kisskb/src/arch/x86/um/bugs_64.c:13:6: warning: no previous prototype for ‘arch_examine_signal’ [-Wmissing-prototypes] 13 \| void arch_examine_signal(int sig, struct uml_pt_regs regs) \| ^~~~~~~~~~~~~~~~~~~ /kisskb/src/arch/x86/um/vdso/um_vdso.c:16:5: warning: no previous prototype for ‘__vdso_clock_gettime’ [-Wmissing-prototypes] 16 \| int __vdso_clock_gettime(clockid_t clock, struct __kernel_old_timespec ts) \| ^~~~~~~~~~~~~~~~~~~~ /kisskb/src/arch/x86/um/vdso/um_vdso.c:30:5: warning: no previous prototype for ‘__vdso_gettimeofday’ [-Wmissing-prototypes] 30 \| int __vdso_gettimeofday(struct __kernel_old_timeval tv, struct timezone tz) \| ^~~~~~~~~~~~~~~~~~~ /kisskb/src/arch/x86/um/vdso/um_vdso.c:44:21: warning: no previous prototype for ‘__vdso_time’ [-Wmissing-prototypes] 44 \| __kernel_old_time_t __vdso_time(__kernel_old_time_t t) \| ^~~~~~~~~~~ /kisskb/src/arch/x86/um/vdso/um_vdso.c:57:1: warning: no previous prototype for ‘__vdso_getcpu’ [-Wmissing-prototypes] 57 \| __vdso_getcpu(unsigned cpu, unsigned node, struct getcpu_cache unused) \| ^~~~~~~~~~~~~ /kisskb/src/arch/x86/um/os-Linux/registers.c:146:15: warning: no previous prototype for ‘get_thread_reg’ [-Wmissing-prototypes] 146 \| unsigned long get_thread_reg(int reg, jmp_buf buf) \| ^~~~~~~~~~~~~~ /kisskb/src/arch/x86/um/fault.c:18:5: warning: no previous prototype for ‘arch_fixup’ [-Wmissing-prototypes] 18 \| int arch_fixup(unsigned long address, struct uml_pt_regs regs) \| ^~~~~~~~~~ /kisskb/src/arch/x86/um/os-Linux/mcontext.c:7:6: warning: no previous prototype for ‘get_regs_from_mc’ [-Wmissing-prototypes] 7 \| void get_regs_from_mc(struct uml_pt_regs regs, mcontext_t mc) \| ^~~~~~~~~~~~~~~~ /kisskb/src/arch/um/os-Linux/skas/process.c:107:6: warning: no previous prototype for ‘wait_stub_done’ [-Wmissing-prototypes] 107 \| void wait_stub_done(int pid) \| ^~~~~~~~~~~~~~ /kisskb/src/arch/um/os-Linux/skas/process.c:683:6: warning: no previous prototype for ‘__switch_mm’ [-Wmissing-prototypes] 683 \| void __switch_mm(struct mm_id mm_idp) \| ^~~~~~~~~~~ /kisskb/src/arch/um/kernel/skas/process.c:36:12: warning: no previous prototype for ‘start_uml’ [-Wmissing-prototypes] 36 \| int __init start_uml(void) \| ^~~~~~~~~ /kisskb/src/arch/x86/um/ptrace_64.c:111:5: warning: no previous prototype for ‘poke_user’ [-Wmissing-prototypes] 111 \| int poke_user(struct task_struct child, long addr, long data) \| ^~~~~~~~~ /kisskb/src/arch/x86/um/ptrace_64.c:171:5: warning: no previous prototype for ‘peek_user’ [-Wmissing-prototypes] 171 \| int peek_user(struct task_struct child, long addr, long data) \| ^~~~~~~~~ /kisskb/src/arch/um/kernel/skas/mmu.c:17:5: warning: no previous prototype for ‘init_new_context’ [-Wmissing-prototypes] 17 \| int init_new_context(struct task_struct task, struct mm_struct mm) \| ^~~~~~~~~~~~~~~~ /kisskb/src/arch/um/kernel/skas/mmu.c:60:6: warning: no previous prototype for ‘destroy_context’ [-Wmissing-prototypes] 60 \| void destroy_context(struct mm_struct mm) \| ^~~~~~~~~~~~~~~ /kisskb/src/arch/um/os-Linux/drivers/ethertap_kern.c:66:5: warning: no previous prototype for ‘ethertap_setup’ [-Wmissing-prototypes] 66 \| int ethertap_setup(char str, char mac_out, void data) \| ^~~~~~~~~~~~~~ /kisskb/src/arch/x86/um/signal.c:560:6: warning: no previous prototype for ‘sys_rt_sigreturn’ [-Wmissing-prototypes] 560 \| long sys_rt_sigreturn(void) \| ^~~~~~~~~~~~~~~~ /kisskb/src/arch/um/os-Linux/drivers/tuntap_kern.c:56:5: warning: no previous prototype for ‘tuntap_setup’ [-Wmissing-prototypes] 56 \| int tuntap_setup(char str, char mac_out, void data) \| ^~~~~~~~~~~~ /kisskb/src/arch/um/os-Linux/main.c:187:7: warning: no previous prototype for ‘__wrap_malloc’ [-Wmissing-prototypes] 187 \| void __wrap_malloc(int size) \| ^~~~~~~~~~~~~ /kisskb/src/arch/um/os-Linux/main.c:208:7: warning: no previous prototype for ‘__wrap_calloc’ [-Wmissing-prototypes] 208 \| void __wrap_calloc(int n, int size) \| ^~~~~~~~~~~~~ /kisskb/src/arch/um/os-Linux/main.c:222:6: warning: no previous prototype for ‘__wrap_free’ [-Wmissing-prototypes] 222 \| void __wrap_free(void ptr) \| ^~~~~~~~~~~ /kisskb/src/arch/um/os-Linux/mem.c:28:6: warning: no previous prototype for ‘kasan_map_memory’ [-Wmissing-prototypes] 28 \| void kasan_map_memory(void start, size_t len) \| ^~~~~~~~~~~~~~~~ /kisskb/src/arch/um/os-Linux/mem.c:212:13: warning: no previous prototype for ‘check_tmpexec’ [-Wmissing-prototypes] 212 \| void __init check_tmpexec(void) \| ^~~~~~~~~~~~~ /kisskb/src/arch/um/os-Linux/signal.c:75:6: warning: no previous prototype for ‘sig_handler’ [-Wmissing-prototypes] 75 \| void sig_handler(int sig, struct siginfo si, mcontext_t mc) \| ^~~~~~~~~~~ /kisskb/src/arch/um/os-Linux/signal.c:111:6: warning: no previous prototype for ‘timer_alarm_handler’ [-Wmissing-prototypes] 111 \| void timer_alarm_handler(int sig, struct siginfo unused_si, mcontext_t mc) \| ^~~~~~~~~~~~~~~~~~~ /kisskb/src/arch/um/os-Linux/start_up.c:301:12: warning: no previous prototype for ‘parse_iomem’ [-Wmissing-prototypes] 301 \| int __init parse_iomem(char str, int add) \| ^~~~~~~~~~~ /kisskb/src/arch/um/kernel/mem.c:202:8: warning: no previous prototype for ‘pgd_alloc’ [-Wmissing-prototypes] 202 \| pgd_t pgd_alloc(struct mm_struct mm) \| ^~~~~~~~~ /kisskb/src/arch/um/kernel/mem.c:215:7: warning: no previous prototype for ‘uml_kmalloc’ [-Wmissing-prototypes] 215 \| void uml_kmalloc(int size, int flags) \| ^~~~~~~~~~~ /kisskb/src/arch/um/kernel/process.c:51:5: warning: no previous prototype for ‘pid_to_processor_id’ [-Wmissing-prototypes] 51 \| int pid_to_processor_id(int pid) \| ^~~~~~~~~~~~~~~~~~~ /kisskb/src/arch/um/kernel/process.c:87:7: warning: no previous prototype for ‘__switch_to’ [-Wmissing-prototypes] 87 \| void __switch_to(struct task_struct from, struct task_struct to) \| ^~~~~~~~~~~ /kisskb/src/arch/um/kernel/process.c:140:6: warning: no previous prototype for ‘fork_handler’ [-Wmissing-prototypes] 140 \| void fork_handler(void) \| ^~~~~~~~~~~~ /kisskb/src/arch/um/kernel/process.c:217:6: warning: no previous prototype for ‘arch_cpu_idle’ [-Wmissing-prototypes] 217 \| void arch_cpu_idle(void) \| ^~~~~~~~~~~~~ /kisskb/src/arch/um/kernel/process.c:253:5: warning: no previous prototype for ‘copy_to_user_proc’ [-Wmissing-prototypes] 253 \| int copy_to_user_proc(void __user to, void from, int size) \| ^~~~~~~~~~~~~~~~~ /kisskb/src/arch/um/kernel/process.c:263:5: warning: no previous prototype for ‘clear_user_proc’ [-Wmissing-prototypes] 263 \| int clear_user_proc(void __user buf, int size) \| ^~~~~~~~~~~~~~~ /kisskb/src/arch/um/kernel/process.c:271:6: warning: no previous prototype for ‘set_using_sysemu’ [-Wmissing-prototypes] 271 \| void set_using_sysemu(int value) \| ^~~~~~~~~~~~~~~~ /kisskb/src/arch/um/kernel/process.c:278:5: warning: no previous prototype for ‘get_using_sysemu’ [-Wmissing-prototypes] 278 \| int get_using_sysemu(void) \| ^~~~~~~~~~~~~~~~ /kisskb/src/arch/um/kernel/process.c:316:12: warning: no previous prototype for ‘make_proc_sysemu’ [-Wmissing-prototypes] 316 \| int __init make_proc_sysemu(void) \| ^~~~~~~~~~~~~~~~ /kisskb/src/arch/um/kernel/process.c:348:15: warning: no previous prototype for ‘arch_align_stack’ [-Wmissing-prototypes] 348 \| unsigned long arch_align_stack(unsigned long sp) \| ^~~~~~~~~~~~~~~~ /kisskb/src/arch/x86/um/syscalls_64.c:48:6: warning: no previous prototype for ‘arch_switch_to’ [-Wmissing-prototypes] 48 \| void arch_switch_to(struct task_struct to) \| ^~~~~~~~~~~~~~ /kisskb/src/arch/um/kernel/reboot.c:45:6: warning: no previous prototype for ‘machine_restart’ [-Wmissing-prototypes] 45 \| void machine_restart(char * __unused) \| ^~~~~~~~~~~~~~~ /kisskb/src/arch/um/kernel/reboot.c:51:6: warning: no previous prototype for ‘machine_power_off’ [-Wmissing-prototypes] 51 \| void machine_power_off(void) \| ^~~~~~~~~~~~~~~~~ /kisskb/src/arch/um/kernel/reboot.c:57:6: warning: no previous prototype for ‘machine_halt’ [-Wmissing-prototypes] 57 \| void machine_halt(void) \| ^~~~~~~~~~~~ /kisskb/src/arch/um/kernel/tlb.c:579:6: warning: no previous prototype for ‘flush_tlb_mm_range’ [-Wmissing-prototypes] 579 \| void flush_tlb_mm_range(struct mm_struct mm, unsigned long start, \| ^~~~~~~~~~~~~~~~~~ /kisskb/src/arch/um/kernel/tlb.c:594:6: warning: no previous prototype for ‘force_flush_all’ [-Wmissing-prototypes] 594 \| void force_flush_all(void) \| ^~~~~~~~~~~~~~~ /kisskb/src/arch/um/kernel/kmsg_dump.c:60:12: warning: no previous prototype for ‘kmsg_dumper_stdout_init’ [-Wmissing-prototypes] 60 \| int __init kmsg_dumper_stdout_init(void) \| ^~~~~~~~~~~~~~~~~~~~~~~ /kisskb/src/arch/um/kernel/um_arch.c:408:19: warning: no previous prototype for ‘read_initrd’ [-Wmissing-prototypes] 408 \| int __init __weak read_initrd(void) \| ^~~~~~~~~~~ /kisskb/src/arch/um/kernel/um_arch.c:461:7: warning: no previous prototype for ‘text_poke’ [-Wmissing-prototypes] 461 \| void text_poke(void addr, const void opcode, size_t len) \| ^~~~~~~~~ /kisskb/src/arch/um/kernel/um_arch.c:473:6: warning: no previous prototype for ‘text_poke_sync’ [-Wmissing-prototypes] 473 \| void text_poke_sync(void) \| ^~~~~~~~~~~~~~ LINK linux Completed OK # rm -rf /kisskb/build/linus_defconfig_um-x86_64-gcc12 # Build took: 0:00:38.275806

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