On Mon, Sep 28, 2020 at 10:30 PM Xu, Yanfei <[email protected]> wrote: > > > > On 9/9/20 12:02 PM, Bruce Ashfield wrote: > > On Tue, Sep 8, 2020 at 8:23 AM Bruce Ashfield via > > lists.yoctoproject.org > > <[email protected]> wrote: > >> > >> On Tue, Sep 8, 2020 at 5:15 AM Xu, Yanfei <[email protected]> wrote: > >>> > >>> > >>> > >>> On 9/8/20 10:26 AM, Xu, Yanfei wrote: > >>>> > >>>> > >>>> On 9/8/20 10:01 AM, Bruce Ashfield wrote: > >>>>> On Mon, Sep 7, 2020 at 11:43 AM Xu, Yanfei <[email protected]> > >>>>> wrote: > >>>>>> > >>>>>> > >>>>>> > >>>>>> On 9/7/20 7:53 PM, Bruce Ashfield wrote: > >>>>>>> On Mon, Sep 7, 2020 at 5:56 AM Xu, Yanfei <[email protected]> > >>>>>>> wrote: > >>>>>>>> > >>>>>>>> Hi Bruce, > >>>>>>>> > >>>>>>>> > >>>>>>>> When I excuted "make -C /usr/src/kernel scripts prepare" on target > >>>>>>>> mechine, I will be asked for choicing if to enable "GCC_PLUGINS" and > >>>>>>>> other configurations depend on "GCC_PLUGINS" (The .config file didn,t > >>>>>>>> contain 'GCC_PLUGINS is not set') > >>>>>>>> But there were never be asked for these before yocto add the > >>>>>>>> configuration which is "EXTRA_OEMAKE += " HOSTCXX="${BUILD_CXX} > >>>>>>>> ${BUILD_CXXFLAGS} ${BUILD_LDFLAGS}"" > >>>>>>>> > >>>>>>> > >>>>>>> Which machine and configuration are you seeing that in ? I've modified > >>>>>>> devsrc several times to remove the triggers that cause that behaviour, > >>>>>>> and would like to see how it crept back in. > >>>>>>> > >>>>>> Firstly， the commit：'kernel.bbclass: Configuration for environment > >>>>>> with > >>>>>> HOSTCXX' expose this problem. After revert it， everything will be > >>>>>> normal. > >>>>>> > >>>>>> Secondly， the mechine is qemuarm64. Which configuration you mean？ The > >>>>> > >>>>> yes, which machine and image type. > >>>>> > >>>>>> project's configuration is normal and only with ""IMAGE_INSTALL += > >>>>>> "packagegroup-core-buildessential". The configurations of Kconfig for > >>>>>> choosing is as the blow log messages. > >>>>> > >>>>> I assume you are also installing kernel-devsrc on the target ? > >>>>> Yes. > >>>> > >>>>>> > >>>>>>>> With these, I met a failure during compiling an external module on > >>>>>>>> target mechine after I enabled the GCC_PLUGINS and > >>>>>>>> CONFIG_GCC_PLUGIN_RANDSTRUCT by above methond. Failure messages as > >>>>>>>> below. There might be some other unexpected situations with > >>>>>>>> GCC_PLUGIN > >>>>>>>> enabled. > >>>>>>>> > >>>>>>>> In my oppinion, GCC_PLUGINS is rarely used, and It can be enable by > >>>>>>>> who > >>>>>>>> want to use it. So how about disable it by defualt in > >>>>>>>> ktypes/base/base.cfg file? Do you think it is appropriate? > >>>>>>> > >>>>>>> I don't disagree, but also, the configuration phase shouldn't be > >>>>>>> triggered on target, so I'll fix that behaviour first. > >>>>>> > >>>>>> That's great！ > >>>>> > >>>>> I was just able to build master, with kernel 5.8 and run the scripts > >>>>> prepare target without triggering this: > >>>>> > >>>>> scripts/Makefile.build:415: warning: overriding recipe for target > >>>>> 'modules.order' > >>>>> Makefile:1371: warning: ignoring old recipe for target 'modules.order' > >>>>> CC arch/arm64/kernel/vdso/vgettimeofday.o > >>>>> AS arch/arm64/kernel/vdso/note.o > >>>>> AS arch/arm64/kernel/vdso/sigreturn.o > >>>>> LD arch/arm64/kernel/vdso/vdso.so.dbg > >>>>> VDSOSYM include/generated/vdso-offsets.h > >>>>> make: Leaving directory '/lib/modules/5.8.5-yocto-standard/build' > >>>>> root@qemuarm64:/usr/src/kernel# > >>>>> > >>>>> Which is what I expected, since this is an effort I made when > >>>>> introducing the 5.8 kernel. I'll retest with > >>>>> 5.4 now. > >>>> I'm sorry for omitting an imformation about that my project added many > >>>> nativesdks. I will ensure if the issue was triggered by these soon. > >>> > >>> These nativesdks are irrelevant to the result. > >>> > >>> I separately build projects with kernel5.4 and kernel5.8. There are some > >>> differences about CONFIG_GCC_PLUGINS of /usr/src/kernel/.config on > >>> target machine. > >>> > >>> -----------5.4----------------- > >>> CONFIG_PLUGIN_HOSTCC="" > >>> CONFIG_HAVE_GCC_PLUGINS=y > >>> # end of General architecture-dependent options > >>> > >>> -----------5.8----------------- > >>> CONFIG_HAVE_GCC_PLUGINS=y > >>> CONFIG_GCC_PLUGINS=y > >>> # CONFIG_GCC_PLUGIN_LATENT_ENTROPY is not set > >>> # CONFIG_GCC_PLUGIN_RANDSTRUCT is not set > >>> # end of General architecture-dependent options > >> > >> Also, with the 5.4 kernel, I was able to trigger one on-target > >> configuration run. I'll look into that first, and then get back to the > >> gcc plugins config question. > > > > I have a fix for this now, and it will work for both 5.8 and 5.4 kernels. > > > > I need to test it a bit more, but I'll send the patch on my Wednesday > > (since it is already Wednesday for you :) > > > > Bruce > > > Hi Bruce, > > With your fix, the problem is still here when I test it these day. And > It only occur on 5.4 kernel. > > message as blow: > > root@qemuarm64:/module_path/module_example# > root@qemuarm64:/module_path/module_example# cat /proc/version > Linux version 5.4.65-yocto-standard (oe-user@oe-host) (gcc version > 10.2.0 (GCC)) #1 SMP PREEMPT Mon Sep 28 04:05:32 UTC 2020 > root@qemuarm64:/module_path/module_example# > root@qemuarm64:/module_path/module_example# > aret@qemuarm64:/module_path/module_example# make -C /usr/src/kernel > scripts prepa > make: Entering directory '/lib/modules/5.4.65-yocto-standard/build' > scripts/kconfig/conf --syncconfig Kconfig > *
You are building something non-standard. If this is with master, I just confirmed that both qemuarm64 and qemux86-64 work with no issues. Here's the log of the arm test: root@qemuarm64:/lib/modules/5.4.65-yocto-standard/build# make scripts prepare HOSTCC scripts/basic/fixdep HOSTCC scripts/dtc/dtc.o HOSTCC scripts/dtc/flattree.o HOSTCC scripts/dtc/fstree.o HOSTCC scripts/dtc/data.o HOSTCC scripts/dtc/livetree.o HOSTCC scripts/dtc/treesource.o HOSTCC scripts/dtc/srcpos.o HOSTCC scripts/dtc/checks.o HOSTCC scripts/dtc/util.o LEX scripts/dtc/dtc-lexer.lex.c YACC scripts/dtc/dtc-parser.tab.[ch] HOSTCC scripts/dtc/dtc-lexer.lex.o HOSTCC scripts/dtc/dtc-parser.tab.o HOSTLD scripts/dtc/dtc HOSTCC scripts/kallsyms HOSTCC scripts/conmakehash HOSTCC scripts/recordmcount HOSTCC scripts/sortextable WRAP arch/arm64/include/generated/uapi/asm/kvm_para.h WRAP arch/arm64/include/generated/uapi/asm/errno.h WRAP arch/arm64/include/generated/uapi/asm/ioctl.h WRAP arch/arm64/include/generated/uapi/asm/ioctls.h WRAP arch/arm64/include/generated/uapi/asm/ipcbuf.h WRAP arch/arm64/include/generated/uapi/asm/mman.h WRAP arch/arm64/include/generated/uapi/asm/msgbuf.h WRAP arch/arm64/include/generated/uapi/asm/poll.h WRAP arch/arm64/include/generated/uapi/asm/resource.h WRAP arch/arm64/include/generated/uapi/asm/sembuf.h WRAP arch/arm64/include/generated/uapi/asm/shmbuf.h WRAP arch/arm64/include/generated/uapi/asm/siginfo.h WRAP arch/arm64/include/generated/uapi/asm/socket.h WRAP arch/arm64/include/generated/uapi/asm/sockios.h WRAP arch/arm64/include/generated/uapi/asm/stat.h WRAP arch/arm64/include/generated/uapi/asm/swab.h WRAP arch/arm64/include/generated/uapi/asm/termbits.h WRAP arch/arm64/include/generated/uapi/asm/termios.h WRAP arch/arm64/include/generated/uapi/asm/types.h WRAP arch/arm64/include/generated/asm/bugs.h WRAP arch/arm64/include/generated/asm/delay.h WRAP arch/arm64/include/generated/asm/div64.h WRAP arch/arm64/include/generated/asm/dma.h WRAP arch/arm64/include/generated/asm/dma-contiguous.h WRAP arch/arm64/include/generated/asm/dma-mapping.h WRAP arch/arm64/include/generated/asm/early_ioremap.h WRAP arch/arm64/include/generated/asm/emergency-restart.h WRAP arch/arm64/include/generated/asm/hw_irq.h WRAP arch/arm64/include/generated/asm/irq_regs.h WRAP arch/arm64/include/generated/asm/kdebug.h WRAP arch/arm64/include/generated/asm/kmap_types.h WRAP arch/arm64/include/generated/asm/local.h WRAP arch/arm64/include/generated/asm/local64.h WRAP arch/arm64/include/generated/asm/mcs_spinlock.h WRAP arch/arm64/include/generated/asm/mm-arch-hooks.h WRAP arch/arm64/include/generated/asm/mmiowb.h WRAP arch/arm64/include/generated/asm/msi.h WRAP arch/arm64/include/generated/asm/qrwlock.h WRAP arch/arm64/include/generated/asm/qspinlock.h WRAP arch/arm64/include/generated/asm/serial.h WRAP arch/arm64/include/generated/asm/set_memory.h WRAP arch/arm64/include/generated/asm/switch_to.h WRAP arch/arm64/include/generated/asm/trace_clock.h WRAP arch/arm64/include/generated/asm/unaligned.h WRAP arch/arm64/include/generated/asm/user.h WRAP arch/arm64/include/generated/asm/vga.h CC scripts/mod/empty.o HOSTCC scripts/mod/mk_elfconfig MKELF scripts/mod/elfconfig.h HOSTCC scripts/mod/modpost.o CC scripts/mod/devicetable-offsets.s UPD scripts/mod/devicetable-offsets.h HOSTCC scripts/mod/file2alias.o HOSTCC scripts/mod/sumversion.o HOSTLD scripts/mod/modpost CC arch/arm64/kernel/vdso/vgettimeofday.o AS arch/arm64/kernel/vdso/note.o AS arch/arm64/kernel/vdso/sigreturn.o LD arch/arm64/kernel/vdso/vdso.so.dbg VDSOSYM include/generated/vdso-offsets.h root@qemuarm64:/lib/modules/5.4.65-yocto-standard/build# uname -a Linux qemuarm64 5.4.65-yocto-standard #1 SMP PREEMPT Mon Sep 14 15:40:15 UTC 2020 aarch64 aarch64 aarch64 GNU/Linux root@qemuarm64:/lib/modules/5.4.65-yocto-standard/build# Bruce > * Restart config... > * > * > * GCC plugins > * > GCC plugins (GCC_PLUGINS) [Y/n/?] (NEW) Y > Generate some entropy during boot and runtime > (GCC_PLUGIN_LATENT_ENTROPY) [N/y/?] (NEW) y > Randomize layout of sensitive kernel structures > (GCC_PLUGIN_RANDSTRUCT) [N/y/?] (NEW) y > Use cacheline-aware structure randomization > (GCC_PLUGIN_RANDSTRUCT_PERFORMANCE) [N/y/?] (NEW) y > * > * Memory initialization > * > Initialize kernel stack variables at function entry > > 1. no automatic initialization (weakest) (INIT_STACK_NONE) > 2. zero-init structs marked for userspace (weak) > (GCC_PLUGIN_STRUCTLEAK_USER) (NEW) > 3. zero-init structs passed by reference (strong) > (GCC_PLUGIN_STRUCTLEAK_BYREF) (NEW) > 4. zero-init anything passed by reference (very strong) > (GCC_PLUGIN_STRUCTLEAK_BYREF_ALL) (NEW) > choice[1-4?]: > > Thanks, > Yanfei > > >> > >> Cheers, > >> > >> Bruce > >> > >>> > >>> > >>> Yanfei > >>> > >>>> > >>>> Thanks, > >>>> Yanfei > >>>> > >>>>> > >>>>> Bruce > >>>>> > >>>>>> > >>>>>> Thanks， > >>>>>> Yanfei > >>>>>> > >>>>>> > >>>>>>> > >>>>>>> Bruce > >>>>>>> > >>>>>>>> > >>>>>>>> > >>>>>>>> > >>>>>>>> Regards, > >>>>>>>> Yanfei > >>>>>>>> > >>>>>>>> > >>>>>>>> ============================================================= > >>>>>>>> > >>>>>>>> $ make -C /usr/src/kernel scripts prepare > >>>>>>>> ...... > >>>>>>>> \ * GCC plugins > >>>>>>>> * > >>>>>>>> GCC plugins (GCC_PLUGINS) [Y/n/?] (NEW) y > >>>>>>>> Generate some entropy during boot and runtime > >>>>>>>> (GCC_PLUGIN_LATENT_ENTROPY) [N/y/?] (NEW) y > >>>>>>>> Randomize layout of sensitive kernel structures > >>>>>>>> (GCC_PLUGIN_RANDSTRUCT) > >>>>>>>> [N/y/?] (NEW) y > >>>>>>>> Use cacheline-aware structure randomization > >>>>>>>> (GCC_PLUGIN_RANDSTRUCT_PERFORMANCE) [N/y/?] (NEW) y > >>>>>>>> * > >>>>>>>> \ * Memory initialization > >>>>>>>> * > >>>>>>>> Initialize kernel stack variables at function entry > >>>>>>>> > 1. no automatic initialization (weakest) (INIT_STACK_NONE) > >>>>>>>> 2. zero-init structs marked for userspace (weak) > >>>>>>>> (GCC_PLUGIN_STRUCTLEAK_USER) (NEW) > >>>>>>>> 3. zero-init structs passed by reference (strong) > >>>>>>>> (GCC_PLUGIN_STRUCTLEAK_BYREF) (NEW) > >>>>>>>> 4. zero-init anything passed by reference (very strong) > >>>>>>>> (GCC_PLUGIN_STRUCTLEAK_BYREF_ALL) (NEW) > >>>>>>>> choice[1-4?]: 1 > >>>>>>>> Poison kernel stack before returning from syscalls > >>>>>>>> (GCC_PLUGIN_STACKLEAK) [N/y/?] (NEW) y > >>>>>>>> Minimum stack frame size of functions tracked by STACKLEAK > >>>>>>>> (STACKLEAK_TRACK_MIN_SIZE) [100] (NEW) > >>>>>>>> Show STACKLEAK metrics in the /proc file system (STACKLEAK_METRICS) > >>>>>>>> [N/y/?] (NEW) y > >>>>>>>> Allow runtime disabling of kernel stack erasing > >>>>>>>> (STACKLEAK_RUNTIME_DISABLE) [N/y/?] (NEW) y > >>>>>>>> Enable heap memory zeroing on allocation by default > >>>>>>>> (INIT_ON_ALLOC_DEFAULT_ON) [N/y/?] n > >>>>>>>> Enable heap memory zeroing on free by default > >>>>>>>> (INIT_ON_FREE_DEFAULT_ON) > >>>>>>>> [N/y/?] n > >>>>>>>> > >>>>>>>> HOSTCC scripts/dtc/dtc.o > >>>>>>>> ...... > >>>>>>>> == > >>>>>>>> then build the module, > >>>>>>>> == > >>>>>>>> $ make -C /usr/src/kernel M=/module_path/module_example modules > >>>>>>>> Build external kernel module ... > >>>>>>>> make: Entering directory '/lib/modules/5.4.57-yocto-standard/build' > >>>>>>>> CC [M] /module_path/module_example/hello.o > >>>>>>>> Building modules, stage 2. > >>>>>>>> MODPOST 1 modules > >>>>>>>> ERROR: "module_layout" [/module_path/module_example/hello.ko] > >>>>>>>> undefined! > >>>>>>>> make[1]: *** [scripts/Makefile.modpost:94: __modpost] Error 1 > >>>>>>>> make: *** [Makefile:1630: modules] Error 2 > >>>>>>>> make: Leaving directory '/lib/modules/5.4.57-yocto-standard/build' > >>>>>>>> == > >>>>>>> > >>>>>>> > >>>>>>> > >>>>> > >>>>> > >>>>> > >>>>> -- > >>>>> - Thou shalt not follow the NULL pointer, for chaos and madness await > >>>>> thee at its end > >>>>> - "Use the force Harry" - Gandalf, Star Trek II > >>>>> > >>>> > >>>> > >>>> > >> > >> > >> > >> -- > >> - Thou shalt not follow the NULL pointer, for chaos and madness await > >> thee at its end > >> - "Use the force Harry" - Gandalf, Star Trek II > >> > > > > > > -- - Thou shalt not follow the NULL pointer, for chaos and madness await thee at its end - "Use the force Harry" - Gandalf, Star Trek II
-=-=-=-=-=-=-=-=-=-=-=- Links: You receive all messages sent to this group. View/Reply Online (#9098): https://lists.yoctoproject.org/g/linux-yocto/message/9098 Mute This Topic: https://lists.yoctoproject.org/mt/76682606/21656 Group Owner: [email protected] Unsubscribe: https://lists.yoctoproject.org/g/linux-yocto/unsub [[email protected]] -=-=-=-=-=-=-=-=-=-=-=-
