From: Nick Desaulniers <ndesaulniers@google.com> To: Nathan Chancellor <nathan@kernel.org>, Naresh Kamboju <naresh.kamboju@linaro.org> Cc: open list <linux-kernel@vger.kernel.org>, Linux ARM <linux-arm-kernel@lists.infradead.org>, Arnd Bergmann <arnd@arndb.de>, "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>, Masami Hiramatsu <mhiramat@kernel.org>, regressions@lists.linux.dev, lkft-triage@lists.linaro.org, llvm@lists.linux.dev Subject: Re: arch/arm/probes/kprobes/core.c:409:30: error: .fnstart must precede .save or .vsave directives Date: Mon, 26 Sep 2022 10:42:45 -0700 [thread overview] Message-ID: <CAKwvOdkYr-Nv6PowyJ10DuP-uFLcvH1oGWSeQH3Dz_JM8vwp2w@mail.gmail.com> (raw) In-Reply-To: <YzHJRH9hO1lfjSPp@dev-arch.thelio-3990X> On Mon, Sep 26, 2022 at 8:46 AM Nathan Chancellor <nathan@kernel.org> wrote: > > + our mailing list, I should have added it with that message. > > On Mon, Sep 26, 2022 at 08:44:05AM -0700, Nathan Chancellor wrote: > > Hi Naresh, > > > > On Mon, Sep 26, 2022 at 06:57:00PM +0530, Naresh Kamboju wrote: > > > Following build warnings / errors noticed on arm with clang-13 / 14 > > > on Linux next-20220923. > > > > > > Reported-by: Linux Kernel Functional Testing <lkft@linaro.org> > > > > > > Regressions found on arm: > > > > > > - build-clang-13-bcm2835_defconfig > > > - build-clang-nightly-imx_v6_v7_defconfig > > > - build-clang-nightly-orion5x_defconfig > > > - build-clang-13-keystone_defconfig > > > - build-clang-13-omap2plus_defconfig > > > - build-clang-14-imx_v6_v7_defconfig > > > - build-clang-nightly-omap2plus_defconfig > > > - build-clang-nightly-multi_v5_defconfig > > > - build-clang-nightly-bcm2835_defconfig > > > - build-clang-13-imx_v6_v7_defconfig > > > - build-clang-13-imx_v4_v5_defconfig > > > - build-clang-14-imx_v4_v5_defconfig > > > - build-clang-13-orion5x_defconfig > > > - build-clang-14-multi_v5_defconfig-65236a87 > > > - build-clang-14-lkftconfig > > > - build-clang-nightly-imx_v4_v5_defconfig > > > - build-clang-13-multi_v5_defconfig > > > - build-clang-13-lkftconfig > > > - build-clang-nightly-keystone_defconfig > > > - build-clang-14-multi_v5_defconfig > > > - build-clang-14-orion5x_defconfig > > > - build-clang-14-omap2plus_defconfig > > > - build-clang-nightly-multi_v5_defconfig-65236a87 > > > - build-clang-14-bcm2835_defconfig > > > - build-clang-14-keystone_defconfig > > > - build-clang-nightly-lkftconfig > > > > > > arch/arm/probes/kprobes/core.c:409:30: error: .fnstart must precede > > > .save or .vsave directives > > > "stmdb sp, {sp, lr, pc} \n\t" > > > ^ > > > <inline asm>:3:2: note: instantiated into assembly here > > > .save {sp, lr, pc} > > > ^ > > > /builds/linux/arch/arm/probes/kprobes/core.c:412:29: error: .fnstart > > > must precede .pad directive > > > "stmdb sp!, {r0 - r11} \n\t" > > > ^ > > > <inline asm>:6:2: note: instantiated into assembly here > > > .pad #52 > > > ^ > > > 2 errors generated. > > > make[5]: *** [/builds/linux/scripts/Makefile.build:250: > > > arch/arm/probes/kprobes/core.o] Error 1 > > > > > > build log: > > > https://builds.tuxbuild.com/2FAyD1qcTlzjIYE7mjrugjCsxu1/ > > > > Thank you for the testing and report! I brought this up on GitHub on > > Friday as I noticed this as well: > > > > https://github.com/ClangBuiltLinux/linux/issues/1718 Thanks for the reports. I'll take a look at filing additional bug reports against clang, then moving the definition of __kretprobe_trampoline to out of line assembler. > > > > It sounds like we can avoid this by rewriting __kretprobe_trampoline() > > in out of line assembly but I have not had a chance to sit down and try > > it. > > > > Cheers, > > Nathan > -- Thanks, ~Nick Desaulniers
WARNING: multiple messages have this Message-ID (diff)
From: Nick Desaulniers <ndesaulniers@google.com> To: Nathan Chancellor <nathan@kernel.org>, Naresh Kamboju <naresh.kamboju@linaro.org> Cc: open list <linux-kernel@vger.kernel.org>, Linux ARM <linux-arm-kernel@lists.infradead.org>, Arnd Bergmann <arnd@arndb.de>, "Russell King (Oracle)" <rmk+kernel@armlinux.org.uk>, Masami Hiramatsu <mhiramat@kernel.org>, regressions@lists.linux.dev, lkft-triage@lists.linaro.org, llvm@lists.linux.dev Subject: Re: arch/arm/probes/kprobes/core.c:409:30: error: .fnstart must precede .save or .vsave directives Date: Mon, 26 Sep 2022 10:42:45 -0700 [thread overview] Message-ID: <CAKwvOdkYr-Nv6PowyJ10DuP-uFLcvH1oGWSeQH3Dz_JM8vwp2w@mail.gmail.com> (raw) In-Reply-To: <YzHJRH9hO1lfjSPp@dev-arch.thelio-3990X> On Mon, Sep 26, 2022 at 8:46 AM Nathan Chancellor <nathan@kernel.org> wrote: > > + our mailing list, I should have added it with that message. > > On Mon, Sep 26, 2022 at 08:44:05AM -0700, Nathan Chancellor wrote: > > Hi Naresh, > > > > On Mon, Sep 26, 2022 at 06:57:00PM +0530, Naresh Kamboju wrote: > > > Following build warnings / errors noticed on arm with clang-13 / 14 > > > on Linux next-20220923. > > > > > > Reported-by: Linux Kernel Functional Testing <lkft@linaro.org> > > > > > > Regressions found on arm: > > > > > > - build-clang-13-bcm2835_defconfig > > > - build-clang-nightly-imx_v6_v7_defconfig > > > - build-clang-nightly-orion5x_defconfig > > > - build-clang-13-keystone_defconfig > > > - build-clang-13-omap2plus_defconfig > > > - build-clang-14-imx_v6_v7_defconfig > > > - build-clang-nightly-omap2plus_defconfig > > > - build-clang-nightly-multi_v5_defconfig > > > - build-clang-nightly-bcm2835_defconfig > > > - build-clang-13-imx_v6_v7_defconfig > > > - build-clang-13-imx_v4_v5_defconfig > > > - build-clang-14-imx_v4_v5_defconfig > > > - build-clang-13-orion5x_defconfig > > > - build-clang-14-multi_v5_defconfig-65236a87 > > > - build-clang-14-lkftconfig > > > - build-clang-nightly-imx_v4_v5_defconfig > > > - build-clang-13-multi_v5_defconfig > > > - build-clang-13-lkftconfig > > > - build-clang-nightly-keystone_defconfig > > > - build-clang-14-multi_v5_defconfig > > > - build-clang-14-orion5x_defconfig > > > - build-clang-14-omap2plus_defconfig > > > - build-clang-nightly-multi_v5_defconfig-65236a87 > > > - build-clang-14-bcm2835_defconfig > > > - build-clang-14-keystone_defconfig > > > - build-clang-nightly-lkftconfig > > > > > > arch/arm/probes/kprobes/core.c:409:30: error: .fnstart must precede > > > .save or .vsave directives > > > "stmdb sp, {sp, lr, pc} \n\t" > > > ^ > > > <inline asm>:3:2: note: instantiated into assembly here > > > .save {sp, lr, pc} > > > ^ > > > /builds/linux/arch/arm/probes/kprobes/core.c:412:29: error: .fnstart > > > must precede .pad directive > > > "stmdb sp!, {r0 - r11} \n\t" > > > ^ > > > <inline asm>:6:2: note: instantiated into assembly here > > > .pad #52 > > > ^ > > > 2 errors generated. > > > make[5]: *** [/builds/linux/scripts/Makefile.build:250: > > > arch/arm/probes/kprobes/core.o] Error 1 > > > > > > build log: > > > https://builds.tuxbuild.com/2FAyD1qcTlzjIYE7mjrugjCsxu1/ > > > > Thank you for the testing and report! I brought this up on GitHub on > > Friday as I noticed this as well: > > > > https://github.com/ClangBuiltLinux/linux/issues/1718 Thanks for the reports. I'll take a look at filing additional bug reports against clang, then moving the definition of __kretprobe_trampoline to out of line assembler. > > > > It sounds like we can avoid this by rewriting __kretprobe_trampoline() > > in out of line assembly but I have not had a chance to sit down and try > > it. > > > > Cheers, > > Nathan > -- Thanks, ~Nick Desaulniers _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
next prev parent reply other threads:[~2022-09-26 17:42 UTC|newest] Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top 2022-09-26 13:27 arch/arm/probes/kprobes/core.c:409:30: error: .fnstart must precede .save or .vsave directives Naresh Kamboju 2022-09-26 13:27 ` Naresh Kamboju 2022-09-26 15:44 ` Nathan Chancellor 2022-09-26 15:44 ` Nathan Chancellor 2022-09-26 15:46 ` Nathan Chancellor 2022-09-26 15:46 ` Nathan Chancellor 2022-09-26 17:42 ` Nick Desaulniers [this message] 2022-09-26 17:42 ` Nick Desaulniers 2022-09-26 18:02 ` Russell King (Oracle) 2022-09-26 18:02 ` Russell King (Oracle) 2022-09-26 18:17 ` Nick Desaulniers 2022-09-26 18:17 ` Nick Desaulniers 2022-09-26 18:37 ` [PATCH] ARM: kprobes: move __kretprobe_trampoline to out of line assembler Nick Desaulniers 2022-09-26 18:37 ` Nick Desaulniers 2022-09-26 18:42 ` Nick Desaulniers 2022-09-26 18:42 ` Nick Desaulniers 2022-09-27 22:28 ` [PATCH v2] " Nick Desaulniers 2022-09-27 22:28 ` Nick Desaulniers 2022-09-27 22:35 ` Russell King (Oracle) 2022-09-27 22:35 ` Russell King (Oracle) 2022-09-28 16:39 ` Nick Desaulniers 2022-09-28 16:39 ` Nick Desaulniers 2022-09-29 8:53 ` [PATCH] " kernel test robot 2022-09-30 21:15 ` [PATCH v3] " Nick Desaulniers 2022-09-30 21:15 ` Nick Desaulniers 2022-10-06 20:35 ` Nick Desaulniers 2022-10-06 20:35 ` Nick Desaulniers 2022-10-08 3:10 ` Chen Zhongjin 2022-10-08 3:10 ` Chen Zhongjin 2022-10-04 0:48 ` [PATCH] " kernel test robot 2022-10-05 22:59 ` Ard Biesheuvel 2022-10-05 22:59 ` Ard Biesheuvel 2022-09-26 16:11 ` arch/arm/probes/kprobes/core.c:409:30: error: .fnstart must precede .save or .vsave directives Russell King (Oracle) 2022-09-26 16:11 ` Russell King (Oracle)
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