From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 3D14715C83 for ; Mon, 5 Dec 2022 19:26:04 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B8EABC433D6; Mon, 5 Dec 2022 19:26:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1670268364; bh=HOVv4pLwTNJJu8TLRCYMflyBjWrNteM0Yu3djjxzXwY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=QL7majOjPTh5g0+HQs9LCzsuwViMTBbr10KKoJfy5XeemaHXP+fG4lvwQyoFfLhu9 jBulWcRK2RY4Hk/WWc6M/2OfBFC5KnjlICeflPvVmbGtHwrsE2Vmzq+lJ7spOMiJFj r6ay121rl6KPEZ3Ao2QfrMGgm4UIroWQT047MTCs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, kernel test robot , Jisheng Zhang , Palmer Dabbelt Subject: [PATCH 6.0 075/124] riscv: vdso: fix section overlapping under some conditions Date: Mon, 5 Dec 2022 20:09:41 +0100 Message-Id: <20221205190810.553127111@linuxfoundation.org> X-Mailer: git-send-email 2.38.1 In-Reply-To: <20221205190808.422385173@linuxfoundation.org> References: <20221205190808.422385173@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Jisheng Zhang commit 74f6bb55c834da6d4bac24f44868202743189b2b upstream. lkp reported a build error, I tried the config and can reproduce build error as below: VDSOLD arch/riscv/kernel/vdso/vdso.so.dbg ld.lld: error: section .note file range overlaps with .text >>> .note range is [0x7C8, 0x803] >>> .text range is [0x800, 0x1993] ld.lld: error: section .text file range overlaps with .dynamic >>> .text range is [0x800, 0x1993] >>> .dynamic range is [0x808, 0x937] ld.lld: error: section .note virtual address range overlaps with .text >>> .note range is [0x7C8, 0x803] >>> .text range is [0x800, 0x1993] Fix it by setting DISABLE_BRANCH_PROFILING which will disable branch tracing for vdso, thus avoid useless _ftrace_annotated_branch section and _ftrace_branch section. Although we can also fix it by removing the hardcoded .text begin address, but I think that's another story and should be put into another patch. Link: https://lore.kernel.org/lkml/202210122123.Cc4FPShJ-lkp@intel.com/#r Reported-by: kernel test robot Signed-off-by: Jisheng Zhang Link: https://lore.kernel.org/r/20221102170254.1925-1-jszhang@kernel.org Fixes: ad5d1122b82f ("riscv: use vDSO common flow to reduce the latency of the time-related functions") Cc: stable@vger.kernel.org Signed-off-by: Palmer Dabbelt Signed-off-by: Greg Kroah-Hartman --- arch/riscv/kernel/vdso/Makefile | 1 + 1 file changed, 1 insertion(+) --- a/arch/riscv/kernel/vdso/Makefile +++ b/arch/riscv/kernel/vdso/Makefile @@ -17,6 +17,7 @@ vdso-syms += flush_icache obj-vdso = $(patsubst %, %.o, $(vdso-syms)) note.o ccflags-y := -fno-stack-protector +ccflags-y += -DDISABLE_BRANCH_PROFILING ifneq ($(c-gettimeofday-y),) CFLAGS_vgettimeofday.o += -fPIC -include $(c-gettimeofday-y)