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a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1744093768; bh=TZRXQXyAJjfumstgWlPjlJzn7XUS2S2DJGD2Io8pZrM=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=D3NYKgdALL38S3fbgMTg/PelGxLq8NIML9a3wOQ+5DPzXYfIRaIfCIpZF8yAimzu9 8Hd2CH1ve0x+mFotzF2ozNBDWJMAivtJKYrVJoDIUV6wSIfJ7j8EsGAFn+ILEMqpvb kIoeF1cyMdUBvYrQHVHW8dwsoyNyIA5FskcTZSjTTo6oIEBz9ulJUQD1asV34sdrxT gOWXfs65XKoeec7rSdF/W1CZElIrGxZy+A1EoDe+SSvElPcdEubi+YD182GeKkHCff w+GeY8ZOGkYuut/1jLy6zzipVy9ZalCYIcqsZqz1BndnxjDiKkk2r90RQRXmtnL436 ULFhrJH/HdFdg== Date: Mon, 7 Apr 2025 23:29:26 -0700 From: Josh Poimboeuf To: Tiezhu Yang Cc: Philip Li , kernel test robot , Guenter Roeck , oe-kbuild-all@lists.linux.dev, Andrew Morton , Linux Memory Management List , Alessandro Carminati , Peter Zijlstra , linux-kernel@vger.kernel.org, loongarch@lists.linux.dev Subject: Re: [linux-next:master 12681/13861] drivers/i2c/i2c-core-base.o: warning: objtool: __i2c_transfer+0x120: stack state mismatch: reg1[24]=-1+0 reg2[24]=-2-24 Message-ID: References: <202504011011.jyZ6NtXx-lkp@intel.com> <348cdb14-f8cf-1e7b-44b2-79dc4dda4e35@loongson.cn> <0cbe7ab8-bd87-b5f7-0513-07c82a7e76c9@loongson.cn> <5f830e7a-7cfa-3c62-ba3f-f93808e95821@loongson.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: <5f830e7a-7cfa-3c62-ba3f-f93808e95821@loongson.cn> X-Rspamd-Queue-Id: D4DA1C0002 X-Stat-Signature: cuhowg3wwh5fom3yzsku9ey76okpfhzc X-Rspam-User: X-Rspamd-Server: rspam06 X-HE-Tag: 1744093769-383740 X-HE-Meta: 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 f2QE/1z0 XhhTBcrRN+jCt5ZzSTeeOrqwjlddmZJBnTSW9XhJK7UWwQej3LExZFBW3/fq4r0/rQVz0JvvXgZgnnZimbfA+m9tgdOK6klVzZuE/mT8YzV5WI9qgmDMZS0OtrDwrlJRD2FWx+OHI2AQJ3D/16sE7RbgcBQDSE90TebRwfs7EZsZ9omLxRzyBLRqO9IeJ/s1MiZoH1s/oX44TlJE5BRQ+gM2E3gXoG4g8SoVEEj9ntk6iKFuhLjCesnlZi4AlpYhQ+MWvwEbUcfSywwpTwwT5sguoaxnFVQQf/XFss+GW6MRdB2c= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Tue, Apr 08, 2025 at 10:45:51AM +0800, Tiezhu Yang wrote: > So this is a run-time bug rather than a compile-time warning, it should > put the option "-fno-shrink-wrap" outside CONFIG_OBJTOOL in > arch/loongarch/Makefile as a workaround, like this: If loongarch folks agree it's a compiler bug, it should be reported to GCC, so the issue is better understood (and can get fixed). Without understanding the root cause, we don't know if -fno-shrink-wrap fixes it, or just makes this particular occurrence go away. -- Josh