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dynamic-089-014-110-122.89.14.pool.telefonica.de ([89.14.110.122] helo=[192.168.178.20]) by inpost2.zedat.fu-berlin.de (Exim 4.97) with esmtpsa (TLS1.3) tls TLS_AES_256_GCM_SHA384 (envelope-from ) id 1rZ7FW-00000000Q2U-32WB; Sun, 11 Feb 2024 11:39:50 +0100 Message-ID: Subject: Re: [PATCH] sh: Fix build with CONFIG_UBSAN=y From: John Paul Adrian Glaubitz To: Kees Cook Cc: Yoshinori Sato , kernel test robot , Rich Felker , Masahiro Yamada , Nicolas Schier , linux-sh@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org Date: Sun, 11 Feb 2024 11:39:49 +0100 In-Reply-To: <9fda57fc1b1ba6ad9bd6f7df3fb12674d0f4f940.camel@physik.fu-berlin.de> References: <20240130232717.work.088-kees@kernel.org> <494586ed5a0871cf7cfd005f513577952306a0bc.camel@physik.fu-berlin.de> <202402020228.BBEF7DAC@keescook> <9fda57fc1b1ba6ad9bd6f7df3fb12674d0f4f940.camel@physik.fu-berlin.de> Autocrypt: addr=glaubitz@physik.fu-berlin.de; prefer-encrypt=mutual; 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List-Unsubscribe: MIME-Version: 1.0 X-Original-Sender: glaubitz@physik.fu-berlin.de X-ZEDAT-Hint: PO Hi Kees, On Fri, 2024-02-02 at 12:06 +0100, John Paul Adrian Glaubitz wrote: > > When I use GCC 13.2 (I'm specifically on Ubuntu 23.10) and the randconf= ig > > linked from the report: > > https://download.01.org/0day-ci/archive/20240131/202401310416.s8HLiLnC-= lkp@intel.com/config > > (which is notably enabling CONFIG_UBSAN=3Dy and CONFIG_UBSAN_SHIFT=3Dy)= then I > > see at the final link stage: > >=20 > > /usr/bin/sh4-linux-gnu-ld: arch/sh/boot/compressed/misc.o: in function = `zlib_inflate_table': > > misc.c:(.text+0x650): undefined reference to `__ubsan_handle_shift_out_= of_bounds' > > ... > >=20 > > After the patch, it's solved. >=20 > OK, let me test with gcc 13.x. My build host is currently running openSUS= E Leap 15.5. I just wanted to try reproduce the problem again with the reproducer in [1]= as well as with gcc-13.2.0, but your branch devel/overflow/ubsan-only no longer exi= sts. Can you tell me where to find the patches now? Adrian > [1] https://download.01.org/0day-ci/archive/20240131/202401310416.s8HLiLn= C-lkp@intel.com/reproduce --=20 .''`. John Paul Adrian Glaubitz : :' : Debian Developer `. `' Physicist `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913