Messages in this thread | | | Date | Mon, 12 Feb 2024 10:26:03 -0800 | From | Kees Cook <> | Subject | Re: [PATCH] sh: Fix build with CONFIG_UBSAN=y |
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On Sun, Feb 11, 2024 at 11:39:49AM +0100, John Paul Adrian Glaubitz wrote: > 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 randconfig > > > linked from the report: > > > https://download.01.org/0day-ci/archive/20240131/202401310416.s8HLiLnC-lkp@intel.com/config > > > (which is notably enabling CONFIG_UBSAN=y and CONFIG_UBSAN_SHIFT=y) then I > > > see at the final link stage: > > > > > > /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' > > > ... > > > > > > After the patch, it's solved. > > > > OK, let me test with gcc 13.x. My build host is currently running openSUSE 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 exists. > > Can you tell me where to find the patches now?
Sure, they're in -next, but for an -rc2 based tree, see: https://git.kernel.org/pub/scm/linux/kernel/git/kees/linux.git/log/?h=for-next/kspp
-- Kees Cook
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