lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Tue, 16 Mar 2021 13:33:53 -0700 From: Sami Tolvanen <samitolvanen@...gle.com> To: Kees Cook <keescook@...omium.org> Cc: Nathan Chancellor <nathan@...nel.org>, Nick Desaulniers <ndesaulniers@...gle.com>, Masahiro Yamada <masahiroy@...nel.org>, Will Deacon <will@...nel.org>, Jessica Yu <jeyu@...nel.org>, Arnd Bergmann <arnd@...db.de>, Tejun Heo <tj@...nel.org>, bpf@...r.kernel.org, linux-hardening@...r.kernel.org, linux-arch <linux-arch@...r.kernel.org>, linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>, linux-kbuild <linux-kbuild@...r.kernel.org>, PCI <linux-pci@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH 07/17] kallsyms: cfi: strip hashes from static functions On Thu, Mar 11, 2021 at 6:45 PM Kees Cook <keescook@...omium.org> wrote: > > On Thu, Mar 11, 2021 at 04:49:09PM -0800, Sami Tolvanen wrote: > > With CONFIG_CFI_CLANG and ThinLTO, Clang appends a hash to the names > > of all static functions not marked __used. This can break userspace > > tools that don't expect the function name to change, so strip out the > > hash from the output. > > > > Suggested-by: Jack Pham <jackp@...eaurora.org> > > Signed-off-by: Sami Tolvanen <samitolvanen@...gle.com> > > (Is it possible we could end up with symbol name collisions? ... though > I guess we would have had collisions before?) Yes, these are static functions, so name collisions have always been possible. Sami
Powered by blists - more mailing lists