On Tue, 19 Nov 2019 at 16:11, Randy Dunlap <rdunlap@xxxxxxxxxxxxx> wrote: > > On 11/19/19 12:46 AM, Stephen Rothwell wrote: > > Hi all, > > > > Changes since 20191118: > > > > on x86_64: > > It seems that this function can already be known by the compiler as a > builtin: > > ../kernel/kcsan/core.c:619:6: warning: conflicting types for built-in function ‘__tsan_func_exit’ [-Wbuiltin-declaration-mismatch] > void __tsan_func_exit(void) > ^~~~~~~~~~~~~~~~ > > > $ gcc --version > gcc (SUSE Linux) 7.4.1 20190905 [gcc-7-branch revision 275407] Interesting. Could you share the .config? So far I haven't been able to reproduce. I can get the warning if I manually add -fsanitize=thread to flags for kcsan/core.c (but normally disabled via KCSAN_SANITIZE := n). If possible could you also share the output of `make V=1` for kcsan/core.c? Thanks, -- Marco > -- > ~Randy > Reported-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx>
