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[sanitizer_common] Don't use syscall(SYS_clone) on Linux/sparc64 #100534

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Merged
merged 1 commit into from
Jul 30, 2024
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[sanitizer_common] Don't use syscall(SYS_clone) on Linux/sparc64 #100534

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6 changes: 6 additions & 0 deletions compiler-rt/lib/sanitizer_common/sanitizer_linux.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -826,10 +826,16 @@ uptr internal_sigaltstack(const void *ss, void *oss) {
return internal_syscall(SYSCALL(sigaltstack), (uptr)ss, (uptr)oss);
}

extern "C" pid_t __fork(void);

int internal_fork() {
# if SANITIZER_LINUX
# if SANITIZER_S390
return internal_syscall(SYSCALL(clone), 0, SIGCHLD);
# elif SANITIZER_SPARC
// The clone syscall interface on SPARC differs massively from the rest,
// so fall back to __fork.
return __fork();
# else
return internal_syscall(SYSCALL(clone), SIGCHLD, 0);
# endif
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