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clone(2): fix check for attempts to create new process #1733

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Jun 3, 2022
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clone(2): fix check for attempts to create new process #1733

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4 changes: 2 additions & 2 deletions src/unix/thread.c
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Original file line number Diff line number Diff line change
Expand Up @@ -60,8 +60,8 @@ sysreturn clone(unsigned long flags, void *child_stack, int *ptid, unsigned long
thread_log(current, "clone: flags %lx, child_stack %p, ptid %p, ctid %p, newtls %lx",
flags, child_stack, ptid, ctid, newtls);

if (!child_stack) { /* this is actually a fork() */
thread_log(current, "attempted to fork by passing null child stack, aborting.");
if (!(flags & CLONE_THREAD)) {
thread_log(current, "attempted to create new process, aborting.");
return set_syscall_error(current, ENOSYS);
}

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