For the alternate signal stack to be cleared, CLONE_VM should and CLONE_VFORK should not be specified. Signed-off-by: Johannes Wellhöfer <johannes.wellhofer@xxxxxxxxx> --- man2/clone.2 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/man2/clone.2 b/man2/clone.2 index fecec90c8..11eb6c622 100644 --- a/man2/clone.2 +++ b/man2/clone.2 @@ -1187,7 +1187,7 @@ processes do not affect the other, as with If the .BR CLONE_VM flag is specified and the -.BR CLONE_VM +.BR CLONE_VFORK flag is not specified, then any alternate signal stack that was established by .BR sigaltstack (2) --