803bf5ec25 ("fs/exec.c: restrict initial
stack space expansion to rlimit") attempts to limit the initial stack to
20*PAGE_SIZE. Unfortunately, in attempting ensure the stack is not
reduced in size, we ended up not changing the stack at all.
This size reduction check is not necessary as the expand_stack call does
this already.
This caused a regression in UML resulting in most guest processes being
killed.
Signed-off-by: Michael Neuling <[email protected]>
Reviewed-by: KOSAKI Motohiro <[email protected]>
Acked-by: WANG Cong <[email protected]>
Cc: Anton Blanchard <[email protected]>
Cc: Oleg Nesterov <[email protected]>
Cc: James Morris <[email protected]>
Cc: Serge Hallyn <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Jouni Malinen <[email protected]>
Cc: <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Michael Neuling
a17e18790a