Commit 567b7223 authored Apr 04, 2019 by Alexandre Ghiti Committed by Heiko Carstens Jun 04, 2019

s390/mm: mmap base does not depend on ADDR_NO_RANDOMIZE personality



randomize_stack_top() checks for current task flag PF_RANDOMIZE in order
to use stack randomization and PF_RANDOMIZE is set when
ADDR_NO_RANDOMIZE is unset, so no need to check for ADDR_NO_RANDOMIZE
in stack_maxrandom_size.

[heiko.carstens@de.ibm.com]: See also commit 01578e36 ("x86/elf:
Remove the unnecessary ADDR_NO_RANDOMIZE checks")

Signed-off-by: Alexandre Ghiti <alex@ghiti.fr>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>

parent 8b96d971

arch/s390/mm/mmap.c

+0 −2

Original line number	Diff line number	Diff line
		@@ -24,8 +24,6 @@ static unsigned long stack_maxrandom_size(void)
		{
		if (!(current->flags & PF_RANDOMIZE))
		return 0;
		if (current->personality & ADDR_NO_RANDOMIZE)
		return 0;
		return STACK_RND_MASK << PAGE_SHIFT;
		}

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