lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

[S390] Randomize PIEs

Browse Source 
Randomize ELF_ET_DYN_BASE, which is used when loading position
independent executables.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens
2011-01-12 09:55:31 +01:00
committed by Martin Schwidefsky
parent 3351918282
commit d2c9dfccbc
2 changed files with 14 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
arch/s390/kernel/process.c
View File

@@ -359,3 +359,14 @@ unsigned long arch_randomize_brk(struct mm_struct *mm)
return mm->brk;
return ret;
}
unsigned long randomize_et_dyn(unsigned long base)
{
unsigned long ret = PAGE_ALIGN(base + brk_rnd());
if (!(current->flags & PF_RANDOMIZE))
return base;
if (ret < base)
return base;
return ret;
}