From: Andreas Schwab Date: Thu, 16 Apr 2009 06:22:01 +0000 (+0000) Subject: powerpc/32: Don't clobber personality flags on exec X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=59e4c3a2fe9cb1681bb2cff508ff79466f7585ba;p=openwrt%2Fstaging%2Fblogic.git powerpc/32: Don't clobber personality flags on exec Now that ppc32 implements address randomization it also wants to inherit personality flags like ADDR_NO_RANDOMIZE across exec, for things like `setarch ppc -R' to work. But the ppc32 version of SET_PERSONALITY forcefully sets PER_LINUX, clearing all personality flags. So be careful about preserving the flags. Signed-off-by: Andreas Schwab Signed-off-by: Paul Mackerras --- diff --git a/arch/powerpc/include/asm/elf.h b/arch/powerpc/include/asm/elf.h index 1a856b15226e..087c22f1d368 100644 --- a/arch/powerpc/include/asm/elf.h +++ b/arch/powerpc/include/asm/elf.h @@ -258,7 +258,8 @@ do { \ # define elf_read_implies_exec(ex, exec_stk) (test_thread_flag(TIF_32BIT) ? \ (exec_stk != EXSTACK_DISABLE_X) : 0) #else -# define SET_PERSONALITY(ex) set_personality(PER_LINUX) +# define SET_PERSONALITY(ex) \ + set_personality(PER_LINUX | (current->personality & (~PER_MASK))) #endif /* __powerpc64__ */ extern int dcache_bsize;