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    • Jiri Kosina's avatar
      cross-arch: don't corrupt personality flags upon exec() · 16f3e95b
      Jiri Kosina authored
      Historically, the top three bytes of personality have been used for
      things such as ADDR_NO_RANDOMIZE, which made sense only for specific
      architectures.
      
      We now however have a flag there that is general no matter the
      architecture (UNAME26); generally we have to be careful to preserve the
      personality flags across exec().
      
      This patch tries to fix all architectures that forcefully overwrite
      personality flags during exec() (ppc32 and s390 have been fixed recently
      by commits f9783ec8 ("[S390] Do not clobber personality flags on
      exec") and 59e4c3a2
      
       ("powerpc/32: Don't clobber personality flags on
      exec") in a similar way already).
      Signed-off-by: default avatarJiri Kosina <jkosina@suse.cz>
      Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
      Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
      Cc: Mike Frysinger <vapier@gentoo.org>
      Cc: Mark Salter <msalter@redhat.com>
      Cc: Mikael Starvik <starvik@axis.com>
      Cc: Jesper Nilsson <jesper.nilsson@axis.com>
      Cc: David Howells <dhowells@redhat.com>
      Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
      Cc: Richard Kuo <rkuo@codeaurora.org>
      Cc: Hirokazu Takata <takata@linux-m32r.org>
      Cc: Geert Uytterhoeven <geert@linux-m68k.org>
      Cc: Michal Simek <monstr@monstr.eu>
      Cc: Koichi Yasutake <yasutake.koichi@jp.panasonic.com>
      Cc: Jonas Bonn <jonas@southpole.se>
      Cc: Chen Liqin <liqin.chen@sunplusct.com>
      Cc: Lennox Wu <lennox.wu@gmail.com>
      Cc: Paul Mundt <lethal@linux-sh.org>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Chris Zankel <chris@zankel.net>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      16f3e95b
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