tree 69f434d181767ed9661bf96669abbdcfcdfcdf95
parent e66485d747505e9d960b864fc6c37f8b2afafaf0
author Jeremy Fitzhardinge <jeremy@goop.org> 1190746200 -0700
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1190824034 -0700

xen: execve's error paths don't pin the mm before unpinning

execve's error paths don't activate (and therefore pin) the mm before
calling exit_mmap to free it up, so don't try to unpin unless it is
actually pinned.  This prevents a BUG_ON from triggering.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: Christian Ostheimer <osth@freesurf.ch>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>