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authorKonstantin Khlebnikov <khlebnikov@openvz.org>2012-06-20 12:53:01 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2012-06-20 14:39:36 -0700
commit4fe7efdbdfb1c7e7a7f31decfd831c0f31d37091 (patch)
tree5d8fdf353ba3791ef10031ade2d93aa87aa179d3 /mm/percpu-vm.c
parente0897d75f0b22e8c3a7287a48548c5686ef73447 (diff)
downloadlinux-4fe7efdbdfb1c7e7a7f31decfd831c0f31d37091.tar.bz2
mm: correctly synchronize rss-counters at exit/exec
do_exit() and exec_mmap() call sync_mm_rss() before mm_release() does put_user(clear_child_tid) which can update task->rss_stat and thus make mm->rss_stat inconsistent. This triggers the "BUG:" printk in check_mm(). Let's fix this bug in the safest way, and optimize/cleanup this later. Reported-by: Markus Trippelsdorf <markus@trippelsdorf.de> Signed-off-by: Konstantin Khlebnikov <khlebnikov@openvz.org> Cc: Oleg Nesterov <oleg@redhat.com> Cc: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Hugh Dickins <hughd@google.com> Cc: <stable@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/percpu-vm.c')
0 files changed, 0 insertions, 0 deletions