path: root/mm/pagewalk.c
diff options
authorKonstantin Khlebnikov <>2012-06-20 12:53:01 -0700
committerLinus Torvalds <>2012-06-20 14:39:36 -0700
commit4fe7efdbdfb1c7e7a7f31decfd831c0f31d37091 (patch)
tree5d8fdf353ba3791ef10031ade2d93aa87aa179d3 /mm/pagewalk.c
parente0897d75f0b22e8c3a7287a48548c5686ef73447 (diff)
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 <> Signed-off-by: Konstantin Khlebnikov <> Cc: Oleg Nesterov <> Cc: KAMEZAWA Hiroyuki <> Cc: Hugh Dickins <> Cc: <> Signed-off-by: Andrew Morton <> Signed-off-by: Linus Torvalds <>
Diffstat (limited to 'mm/pagewalk.c')
0 files changed, 0 insertions, 0 deletions