KAMEZAWA Hiroyuki wrote:
(2012/04/10 5:03), Konstantin Khlebnikov wrote:
On task's exit do_exit() calls sync_mm_rss() but this is not enough,
there can be page-faults after this point, for example exit_mm() ->
mm_release() -> put_user() (for processing tsk->clear_child_tid).
Thus there may be some rss-counters delta in current->rss_stat.
I had to mention it in comment:
This should fix warnings:
BUG: Bad rss-counter state mm:ffff88020813c380 idx:1 val:-1
BUG: Bad rss-counter state mm:ffff88020813c380 idx:2 val:1
Signed-off-by: Konstantin Khlebnikov<khlebnikov@xxxxxxxxxx>
Reported-by: Markus Trippelsdorf<markus@xxxxxxxxxxxxxxx>
Cc: Hugh Dickins<hughd@xxxxxxxxxx>
Cc: KAMEZAWA Hiroyuki<kamezawa.hiroyu@xxxxxxxxxxxxxx>
Reviewed-by: KAMEZAWA Hiroyuki<kamezawa.hiroyu@xxxxxxxxxxxxxx>
Does this fix recent issue reported ?
I hope so.
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