The patch titled
ptrace-wait_task_zombie-do-not-account-traced-sub-threads-fix-2
has been added to the -mm tree. Its filename is
ptrace-wait_task_zombie-do-not-account-traced-sub-threads-fix-2.patch
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------------------------------------------------------
Subject: ptrace-wait_task_zombie-do-not-account-traced-sub-threads-fix-2
From: Oleg Nesterov <oleg@xxxxxxxxxx>
Signed-off-by: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Peter Zijlstra <a.p.zijlstra@xxxxxxxxx>
Cc: Roland McGrath <roland@xxxxxxxxxx>
Cc: Stanislaw Gruszka <sgruszka@xxxxxxxxxx>
Cc: Vitaly Mayatskikh <vmayatsk@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/exit.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff -puN kernel/exit.c~ptrace-wait_task_zombie-do-not-account-traced-sub-threads-fix-2 kernel/exit.c
--- a/kernel/exit.c~ptrace-wait_task_zombie-do-not-account-traced-sub-threads-fix-2
+++ a/kernel/exit.c
@@ -1199,7 +1199,10 @@ static int wait_task_zombie(struct wait_
}
traced = ptrace_reparented(p);
-
+ /*
+ * It can be ptraced but not reparented, check
+ * !task_detached() to filter out sub-threads.
+ */
if (likely(!traced) && likely(!task_detached(p))) {
struct signal_struct *psig;
struct signal_struct *sig;
_
Patches currently in -mm which might be from oleg@xxxxxxxxxx are
origin.patch
allow_signal-kill-the-bogus-mm-check-add-a-note-about-clone_sighand.patch
ptrace-remove-pt_dtrace-from-arch-h8300.patch
ptrace-remove-pt_dtrace-from-avr32-mn10300-parisc-s390-sh-xtensa.patch
ptrace-remove-pt_dtrace-from-m68k-m68knommu.patch
ptrace-remove-pt_dtrace-from-arch-m32r.patch
ptrace-mm_need_new_owner-use-real_parent-to-search-in-the-siblings.patch
ptrace-tracehook_unsafe_exec-remove-the-stale-comment.patch
ptrace-do-not-use-task-ptrace-directly-in-core-kernel.patch
ptrace-ptrace_attach-check-pf_kthread-exit_state-instead-of-mm.patch
ptrace-cleanup-check-set-of-pt_ptraced-during-attach.patch
ptrace-do-not-use-task_lock-for-attach.patch
ptrace_get_task_struct-s-tasklist-rcu-make-it-static.patch
ptrace-wait_task_zombie-s-parent-real_parent.patch
ptrace-do_notify_parent_cldstop-fix-the-wrong-nsproxy-usage.patch
ptrace-dont-take-tasklist-to-get-set-last_siginfo.patch
wait_task_zombie-do-not-use-thread_group_cputime.patch
copy_process-remove-the-unneeded-clear_tsk_thread_flagtif_sigpending.patch
elf_core_dump-use-rcu_read_lock-to-access-real_parent.patch
shift-ptrace-implies-wuntraced-from-ptrace_do_wait-to-wait_task_stopped.patch
introduce-struct-wait_opts-to-simplify-do_wait-pathes.patch
do_wait-simplify-retval-tsk_result-notask_error-mess.patch
do_wait-kill-the-old-bug_on-use-while_each_thread.patch
do_wait-fix-the-theoretical-race-with-stop-trace-cont.patch
mm-exitc-reorder-wait_opts-to-remove-padding-on-64-bit-builds.patch
kthreads-simplify-the-startup-synchronization.patch
kthreads-rework-kthread_stop.patch
kthreads-simplify-migration_thread-exit-path.patch
pids-clean-up-find_task_by_pid-variants.patch
linux-next.patch
rework-fix-is_single_threaded.patch
getrusage-fill-ru_maxrss-value.patch
getrusage-fill-ru_maxrss-value-update.patch
ptrace-wait_task_zombie-do-not-account-traced-sub-threads.patch
ptrace-wait_task_zombie-do-not-account-traced-sub-threads-fix-2.patch
ptrace-wait_task_zombie-do-not-account-traced-sub-threads-fix.patch
signals-tracehook_notify_jctl-change.patch
utrace-core.patch
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