The patch titled
Subject: prctl-add-pr_setget_child_subreaper-to-allow-simple-process-supervision-fix-fix
has been added to the -mm tree. Its filename is
prctl-add-pr_setget_child_subreaper-to-allow-simple-process-supervision-fix-fix.patch
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From: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
Subject: prctl-add-pr_setget_child_subreaper-to-allow-simple-process-supervision-fix-fix
add lengthy code comment from Oleg
Cc: Kay Sievers <kay.sievers@xxxxxxxx>
Cc: Lennart Poettering <lennart@xxxxxxxxxxxxxx>
Cc: Oleg Nesterov <oleg@xxxxxxxxxx>
Cc: Valdis Kletnieks <Valdis.Kletnieks@xxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
kernel/exit.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff -puN kernel/exit.c~prctl-add-pr_setget_child_subreaper-to-allow-simple-process-supervision-fix-fix kernel/exit.c
--- a/kernel/exit.c~prctl-add-pr_setget_child_subreaper-to-allow-simple-process-supervision-fix-fix
+++ a/kernel/exit.c
@@ -724,7 +724,13 @@ static struct task_struct *find_new_reap
} else if (father->signal->has_child_subreaper) {
struct task_struct *reaper;
- /* find the first ancestor marked as child_subreaper */
+ /*
+ * Find the first ancestor marked as child_subreaper.
+ * Note that the code below checks same_thread_group(reaper,
+ * pid_ns->child_reaper). This is what we need to DTRT in a
+ * PID namespace. However we still need the check above, see
+ * http://marc.info/?l=linux-kernel&m=131385460420380
+ */
for (reaper = father->real_parent;
reaper != &init_task;
reaper = reaper->real_parent) {
_
Subject: Subject: prctl-add-pr_setget_child_subreaper-to-allow-simple-process-supervision-fix-fix
Patches currently in -mm which might be from akpm@xxxxxxxxxxxxxxxxxxxx are
origin.patch
mm-fix-warnings-regarding-enum-migrate_mode.patch
linux-next.patch
i-need-old-gcc.patch
arch-alpha-kernel-systblss-remove-debug-check.patch
arch-x86-platform-iris-irisc-register-a-platform-device-and-a-platform-driver.patch
x86-olpc-xo15-sci-enable-lid-close-wakeup-control-through-sysfs.patch
drivers-platform-x86-sony-laptopc-fix-scancodes.patch
drivers-scsi-mpt2sas-mpt2sas_scsihc-spell-primitive-correctly.patch
drivers-scsi-megaraidc-fix-sparse-warnings-checkpatch-fixes.patch
drivers-usb-misc-emi26c-emi62c-fix-warnings.patch
mm.patch
mm-add-extra-free-kbytes-tunable-update-checkpatch-fixes.patch
audit-treat-s_id-as-an-untrusted-string.patch
hpet-factor-timer-allocate-from-open.patch
drivers-idle-intel_idlec-remove-redundant-local_irq_disable-call.patch
prctl-add-pr_setget_child_subreaper-to-allow-simple-process-supervision-fix.patch
prctl-add-pr_setget_child_subreaper-to-allow-simple-process-supervision-fix-fix.patch
brlocks-lglocks-cleanups-checkpatch-fixes.patch
notify_change-check-that-i_mutex-is-held.patch
journal_add_journal_head-debug.patch
mutex-subsystem-synchro-test-module-fix.patch
slab-leaks3-default-y.patch
put_bh-debug.patch
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