From: chenjie <chenjie6@xxxxxxxxxx>
when oom happened we can see:
Out of memory: Kill process 9134 (init) score 3 or sacrifice child
Killed process 9134 (init) total-vm:1868kB, anon-rss:84kB, file-rss:572kB
Kill process 1 (init) sharing same memory
...
Kernel panic - not syncing: Attempted to kill init! exitcode=0x00000009
That's because:
the busybox init will vfork a process,oom_kill_process found
the init not the children,their mm is the same when vfork.
Cc: <stable@xxxxxxxxxxxxxxx>
Signed-off-by: Chen Jie <chenjie6@xxxxxxxxxx>
---
mm/oom_kill.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/mm/oom_kill.c b/mm/oom_kill.c
index d13a339..a0ddebd 100644
--- a/mm/oom_kill.c
+++ b/mm/oom_kill.c
@@ -608,6 +608,8 @@ void oom_kill_process(struct oom_control *oc, struct task_struct *p,
continue;
if (unlikely(p->flags & PF_KTHREAD))
continue;
+ if (!is_global_init(p))
+ continue;
if (p->signal->oom_score_adj == OOM_SCORE_ADJ_MIN)
continue;
--
1.8.0
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