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Date: Sun, 29 Nov 2015 19:08:02 -0800 From: Andrew Morton <akpm@...ux-foundation.org> To: <chenjie6@...wei.com> Cc: <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>, <David.Woodhouse@...el.com>, <zhihui.gao@...wei.com>, <lizefan@...wei.com>, <stable@...r.kernel.org> Subject: Re: [PATCH] bugfix oom kill init lead panic On Mon, 30 Nov 2015 18:54:29 +0800 <chenjie6@...wei.com> wrote: > From: chenjie <chenjie6@...wei.com> > > 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. > > ... > > --- a/mm/oom_kill.c > +++ b/mm/oom_kill.c > @@ -513,7 +513,7 @@ void oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order, > rcu_read_lock(); > for_each_process(p) > if (p->mm == mm && !same_thread_group(p, victim) && > - !(p->flags & PF_KTHREAD)) { > + !(p->flags & PF_KTHREAD) && !is_global_init(p)) { > if (p->signal->oom_score_adj == OOM_SCORE_ADJ_MIN) > continue; What kernel version are you using? I don't think this can happen in current code... -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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