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Date: Mon, 30 Nov 2015 18:54:29 +0800 From: <chenjie6@...wei.com> To: <linux-mm@...ck.org>, <linux-kernel@...r.kernel.org>, <David.Woodhouse@...el.com>, <zhihui.gao@...wei.com> CC: <chenjie6@...wei.com>, <lizefan@...wei.com>, <akpm@...ux-foundation.org>, <stable@...r.kernel.org> Subject: [PATCH] bugfix oom kill init lead panic 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. Cc: <stable@...r.kernel.org> Signed-off-by: Chen Jie <chenjie6@...wei.com> --- mm/oom_kill.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 4d87d7c..de77cbc 100644 --- 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; -- 1.8.0 -- 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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