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Date: Sat, 20 Sep 2014 16:30:12 +0200 From: Peter Zijlstra <peterz@...radead.org> To: Zefan Li <lizefan@...wei.com> Cc: Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>, mingo@...hat.com, tj@...nel.org, akpm@...ux-foundation.org, cgroups@...r.kernel.org, linux-kernel@...r.kernel.org, fernando_b1@....ntt.co.jp, keescook@...omium.org Subject: Re: Racy manipulation of task_struct->flags in cgroups code causes hard to reproduce kernel panics On Sat, Sep 20, 2014 at 01:55:54PM +0800, Zefan Li wrote: > We should make the updating of this flag atomic. > /* Per-process atomic flags. */ > #define PFA_NO_NEW_PRIVS 0x00000001 /* May not gain new privileges. */ > +#define PFA_SPREAD_PAGE 0x00000002 /* Spread page cache over cpuset */ > +#define PFA_SPREAD_SLAB 0x00000004 /* Spread some slab caches over cpuset */ Ooh, I was not ware we had those.. /me checks where that came from. Hmm weird, while I did get that patch it had a seccomp prefix when landing in my inbox so I ignored it. However the commit has a sched prefix (which I would not have ignored). Dubious things happened here. -- 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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