Messages in this thread | | | Date | Mon, 1 Dec 2014 17:10:37 +0000 | From | Will Deacon <> | Subject | Re: frequent lockups in 3.18rc4 |
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On Mon, Dec 01, 2014 at 05:05:06PM +0000, Linus Torvalds wrote: > On Mon, Dec 1, 2014 at 3:48 AM, Will Deacon <will.deacon@arm.com> wrote: > > so for some bizarre reason, child1 (27912) managed to execve oom_score > > from /proc. > > That sounds like you have a binfmt that accepts crap. Possibly > ARM-specific, although more likely it's just a misc script. > > > We can see the child that did the execve has somehow gained its own > > child process (27921) that we're unable to backtrace. I can't see any > > clone/fork syscalls in the log for 27912. > > Well, it wouldn't be trinity any more, it would likely be some execve > script (think "/bin/sh", except likely through binfmt_misc). > > Do you have anything in /proc/sys/fs/binfmt_misc? I don't see anything > else that would trigger it.
So I don't even have binfmt-misc compiled in. The two handlers I have are BINFMT_ELF and BINFMT_SCRIPT, but they both check for headers that we won't get back from oom_score afaict.
> This doesn't really look anything like DaveJ's issue, but who knows..
It's the only lockup I'm seeing on arm64 with trinity, but I agree that it's not very helpful.
Will
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