Re: [PATCH 00/17] v3 net generic subsystem refcount conversions

From	Eric Dumazet <eric.dumazet@gmail.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH 00/17] v3 net generic subsystem refcount conversions
Date	2017-07-03 12:40 +0200
Message-ID	<tZ6VR-5S-23@gated-at.bofh.it> (permalink)
References	<tY12a-497-11@gated-at.bofh.it> <tZ5Q8-7za-37@gated-at.bofh.it> <tZ6j8-7MN-23@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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On Mon, 2017-07-03 at 09:57 +0000, Reshetova, Elena wrote:

> Thank you very much for the report! This is an underflow (dec/sub from
> zero) that is reported by WARNING. 
> I guess it is unlikely that actual code underflows, so the most
> probable cause is that it attempted to do refcount_inc/add() from
> zero, but then failed. 
> However  in that case you should have seen another warning on
> refcount_inc() somewhere earlier. That one is actually the one I need
> to see to track the root cause. 
> Could you tell me how do you arrive to the below output? Boot in what
> config/etc. 
> I can try to reproduce to debug further. 

I sent this fix : 

https://patchwork.ozlabs.org/patch/783389/

Thanks.

Thread

[PATCH 00/17] v3 net generic subsystem refcount conversions Elena Reshetova <elena.reshetova@intel.com> - 2017-06-30 12:20 +0200
  [PATCH 05/17] net: convert sk_buff.users from atomic_t to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-06-30 12:20 +0200
  [PATCH 03/17] net: convert neigh_params.refcnt from atomic_t to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-06-30 12:20 +0200
  [PATCH 16/17] net: convert netlbl_lsm_cache.refcount from atomic_t to refcount_t Elena Reshetova <elena.reshetova@intel.com> - 2017-06-30 12:20 +0200
  Re: [PATCH 00/17] v3 net generic subsystem refcount conversions Eric Dumazet <eric.dumazet@gmail.com> - 2017-07-03 11:30 +0200
    RE: [PATCH 00/17] v3 net generic subsystem refcount conversions "Reshetova, Elena" <elena.reshetova@intel.com> - 2017-07-03 12:00 +0200
      Re: [PATCH 00/17] v3 net generic subsystem refcount conversions Eric Dumazet <eric.dumazet@gmail.com> - 2017-07-03 12:40 +0200
    Re: [PATCH 00/17] v3 net generic subsystem refcount conversions "Levin, Alexander (Sasha Levin)" <alexander.levin@verizon.com> - 2017-07-08 21:00 +0200
      RE: [PATCH 00/17] v3 net generic subsystem refcount conversions "Reshetova, Elena" <elena.reshetova@intel.com> - 2017-07-10 09:20 +0200

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