Messages in this thread | | | Date | Mon, 17 Apr 2023 14:44:25 +0300 | From | Leon Romanovsky <> | Subject | Re: [patch V3 0/4] net, refcount: Address dst_entry reference count scalability issues |
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On Thu, Mar 23, 2023 at 09:55:27PM +0100, Thomas Gleixner wrote: > Hi! > > This is version 3 of this series. Version 2 can be found here: > > https://lore.kernel.org/lkml/20230307125358.772287565@linutronix.de
Hi,
I want to raise your attention to this bug report from Intel. https://lore.kernel.org/all/202304162125.18b7bcdd-oliver.sang@intel.com/
We (Nvidia) are experiencing similar failures in our regressions too. Revert of last two patches [1] from this series removed the panics, but didn't add confidence due to another (???) netdev failure:
[ +10.080020] unregister_netdevice: waiting for eth3 to become free. Usage count = 2
Thanks
[1] bc9d3a9f2afc net: dst: Switch to rcuref_t reference counting d288a162dd1c net: dst: Prevent false sharing vs. dst_entry:: __refcnt
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