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Date: Sun, 21 Jul 2019 12:29:58 -0700 (PDT) From: David Miller <davem@...emloft.net> To: brking@...ux.vnet.ibm.com Cc: GR-everest-linux-l2@...vell.com, skalluru@...vell.com, aelior@...vell.com, netdev@...r.kernel.org Subject: Re: [PATCH] bnx2x: Prevent load reordering in tx completion processing From: Brian King <brking@...ux.vnet.ibm.com> Date: Mon, 15 Jul 2019 16:41:50 -0500 > This patch fixes an issue seen on Power systems with bnx2x which results > in the skb is NULL WARN_ON in bnx2x_free_tx_pkt firing due to the skb > pointer getting loaded in bnx2x_free_tx_pkt prior to the hw_cons > load in bnx2x_tx_int. Adding a read memory barrier resolves the issue. > > Signed-off-by: Brian King <brking@...ux.vnet.ibm.com> Applied and queued up for -stable.
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