Hello: This patch was applied to netdev/net.git (refs/heads/master): On Tue, 7 Sep 2021 20:29:40 +0900 you wrote: > The cur_tx counter must be incremented after TACT bit of > txdesc->status was set. However, a CPU is possible to reorder > instructions and/or memory accesses between cur_tx and > txdesc->status. And then, if TX interrupt happened at such a > timing, the sh_eth_tx_free() may free the descriptor wrongly. > So, add wmb() before cur_tx++. > Otherwise NETDEV WATCHDOG timeout is possible to happen. > > [...] Here is the summary with links: - net: renesas: sh_eth: Fix freeing wrong tx descriptor https://git.kernel.org/netdev/net/c/0341d5e3d1ee You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html