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Date: Sun, 16 Jan 2022 12:40:08 +0000 From: patchwork-bot+netdevbpf@...nel.org To: Wen Gu <guwen@...ux.alibaba.com> Cc: kgraul@...ux.ibm.com, davem@...emloft.net, kuba@...nel.org, dust.li@...ux.alibaba.com, linux-s390@...r.kernel.org, netdev@...r.kernel.org, linux-kernel@...r.kernel.org Subject: Re: [PATCH net v2] net/smc: Fix hung_task when removing SMC-R devices Hello: This patch was applied to netdev/net.git (master) by David S. Miller <davem@...emloft.net>: On Sun, 16 Jan 2022 15:43:42 +0800 you wrote: > A hung_task is observed when removing SMC-R devices. Suppose that > a link group has two active links(lnk_A, lnk_B) associated with two > different SMC-R devices(dev_A, dev_B). When dev_A is removed, the > link group will be removed from smc_lgr_list and added into > lgr_linkdown_list. lnk_A will be cleared and smcibdev(A)->lnk_cnt > will reach to zero. However, when dev_B is removed then, the link > group can't be found in smc_lgr_list and lnk_B won't be cleared, > making smcibdev->lnk_cnt never reaches zero, which causes a hung_task. > > [...] Here is the summary with links: - [net,v2] net/smc: Fix hung_task when removing SMC-R devices https://git.kernel.org/netdev/net/c/56d99e81ecbc You are awesome, thank you! -- Deet-doot-dot, I am a bot. https://korg.docs.kernel.org/patchwork/pwbot.html
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