Messages in this thread | | | Subject | Re: [PATCH v2] mISDN: hfcpci: Fix potential deadlock on &hc->lock | From | patchwork-bot+netdevbpf@kernel ... | Date | Sat, 29 Jul 2023 01:50:20 +0000 |
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Hello:
This patch was applied to netdev/net.git (main) by Jakub Kicinski <kuba@kernel.org>:
On Thu, 27 Jul 2023 08:56:19 +0000 you wrote: > As &hc->lock is acquired by both timer _hfcpci_softirq() and hardirq > hfcpci_int(), the timer should disable irq before lock acquisition > otherwise deadlock could happen if the timmer is preemtped by the hadr irq. > > Possible deadlock scenario: > hfcpci_softirq() (timer) > -> _hfcpci_softirq() > -> spin_lock(&hc->lock); > <irq interruption> > -> hfcpci_int() > -> spin_lock(&hc->lock); (deadlock here) > > [...]
Here is the summary with links: - [v2] mISDN: hfcpci: Fix potential deadlock on &hc->lock https://git.kernel.org/netdev/net/c/56c6be35fcbe
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