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Date: Wed, 10 Mar 2021 07:46:26 +0100 From: Daniel Glöckner <dg@...ix.com> To: netdev@...r.kernel.org, linux-can@...r.kernel.org Cc: Marc Kleine-Budde <mkl@...gutronix.de> Subject: Softirq error with mcp251xfd driver Hi, the mcp251xfd driver uses a threaded irq handler to queue skbs with the can_rx_offload_* helpers. I get the following error on every packet until the rate limit kicks in: NOHZ tick-stop error: Non-RCU local softirq work is pending, handler #08!!! Adding local_bh_disable/local_bh_enable around the can_rx_offload_* calls gets rid of the error, but is that the correct way to fix this? Internally the can_rx_offload code uses spin_lock_irqsave to safely manipulate its queue. Best regards, Daniel
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