We implemented the MCP25xxfd driver patch V7 and are experiencing an issue when the CPU load for the mcp25xxfd driver is over 30%. Using CANDump or our custom application, we see: root@ccimx6ulcvdp:~/tmp# BUG: using __this_cpu_add() in preemptible [00000000] code: irq/194-mcp25xx/805 When this occurs, the kernel eventually crashes. Has this been seen by anyone, or any suggestions on what could cause this? Our system is: CAN 2.0 Std, 500Kbps, Tx/Rx enabled, but only Receiving CAN messages Digi Imx6ul, MCP2517 clk 40Mhz SPI Clk 12 Mhz Linux version 4.9.65-dey+gf832589 (gcc version 6.2.0 (GCC) ) #41 SMP PREEMPT Sun Jul 7 21:39:25 EDT 2019 On a secondary question, in the driver comments, it was mentioned that transfer rate was >99% with no network statistics, but when network statistics are used, the transfer rate drops 60%. We don't care about network statistics, can you provide info on how you turned this off? Thanks. Tom
