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I check thread #1490 , it seems the issue is resolved after Linux kernel version 5.4, but I hit the same issue in 5.10.17-v7l+. I have two CAN mcp2515 which are can0 and can1, I can see interrupt number for can0 increasing, but interrupt number for can1 is not updated, to mitigate the issue, I have to ifconfig down then up the can1 interface
CAN interfaces:
pi@raspberrypi:~ $ ls -l /sys/class/net/can*
lrwxrwxrwx 1 root root 0 Oct 13 18:17 /sys/class/net/can0 -> ../../devices/platform/soc/fe204000.spi/spi_master/spi0/spi0.0/net/can0
lrwxrwxrwx 1 root root 0 Oct 13 18:17 /sys/class/net/can1 -> ../../devices/platform/soc/fe204000.spi/spi_master/spi0/spi0.1/net/can1
Describe the bug
I check thread #1490 , it seems the issue is resolved after Linux kernel version 5.4, but I hit the same issue in 5.10.17-v7l+. I have two CAN mcp2515 which are can0 and can1, I can see interrupt number for can0 increasing, but interrupt number for can1 is not updated, to mitigate the issue, I have to ifconfig down then up the can1 interface
CAN interfaces:
pi@raspberrypi:~ $ ls -l /sys/class/net/can*
lrwxrwxrwx 1 root root 0 Oct 13 18:17 /sys/class/net/can0 -> ../../devices/platform/soc/fe204000.spi/spi_master/spi0/spi0.0/net/can0
lrwxrwxrwx 1 root root 0 Oct 13 18:17 /sys/class/net/can1 -> ../../devices/platform/soc/fe204000.spi/spi_master/spi0/spi0.1/net/can1
CAN interface settings:
dtoverlay=mcp2515-can1,oscillator=16000000,interrupt=25
dtoverlay=mcp2515-can0,oscillator=16000000,interrupt=23
interrupts for CAN interface:
65: 386461527 0 0 0 pinctrl-bcm2835 23 Level spi0.0
66: 196348589 0 0 0 pinctrl-bcm2835 25 Level spi0.1
65: 386468363 0 0 0 pinctrl-bcm2835 23 Level spi0.0
66: 196348589 0 0 0 pinctrl-bcm2835 25 Level spi0.1 <------ the number number never changes
dmesg:
[ 862.822709] NET: Registered protocol family 29
[ 862.835495] can: raw protocol
[ 863.733343] IPv6: ADDRCONF(NETDEV_CHANGE): can1: link becomes ready
[61747.752702] mcp251x spi0.1 can1: bus-off
[62052.360283] IPv6: ADDRCONF(NETDEV_CHANGE): can1: link becomes ready
[64433.021816] mcp251x spi0.1 can1: bus-off
[64909.268667] IPv6: ADDRCONF(NETDEV_CHANGE): can1: link becomes ready
[73818.267806] mcp251x spi0.1 can1: bus-off
[74703.469522] IPv6: ADDRCONF(NETDEV_CHANGE): can1: link becomes ready
[166261.970958] mcp251x spi0.1 can1: bus-off
[236447.829068] IPv6: ADDRCONF(NETDEV_CHANGE): can1: link becomes ready
[271674.431391] mcp251x spi0.1 can1: bus-off
[391296.075989] IPv6: ADDRCONF(NETDEV_CHANGE): can1: link becomes ready
[417058.187329] mcp251x spi0.1 can1: bus-off
[417916.801653] IPv6: ADDRCONF(NETDEV_CHANGE): can1: link becomes ready
[603595.631653] mcp251x spi0.1 can1: bus-off
[668950.224509] IPv6: ADDRCONF(NETDEV_CHANGE): can1: link becomes ready
[777225.942027] mcp251x spi0.1 can1: bus-off
[777773.129797] IPv6: ADDRCONF(NETDEV_CHANGE): can1: link becomes ready
[778675.537745] mcp251x spi0.1 can1: bus-off
[780130.573070] IPv6: ADDRCONF(NETDEV_CHANGE): can1: link becomes ready
[781559.329248] mcp251x spi0.1 can1: bus-off
[787619.193734] IPv6: ADDRCONF(NETDEV_CHANGE): can1: link becomes ready
[868826.758855] mcp251x spi0.1 can1: bus-off
[873260.941913] IPv6: ADDRCONF(NETDEV_CHANGE): can1: link becomes ready
[934716.070344] mcp251x spi0.1 can1: bus-off
[937716.577485] IPv6: ADDRCONF(NETDEV_CHANGE): can1: link becomes ready
[947891.235598] mcp251x spi0.1 can1: bus-off
[950271.578745] IPv6: ADDRCONF(NETDEV_CHANGE): can1: link becomes ready
[950653.701456] mcp251x spi0.1 can1: bus-off
[953176.018484] IPv6: ADDRCONF(NETDEV_CHANGE): can1: link becomes ready
[1003151.014732] mcp251x spi0.1 can1: bus-off
[1005757.532597] IPv6: ADDRCONF(NETDEV_CHANGE): can1: link becomes ready
[1006760.804413] mcp251x spi0.1 can1: bus-off
pi@raspberrypi:~ $ ip -details -statistics link show can1
5: can1: <NO-CARRIER,NOARP,UP,ECHO> mtu 16 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 1000
link/can promiscuity 0 minmtu 0 maxmtu 0
can state BUS-OFF restart-ms 0
bitrate 500000 sample-point 0.875
tq 125 prop-seg 6 phase-seg1 7 phase-seg2 2 sjw 1
mcp251x: tseg1 3..16 tseg2 2..8 sjw 1..4 brp 1..64 brp-inc 1
clock 8000000
re-started bus-errors arbit-lost error-warn error-pass bus-off
0 0 0 146 147 16 numtxqueues 1 numrxqueues 1 gso_max_size 65536 gso_max_segs 65535
RX: bytes packets errors dropped overrun mcast
1927848968 240981121 60366 7 60366 0
TX: bytes packets errors dropped carrier collsns
12173752 1521719 16 16 0 0
Steps to reproduce the behaviour
a long time stress might reproduce the issue, but not always happens
Device (s)
Raspberry Pi 4 Mod. B
System
pi@raspberrypi:~ $ uname -a
Linux raspberrypi 5.10.17-v7l+ #1403 SMP Mon Feb 22 11:33:35 GMT 2021 armv7l GNU/Linux
Logs
No response
Additional context
No response
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