Other Parts Discussed in Thread: SK-AM62B
Tool/software:
With latest SDK10 default wic file, on SK-AM62B board, just open mcu_can, system will crash in short. log as below
Iti is fine on SDK9. x
root@am62xx-evm:~# dmesg |grep can [ 0.674889] HugeTLB: 0 KiB vmemmap can be freed for a 1.00 GiB page [ 0.674897] HugeTLB: 0 KiB vmemmap can be freed for a 32.0 MiB page [ 0.674908] HugeTLB: 0 KiB vmemmap can be freed for a 2.00 MiB page [ 0.674915] HugeTLB: 0 KiB vmemmap can be freed for a 64.0 KiB page [ 6.902241] m_can_platform 4e08000.can: m_can device registered (irq=0, version=32) [ 6.933853] m_can_platform 4e18000.can: m_can device registered (irq=0, version=32) [ 6.973611] m_can_platform 20701000.can: m_can device registered (irq=422, version=32) [ 7.755492] m_can_platform 4e18000.can mcu_mcan1: renamed from can1 [ 7.771815] m_can_platform 4e08000.can mcu_mcan0: renamed from can0 [ 7.817488] m_can_platform 20701000.can main_mcan0: renamed from can2 root@am62xx-evm:~# ip link set mcu_mcan0 type can bitrate 1000000 dbitrate 5000000 fd on root@am62xx-evm:~# ip link set mcu_mcan0 up root@am62xx-evm:~# candump mcu_mcan0 [ 139.017058] rcu: INFO: rcu_preempt self-detected stall on CPU [ 139.017081] rcu: 1-...!: (22332 ticks this GP) idle=86ec/1/0x4000000000000002 softirq= /0 fqs=1 [ 139.017094] rcu: (t=21000 jiffies g=9913 q=98 ncpus=4) [ 139.017099] rcu: rcu_preempt kthread timer wakeup didn't happen for 20993 jiffies! g9913 f x0 RCU_GP_WAIT_FQS(5) ->state=0x402 [ 139.017106] rcu: Possible timer handling issue on cpu=1 timer-softirq=2324 [ 139.017110] rcu: rcu_preempt kthread starved for 20996 jiffies! g9913 f0x0 RCU_GP_WAIT_FQS 5) ->state=0x402 ->cpu=1 [ 139.017116] rcu: Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expec ed behavior. [ 139.017119] rcu: RCU grace-period kthread stack dump: [ 139.017122] task:rcu_preempt state:I stack:0 pid:16 ppid:2 flags:0x0000000 [ 139.017136] Call trace: [ 139.017140] 0xffff8000809c7874 [ 139.017144] 0xffff8000809c7b64 [ 139.017147] 0xffff8000809c7f48 [ 139.017150] 0xffff8000809cfad8 [ 139.017153] 0xffff80008009ca78 [ 139.017156] 0xffff80008009fc90 [ 139.017159] 0xffff800080059878 [ 139.017162] 0xffff800080014870 [ 139.017166] rcu: Stack dump where RCU GP kthread last ran: [ 139.017174] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G O 6.6.32-rt32-ti-rt-g 4a9ad081f0f-dirty #1 [ 139.017181] Hardware name: Texas Instruments AM625 SK (DT) [ 139.017185] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 139.017192] pc : 0xffff8000809c3c5c [ 139.017195] lr : 0xffff8000809c3c58 [ 139.017198] sp : ffff0000001c7e30 [ 139.017200] x29: ffff0000001c7e30 x28: 0000000000000000 x27: 0000000000000000 [ 139.017210] x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000 [ 139.017218] x23: 0000000000000000 x22: ffff00000017e9c0 x21: ffff800080e4ba7c [ 139.017227] x20: ffff800080e4b980 x19: 0000000000000001 x18: 0000000000000000 [ 139.017236] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 [ 139.017244] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 [ 139.017253] x11: 0000000000000000 x10: 00000000000008c0 x9 : ffff0000001c7d90 [ 139.017261] x8 : ffff00000017f2e0 x7 : 00000000000000c0 x6 : ffff00007f66bd98 [ 139.017270] x5 : ffff800080cb9db0 x4 : 0000000000000000 x3 : ffff7ffffe9b2000 [ 139.017279] x2 : 0000000000000001 x1 : ffff0000001c7e10 x0 : 4000000000000000 [ 139.017288] Call trace: [ 139.017290] 0xffff8000809c3c5c [ 139.017293] 0xffff800080073f84 [ 139.017296] 0xffff800080074198 [ 139.017299] 0xffff80008001cd84 [ 139.017302] 0xffff800080022ac8 [ 139.017310] CPU: 1 PID: 0 Comm: swapper/1 Tainted: G O 6.6.32-rt32-ti-rt-g 4a9ad081f0f-dirty #1 [ 139.017317] Hardware name: Texas Instruments AM625 SK (DT) [ 139.017319] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 139.017325] pc : 0xffff8000809c3c5c [ 139.017328] lr : 0xffff8000809c3c58 [ 139.017331] sp : ffff0000001c7e30 [ 139.017333] x29: ffff0000001c7e30 x28: 0000000000000000 x27: 0000000000000000 [ 139.017342] x26: 0000000000000000 x25: 0000000000000000 x24: 0000000000000000 [ 139.017351] x23: 0000000000000000 x22: ffff00000017e9c0 x21: ffff800080e4ba7c [ 139.017360] x20: ffff800080e4b980 x19: 0000000000000001 x18: 0000000000000000 [ 139.017368] x17: 0000000000000000 x16: 0000000000000000 x15: 0000000000000000 [ 139.017377] x14: 0000000000000000 x13: 0000000000000000 x12: 0000000000000000 [ 139.017385] x11: 0000000000000000 x10: 00000000000008c0 x9 : ffff0000001c7d90 [ 139.017394] x8 : ffff00000017f2e0 x7 : 00000000000000c0 x6 : ffff00007f66bd98 [ 139.017402] x5 : ffff800080cb9db0 x4 : 0000000000000000 x3 : ffff7ffffe9b2000 [ 139.017411] x2 : 0000000000000001 x1 : ffff0000001c7e10 x0 : 4000000000000000 [ 139.017420] Call trace: [ 139.017422] 0xffff8000809c3c5c [ 139.017425] 0xffff800080073f84 [ 139.017428] 0xffff800080074198 [ 139.017430] 0xffff80008001cd84 [ 139.017433] 0xffff800080022ac8
root@am62xx-evm:~# dmesg |grep can [ 0.498062] HugeTLB: 0 KiB vmemmap can be freed for a 1.00 GiB page [ 0.498070] HugeTLB: 0 KiB vmemmap can be freed for a 32.0 MiB page [ 0.498077] HugeTLB: 0 KiB vmemmap can be freed for a 2.00 MiB page [ 0.498085] HugeTLB: 0 KiB vmemmap can be freed for a 64.0 KiB page [ 7.212447] m_can_platform 4e08000.can: m_can device registered (irq=0, version=32) [ 7.227433] m_can_platform 4e18000.can: m_can device registered (irq=0, version=32) [ 7.242693] m_can_platform 20701000.can: m_can device registered (irq=422, version=32) [ 8.013780] m_can_platform 4e18000.can mcu_mcan1: renamed from can1 [ 8.028649] m_can_platform 4e08000.can mcu_mcan0: renamed from can0 [ 8.049921] m_can_platform 20701000.can main_mcan0: renamed from can2 root@am62xx-evm:~# root@am62xx-evm:~# ip link set mcu_mcan1 type can bitrate 1000000 dbitrate 5000000 fd on root@am62xx-evm:~# ip link set mcu_mcan1 up root@am62xx-evm:~# [ 292.334829] rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: [ 292.334851] rcu: Tasks blocked on level-0 rcu_node (CPUs 0-3): P33/3:b..l [ 292.334871] rcu: (detected by 1, t=21002 jiffies, g=10953, q=37 ncpus=4) [ 292.334879] task:ktimers/2 state:D stack:0 pid:33 ppid:2 flags:0x00000008 [ 292.334889] Call trace: [ 292.334893] 0xffff8000809c7874 [ 292.334898] 0xffff8000809c7b64 [ 292.334901] 0xffff8000809c84b8 [ 292.334904] 0xffff8000809cdf58 [ 292.334907] 0xffff8000809ce810 [ 292.334910] 0xffff8000800b2720 [ 292.334913] 0xffff8000800b27ac [ 292.334916] 0xffff8000790dd604 [ 292.334919] 0xffff8000790dd640 [ 292.334922] 0xffff8000800b1928 [ 292.334924] 0xffff8000800b1f00 [ 292.334927] 0xffff8000800102c0 [ 292.334930] 0xffff80008003c050 [ 292.334933] 0xffff80008005efb4 [ 292.334936] 0xffff800080059878 [ 292.334939] 0xffff800080014870
It is ok with main_can
root@am62xx-evm:~# dmesg |grep can [ 0.674682] HugeTLB: 0 KiB vmemmap can be freed for a 1.00 GiB page [ 0.674690] HugeTLB: 0 KiB vmemmap can be freed for a 32.0 MiB page [ 0.674697] HugeTLB: 0 KiB vmemmap can be freed for a 2.00 MiB page [ 0.674710] HugeTLB: 0 KiB vmemmap can be freed for a 64.0 KiB page [ 7.251485] m_can_platform 4e08000.can: m_can device registered (irq=0, version=32) [ 7.303449] m_can_platform 4e18000.can: m_can device registered (irq=0, version=32) [ 7.325038] m_can_platform 20701000.can: m_can device registered (irq=422, version=32) [ 8.279292] m_can_platform 4e08000.can mcu_mcan0: renamed from can0 [ 8.340323] m_can_platform 4e18000.can mcu_mcan1: renamed from can1 [ 8.357951] m_can_platform 20701000.can main_mcan0: renamed from can2 root@am62xx-evm:~# root@am62xx-evm:~# ip link set main_mcan0 type can bitrate 1000000 dbitrate 5000000 fd on root@am62xx-evm:~# ip link set main_mcan0 up root@am62xx-evm:~# root@am62xx-evm:~# root@am62xx-evm:~# uname -a Linux am62xx-evm 6.6.32-rt32-ti-rt-g04a9ad081f0f-dirty #1 SMP PREEMPT_RT Fri Jul 26 14:42:37 UTC 2024 aarch64 GNU/Linux root@am62xx-evm:~#
