Occasional crash on Cubieboard 2

[Torsten Beyer]

Hi all,

I am running a 5.19.1 kernel on a cubieboard and occasionally get the crash below. Does anyone here have any pointers for me as to what may be going wrong?

thanks

Torsten

[ 5826.086429] Unable to handle kernel paging request at virtual address e975ebf8
[ 5826.093658] [e975ebf8] *pgd=6961141e(bad)
[ 5826.097697] Internal error: Oops: 8000000d [#1] SMP ARM
[ 5826.102930] Modules linked in:
[ 5826.105996] CPU: 0 PID: 7 Comm: kworker/u4:0 Not tainted 5.19.1 #1
[ 5826.112186] Hardware name: Allwinner sun7i (A20) Family
[ 5826.117414] Workqueue: phy0 0xe975ebf8
[ 5826.121188] PC is at 0xe975ebf8
[ 5826.124338] LR is at process_one_work+0x1d8/0x3e4
[ 5826.129068] pc : [] lr : [] psr: 20000013
[ 5826.135336] sp : f0835f30 ip : 00000000 fp : c1062e80
[ 5826.140564] r10: c1008e05 r9 : 00000080 r8 : 00000000
[ 5826.145792] r7 : c1008e00 r6 : c1006200 r5 : c100b900 r4 : c1b01d94
[ 5826.152323] r3 : e975ebf8 r2 : c100621c r1 : c1371a64 r0 : c1b01d94
[ 5826.158855] Flags: nzCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment none
[ 5826.165996] Control: 10c5387d Table: 421c806a DAC: 00000051
[ 5826.171742] Register r0 information: slab kmalloc-8k start c1b00000 pointer offset 7572 size 8192
[ 5826.180655] Register r1 information: slab kmalloc-512 start c1371a00 pointer offset 100 size 512
[ 5826.189472] Register r2 information: slab kmalloc-512 start c1006200 pointer offset 28 size 512
[ 5826.198203] Register r3 information: non-slab/vmalloc memory
[ 5826.203873] Register r4 information: slab kmalloc-8k start c1b00000 pointer offset 7572 size 8192
[ 5826.212777] Register r5 information: slab kmalloc-128 start c100b900 pointer offset 0 size 128
[ 5826.221421] Register r6 information: slab kmalloc-512 start c1006200 pointer offset 0 size 512
[ 5826.230064] Register r7 information: slab pool_workqueue start c1008e00 pointer offset 0
[ 5826.238180] Register r8 information: NULL pointer
[ 5826.242892] Register r9 information: non-paged memory
[ 5826.247951] Register r10 information: slab pool_workqueue start c1008e00 pointer offset 5
[ 5826.256154] Register r11 information: slab task_struct start c1062e80 pointer offset 0
[ 5826.264098] Register r12 information: NULL pointer
[ 5826.268896] Process kworker/u4:0 (pid: 7, stack limit = 0x712cd2c2)
[ 5826.275191] Stack: (0xf0835f30 to 0xf0836000)
[ 5826.279561] 5f20: c1006200 c1006200 c100621c c100b900
[ 5826.287745] 5f40: c1006200 c100b918 c100621c c0d03d40 00000088 c1062e80 c1006200 c013248c
[ 5826.295930] 5f60: c100b900 c0dbfb67 f081de8c c103f080 c1062e80 c0132434 c100b900 c103f440
[ 5826.304114] 5f80: f081de8c 00000000 00000000 c0139a2c c103f080 c013995c 00000000 00000000
[ 5826.312297] 5fa0: 00000000 00000000 00000000 c0100148 00000000 00000000 00000000 00000000
[ 5826.320480] 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5826.328663] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000 00000000 00000000
[ 5826.336856] process_one_work from worker_thread+0x58/0x54c
[ 5826.342460] worker_thread from kthread+0xd0/0xec
[ 5826.347191] kthread from ret_from_fork+0x14/0x2c
[ 5826.351916] Exception stack(0xf0835fb0 to 0xf0835ff8)
[ 5826.356976] 5fa0: 00000000 00000000 00000000 00000000
[ 5826.365159] 5fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5826.373340] 5fe0: 00000000 00000000 00000000 00000000 00000013 00000000
[ 5826.379965] Code: fafffdff ffffffef fbf7ef97 fffdffff (ffffffff)
[ 5826.386065] ---[ end trace 0000000000000000 ]---
[ 5832.033309] [drm:lima_sched_timedout_job] ERROR lima job timeout
[ 5846.203275] rcu: INFO: rcu_sched detected stalls on CPUs/tasks:
[ 5846.209243] (detected by 0, t=2102 jiffies, g=469341, q=181 ncpus=2)
[ 5846.215697] rcu: All QSes seen, last rcu_sched kthread activity 2102 (554620-552518), jiffies_till_next_fqs=1, root ->qsmask 0x0
[ 5846.227262] rcu: rcu_sched kthread timer wakeup didn't happen for 2101 jiffies! g469341 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x200
[ 5846.238568] rcu: Possible timer handling issue on cpu=1 timer-softirq=113072
[ 5846.245703] rcu: rcu_sched kthread starved for 2102 jiffies! g469341 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x200 ->cpu=1
[ 5846.256056] rcu: Unless rcu_sched kthread gets sufficient CPU time, OOM is now expected behavior.
[ 5846.265009] rcu: RCU grace-period kthread stack dump:
[ 5846.270060] task:rcu_sched state:R stack: 7212 pid: 10 ppid: 2 flags:0x00000000
[ 5846.278457] __schedule from schedule+0x48/0xb0
[ 5846.283023] schedule from schedule_timeout+0x6c/0xcc
[ 5846.288097] schedule_timeout from rcu_gp_fqs_loop+0xf4/0x2a8
[ 5846.293868] rcu_gp_fqs_loop from rcu_gp_kthread+0xf0/0x10c
[ 5846.299459] rcu_gp_kthread from kthread+0xd0/0xec
[ 5846.304275] kthread from ret_from_fork+0x14/0x2c
[ 5846.309000] Exception stack(0xf0841fb0 to 0xf0841ff8)
[ 5846.314062] 1fa0: 00000000 00000000 00000000 00000000
[ 5846.322245] 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5846.330426] 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000
[ 5846.337044] rcu: Stack dump where RCU GP kthread last ran:
[ 5846.342529] Sending NMI from CPU 0 to CPUs 1:
[ 5909.253273] rcu: INFO: rcu_sched detected stalls on CPUs/tasks:
[ 5909.259240] (detected by 0, t=8407 jiffies, g=469341, q=193 ncpus=2)
[ 5909.265694] rcu: All QSes seen, last rcu_sched kthread activity 8407 (560925-552518), jiffies_till_next_fqs=1, root ->qsmask 0x0
[ 5909.277260] rcu: rcu_sched kthread timer wakeup didn't happen for 8406 jiffies! g469341 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x200
[ 5909.288565] rcu: Possible timer handling issue on cpu=1 timer-softirq=113072
[ 5909.295700] rcu: rcu_sched kthread starved for 8407 jiffies! g469341 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x200 ->cpu=1
[ 5909.306052] rcu: Unless rcu_sched kthread gets sufficient CPU time, OOM is now expected behavior.
[ 5909.315005] rcu: RCU grace-period kthread stack dump:
[ 5909.320056] task:rcu_sched state:R stack: 7212 pid: 10 ppid: 2 flags:0x00000000
[ 5909.328450] __schedule from schedule+0x48/0xb0
[ 5909.333019] schedule from schedule_timeout+0x6c/0xcc
[ 5909.338093] schedule_timeout from rcu_gp_fqs_loop+0xf4/0x2a8
[ 5909.343864] rcu_gp_fqs_loop from rcu_gp_kthread+0xf0/0x10c
[ 5909.349453] rcu_gp_kthread from kthread+0xd0/0xec
[ 5909.354268] kthread from ret_from_fork+0x14/0x2c
[ 5909.358991] Exception stack(0xf0841fb0 to 0xf0841ff8)
[ 5909.364054] 1fa0: 00000000 00000000 00000000 00000000
[ 5909.372237] 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5909.380417] 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000
[ 5909.387035] rcu: Stack dump where RCU GP kthread last ran:
[ 5909.392520] Sending NMI from CPU 0 to CPUs 1:
[ 5972.303272] rcu: INFO: rcu_sched detected stalls on CPUs/tasks:
[ 5972.309244] (detected by 0, t=14712 jiffies, g=469341, q=201 ncpus=2)
[ 5972.315785] rcu: All QSes seen, last rcu_sched kthread activity 14712 (567230-552518), jiffies_till_next_fqs=1, root ->qsmask 0x0
[ 5972.327437] rcu: rcu_sched kthread timer wakeup didn't happen for 14711 jiffies! g469341 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x200
[ 5972.338829] rcu: Possible timer handling issue on cpu=1 timer-softirq=113072
[ 5972.345965] rcu: rcu_sched kthread starved for 14712 jiffies! g469341 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x200 ->cpu=1
[ 5972.356404] rcu: Unless rcu_sched kthread gets sufficient CPU time, OOM is now expected behavior.
[ 5972.365356] rcu: RCU grace-period kthread stack dump:
[ 5972.370407] task:rcu_sched state:R stack: 7212 pid: 10 ppid: 2 flags:0x00000000
[ 5972.378802] __schedule from schedule+0x48/0xb0
[ 5972.383370] schedule from schedule_timeout+0x6c/0xcc
[ 5972.388445] schedule_timeout from rcu_gp_fqs_loop+0xf4/0x2a8
[ 5972.394216] rcu_gp_fqs_loop from rcu_gp_kthread+0xf0/0x10c
[ 5972.399806] rcu_gp_kthread from kthread+0xd0/0xec
[ 5972.404621] kthread from ret_from_fork+0x14/0x2c
[ 5972.409346] Exception stack(0xf0841fb0 to 0xf0841ff8)
[ 5972.414408] 1fa0: 00000000 00000000 00000000 00000000
[ 5972.422591] 1fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[ 5972.430772] 1fe0: 00000000 00000000 00000000 00000000 00000013 00000000
[ 5972.437390] rcu: Stack dump where RCU GP kthread last ran:
[ 5972.442875] Sending NMI from CPU 0 to CPUs 1:
[ 5986.315209] systemd[1]: systemd-logind.service: Watchdog timeout (limit 3min)!
[ 5986.322689] systemd[1]: systemd-logind.service: Killing process 197 (systemd-logind) with signal SIGABRT.