OpenWrt/LEDE Project

  • Status Unconfirmed
  • Percent Complete
    0%
  • Task Type Bug Report
  • Category Kernel
  • Assigned To No-one
  • Operating System All
  • Severity High
  • Priority Very Low
  • Reported Version Trunk
  • Due in Version Undecided
  • Due Date Undecided
  • Private
Attached to Project: OpenWrt/LEDE Project
Opened by John T - 18.06.2020

FS#3190 - Kernel Oops and reboot on ipq806x (EA8500): msm_read_timer_count

This happened on OpenWrt SNAPSHOT r13520-68b94f0fb4, but it’s pretty random. I haven’t been able to figure out what causes it. It usually happens at least once within a week. I’m not sure why there’s no call stack here, I also tried `cat /sys/kernel/debug/crashlog` a few hours after it happened and got a “No such file or directory”.

# uname -a
Linux EA8500S 5.4.43 #0 SMP Mon Jun 8 19:16:17 2020 armv7l GNU/Linux


[333045.256692] 8<--- cut here ---
[333045.256733] Unable to handle kernel NULL pointer dereference at virtual address 0000000a
[333045.258656] pgd = 8948efb0
[333045.267139] [0000000a] *pgd=00000000
[333045.269709] Internal error: Oops: 5 [#1] SMP ARM
[333045.273404] Modules linked in: nf_flow_table_ipv6 nf_flow_table_ipv4 nf_flow_table_inet ath10k_pci ath10k_core ath nft_reject_ipv6 nft_reject_ipv4 nft_reject_inet nft_reject nft_redir nft_quota nft_objref nft_numgen nft_nat nft_masq nft_log nft_limit nft_hash nft_flow_offload nft_ct nft_counter nf_tables_set nf_tables nf_conntrack_netlink mac80211 iptable_nat ipt_REJECT cfg80211 xt_time xt_tcpudp xt_tcpmss xt_statistic xt_state xt_recent xt_policy xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_helper xt_esp xt_ecn xt_dscp xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS xt_REDIRECT xt_NETMAP xt_MASQUERADE xt_LOG xt_HL xt_FLOWOFFLOAD xt_DSCP xt_CT xt_CLASSIFY ts_fsm ts_bm nfnetlink nf_reject_ipv4 nf_nat_tftp nf_nat_snmp_basic nf_nat_sip nf_nat_rtsp nf_nat_pptp nf_nat_irc nf_nat_h323 nf_nat_ftp nf_nat_amanda nf_nat nf_log_ipv4 nf_flow_table_hw nf_flow_table nf_conntrack_tftp nf_conntrack_snmp nf_conntrack_sip nf_conntrack_rtsp nf_conntrack_rtcache
[333045.273734]  nf_conntrack_pptp nf_conntrack_irc nf_conntrack_h323 nf_conntrack_ftp nf_conntrack_broadcast ts_kmp nf_conntrack_amanda nf_conncount iptable_raw iptable_mangle iptable_filter ipt_ah ipt_ECN ip_tables compat asn1_decoder fuse act_connmark nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 sch_tbf sch_ingress sch_htb sch_hfsc em_u32 cls_u32 cls_tcindex cls_route cls_matchall cls_fw cls_flow cls_basic act_skbedit act_mirred ledtrig_usbport ledtrig_heartbeat nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 ifb ipcomp6 xfrm6_tunnel esp6 ah6 xfrm4_tunnel ipcomp esp4 ah4 tunnel6 tunnel4 tun xfrm_user xfrm_ipcomp af_key xfrm_algo vfat fat ntfs nls_utf8 nls_iso8859_1 nls_cp437 sha1_generic md5 echainiv des_generic libdes cbc authenc usb_storage leds_gpio xhci_plat_hcd xhci_pci xhci_hcd dwc3 dwc3_qcom ohci_platform ohci_hcd phy_qcom_dwc3 ahci fsl_mph_dr_of ehci_platform ehci_fsl sd_mod ahci_platform libahci_platform libahci libata scsi_mod
[333045.343201]  ehci_hcd gpio_button_hotplug ext4 mbcache jbd2 exfat(C) crc32c_generic
[333045.452936] CPU: 0 PID: 10391 Comm: kworker/0:2 Tainted: G         C        5.4.43 #0
[333045.460735] Hardware name: Generic DT based system
[333045.468481] Workqueue: events dbs_work_handler
[333045.473245] PC is at msm_read_timer_count+0xc/0x18
[333045.477746] LR is at msm_read_current_timer+0x1c/0x28
[333045.482608] pc : [<c0733ea8>]    lr : [<c0733ee4>]    psr: a0000013
[333045.487814] sp : da0f1dc0  ip : 00000000  fp : dce52880
[333045.494327] r10: ddb8d010  r9 : dd648b40  r8 : 16e36000
[333045.499619] r7 : dd511240  r6 : 00000006  r5 : 00000001  r4 : c0c68ea0
[333045.504919] r3 : 00000006  r2 : 1fffa6f0  r1 : 20000013  r0 : c0c28428
[333045.511261] Flags: NzCv  IRQs on  FIQs on  Mode SVC_32  ISA ARM  Segment none
John T commented on 03.07.2020 06:07

Just happened again today:

[384122.553628] 8<--- cut here ---
[384122.553662] Unable to handle kernel NULL pointer dereference at virtual address 00000004
[384122.555587] pgd = c7e6a589
[384122.564048] [00000004] *pgd=00000000
[384122.566529] Internal error: Oops: 5 [#1] SMP ARM
[384122.570334] Modules linked in: nf_flow_table_ipv6 nf_flow_table_ipv4 nf_flow_table_inet ath10k_pci ath10k_core ath nft_reject_ipv6 nft_reject_ipv4 nft_reject_inet nft_reject nft_redir nft_quota nft_objref nft_numgen nft_nat nft_masq nft_log nft_limit nft_hash nft_flow_offload nft_ct nft_counter nf_tables_set nf_tables nf_conntrack_netlink mac80211 iptable_nat ipt_REJECT cfg80211 xt_time xt_tcpudp xt_tcpmss xt_statistic xt_state xt_recent xt_policy xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_helper xt_esp xt_ecn xt_dscp xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS xt_REDIRECT xt_NETMAP xt_MASQUERADE xt_LOG xt_HL xt_FLOWOFFLOAD xt_DSCP xt_CT xt_CLASSIFY ts_fsm ts_bm nfnetlink nf_reject_ipv4 nf_nat_tftp nf_nat_snmp_basic nf_nat_sip nf_nat_rtsp nf_nat_pptp nf_nat_irc nf_nat_h323 nf_nat_ftp nf_nat_amanda nf_nat nf_log_ipv4 nf_flow_table_hw nf_flow_table nf_conntrack_tftp nf_conntrack_snmp nf_conntrack_sip nf_conntrack_rtsp nf_conntrack_rtcache
[384122.570534]  nf_conntrack_pptp nf_conntrack_irc nf_conntrack_h323 nf_conntrack_ftp nf_conntrack_broadcast ts_kmp nf_conntrack_amanda nf_conncount iptable_raw iptable_mangle iptable_filter ipt_ah ipt_ECN ip_tables compat asn1_decoder fuse act_connmark nf_conntrack nf_defrag_ipv6 nf_defrag_ipv4 sch_tbf sch_ingress sch_htb sch_hfsc em_u32 cls_u32 cls_tcindex cls_route cls_matchall cls_fw cls_flow cls_basic act_skbedit act_mirred ledtrig_usbport ledtrig_heartbeat nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables ip6t_REJECT x_tables nf_reject_ipv6 ifb ipcomp6 xfrm6_tunnel esp6 ah6 xfrm4_tunnel ipcomp esp4 ah4 tunnel6 tunnel4 tun xfrm_user xfrm_ipcomp af_key xfrm_algo vfat fat ntfs nls_utf8 nls_iso8859_1 nls_cp437 sha1_generic md5 echainiv des_generic libdes cbc authenc usb_storage leds_gpio xhci_plat_hcd xhci_pci xhci_hcd dwc3 dwc3_qcom ohci_platform ohci_hcd phy_qcom_dwc3 ahci fsl_mph_dr_of ehci_platform ehci_fsl sd_mod ahci_platform libahci_platform libahci libata scsi_mod
[384122.639988]  ehci_hcd gpio_button_hotplug ext4 mbcache jbd2 exfat(C) crc32c_generic
[384122.749861] CPU: 1 PID: 19026 Comm: kworker/1:0 Tainted: G        WC        5.4.43 #0

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