OpenWrt/LEDE Project

  • Status Unconfirmed
  • Percent Complete
    0%
  • Task Type Bug Report
  • Category Kernel
  • Assigned To No-one
  • Operating System All
  • Severity Medium
  • Priority Very Low
  • Reported Version Trunk
  • Due in Version Undecided
  • Due Date Undecided
  • Private
Attached to Project: OpenWrt/LEDE Project
Opened by John T - 27.05.2020

FS#3130 - WARNING: CPU: 0 PID: 2865 at net/core/flow_dissector.c:942 __skb_flow_dissect+0x448/0x156c

Supply the following if possible:
- Device problem occurs on

Linksys EA8500

- Software versions of OpenWrt/LEDE release, packages, etc.

OpenWrt SNAPSHOT r13373-e8fbb98c6d

- Steps to reproduce

Run dmesg and look for this exception stack. The system appears to run normally after boot.

[ 43.556644] ————[ cut here ]———— [ 43.556725] WARNING: CPU: 0 PID: 2865 at net/core/flow_dissector.c:942 skb_flow_dissect+0×448/0x156c
[ 43.560479] Modules linked in: ath10k_pci ath10k_core ath 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_MASQUERADE xt_LOG xt_HL xt_FLOWOFFLOAD xt_DSCP xt_CT xt_CLASSIFY nf_reject_ipv4 nf_nat nf_log_ipv4 nf_flow_table_hw nf_flow_table nf_conntrack_rtcache nf_conntrack_netlink nf_conncount iptable_raw iptable_mangle iptable_filter ipt_ah ipt_ECN ip_tables compat br_netfilter 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 xt_set ip_set_list_set ip_set_hash_netportnet ip_set_hash_netport ip_set_hash_netnet ip_set_hash_netiface ip_set_hash_net ip_set_hash_mac
[ 43.560909] ip_set_hash_ipportnet ip_set_hash_ipportip ip_set_hash_ipport ip_set_hash_ipmark ip_set_hash_ip ip_set_bitmap_port ip_set_bitmap_ipmac ip_set_bitmap_ip ip_set nfnetlink 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 ehci_hcd gpio_button_hotplug ext4 mbcache jbd2 exfat(C) crc32c_generic
[ 43.702907] CPU: 0 PID: 2865 Comm: charon Tainted: G C 5.4.42 #0
[ 43.725016] Hardware name: Generic DT based system
[ 43.732162] [<c030f954>] (unwind_backtrace) from [<c030b96c>] (show_stack+0×14/0×20)
[ 43.737012] [<c030b96c>] (show_stack) from [<c08c61e0>] (dump_stack+0×94/0xa8)
[ 43.744922] [<c08c61e0>] (dump_stack) from [<c031e7c0>] (
warn+0xb4/0xd0)
[ 43.751944] [<c031e7c0>] (warn) from [<c031e82c>] (warn_slowpath_fmt+0×50/0×90)
[ 43.758805] [<c031e82c>] (warn_slowpath_fmt) from [<c075aa10>] (
skb_flow_dissect+0×448/0x156c)
[ 43.766357] [<c075aa10>] (skb_flow_dissect) from [<c075bfd0>] (skb_get_hash_perturb+0x6c/0x1ac)
[ 43.775380] [<c075bfd0>] (skb_get_hash_perturb) from [<bf63dc80>] (ieee80211_reserve_tid+0xb50/0xf74 [mac80211])
[ 43.784311] [<bf63dc80>] (ieee80211_reserve_tid [mac80211]) from [<bf642154>] (ieee80211_tx_prepare_skb+0x23c/0×294 [mac80211])
[ 43.794456] [<bf642154>] (ieee80211_tx_prepare_skb [mac80211]) from [<bf643e6c>] (ieee80211_tx_pending+0xc4/0×294 [mac80211])
[ 43.805544] [<bf643e6c>] (ieee80211_tx_pending [mac80211]) from [<c0322740>] (tasklet_action_common.constprop.3+0×74/0x10c)
[ 43.816879] [<c0322740>] (tasklet_action_common.constprop.3) from [<c0302298>] (
do_softirq+0×130/0x2d4)
[ 43.827812] [<c0302298>] (do_softirq) from [<c0322948>] (do_softirq.part.2+0×48/0×58)
[ 43.837524] [<c0322948>] (do_softirq.part.2) from [<c0322a30>] (
local_bh_enable_ip+0xd8/0xe8)
[ 43.845354] [<c0322a30>] (__local_bh_enable_ip) from [<c08974e4>] (packet_poll+0×84/0×118)
[ 43.854038] [<c08974e4>] (packet_poll) from [<c0740fcc>] (sock_poll+0×98/0xc0)
[ 43.862370] [<c0740fcc>] (sock_poll) from [<c04647b0>] (do_sys_poll+0x2f0/0×558)
[ 43.869576] [<c04647b0>] (do_sys_poll) from [<c046552c>] (sys_poll+0×24/0×120)
[ 43.877118] [<c046552c>] (sys_poll) from [<c0301000>] (ret_fast_syscall+0×0/0×54)
[ 43.884136] Exception stack(0xd8fabfa8 to 0xd8fabff0)
[ 43.891708] bfa0: 00000000 00000000 b6920c40 00000006 ffffffff 00000000
[ 43.896756] bfc0: 00000000 00000000 012b4470 000000a8 b6920ce8 b6f3a8a4 b6920c40 b6920cbc
[ 43.904896] bfe0: b6920c00 b6920bf0 b6f8d5cc b6f8caa4
[ 43.913185] —[ end trace 36ce985abed2ad7b ]—


   dmesg.log (44.9 KiB)
John T commented on 27.05.2020 23:21

I should add that I have strongswan 5.8.4 installed along with:

root@EA8500:~# opkg list-installed|grep ipsec
iptables-mod-ipsec - 1.8.4-1
kmod-ipsec - 5.4.42-1
kmod-ipsec4 - 5.4.42-1
kmod-ipsec6 - 5.4.42-1
kmod-ipt-ipsec - 5.4.42-1
strongswan-ipsec - 5.8.4-1
strongswan-mod-kernel-libipsec - 5.8.4-1

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