[FS#355] PPPoE kernel panic

[LEDE Bugs]

A new Flyspray task has been opened.  Details are below. 

User who did this - lucize (lucize) 

Attached to Project - LEDE Project
Summary - PPPoE kernel panic
Task Type - Bug Report
Category - Kernel
Status - Unconfirmed
Assigned To - 
Operating System - All
Severity - Critical
Priority - Very Low
Reported Version - Trunk
Due in Version - Undecided
Due Date - Undecided
Details - 
x86/64
r2671-f922615

setup pppoe with rp-pppoe-server and devices will crash either the server or the client
it will not crash with my ISP pppoe server


[ 1714.848832] ------------[ cut here ]------------
[ 1714.849621] Kernel BUG at ffffffffa04ebc2c [verbose debug info unavailable]
[ 1714.850717] invalid opcode: 0000 [#1] SMP 
[ 1714.851853] Modules linked in: ath9k ath9k_htc ath9k_common rt2800usb rt2800lib pppoe ppp_async option iptable_nat brcmsmac ath9k_hw ath usb_wwan rt2x00usb rt2x00lib qmi_wwan pppox ppp_mppe ppp_generic nf_nat_ipv4 nf_conntrack_ipv6 nf_conntrack_ipv4 mac80211 ipt_REJECT ipt_MASQUERADE huawei_cdc_ncm cfg80211 cdc_ncm cdc_ether xt_time xt_tcpudp xt_tcpmss xt_string xt_statistic xt_state xt_recent xt_quota xt_pkttype xt_physdev xt_owner xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_hl xt_helper xt_hashlimit xt_ecn xt_dscp xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_addrtype xt_TCPMSS xt_REDIRECT xt_NETMAP xt_LOG xt_IPMARK xt_HL xt_DSCP xt_CT xt_CLASSIFY via_rhine usbserial usbnet usbhid ts_kmp ts_fsm ts_bm slhc rfcomm r8169 r8152 nf_reject_ipv4 nf_nat_redirect nf_nat_masquerade_ipv4 nf_nat nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache nf_conntrack_netlink lib80211_crypt_wep lib80211_crypt_tkip lib80211_crypt_ccmp lib80211 iptable_raw iptable_mangle iptable_filter ipt_ECN ip_tables ip6table_raw hidp hci_uart e1000e e100 crc8 crc_itu_t crc_ccitt cordic compat_xtables compat cdc_wdm btusb btintel brcmutil br_netfilter bnep bluetooth 8139too 8139cp act_connmark nf_conntrack act_skbedit act_mirred em_u32 cls_u32 cls_tcindex cls_flow cls_route cls_fw sch_hfsc sch_ingress evdev k10temp hwmon i2c_piix4 i2c_dev xt_set ip_set_list_set ip_set_hash_netiface ip_set_hash_netport ip_set_hash_netnet ip_set_hash_net ip_set_hash_netportnet ip_set_hash_mac 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 ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_common ip6table_mangle ip6table_filter ip6_tables x_tables ip_gre gre e1000 ifb ipip tunnel4 ip_tunnel tun vfat fat bcma nls_utf8 nls_iso8859_1 nls_cp437 regmap_spi regmap_mmio regmap_i2c i2c_core regmap_core lzo_decompress lzo_compress sha1_generic ecb cmac exfat button_hotplug ptp pps_core mii
[ 1714.885155] CPU: 1 PID: 11230 Comm: pppd Not tainted 4.4.39 #0
[ 1714.886092] Hardware name: VMware, Inc. VMware Virtual Platform/440BX Desktop Reference Platform, BIOS 6.00 05/20/2014
[ 1714.887888] task: ffff88003ba8a040 ti: ffff88003b880000 task.ti: ffff88003b880000
[ 1714.889131] RIP: 0010:[]  [] ppp_output_wakeup+0xb4c/0xeac [ppp_generic]
[ 1714.890753] RSP: 0018:ffff88003b883e58  EFLAGS: 00010246
[ 1714.891623] RAX: 0000000000000000 RBX: ffff88003b86ee00 RCX: 00000000006403a8
[ 1714.892736] RDX: 0000000000000000 RSI: 000000004004743a RDI: ffffffffa04ec9e0
[ 1714.893853] RBP: 00000000006403a8 R08: 0000000000000000 R09: 0000000000000000
[ 1714.894950] R10: 0000000000008802 R11: 0000000000000206 R12: 0000000000000000
[ 1714.896078] R13: ffff88003b86e100 R14: 00000000006403a8 R15: 0000000000000000
[ 1714.897297] FS:  00007fce166d8c48(0000) GS:ffff88003fd00000(0000) knlGS:0000000000000000
[ 1714.898620] CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
[ 1714.899486] CR2: 000000000063ef80 CR3: 000000003b90d000 CR4: 00000000001406e0
[ 1714.900680] Stack:
[ 1714.901023]  ffffffff810cc8ec 8000000039bdc065 0000000000000008 ffff88003c25b740
[ 1714.902295]  8000000000000065 ffff8800000001f0 0000000000000055 ffff88003b86ee00
[ 1714.903607]  00000000006403a8 ffff88003c64c750 000000004004743a 00000000006403a8
[ 1714.904916] Call Trace:
[ 1714.905321]  [] ? handle_mm_fault+0x9fc/0x1270
[ 1714.906270]  [] ? do_vfs_ioctl+0x299/0x470
[ 1714.907205]  [] ? __do_page_fault+0x14e/0x3a0
[ 1714.908156]  [] ? SyS_ioctl+0x32/0x60
[ 1714.909031]  [] ? entry_SYSCALL_64_fastpath+0x12/0x71
[ 1714.910056] Code: 44 89 e6 4c 89 ef e8 14 ca ff ff 48 85 c0 74 0e f0 ff 40 50 45 31 f6 48 89 83 c8 00 00 00 48 89 ef e8 39 e0 f5 e0 e9 62 f6 ff ff  0b 49 8d 9d 80 00 00 00 49 8d 6d 7c 48 89 df e8 0f f7 f5 e0 
[ 1714.914509] RIP  [] ppp_output_wakeup+0xb4c/0xeac [ppp_generic]
[ 1714.915749]  RSP 
[ 1714.916464] ---[ end trace 14c23a04fe795c7b ]---
[ 1714.917580] Kernel panic - not syncing: Fatal exception
[ 1714.918481] Kernel Offset: disabled
[ 1714.922733] Rebooting in 3 seconds..


More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=355