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Opened 17 months ago

#24785 new defect

Mt7621: Random reboot + Kernel panic - not syncing: Fatal exception in interrupt

Reported by: pparent Owned by: developers
Priority: high Milestone:
Component: kernel Version: Trunk
Keywords: Cc:

Description

This was tested on trunk today, on a ZBT wg3526 with a mt7621 processor.

[ 1539.240000] Oops[#1]:
[ 1539.240000] CPU: 0 PID: 3 Comm: ksoftirqd/0 Tainted: G        W       4.4.14 #1
[ 1539.240000] task: 8f840af0 ti: 8f852000 task.ti: 8f852000
[ 1539.240000] $ 0   : 00000000 00000000 00004000 00004000
[ 1539.240000] $ 4   : 80476880 02090220 81492150 8ea07b40
[ 1539.240000] $ 8   : 0002c886 00000001 00000001 8ea07240
[ 1539.240000] $12   : 00000000 8ea07240 00000000 00000000
[ 1539.240000] $16   : 00000000 8f802d80 02090220 8028bd58
[ 1539.240000] $20   : 00000240 8ed329dc 00000104 00000985
[ 1539.240000] $24   : 00000000 00000000                  
[ 1539.240000] $28   : 8f852000 8f853b30 8e86a040 800cdee0
[ 1539.240000] Hi    : 00000018
[ 1539.240000] Lo    : 00000060
[ 1539.240000] epc   : 800cdf5c __kmalloc_track_caller+0x134/0x210
[ 1539.240000] ra    : 800cdee0 __kmalloc_track_caller+0xb8/0x210
[ 1539.240000] Status: 11000403	KERNEL EXL IE 
[ 1539.240000] Cause : 40800008 (ExcCode 02)
[ 1539.240000] BadVA : 00004000
[ 1539.240000] PrId  : 0001992f (MIPS 1004Kc)
[ 1539.240000] Modules linked in: pppoe ppp_async iptable_nat pppox ppp_generic nf_nat_ipv4 nf_conntrack_ipv6 nf_conntrack_ipv4 ipt_REJECT ipt_MASQUERADE xt_time xt_tcpudp xt_tcpmss xt_statistic xt_state xt_recent xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_id xt_hl xt_helper xt_ecn xt_dscp xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS xt_REDIRECT xt_LOG xt_HL xt_DSCP xt_CT xt_CLASSIFY slhc nf_reject_ipv4 nf_nat_redirect nf_nat_masquerade_ipv4 nf_nat nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache iptable_raw iptable_mangle iptable_filter ipt_ECN ip_tables crc_ccitt act_connmark nf_conntrack act_skbedit act_mirred em_u32 cls_u32 cls_tcindex cls_flow cls_route cls_fw sch_hfsc sch_ingress mt7603e mt76x2e mt76 mac80211 cfg80211 compat ledtrig_usbdev ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_common ip6table_raw ip6table_mangle ip6table_filter ip6_tables x_tables ifb tun leds_gpio xhci_mtk xhci_plat_hcd xhci_pci xhci_hcd gpio_button_hotplug usbcore nls_base usb_common
[ 1539.240000] Process ksoftirqd/0 (pid: 3, threadinfo=8f852000, task=8f840af0, tls=00000000)
[ 1539.240000] Stack : 811dbf00 8f802380 81023b60 8002bec4 8ea07240 02080020 8f853b8f 8028bc6c
	  00000000 dc8ba60e 8efa9c00 8efa9c00 8ea07240 02080020 00000197 8f802380
	  00000000 8028bd58 8ed329dc 802cba64 00000040 00000000 8e88aa14 8ea070c0
	  8f853cfc 8f1fb440 8eccc160 8eccc05c 8ea2e180 8ed0e178 81000000 8009c174
	  ffffffc7 00000002 00000000 0000003b 8f853cfc 00000178 8f1fb440 00000001
	  ...
[ 1539.240000] Call Trace:
[ 1539.240000] [<800cdf5c>] __kmalloc_track_caller+0x134/0x210
[ 1539.240000] [<8028bc6c>] __kmalloc_reserve.isra.4+0x40/0xa4
[ 1539.240000] [<8028bd58>] __alloc_skb+0x88/0x184
[ 1539.240000] [<8ed0e178>] cfg80211_report_obss_beacon+0x8c/0x210 [cfg80211]
[ 1539.240000] [<8eda2298>] ieee80211_sta_uapsd_trigger+0x21c8/0x2c74 [mac80211]
[ 1539.240000] 
[ 1539.240000] 
Code: 32528000  8e230014  00431821 <8c670000> 41696000  31290001  000000c0  8f86000c  00005021 
[ 1539.500000] ---[ end trace 17bf161707a5a28e ]---
[ 1539.500000] Kernel bug detected[#2]:
[ 1539.500000] CPU: 3 PID: 2808 Comm: hostapd Tainted: G      D W       4.4.14 #1
[ 1539.500000] task: 8f8ff2d8 ti: 8e90a000 task.ti: 8e90a000
[ 1539.500000] $ 0   : 00000000 7fbb1194 81023b60 00000001
[ 1539.500000] $ 4   : 00000000 81023b73 80470000 811dbf00
[ 1539.500000] $ 8   : 32762048 008fd164 1001004a 01004410
[ 1539.500000] $12   : 00111002 8e90bddc 00000000 76694c0f
[ 1539.500000] $16   : 8ea076c0 8ea076c0 8e90beec 00000000
[ 1539.500000] $20   : 8e90bd8c 00000144 8f4814a0 8f4814a0
[ 1539.500000] $24   : 00000000 802c9104                  
[ 1539.500000] $28   : 8e90a000 8e90bd30 00000000 8028c874
[ 1539.500000] Hi    : 000001bf
[ 1539.500000] Lo    : 0007a92c
[ 1539.500000] epc   : 800cc174 kfree+0x68/0x1ac
[ 1539.500000] ra    : 8028c874 __kfree_skb+0x28/0xb0
[ 1539.500000] Status: 1100fc03	KERNEL EXL IE 
[ 1539.500000] Cause : 50800034 (ExcCode 0d)
[ 1539.500000] PrId  : 0001992f (MIPS 1004Kc)
[ 1539.500000] Modules linked in: pppoe ppp_async iptable_nat pppox ppp_generic nf_nat_ipv4 nf_conntrack_ipv6 nf_conntrack_ipv4 ipt_REJECT ipt_MASQUERADE xt_time xt_tcpudp xt_tcpmss xt_statistic xt_state xt_recent xt_nat xt_multiport xt_mark xt_mac xt_limit xt_length xt_id xt_hl xt_helper xt_ecn xt_dscp xt_conntrack xt_connmark xt_connlimit xt_connbytes xt_comment xt_TCPMSS xt_REDIRECT xt_LOG xt_HL xt_DSCP xt_CT xt_CLASSIFY slhc nf_reject_ipv4 nf_nat_redirect nf_nat_masquerade_ipv4 nf_nat nf_log_ipv4 nf_defrag_ipv6 nf_defrag_ipv4 nf_conntrack_rtcache iptable_raw iptable_mangle iptable_filter ipt_ECN ip_tables crc_ccitt act_connmark nf_conntrack act_skbedit act_mirred em_u32 cls_u32 cls_tcindex cls_flow cls_route cls_fw sch_hfsc sch_ingress mt7603e mt76x2e mt76 mac80211 cfg80211 compat ledtrig_usbdev ip6t_REJECT nf_reject_ipv6 nf_log_ipv6 nf_log_common ip6table_raw ip6table_mangle ip6table_filter ip6_tables x_tables ifb tun leds_gpio xhci_mtk xhci_plat_hcd xhci_pci xhci_hcd gpio_button_hotplug usbcore nls_base usb_common
[ 1539.500000] Process hostapd (pid: 2808, threadinfo=8e90a000, task=8f8ff2d8, tls=77d6ce50)
[ 1539.500000] Stack : 00000000 802905fc 8efa9c00 8ea076c0 8efa9c00 80290644 00004000 00000144
[ 1539.500000] 	  8f4814a0 8f4814a0 8efa9c00 802c92b8 00000000 14f6a380 00004000 8e90bd74
[ 1539.500000] 	  00000000 8e90bddc 00000004 00000000 00000001 8e90beec 8e90bdd8 00000000
[ 1539.500000] 	  00000000 00000000 00000000 00000000 8e90beec 00000000 00000040 80470000
[ 1539.500000] 	  7fbb1194 8e90be1c 00000000 8028362c 8e90bdd8 8e90bddc 0018c7a8 00000000
[ 1539.500000] 	  ...
[ 1539.500000] Call Trace:
[ 1539.500000] [<800cc174>] kfree+0x68/0x1ac
[ 1539.500000] [<8028c874>] __kfree_skb+0x28/0xb0
[ 1539.500000] [<80290644>] skb_free_datagram+0x18/0x54
[ 1539.500000] [<802c92b8>] netlink_recvmsg+0x1b4/0x360
[ 1539.500000] [<8028362c>] ___sys_recvmsg+0xc4/0x16c
[ 1539.500000] [<802845cc>] __sys_recvmsg+0x48/0x7c
[ 1539.500000] [<800077a8>] syscall_common+0x30/0x54
[ 1539.500000] 
[ 1539.500000] 
[ 1539.500000] Code: 8c430014  30630001  38630001 <00030336> 8c430000  7c630380  10600002  00002821  9445003a 
[ 1539.500000] ---[ end trace 17bf161707a5a28f ]---
[ 1539.240000] -[ 1539.790000] Kernel panic - not syncing: Fatal exception in interrupt
[ 1539.790000] Rebooting in 3 seconds..



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