hpw wrote: > Hi, > > while using pppd with netfilter, I got following errors: skb_over_panic, > see following log: > > ****************** log starts ********************************* > Jan 1 00:01:25 ts7500 avahi-daemon[774]: Registering HINFO record with values 'ARMV4L'/'LINUX'. > Jan 1 00:01:26 ts7500 avahi-daemon[774]: Server startup complete. Host name is ts7500.local. Local service cookie is 2006778593. > Jan 1 00:01:29 ts7500 /usr/sbin/cron[823]: (CRON) INFO (pidfile fd = 3) > Jan 1 00:01:29 ts7500 /usr/sbin/cron[824]: (CRON) STARTUP (fork ok) > Jan 1 00:01:29 ts7500 /usr/sbin/cron[824]: (CRON) INFO (Running @reboot jobs) > Jan 1 00:02:08 ts7500 kernel: [ 128.040000] nf_conntrack version 0.5.0 (1024 buckets, 4096 max) > Jan 1 00:02:08 ts7500 kernel: [ 128.910000] ip_tables: (C) 2000-2006 Netfilter Core Team > Jan 1 00:02:27 ts7500 kernel: [ 147.480000] ohci_hcd: 2006 August 04 USB 1.1 'Open' Host Controller (OHCI) Driver > Jan 1 00:02:27 ts7500 kernel: [ 147.580000] str8100-ohci str8100-ohci: str8100-ohci > Jan 1 00:02:27 ts7500 kernel: [ 147.580000] str8100-ohci str8100-ohci: new USB bus registered, assigned bus number 2 > Jan 1 00:02:27 ts7500 kernel: [ 147.580000] str8100-ohci str8100-ohci: irq 23, io mem 0xc4000000 > Jan 1 00:02:27 ts7500 kernel: [ 147.660000] usb usb2: configuration #1 chosen from 1 choice > Jan 1 00:02:27 ts7500 kernel: [ 147.660000] hub 2-0:1.0: USB hub found > Jan 1 00:02:27 ts7500 kernel: [ 147.660000] hub 2-0:1.0: 2 ports detected > Jan 1 00:02:28 ts7500 kernel: [ 148.070000] usb 2-1: new full speed USB device using str8100-ohci and address 2 > Jan 1 00:02:28 ts7500 kernel: [ 148.250000] usb 2-1: configuration #1 chosen from 1 choice > Jan 1 00:02:28 ts7500 kernel: [ 148.730000] usbcore: registered new interface driver usbserial > Jan 1 00:02:28 ts7500 kernel: [ 148.730000] drivers/usb/serial/usb-serial.c: USB Serial support registered for generic > Jan 1 00:02:28 ts7500 kernel: [ 148.730000] usbcore: registered new interface driver usbserial_generic > Jan 1 00:02:28 ts7500 kernel: [ 148.730000] drivers/usb/serial/usb-serial.c: USB Serial Driver core > Jan 1 00:02:28 ts7500 kernel: [ 148.960000] drivers/usb/serial/usb-serial.c: USB Serial support registered for Sierra USB modem > Jan 1 00:02:28 ts7500 kernel: [ 148.960000] sierra 2-1:1.0: Sierra USB modem converter detected > Jan 1 00:02:29 ts7500 kernel: [ 148.990000] usb 2-1: Sierra USB modem converter now attached to ttyUSB0 > Jan 1 00:02:29 ts7500 kernel: [ 148.990000] usb 2-1: Sierra USB modem converter now attached to ttyUSB1 > Jan 1 00:02:29 ts7500 kernel: [ 148.990000] usb 2-1: Sierra USB modem converter now attached to ttyUSB2 > Jan 1 00:02:29 ts7500 kernel: [ 149.000000] usbcore: registered new interface driver sierra > Jan 1 00:02:29 ts7500 kernel: [ 149.000000] drivers/usb/serial/sierra.c: USB Driver for Sierra Wireless USB modems: v.1.3.2 > Jan 1 00:02:54 ts7500 kernel: [ 174.320000] PPP generic driver version 2.4.2 > Jan 1 00:02:54 ts7500 kernel: [ 174.470000] NET: Registered protocol family 24 > Jan 1 00:17:01 ts7500 /USR/SBIN/CRON[989]: (root) CMD ( cd / && run-parts --report /etc/cron.hourly) > Jan 1 00:25:50 ts7500 in.telnetd[993]: connect from 192.168.100.88 (192.168.100.88) > Jan 1 00:26:41 ts7500 pppd[1005]: pppd 2.4.4 started by root, uid 0 > Jan 1 00:26:42 ts7500 chat[1006]: abort on (NO DIAL TONE) > Jan 1 00:26:42 ts7500 chat[1006]: abort on (NO ANSWER) > Jan 1 00:26:42 ts7500 chat[1006]: abort on (NO CARRIER) > Jan 1 00:26:42 ts7500 chat[1006]: abort on (DELAYED) > Jan 1 00:26:42 ts7500 chat[1006]: send (AT^M) > Jan 1 00:26:42 ts7500 chat[1006]: expect (OK) > Jan 1 00:26:42 ts7500 chat[1006]: AT^M^M > Jan 1 00:26:42 ts7500 chat[1006]: OK > Jan 1 00:26:42 ts7500 chat[1006]: -- got it > Jan 1 00:26:42 ts7500 chat[1006]: send (ATZ^M) > Jan 1 00:26:42 ts7500 chat[1006]: expect (OK) > Jan 1 00:26:42 ts7500 chat[1006]: ^M > Jan 1 00:26:42 ts7500 chat[1006]: ATZ^M^M > Jan 1 00:26:42 ts7500 chat[1006]: OK > Jan 1 00:26:42 ts7500 chat[1006]: -- got it > Jan 1 00:26:42 ts7500 chat[1006]: send (ATDT#777^M) > Jan 1 00:26:42 ts7500 chat[1006]: expect (CONNECT) > Jan 1 00:26:42 ts7500 chat[1006]: ^M > Jan 1 00:26:43 ts7500 chat[1006]: ATDT#777^M^M > Jan 1 00:26:43 ts7500 chat[1006]: CONNECT > Jan 1 00:26:43 ts7500 chat[1006]: -- got it > Jan 1 00:26:43 ts7500 chat[1006]: send (^M) > Jan 1 00:26:43 ts7500 pppd[1005]: Serial connection established. > Jan 1 00:26:43 ts7500 pppd[1005]: using channel 1 > Jan 1 00:26:43 ts7500 pppd[1005]: Using interface ppp0 > Jan 1 00:26:44 ts7500 pppd[1005]: Connect: ppp0 <--> /dev/ttyUSB0 > Jan 1 00:26:45 ts7500 pppd[1005]: Warning - secret file /etc/ppp/pap-secrets has world and/or group access > Jan 1 00:26:45 ts7500 pppd[1005]: sent [LCP ConfReq id=0x1 <asyncmap 0x0> <magic 0xfde3b3>] > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] skb_over_panic: text:bf060890 len:18 put:18 head:c3d19800 data:c3d19800 tail:0xc3d19800 end:0xc3d19840 dev:<NULL> > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] Unable to handle kernel NULL pointer dereference at virtual address 00000000 > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] pgd = c37e0000 > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] [00000000] *pgd=037d5031, *pte=00000000, *ppte=00000000 > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] Internal error: Oops: 817 [#1] > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] Modules linked in: ppp_async crc_ccitt pppoe pppox ppp_generic slhc sierra usbserial ohci_hcd iptable_nat ip_tables nf_nat x_tables nf_conntrack_ipv4 nf_conntrack usb_storage ehci_hcd usbcore sd_mod scsi_mod > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] CPU: 0 Not tainted (2.6.24.4 #1) > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] pc : [<c0140bb4>] lr : [<00989680>] psr: 60000013 > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] sp : c37d9eec ip : c01f2a68 fp : c37d9f1c > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] r10: 00000000 r9 : fffffff2 r8 : 000569e6 > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] r7 : c3d19840 r6 : c3d19800 r5 : c3d19800 r4 : c3d19800 > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] r3 : 00000000 r2 : c01f2a74 r1 : c3dabeec r0 : 00000084 > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] Flags: nZCv IRQs on FIQs on Mode SVC_32 ISA ARM Segment user > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] Control: 0000397f Table: 037e0000 DAC: 00000015 > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] Process pppd (pid: 1005, stack limit = 0xc37d8258) > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] Stack: (0xc37d9eec to 0xc37da000) > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] 9ee0: c3d19800 c3d19800 c3d19800 c3d19840 c01d175c > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] 9f00: c3c30120 00000012 c3e7e1e0 c37d9f78 c37d9f50 c37d9f20 bf06089c c0140b70 > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] 9f20: 00000000 00000002 c3796260 000569e6 00000012 c37d9f78 00000000 c37d8000 > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] 9f40: 0000c227 c37d9f74 c37d9f54 c007db48 bf060804 00000000 c3796280 c3796260 > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] 9f60: c37d9f78 00000000 c37d9fa4 c37d9f78 c007dc7c c007da94 00000000 00000000 > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] 9f80: 00000000 00000012 000569e6 00000009 00000004 c0022f44 00000000 c37d9fa8 > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] 9fa0: c0022da0 c007dc40 00000012 000569e6 00000009 000569e6 00000012 000080fb > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] 9fc0: 00000012 000569e6 00000009 00000000 0003b7fc 0000c021 0000c227 00057120 > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] 9fe0: 00000000 bebb7c9c 0002a7dc 401602a4 60000010 00000009 30230200 0256cc0a > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] Backtrace: > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] Function entered at [<c0140b60>] from [<bf06089c>] > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] r7:c37d9f78 r6:c3e7e1e0 r5:00000012 r4:c3c30120 > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] Function entered at [<bf0607f4>] from [<c007db48>] > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] Function entered at [<c007da84>] from [<c007dc7c>] > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] r7:00000000 r6:c37d9f78 r5:c3796260 r4:c3796280 > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] Function entered at [<c007dc30>] from [<c0022da0>] > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] r8:c0022f44 r7:00000004 r6:00000009 r5:000569e6 r4:00000012 > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] Code: e88d00f0 e58dc010 ebfbf724 e3a03000 (e5833000) > Jan 1 00:26:45 ts7500 kernel: [ 1605.020000] ---[ end trace 362ce3347f1fdabb ]--- > > ****************** log ends ************************************ > > I am pretty sure it has to do with netfilter stuff, because if I remove > netfilter stuff from kernel and recompile it, pppd works fine. > > the kernel version is: 2.6.24.4, arm technology board. > > any advise is appreciated. You need to enable CONFIG_KALLSYMS or manually decode the addresses in the backtrace. -- To unsubscribe from this list: send the line "unsubscribe linux-ppp" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
