From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.2a) Gecko/20020910 Description of problem: <the usual panic, I can write more details if needed> INIT: version 2.78 reloading isdn_ppp_xmit: lp->ppp_slot -1 ---- cut here ----- Kernel BUG at sched.c: 739! invalid operand 0000 ipchains hisax isdn slhc 8139too mii appletalkipx ipv6 ext3 jbd CPU: 0 EIP: 0010:[<c0114fa9>] Not tainted EFLAGS: 00010096 EIP is at schedule [kernel] 0x29 (2.4.18-5) ... Process ping (pid: 13265, stackpage=c274500) Stack: ... Call Trace [<c0108a15>] reschedule [kernel] 0x5 Code: 0f 0b 5a 59 b8 00 e0 ff ff 21 e0 89 c2 be 00 bb 32 c0 c7 45 <0> Kernel panic: Aiee, killing interrupt handler! In interrupt handler - not syncing </the usual panic> ---<lots of data>--- # uname -a Linux nalle 2.4.18-5 #1 Mon Jun 10 15:14:29 EDT 2002 i586 unknown # cat /etc/redhat-release Red Hat Linux release 7.1 (Seawolf) # /sbin/lsmod Module Size Used by Not tainted ipchains 42952 70 hisax 547172 3 isdn 132448 3 [hisax] slhc 6540 2 [isdn] 8139too 16544 1 mii 2344 0 [8139too] appletalk 24236 0 (autoclean) ipx 20180 0 (autoclean) ipv6 154144 -1 ext3 67392 1 (autoclean) jbd 48888 1 (autoclean) [ext3] # cat /proc/pci PCI devices found: Bus 0, device 0, function 0: Host bridge: Intel Corp. 430VX - 82437VX TVX [Triton VX] (rev 2). Master Capable. Latency=32. Bus 0, device 7, function 0: ISA bridge: Intel Corp. 82371SB PIIX3 ISA [Natoma/Triton II] (rev 1). Bus 0, device 7, function 1: IDE interface: Intel Corp. 82371SB PIIX3 IDE [Natoma/Triton II] (rev 0). Master Capable. Latency=32. I/O at 0x9000 [0x900f]. Bus 0, device 8, function 0: VGA compatible controller: S3 Inc. ViRGE/DX or /GX (rev 1). Master Capable. Latency=32. Min Gnt=4.Max Lat=255. Non-prefetchable 32 bit memory at 0xe0000000 [0xe3ffffff]. Bus 0, device 9, function 0: Ethernet controller: Realtek Semiconductor Co., Ltd. RTL-8139/8139C (rev 16). IRQ 11. Master Capable. Latency=32. Min Gnt=32.Max Lat=64. I/O at 0x6100 [0x61ff]. Non-prefetchable 32 bit memory at 0xe4000000 [0xe40000ff]. Bus 0, device 11, function 0: Network controller: PCI device 1050:6692 (Winbond Electronics Corp) (rev 255). IRQ 9. Prefetchable 32 bit memory at 0xe4001000 [0xe4001fff]. I/O at 0x6200 [0x62ff]. # isdnctrl list ippp0 Current setup of interface 'ippp0': EAZ/MSN: 5424023 Phone number(s): Outgoing: 328500 Incoming: Dial mode: manual Secure: off Callback: off Reject before Callback: on Callback-delay: 3 Dialmax: 1 Hangup-Timeout: 0 Incoming-Hangup: on ChargeHangup: off Charge-Units: 0 Charge-Interval: 0 Layer-2-Protocol: hdlc Layer-3-Protocol: trans Encapsulation: syncppp Slave Interface: ippp1 Slave delay: 10 Slave trigger: 6000 cps Master Interface: None Pre-Bound to: Nothing PPP-Bound to: 0 # isdnctrl list ippp1 Current setup of interface 'ippp1': EAZ/MSN: 5424023 Phone number(s): Outgoing: 328500 Incoming: Dial mode: auto Secure: off Callback: off Reject before Callback: on Callback-delay: 5 Dialmax: 1 Hangup-Timeout: 0 Incoming-Hangup: on ChargeHangup: off Charge-Units: 0 Charge-Interval: 0 Layer-2-Protocol: hdlc Layer-3-Protocol: trans Encapsulation: syncppp Slave Interface: None Slave delay: 10 Slave trigger: 6000 cps Master Interface: ippp0 Pre-Bound to: Nothing PPP-Bound to: Nothing # less /var/log/messages <snip> ... Oct 8 09:59:56 nalle kernel: ippp0: remote hangup Oct 8 09:59:56 nalle kernel: ippp0: Chargesum is 0 Oct 8 09:59:56 nalle kernel: ippp1: remote hangup Oct 8 09:59:56 nalle kernel: ippp1: Chargesum is 0 Oct 8 10:44:20 nalle kernel: ippp0: dialing 1 328500... Oct 8 10:44:22 nalle kernel: isdn_net: ippp0 connected Oct 8 10:44:26 nalle kernel: ippp1: dialing 1 328500... Oct 8 10:44:26 nalle kernel: isdn_net: ippp1 connected Oct 8 10:44:27 nalle modprobe: modprobe: Can't locate module ippp1 ... <Here's the reason for Aieee, panic> Oct 8 13:15:04 nalle kernel: ippp1: remote hangup Oct 8 13:15:04 nalle kernel: ippp1: Chargesum is 0 <And after the restart> Oct 8 17:14:01 nalle syslogd 1.4-0: restart. Oct 8 17:14:01 nalle syslog: syslogd startup succeeded Oct 8 17:14:07 nalle kernel: ISDN subsystem Rev: 1.1.4.1/1.1.4.1/1.1.4.1/1.1.4.1/1.1.4.1/1.1.4.1 loaded Oct 8 17:14:07 nalle kernel: HiSax: Linux Driver for passive ISDN cards Oct 8 17:14:07 nalle kernel: HiSax: Version 3.5 (module) Oct 8 17:14:07 nalle kernel: HiSax: Layer1 Revision 1.1.4.1 Oct 8 17:14:07 nalle kernel: HiSax: Layer2 Revision 1.1.4.1 Oct 8 17:14:07 nalle kernel: HiSax: TeiMgr Revision 1.1.4.1 Oct 8 17:14:07 nalle kernel: HiSax: Layer3 Revision 1.1.4.1 Oct 8 17:14:07 nalle kernel: HiSax: LinkLayer Revision 1.1.4.1 Oct 8 17:14:07 nalle kernel: HiSax: Approval certification failed because of Oct 8 17:14:07 nalle kernel: HiSax: unauthorized source code changes Oct 8 17:14:07 nalle kernel: HiSax: Card 1 Protocol EDSS1 Id=HiSax (0) Oct 8 17:14:07 nalle kernel: HiSax: W6692 driver Rev. 1.1.4.1 Oct 8 17:14:08 nalle kernel: Found: Winbond W6692, I/O base: 0x6200, irq: 9 Oct 8 17:14:08 nalle kernel: HiSax: W6692 config irq:9 I/O:6200 Oct 8 17:14:08 nalle kernel: W6692: Winbond W6692 version (0): W6692 V00 Oct 8 17:14:08 nalle kernel: W6692 ISTA=0x0 Oct 8 17:14:08 nalle kernel: W6692 IMASK=0xFF Oct 8 17:14:08 nalle kernel: W6692 D_EXIR=0x0 Oct 8 17:14:08 nalle kernel: W6692 D_EXIM=0xFF Oct 8 17:14:08 nalle kernel: W6692 D_RSTA=0xA0 Oct 8 17:14:08 nalle kernel: Winbond 6692: IRQ 9 count 0 Oct 8 17:14:08 nalle kernel: Winbond 6692: IRQ 9 count 5 Oct 8 17:14:08 nalle kernel: HiSax: DSS1 Rev. 1.1.4.1 Oct 8 17:14:08 nalle kernel: HiSax: 2 channels added Oct 8 17:14:08 nalle kernel: HiSax: MAX_WAITING_CALLS added ... Oct 8 17:14:09 nalle kernel: device ippp0 entered promiscuous mode Oct 8 17:14:09 nalle kernel: ip_conntrack (320 buckets, 2560 max) Oct 8 17:14:14 nalle snort[790]: Snort initialization completed successfully, Snort running Oct 8 17:14:17 nalle ipchains: Applying ipchains firewall rules succeeded Oct 8 17:14:18 nalle crond: crond startup succeeded Oct 8 17:14:18 nalle rhnsd: rhnsd startup succeeded Oct 8 17:14:19 nalle rhnsd[1317]: Red Hat Network Services Daemon starting up. Oct 8 17:14:20 nalle linuxconf: Running Linuxconf hooks: succeeded Oct 8 17:14:20 nalle kernel: ippp0: dialing 1 328500... Oct 8 17:14:20 nalle kernel: ippp1: dialing 1 328500... Oct 8 17:14:21 nalle kernel: isdn_net: ippp0 connected Oct 8 17:14:21 nalle kernel: isdn_net: ippp1 connected Oct 8 17:14:21 nalle modprobe: modprobe: Can't locate module ippp1 </snip> Version-Release number of selected component (if applicable): How reproducible: Didn't try Steps to Reproduce: 1. start the isdn connection: isdnctrl dial ippp0;sleep 5;isdnctrl dial ippp1 2. wait until the ISP hangs up due to idle timeout or something 3. if the ISP hangs ippp0 before ippp1, panic will come when sending something Actual Results: My ISDN Internet gateway (originally RH 7.1, now upgraded party to 7.3) has not seen better uptimes than 50 days in the last 13 months. So Expected Results: Eh, kernel should not panic. Additional info: If I could figure out howto trigger the ISDN HiSax module to receive a remote hang up, this could be debugged further. I've tried every RH kernel since 7.1 and even vanilla 2.4.18 and 2.2.20. They all panic when my mean ISP hangs up. The finnish Linux newsgroup people said (http://groups.google.com/groups?hl=en&lr=&ie=UTF-8&oe=UTF-8&threadm=Pine.SOL.4.44.0203221916180.12279-100000%40stekt57&rnum=1&prev=/groups%3Fq%3Dlinux%2Bisdn%2Bkernel%2Bpanic%26hl%3Den%26lr%3D%26ie%3DUTF-8%26oe%3DUTF-8%26selm%3DPine.SOL.4.44.0203221916180.12279-100000%2540stekt57%26rnum%3D1), that the problem lies in the MPPP module of the kernel.
Asked Karsten Keil <kkeil> about the issue and 2.4.20pre has the fix. http://www.kernel.org/pub/linux/kernel/v2.4/testing/patch-2.4.20.log <snip> Kai Germaschewski <kai.de>: o Add support for ISDN card Eicon Diva 2.02 o Move PCI device id to include/linux/pci_ids.h o Add support for ISDN card Formula-n enter:now, a.k.a. Gerdes Power ISDN o Add in-kernel ISAPnP support to HiSax driven ISDN cards o Doc changes / Cleanup for ISDN ISAPnP changes o ISDN MPPP crash fix </snip> At least I'll try the 2.4.20pre... -Mikko