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Date: Thu, 30 Aug 2007 00:16:32 +0400 From: slavon@...telecom.ru To: Jarek Poplawski <jarkao2@...pl> Cc: netdev@...r.kernel.org Subject: Re: Tc bug (kernel crash) more info Quoting Jarek Poplawski <jarkao2@...pl>: > On Wed, Aug 29, 2007 at 04:53:52PM +0400, Badalian Vyacheslav wrote: > ... >> we have this kernel panic (then delete HTB) at all 2.6.18-x versions. >> on older kernel (2.6.x) we have another panic (then delete tc filter)... >> summary we have TC panics 1 year ago ;) Sysctl option "reboot on panic" > > I'm not sure: do you mean it was less often? Did you try to report it > here? (Delete HTB: qdisc or classes?) > i was can't catch bug. now i have configured netconsole to catch panics. for every clinet run command like: ### command to recreate HTB tc filter del dev eth1 protocol ip parent 1:0 prio 5 handle 4:9:a1 u32 tc filter del dev eth0 protocol ip parent 1:0 prio 5 handle 4:9:a1 u32 tc class del dev eth1 parent 1:6 classid 1:1c tc class del dev eth0 parent 1:6 classid 1:1c tc class del dev eth1 parent 1:8 classid 1:1c tc class del dev eth0 parent 1:8 classid 1:1c tc class add dev eth1 parent 1:8 classid 1:1c htb rate 1kbit ceil 5000kbit burst 1b cburst 625b quantum 1500 tc qdisc add dev eth1 parent 1:1c handle 28 sfq perturb 10 tc class add dev eth0 parent 1:8 classid 1:1c htb rate 1kbit ceil 5000kbit burst 1b cburst 625b quantum 1500 tc qdisc add dev eth0 parent 1:1c handle 28 sfq perturb 10 tc filter add dev eth1 protocol ip parent 1:0 prio 5 handle 8:73:6 u32 ht 8:73: match ip dst 87.255.6.115 flowid 1:1c tc filter add dev eth0 protocol ip parent 1:0 prio 5 handle 8:73:6 u32 ht 8:73: match ip src 87.255.6.115 flowid 1:1c tc filter add dev eth1 protocol ip parent 1:0 prio 5 handle 4:9:a1 u32 ht 4:9: match ip dst 172.16.161.9 flowid 1:1c tc filter add dev eth0 protocol ip parent 1:0 prio 5 handle 4:9:a1 u32 ht 4:9: match ip src 172.16.161.9 flowid 1:1c ### i try delete class "parent 1:6" and "parent 1:8" because i not know what parent was. (limited speed class 1:6 or unlimited speed class 1:8) if i delete class - qdisc delete automatic. if computer not have traffic - all normal (test system work 3 week). if we have lot of traffic system have 1-5 kernel panics at week. >> save us. Now we up 2 backup computers and may try any patches to fix >> this problem. >> >> Also on 2.6.22 have strange dead. Black screen, no response to keyboard, >> no info in netconsole, HardDisk led is stable red. "Black Dead" >> > > Yes, with all black it could be harder... Maybe 'set -x' at the > beginning (after #!/bin/sh line) of a script could manage to save > something before reboot or send with netconsole (but there could be > a lot of this with a large script...). Netconsole could be troublesome > too. One HTB deadlock problem during similar deleting was fixed in > 2.6.23-rc (HTB timer problem) but the log was different. Anyway, > we probably need some more information (and trying). In my desktop system i have "Black dead" (2.6.22-r5) All freeze (on monitor KDE desctop. mouse, keyboard, network and other not work. HDD led is on. No panics.) Say that info you need. I will try get it. PS. And also have we have strange bug in another computer (2.6.22-r5). Have computer XEON_CPUx2 (4 CPU) after boot have CPU0 and CPU3 SI = ~50% after some time CPU0 SI = 0% and ksoftirqd/2 process have 100% cpu usage! nat-new ~ # cat /proc/interrupts CPU0 CPU1 CPU2 CPU3 0: 403 0 0 0 IO-APIC-edge timer 1: 448 0 0 0 IO-APIC-edge i8042 6: 3 0 0 0 IO-APIC-edge floppy 8: 3 0 0 0 IO-APIC-edge rtc 9: 18 0 0 0 IO-APIC-fasteoi acpi 12: 4 0 0 0 IO-APIC-edge i8042 16: 100838998 0 656832858 0 IO-APIC-fasteoi eth0 17: 756133415 0 124233955 1 IO-APIC-fasteoi eth1 18: 0 0 0 0 IO-APIC-fasteoi uhci_hcd:usb1 19: 27167 0 0 0 IO-APIC-fasteoi gdth 20: 0 0 0 0 IO-APIC-fasteoi uhci_hcd:usb2 NMI: 0 0 0 0 LOC: 89312505 89314019 89310139 89313972 ERR: 0 MIS: 0 changes only LOC interrupts! Maybe its info intresting for you. =) Best regals. ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program. - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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