New: TC HTB hanging problem

http://bugzilla.kernel.org/show_bug.cgi?id=11249

           Summary: TC HTB hanging problem
           Product: Networking
           Version: 2.5
     KernelVersion: 2.6.23 and 2.6.25
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Other
        AssignedTo: [email protected]
        ReportedBy: [email protected]

Latest working kernel version:
Earliest failing kernel version: 2.6.23

Distribution: Mandriva 2007.1 and 2008.0

Hardware Environment:
It happens in many different servers

Software Environment:
Problem Description:
I have close to 200 servers, most with mandriva 2006.0 using kernel 2.6.15, some with mandriva 2008.0 using kernel 2.6.23 or 2.6.25. In some of them (kernels 2.6.23 and 2.6.25 confirmed) the server hangs at random (some servers hang more than once a day, some once a month).
The hardware is different from each other and i have about 5 servers with exactly the same configuration (proc, mem, ethernet, so one) and one hangs every day while the others are running fine, all with the same rules for traffic shapping (tc using htb).
I think that it is something related to tc because last week i accessed a server and when i type tc del to remove the shapping it hanged. My client restarted the server and about 10 minutes later i did it again with the same effect. No kernel panic, no oops, just hangs.
I've read some posts and bugs but i see something related to ethernet driver (like sk98lin), but it is happening with several servers with different hardwares.
I have some servers with kernel 2.6.15 and, as far as i know, it doesn't happen with them, but some of they use a different set of tc rules (a few less rules actually) or none at all.
I don't use the kernel shippied with mandriva distro, always got kernel from kernel.org and compilled myself.

Steps to reproduce:
Handly, since it is random, it takes minutes or weeks to happen, but always with some change in tc (start or stop).

http://bugzilla.kernel.org/show_bug.cgi?id=11249

           Summary: TC HTB hanging problem
           Product: Networking
           Version: 2.5
     KernelVersion: 2.6.23 and 2.6.25
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: high
          Priority: P1
         Component: Other
        AssignedTo: [email protected]
        ReportedBy: [email protected]

Latest working kernel version:
Earliest failing kernel version: 2.6.23

Distribution: Mandriva 2007.1 and 2008.0

Hardware Environment:
It happens in many different servers

Software Environment:
Problem Description:
I have close to 200 servers, most with mandriva 2006.0 using kernel

some with mandriva 2008.0 using kernel 2.6.23 or 2.6.25. In some of them (kernels 2.6.23 and 2.6.25 confirmed) the server hangs at random (some

hang more than once a day, some once a month).
The hardware is different from each other and i have about 5 servers with exactly the same configuration (proc, mem, ethernet, so one) and one hangs every day while the others are running fine, all with the same rules for traffic shapping (tc using htb).
I think that it is something related to tc because last week i accessed a server and when i type tc del to remove the shapping it hanged. My client restarted the server and about 10 minutes later i did it again with the

effect. No kernel panic, no oops, just hangs.
I've read some posts and bugs but i see something related to ethernet

(like sk98lin), but it is happening with several servers with different hardwares.
I have some servers with kernel 2.6.15 and, as far as i know, it doesn't

with them, but some of they use a different set of tc rules (a few less

actually) or none at all.
I don't use the kernel shippied with mandriva distro, always got kernel

kernel.org and compilled myself.

Steps to reproduce:
Handly, since it is random, it takes minutes or weeks to happen, but

with some change in tc (start or stop).

Just to add, 2 weeks ago one of my clients had to reboot the server 3 times during the day, so I disabled the qos and it worked fine for 3 days. After this days I started the qos again and 10 hours later the server hanged again, so it's disabled until now without hanging.

Just to add, 2 weeks ago one of my clients had to reboot the server 3

during the day, so I disabled the qos and it worked fine for 3 days. After this days I started the qos again and 10 hours later the server hanged again, so it's disabled until now without hanging.

Just to add, 2 weeks ago one of my clients had to reboot the server 3

during the day, so I disabled the qos and it worked fine for 3 days. After this days I started the qos again and 10 hours later the server hanged again, so it's disabled until now without hanging.

Hello Jarek!

Many thanks for your response! Are these two patches already included in 2.6.26 version?

Thanks a lot again,

Hello Jarek!

Many thanks for your response! Are these two patches already included in 2.6.26 version?

Thanks a lot again,

Hi Jarek!

Some clients of mine are using the 2.6.26 version without a problem for 1 week now, and some of them used to hang every day, i guess it's solved. thanks a lot for the advice!