Seems to be fixed in 4.4.0-187
** Changed in: linux (Ubuntu)
Status: Confirmed => Fix Released
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https://bugs.launchpad.net/bugs/1883597
Title:
Kernel 4.4.0-184
Bug present in 4.4.0-186.
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Title:
Kernel 4.4.0-184 hangs when issuing tc qdisc command
Status in linux package in Ubuntu:
Bug present in 4.4.0-185 also.
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Title:
Kernel 4.4.0-184 hangs when issuing tc qdisc command
Status in linux package in Ubuntu:
apport information
** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1883597/+attachment/5384167/+files/ProcModules.txt
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apport information
** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/1883597/+attachment/5384171/+files/CurrentDmesg.txt
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apport information
** Attachment added: "ProcCpuinfo.txt"
https://bugs.launchpad.net/bugs/1883597/+attachment/5384173/+files/ProcCpuinfo.txt
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apport information
** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1883597/+attachment/5384166/+files/ProcInterrupts.txt
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apport information
** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/1883597/+attachment/5384179/+files/WifiSyslog.txt
** Changed in: linux (Ubuntu)
Status: Incomplete => Confirmed
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apport information
** Attachment added: "ProcModules.txt"
https://bugs.launchpad.net/bugs/1883597/+attachment/5384177/+files/ProcModules.txt
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apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1883597/+attachment/5384172/+files/Lspci.txt
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apport information
** Attachment added: "WifiSyslog.txt"
https://bugs.launchpad.net/bugs/1883597/+attachment/5384169/+files/WifiSyslog.txt
** Description changed:
On stock kernel 4.4.0.184-214, issuing "tc qdisc add dev eth0 root fq maxrate
25mbit" causes CPU lockup
(NMI watchdog: BUG:
apport information
** Attachment added: "Lspci.txt"
https://bugs.launchpad.net/bugs/1883597/+attachment/5384163/+files/Lspci.txt
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https://bugs.launchpad.net/bugs/1883597
apport information
** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1883597/+attachment/5384178/+files/UdevDb.txt
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apport information
** Attachment added: "UdevDb.txt"
https://bugs.launchpad.net/bugs/1883597/+attachment/5384168/+files/UdevDb.txt
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apport information
** Attachment added: "ProcInterrupts.txt"
https://bugs.launchpad.net/bugs/1883597/+attachment/5384176/+files/ProcInterrupts.txt
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apport information
** Tags added: apport-collected xenial
** Description changed:
On stock kernel 4.4.0.184-214, issuing "tc qdisc add dev eth0 root fq maxrate
25mbit" causes CPU lockup
(NMI watchdog: BUG: soft lockup - CPU#26 stuck for 22s! [tc:6394])
This does not occur on 4.4.0.179
Public bug reported:
On stock kernel 4.4.0.184-214, issuing "tc qdisc add dev eth0 root fq maxrate
25mbit" causes CPU lockup
(NMI watchdog: BUG: soft lockup - CPU#26 stuck for 22s! [tc:6394])
This does not occur on 4.4.0.179 or earlier.
Happens on both a intel i40e driver and ixgbe.
**
** Attachment added: "version.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1883597/+attachment/5384148/+files/version.log
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** Attachment added: "lspci-vnvn.log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1883597/+attachment/5384149/+files/lspci-vnvn.log
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apport information
** Attachment added: "ProcCpuinfoMinimal.txt"
https://bugs.launchpad.net/bugs/1883597/+attachment/5384174/+files/ProcCpuinfoMinimal.txt
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apport information
** Attachment added: "ProcCpuinfo.txt"
https://bugs.launchpad.net/bugs/1883597/+attachment/5384164/+files/ProcCpuinfo.txt
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apport information
** Attachment added: "CRDA.txt"
https://bugs.launchpad.net/bugs/1883597/+attachment/5384170/+files/CRDA.txt
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https://bugs.launchpad.net/bugs/1883597
apport information
** Attachment added: "ProcCpuinfoMinimal.txt"
https://bugs.launchpad.net/bugs/1883597/+attachment/5384165/+files/ProcCpuinfoMinimal.txt
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apport information
** Attachment added: "CurrentDmesg.txt"
https://bugs.launchpad.net/bugs/1883597/+attachment/5384162/+files/CurrentDmesg.txt
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