This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1773410
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1773410
Title:
Redpine: Observed kernel panic while when running wireless tests in
regression mode
Status in linux package in Ubuntu:
Incomplete
Bug description:
SRU Justification
-----------------
Impact:
Kernel freezes/panic when running wireless tests in regression
Test case:
1. Keep a wrong access-point name in sta.conf file and run the nmcli.
2. There will be continuous scan will be happen and do remove the module
using rmmod.sh script.
3. When soft scan is happening in redpine driver, before connection. Some
times, we have observed
a kernel panic. like below
[ 1171.913244] BUG: unable to handle page request at 00000000001067e38
[ 1171.913248] IP: cfg80211_scan_done+0xb0/0xc0 [cfg80211]
[ 1171.913971] __ieee80211_scan_completed+0xb1/0x390 [mac80211]
[ 1171.914078] ieee80211_scan_work+0x7e/0x480 [mac80211]
[ 1171.914098] process_one_work+0x142/0x3d0
[ 1171.914111] worker_thread+0x229/0x440
[ 1171.914122] kthread+0xf5/0x130
[ 1171.914132] ? process_one_work+0x3d0/0x3d0
[ 1171.914140] ? kthread_associate_blkcg+0x90/0x90
[ 1171.914152] ret_from_fork+0x35/0x40
Fix:
scan work function keeps running even after cancel_hw_scan() call.
Issue is resolved by calling cancel_work_sync().
Regression potential:
Ran driver_crash.sh for 100 times and didn't see the issue.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1773410/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
