This bug is awaiting verification that the kernel in -proposed solves the problem. Please test the kernel and update this bug with the results. If the problem is solved, change the tag 'verification-needed- xenial' to 'verification-done-xenial'. If the problem still exists, change the tag 'verification-needed-xenial' to 'verification-failed- xenial'.
If verification is not done by 5 working days from today, this fix will be dropped from the source code, and this bug will be closed. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you! ** Tags added: verification-needed-xenial -- 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/1777850 Title: Redpine: Observed kernel panic while running soft-ap tests Status in linux package in Ubuntu: Fix Committed Status in linux source package in Xenial: Fix Committed Bug description: SRU Justification: ------------------ Impact: Kernel freezes/panic when running wireless tests for soft-ap Test case: 1. Create a soft-ap upon reboot. 2. Install Checkbox plano and : $ sudo snap install --devmode checkbox-plano 3. Run below wifi-ap test case $ checkbox-plano.checkbox-cli run .*device .*wireless/caracalla-wifi_ap_.*wlan0_auto 4. Upon 3-4 iteraions, observed kernel crash as below, [ 718.83244] BUG: unable to handle page request at 00000000001067e38 [ 718.83248] IP: cfg80211_scan_done+0xb0/0xc0 [cfg80211] [ 718.83971] __ieee80211_scan_completed+0xb1/0x390 [mac80211] [ 718.84078] ieee80211_scan_work+0x7e/0x480 [mac80211] [ 718.84098] process_one_work+0x142/0x3d0 [ 718.84111] worker_thread+0x229/0x440 [ 718.84122] kthread+0xf5/0x130 [ 718.84132] ? process_one_work+0x3d0/0x3d0 [ 718.84140] ? kthread_associate_blkcg+0x90/0x90 [ 718.84152] 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() in rsi_mac80211_stop(). Regression Petential: Ran Step 3 in 30-times. Didn't see any kernel panic. This bug is for tracking purposes only, please don't triage. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1777850/+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
