@Ganapathi, Please add logs to the bug and Kernel version that you have verified.
-- 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/1813869 Title: Redpine: Driver crash with network-manager 1.10 and above Status in linux package in Ubuntu: Incomplete Status in linux source package in Xenial: Fix Committed Bug description: SRU Justification: ------------------ Impact: ------- Kernel crash upon inserting Redpine driver Test case: ---------- 1) Install network-manager v(1.10) snap. 2) Insert Redpine modules. 3) Observe the behavior. Result: ------- Redpine driver crashes the entire kernel and below is the crash log. ... skipping ... [ 49.130185] BUG: unable to handle kernel NULL pointer dereference at 0000000000000134 [ 49.138969] IP: [<ffffffffc0517c03>] rsi_prepare_mgmt_desc+0xd3/0x2d0 [ven_rsi_91x] [ 49.244030] CPU: 0 PID: 31 Comm: kworker/u4:1 Not tainted 4.4.0-139-generic #165-Ubuntu [ 49.252988] Hardware name: Dell Inc. Edge Gateway 3001/, BIOS 01.00.00 04/17/2017 [ 49.261374] Workqueue: rsi_scan_worker rsi_scan_start [ven_rsi_91x] [ 49.268385] task: ffff880078538cc0 ti: ffff8800785e4000 task.ti: ffff8800785e4000 [ 49.276765] rsi_prepare_mgmt_desc+0xd3/0x2d0 [ven_rsi_91x] [ 49.387307] [<ffffffffc0516457>] rsi_send_probe_request+0x2c7/0x350 [ven_rsi_91x] [ 49.395784] [<ffffffffc0516702>] rsi_scan_start+0x222/0x380 [ven_rsi_91x] [ 49.403486] [<ffffffff818530c1>] ? __schedule+0x301/0x7f0 [ 49.409633] [<ffffffff8109ee4b>] process_one_work+0x16b/0x490 [ 49.416164] [<ffffffff8109f1bb>] worker_thread+0x4b/0x4d0 [ 49.422306] [<ffffffff8109f170>] ? process_one_work+0x490/0x490 [ 49.429032] [<ffffffff810a5587>] kthread+0xe7/0x100 [ 49.434589] [<ffffffff818530c1>] ? __schedule+0x301/0x7f0 [ 49.440731] [<ffffffff810a54a0>] ? kthread_create_on_node+0x1e0/0x1e0 [ 49.448042] [<ffffffff81857bf5>] ret_from_fork+0x55/0x80 [ 49.454086] [<ffffffff810a54a0>] ? kthread_create_on_node+0x1e0/0x1e0 Root cause analysis: -------------------- In nm-1.10 and above versions, MAC spoof is enabled by default. In Redpine driver, this handling is missed. Hence, Added the fix for the same. Fix: ---- Copied the Custom MAC address into driver global structure. Regression Petential: --------------------- This is a very direct issue Since the driver is crashing upon inserting the modules. we ran the multiple times insertion and deletion of modules and connected to third-party AP, did data transfer. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1813869/+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
