Hi, > I get this oops in 4.15rc9 when doing the following: > > # iw dev wlp2s0 set type ibss > # ip link set dev wlp2s0 up > # iw dev wlp2s0 ibss join "TEST" 2412 > > The oops happens after some delay (approx. 5 seconds). > > Hardware is: > > 02:00.0 Network controller: Intel Corporation Wireless 8265 / 8275 (rev 78) pci > vendor code 8086:24fd > Subsystem: 8086:0050 > > Oops message is: > > IPv6: ADDRCONF(NETDEV_UP): wlp2s0: link is not ready > wlp2s0: Trigger new scan to find an IBSS to join > wlp2s0: Trigger new scan to find an IBSS to join > wlp2s0: Trigger new scan to find an IBSS to join > wlp2s0: Trigger new scan to find an IBSS to join > wlp2s0: Trigger new scan to find an IBSS to join > wlp2s0: Trigger new scan to find an IBSS to join > wlp2s0: Trigger new scan to find an IBSS to join > wlp2s0: Trigger new scan to find an IBSS to join > wlp2s0: Trigger new scan to find an IBSS to join > wlp2s0: Trigger new scan to find an IBSS to join > wlp2s0: Creating new IBSS network, BSSID 3a:94:1d:dd:ab:09 > BUG: unable to handle kernel NULL pointer dereference at > 0000000000000068 We have a fix for this which should go upstream soon: commit 0e37a1940fcfae99ffec59ad620ed819999feb2d Author: Sara Sharon <sara.sharon@xxxxxxxxx> Date: Thu Dec 21 15:05:28 2017 +0200 [BUGFIX] iwlwifi: mvm: fix IBSS for devices that support station type API in our internal tree which is mirrored here: https://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/backport-iwlwifi.git/