wlan1: cannot understand ECSA IE operating class, 8, ignoring ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4792 at net/mac80211/ibss.c:500 ieee80211_ibss_csa_beacon+0x518/0x5b0 Modules linked in: CPU: 0 PID: 4792 Comm: kworker/u4:7 Not tainted 6.1.129-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Workqueue: phy4 ieee80211_iface_work pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ieee80211_ibss_csa_beacon+0x518/0x5b0 lr : ieee80211_ibss_csa_beacon+0x514/0x5b0 net/mac80211/ibss.c:500 sp : ffff8000231d7260 x29: ffff8000231d7280 x28: 1fffe0001e6f52b5 x27: dfff800000000000 x26: ffff0000f37aaad7 x25: ffff0000cdc98760 x24: 0000000000000000 x23: ffff0000f37a95a8 x22: ffff0000f37a9b08 x21: 0000000000000002 x20: ffff0000f37a8c80 x19: ffff8000231d7520 x18: ffff8000231d6ec0 x17: ffff800018c47000 x16: ffff8000084f38c0 x15: 0000000000000002 x14: 0000000000000003 x13: ffff0000d971d340 x12: 0000000000100000 x11: 000000000000451f x10: ffff80002f2c0000 x9 : ffff800011bda8ec x8 : 0000000000004520 x7 : 0000000000000000 x6 : 0000000000000000 x5 : ffff800018f5cbc0 x4 : 0000000000000008 x3 : 0000000000000000 x2 : 0000000000000006 x1 : ffff80001247d5c0 x0 : 00000000ffffffea Call trace: ieee80211_ibss_csa_beacon+0x518/0x5b0 ieee80211_set_csa_beacon net/mac80211/cfg.c:3698 [inline] __ieee80211_channel_switch net/mac80211/cfg.c:3828 [inline] ieee80211_channel_switch+0x125c/0x21b4 net/mac80211/cfg.c:3868 ieee80211_ibss_process_chanswitch+0x9f4/0xd68 net/mac80211/ibss.c:888 ieee80211_rx_bss_info net/mac80211/ibss.c:1148 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1609 [inline] ieee80211_ibss_rx_queued_mgmt+0x11d0/0x2788 net/mac80211/ibss.c:1638 ieee80211_iface_process_skb net/mac80211/iface.c:1668 [inline] ieee80211_iface_work+0x5c4/0xa90 net/mac80211/iface.c:1722 process_one_work+0x804/0x1484 kernel/workqueue.c:2292 worker_thread+0x8e4/0xfec kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864 irq event stamp: 998014 hardirqs last enabled at (998013): [<ffff8000081c313c>] __local_bh_enable_ip+0x230/0x470 kernel/softirq.c:408 hardirqs last disabled at (998014): [<ffff80001231d31c>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405 softirqs last enabled at (998012): [<ffff800011a1ca08>] spin_unlock_bh include/linux/spinlock.h:396 [inline] softirqs last enabled at (998012): [<ffff800011a1ca08>] cfg80211_get_bss+0x4a4/0x8c0 net/wireless/scan.c:1564 softirqs last disabled at (998010): [<ffff800011a1c6ac>] spin_lock_bh include/linux/spinlock.h:356 [inline] softirqs last disabled at (998010): [<ffff800011a1c6ac>] cfg80211_get_bss+0x148/0x8c0 net/wireless/scan.c:1538 ---[ end trace 0000000000000000 ]--- wlan1: Selected IBSS BSSID 50:50:50:50:50:50 based on configured SSID