wlan1: cannot understand ECSA IE operating class, 8, ignoring ------------[ cut here ]------------ WARNING: CPU: 0 PID: 4127 at net/mac80211/ibss.c:503 ieee80211_ibss_csa_beacon+0x518/0x5b0 Modules linked in: CPU: 0 PID: 4127 Comm: kworker/u4:7 Not tainted 5.15.178-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 Workqueue: phy9 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:503 sp : ffff800020587360 x29: ffff800020587380 x28: 1fffe00019023a51 x27: dfff800000000000 x26: ffff0000d67b3670 x25: ffff0000d67b05c0 x24: 0000000000000000 x23: ffff0000c811d288 x22: ffff0000c811db18 x21: 0000000000000002 x20: ffff0000c811cc80 x19: ffff800020587620 x18: 0000000000000201 x17: 0000000000000002 x16: ffff8000084c44a8 x15: 0000000000000003 x14: ffff0000d12d9b40 x13: 0000000000ff0100 x12: 0000000000100000 x11: 0000000000002f42 x10: ffff80002bb88000 x9 : 0000000000002f43 x8 : ffff8000114e1bcc x7 : 0000000000000000 x6 : 0000000000000000 x5 : 0000000000000020 x4 : 0000000000000000 x3 : ffff800008046154 x2 : 0000000000000006 x1 : ffff800011caad00 x0 : 00000000ffffffea Call trace: ieee80211_ibss_csa_beacon+0x518/0x5b0 ieee80211_set_csa_beacon net/mac80211/cfg.c:3382 [inline] __ieee80211_channel_switch net/mac80211/cfg.c:3512 [inline] ieee80211_channel_switch+0x10c4/0x1f5c net/mac80211/cfg.c:3550 ieee80211_ibss_process_chanswitch+0x9ec/0xd60 net/mac80211/ibss.c:892 ieee80211_rx_bss_info net/mac80211/ibss.c:1151 [inline] ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1614 [inline] ieee80211_ibss_rx_queued_mgmt+0x12ac/0x2814 net/mac80211/ibss.c:1643 ieee80211_iface_process_skb net/mac80211/iface.c:1456 [inline] ieee80211_iface_work+0x5b4/0xa80 net/mac80211/iface.c:1510 process_one_work+0x790/0x11b8 kernel/workqueue.c:2310 worker_thread+0x910/0x1034 kernel/workqueue.c:2457 kthread+0x37c/0x45c kernel/kthread.c:334 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:870 irq event stamp: 253686 hardirqs last enabled at (253685): [] __local_bh_enable_ip+0x230/0x470 kernel/softirq.c:388 hardirqs last disabled at (253686): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:396 softirqs last enabled at (253684): [] spin_unlock_bh include/linux/spinlock.h:408 [inline] softirqs last enabled at (253684): [] cfg80211_get_bss+0x6e4/0xd10 net/wireless/scan.c:1512 softirqs last disabled at (253682): [] spin_lock_bh include/linux/spinlock.h:368 [inline] softirqs last disabled at (253682): [] cfg80211_get_bss+0x124/0xd10 net/wireless/scan.c:1486 ---[ end trace b9fdff6e277b1b8b ]--- wlan1: Selected IBSS BSSID 50:50:50:50:50:50 based on configured SSID 0: reclassify loop, rule prio 0, protocol 800