------------[ cut here ]------------ WARNING: CPU: 1 PID: 1093 at net/mac80211/chan.c:92 ieee80211_chanctx_reserved_chandef net/mac80211/chan.c:90 [inline] WARNING: CPU: 1 PID: 1093 at net/mac80211/chan.c:92 ieee80211_chsw_switch_hwconf net/mac80211/chan.c:1422 [inline] WARNING: CPU: 1 PID: 1093 at net/mac80211/chan.c:92 ieee80211_vif_use_reserved_switch+0x110e/0x2900 net/mac80211/chan.c:1638 Modules linked in: CPU: 1 PID: 1093 Comm: kworker/u4:6 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: phy4 ieee80211_csa_finalize_work RIP: 0010:ieee80211_chanctx_reserved_chandef net/mac80211/chan.c:92 [inline] RIP: 0010:ieee80211_chsw_switch_hwconf net/mac80211/chan.c:1422 [inline] RIP: 0010:ieee80211_vif_use_reserved_switch+0x110e/0x2900 net/mac80211/chan.c:1638 Code: 48 89 df e8 d4 44 d0 f7 e9 d6 fc ff ff e8 7a c2 77 f7 eb 24 e8 73 c2 77 f7 c7 04 24 f4 ff ff ff e9 cc f5 ff ff e8 62 c2 77 f7 <0f> 0b 0f 0b e9 b7 f5 ff ff e8 54 c2 77 f7 48 8b 7c 24 08 4c 8b 74 RSP: 0000:ffffc9000453f9c0 EFLAGS: 00010293 RAX: ffffffff8a0fab12 RBX: 0000000000000001 RCX: ffff888023ee1e00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: dffffc0000000000 R08: ffff88805cbd562f R09: 1ffff1100b97aac5 R10: dffffc0000000000 R11: ffffed100b97aac6 R12: 0000000000000001 R13: ffff88805cbd6659 R14: ffff88807cb42d48 R15: ffff88806a45b100 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f09dae92e9c CR3: 000000005ea44000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000c DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: ieee80211_link_use_reserved_context+0x37b/0x5c0 net/mac80211/chan.c:1927 __ieee80211_csa_finalize net/mac80211/cfg.c:3669 [inline] ieee80211_csa_finalize+0x571/0xeb0 net/mac80211/cfg.c:3708 ieee80211_csa_finalize_work+0xf6/0x140 net/mac80211/cfg.c:3733 process_one_work kernel/workqueue.c:2657 [inline] process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2734 worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2815 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 irq event stamp: 8894445 hardirqs last enabled at (8894447): [] vprintk_store+0x9fb/0xd50 kernel/printk/printk.c:2297 hardirqs last disabled at (8894448): [] vprintk_store+0x194/0xd50 kernel/printk/printk.c:2206 softirqs last enabled at (8894388): [] __do_softirq kernel/softirq.c:612 [inline] softirqs last enabled at (8894388): [] invoke_softirq kernel/softirq.c:452 [inline] softirqs last enabled at (8894388): [] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 softirqs last disabled at (8894311): [] __do_softirq kernel/softirq.c:612 [inline] softirqs last disabled at (8894311): [] invoke_softirq kernel/softirq.c:452 [inline] softirqs last disabled at (8894311): [] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ WARNING: CPU: 1 PID: 1093 at net/mac80211/chan.c:1423 ieee80211_chanctx_reserved_chandef net/mac80211/chan.c:92 [inline] WARNING: CPU: 1 PID: 1093 at net/mac80211/chan.c:1423 ieee80211_chsw_switch_hwconf net/mac80211/chan.c:1422 [inline] WARNING: CPU: 1 PID: 1093 at net/mac80211/chan.c:1423 ieee80211_vif_use_reserved_switch+0x1110/0x2900 net/mac80211/chan.c:1638 Modules linked in: CPU: 1 PID: 1093 Comm: kworker/u4:6 Tainted: G W syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 Workqueue: phy4 ieee80211_csa_finalize_work RIP: 0010:ieee80211_chsw_switch_hwconf net/mac80211/chan.c:1423 [inline] RIP: 0010:ieee80211_vif_use_reserved_switch+0x1110/0x2900 net/mac80211/chan.c:1638 Code: df e8 d4 44 d0 f7 e9 d6 fc ff ff e8 7a c2 77 f7 eb 24 e8 73 c2 77 f7 c7 04 24 f4 ff ff ff e9 cc f5 ff ff e8 62 c2 77 f7 0f 0b <0f> 0b e9 b7 f5 ff ff e8 54 c2 77 f7 48 8b 7c 24 08 4c 8b 74 24 30 RSP: 0000:ffffc9000453f9c0 EFLAGS: 00010293 RAX: ffffffff8a0fab12 RBX: 0000000000000001 RCX: ffff888023ee1e00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: dffffc0000000000 R08: ffff88805cbd562f R09: 1ffff1100b97aac5 R10: dffffc0000000000 R11: ffffed100b97aac6 R12: 0000000000000001 R13: ffff88805cbd6659 R14: ffff88807cb42d48 R15: ffff88806a45b100 FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000dce030 CR3: 00000000618f0000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000c DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: ieee80211_link_use_reserved_context+0x37b/0x5c0 net/mac80211/chan.c:1927 __ieee80211_csa_finalize net/mac80211/cfg.c:3669 [inline] ieee80211_csa_finalize+0x571/0xeb0 net/mac80211/cfg.c:3708 ieee80211_csa_finalize_work+0xf6/0x140 net/mac80211/cfg.c:3733 process_one_work kernel/workqueue.c:2657 [inline] process_scheduled_works+0xa60/0x1600 kernel/workqueue.c:2734 worker_thread+0xa5e/0xfe0 kernel/workqueue.c:2815 kthread+0x2fa/0x390 kernel/kthread.c:388 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293 irq event stamp: 8894623 hardirqs last enabled at (8894625): [] vprintk_store+0x9fb/0xd50 kernel/printk/printk.c:2297 hardirqs last disabled at (8894626): [] vprintk_store+0x194/0xd50 kernel/printk/printk.c:2206 softirqs last enabled at (8894602): [] __do_softirq kernel/softirq.c:612 [inline] softirqs last enabled at (8894602): [] invoke_softirq kernel/softirq.c:452 [inline] softirqs last enabled at (8894602): [] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 softirqs last disabled at (8894533): [] __do_softirq kernel/softirq.c:612 [inline] softirqs last disabled at (8894533): [] invoke_softirq kernel/softirq.c:452 [inline] softirqs last disabled at (8894533): [] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 ---[ end trace 0000000000000000 ]--- wlan1: failed to finalize CSA, disconnecting