------------[ cut here ]------------ WARNING: CPU: 1 PID: 13544 at net/mac80211/chan.c:833 ieee80211_recalc_chanctx_chantype+0x89d/0x10f0 net/mac80211/chan.c:833 Modules linked in: CPU: 1 UID: 0 PID: 13544 Comm: syz.4.2255 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:ieee80211_recalc_chanctx_chantype+0x89d/0x10f0 net/mac80211/chan.c:833 Code: c1 e8 03 42 80 3c 20 00 74 08 4c 89 f7 e8 2b ce 54 f7 4d 8b 36 4d 39 fe 74 22 e8 2e 1c ef f6 e9 ef f8 ff ff e8 24 1c ef f6 90 <0f> 0b 90 e9 47 07 00 00 e8 16 1c ef f6 e9 39 07 00 00 48 83 7c 24 RSP: 0018:ffffc9000be96200 EFLAGS: 00010287 RAX: ffffffff8ad13012 RBX: 0000000000000000 RCX: 0000000000080000 RDX: ffffc9000cf5b000 RSI: 000000000001b42c RDI: 000000000001b42d RBP: ffffc9000be963e0 R08: ffff888061d557c7 R09: 1ffff1100c3aaaf8 R10: dffffc0000000000 R11: ffffed100c3aaaf9 R12: dffffc0000000000 R13: 0000000000000070 R14: ffff888023baa910 R15: ffff888023baa910 FS: 0000000000000000(0000) GS:ffff888125e0d000(0063) knlGS:00000000f54e6b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f54c5da4 CR3: 0000000030264000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 000000000000000e DR6: 00000000ffff0ff0 DR7: 0000000000000400 Call Trace: ieee80211_assign_link_chanctx+0x5ca/0xd70 net/mac80211/chan.c:933 __ieee80211_link_release_channel+0x33b/0x4a0 net/mac80211/chan.c:1879 ieee80211_leave_mesh+0xc5/0x130 net/mac80211/cfg.c:2952 rdev_leave_mesh net/wireless/rdev-ops.h:372 [inline] cfg80211_leave_mesh+0x293/0x800 net/wireless/mesh.c:277 cfg80211_netdev_notifier_call+0x1aa/0x1440 net/wireless/core.c:1576 notifier_call_chain+0x1b6/0x3e0 kernel/notifier.c:85 call_netdevice_notifiers_extack net/core/dev.c:2267 [inline] call_netdevice_notifiers net/core/dev.c:2281 [inline] __dev_close_many+0x106/0x6f0 net/core/dev.c:1726 __dev_close net/core/dev.c:1767 [inline] __dev_change_flags+0x2c7/0x6d0 net/core/dev.c:9635 netif_change_flags+0x88/0x1a0 net/core/dev.c:9700 do_setlink+0xc55/0x41c0 net/core/rtnetlink.c:3151 rtnl_group_changelink net/core/rtnetlink.c:3783 [inline] __rtnl_newlink net/core/rtnetlink.c:3937 [inline] rtnl_newlink+0x14ad/0x1c80 net/core/rtnetlink.c:4065 rtnetlink_rcv_msg+0x7cf/0xb70 net/core/rtnetlink.c:6954 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2552 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1896 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg+0x21c/0x270 net/socket.c:742 ____sys_sendmsg+0x505/0x830 net/socket.c:2630 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2684 __sys_sendmsg+0x164/0x220 net/socket.c:2716 do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline] __do_fast_syscall_32+0xb6/0x2b0 arch/x86/entry/syscall_32.c:306 do_fast_syscall_32+0x34/0x80 arch/x86/entry/syscall_32.c:331 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7ff3539 Code: 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f54e655c EFLAGS: 00000206 ORIG_RAX: 0000000000000172 RAX: ffffffffffffffda RBX: 0000000000000005 RCX: 0000000080000200 RDX: 0000000004000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 ---------------- Code disassembly (best guess): 0: 03 74 b4 01 add 0x1(%rsp,%rsi,4),%esi 4: 10 07 adc %al,(%rdi) 6: 03 74 b0 01 add 0x1(%rax,%rsi,4),%esi a: 10 08 adc %cl,(%rax) c: 03 74 d8 01 add 0x1(%rax,%rbx,8),%esi 20: 00 51 52 add %dl,0x52(%rcx) 23: 55 push %rbp 24: 89 e5 mov %esp,%ebp 26: 0f 34 sysenter 28: cd 80 int $0x80 * 2a: 5d pop %rbp <-- trapping instruction 2b: 5a pop %rdx 2c: 59 pop %rcx 2d: c3 ret 2e: 90 nop 2f: 90 nop 30: 90 nop 31: 90 nop 32: 90 nop 33: 90 nop 34: 90 nop 35: 90 nop 36: 90 nop 37: 90 nop 38: 90 nop 39: 90 nop 3a: 90 nop 3b: 90 nop 3c: 90 nop 3d: 90 nop 3e: 90 nop 3f: 90 nop