syzbot

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WARNING: CPU: 1 PID: 5941 at net/mac80211/chan.c:92 ieee80211_chanctx_reserved_chandef net/mac80211/chan.c:90 [inline]
WARNING: CPU: 1 PID: 5941 at net/mac80211/chan.c:92 ieee80211_chsw_switch_hwconf net/mac80211/chan.c:1422 [inline]
WARNING: CPU: 1 PID: 5941 at net/mac80211/chan.c:92 ieee80211_vif_use_reserved_switch+0x10e8/0x28f0 net/mac80211/chan.c:1638
Modules linked in:

CPU: 1 PID: 5941 Comm: syz.0.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
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+0x10e8/0x28f0 net/mac80211/chan.c:1638
Code: 48 89 df e8 1a 06 ea f7 e9 dc fc ff ff e8 f0 bf 92 f7 eb 24 e8 e9 bf 92 f7 c7 04 24 f4 ff ff ff e9 e4 f5 ff ff e8 d8 bf 92 f7 <0f> 0b 0f 0b e9 cf f5 ff ff e8 ca bf 92 f7 48 8b 7c 24 08 4c 8b 7c
RSP: 0018:ffffc900036a6e20 EFLAGS: 00010293
RAX: ffffffff89f2cbce RBX: 0000000000000001 RCX: ffff88807ed33c00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff90da55c7 R09: 1ffffffff21b4ab8
R10: dffffc0000000000 R11: fffffbfff21b4ab9 R12: 0000000000000001
R13: ffff88807e56e5d9 R14: ffff88807b8d2c70 R15: ffff88807b8d2ce8
FS:  000055557663b500(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2ce63fff CR3: 000000007b34e000 CR4: 00000000003506e0
Call Trace:
 <TASK>
 ieee80211_link_use_reserved_context+0x383/0x5c0 net/mac80211/chan.c:1927
 __ieee80211_csa_finalize net/mac80211/cfg.c:3679 [inline]
 ieee80211_csa_finalize+0x59a/0xf00 net/mac80211/cfg.c:3718
 __ieee80211_channel_switch net/mac80211/cfg.c:3993 [inline]
 ieee80211_channel_switch+0xa8a/0xe30 net/mac80211/cfg.c:4009
 rdev_channel_switch+0xeb/0x240 net/wireless/rdev-ops.h:1111
 nl80211_channel_switch+0xa07/0x1040 net/wireless/nl80211.c:10335
 genl_family_rcv_msg_doit+0x209/0x2f0 net/netlink/genetlink.c:971
 genl_family_rcv_msg net/netlink/genetlink.c:1051 [inline]
 genl_rcv_msg+0x60b/0x790 net/netlink/genetlink.c:1066
 netlink_rcv_skb+0x216/0x480 net/netlink/af_netlink.c:2545
 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1075
 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline]
 netlink_unicast+0x751/0x8d0 net/netlink/af_netlink.c:1346
 netlink_sendmsg+0x8c1/0xbe0 net/netlink/af_netlink.c:1894
 sock_sendmsg_nosec net/socket.c:730 [inline]
 __sock_sendmsg net/socket.c:745 [inline]
 ____sys_sendmsg+0x5bf/0x950 net/socket.c:2595
 ___sys_sendmsg+0x220/0x290 net/socket.c:2649
 __sys_sendmsg net/socket.c:2678 [inline]
 __do_sys_sendmsg net/socket.c:2687 [inline]
 __se_sys_sendmsg+0x1a5/0x270 net/socket.c:2685
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f827518ebe9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffeb81bd2f8 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f82753c5fa0 RCX: 00007f827518ebe9
RDX: 0000000000000000 RSI: 0000200000000200 RDI: 0000000000000003
RBP: 00007f8275211e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f82753c5fa0 R14: 00007f82753c5fa0 R15: 0000000000000003
 </TASK>