------------[ cut here ]------------ wlan1: Failed check-sdata-in-driver check, flags: 0x0 WARNING: net/mac80211/driver-ops.c:366 at 0x0, CPU#0: syz.1.2037/12910 Modules linked in: CPU: 0 UID: 0 PID: 12910 Comm: syz.1.2037 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:drv_unassign_vif_chanctx+0x204/0x7f0 net/mac80211/driver-ops.c:366 Code: 92 f0 f1 f6 48 8b 74 24 10 48 81 c6 20 01 00 00 48 89 74 24 10 e8 7c f0 f1 f6 48 8d 3d 15 1f c9 05 8b 54 24 04 48 8b 74 24 10 <67> 48 0f b9 3a e8 62 f0 f1 f6 4c 89 f2 48 b8 00 00 00 00 00 fc ff RSP: 0000:ffffc9000400f260 EFLAGS: 00010283 RAX: 00000000000070bc RBX: ffff888054c70d80 RCX: ffffc90004bd2000 RDX: 0000000000000000 RSI: ffff888054c70120 RDI: ffffffff90950de0 RBP: ffff888077cc0e80 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 000000003d4975e1 R12: ffff888054c72ad8 R13: 0000000000000000 R14: ffff888054c717b8 R15: ffff888054c72a80 FS: 00007f0625d9c6c0(0000) GS:ffff88812499c000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055a24bd7ff08 CR3: 000000006a77c000 CR4: 00000000003526f0 Call Trace: ieee80211_assign_link_chanctx+0x3f1/0xf00 net/mac80211/chan.c:905 __ieee80211_link_release_channel+0x273/0x4b0 net/mac80211/chan.c:1879 ieee80211_link_release_channel+0x128/0x200 net/mac80211/chan.c:2154 ieee80211_if_change_type+0x2b0/0x7a0 net/mac80211/iface.c:2015 ieee80211_change_iface+0xa5/0x500 net/mac80211/cfg.c:254 rdev_change_virtual_intf net/wireless/rdev-ops.h:74 [inline] cfg80211_change_iface+0x582/0xd60 net/wireless/util.c:1238 nl80211_set_interface+0x8e0/0xc80 net/wireless/nl80211.c:4632 genl_family_rcv_msg_doit+0x209/0x2f0 net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x55c/0x800 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x158/0x420 net/netlink/af_netlink.c:2552 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1320 [inline] netlink_unicast+0x5aa/0x870 net/netlink/af_netlink.c:1346 netlink_sendmsg+0x8c8/0xdd0 net/netlink/af_netlink.c:1896 sock_sendmsg_nosec net/socket.c:718 [inline] __sock_sendmsg net/socket.c:733 [inline] ____sys_sendmsg+0xa5d/0xc30 net/socket.c:2608 ___sys_sendmsg+0x134/0x1d0 net/socket.c:2662 __sys_sendmsg+0x16d/0x220 net/socket.c:2694 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0624f8f749 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:00007f0625d9c038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f06251e5fa0 RCX: 00007f0624f8f749 RDX: 0000000000000000 RSI: 0000200000000100 RDI: 0000000000000003 RBP: 00007f0625013f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f06251e6038 R14: 00007f06251e5fa0 R15: 00007ffd81ceb258 ---------------- Code disassembly (best guess): 0: 92 xchg %eax,%edx 1: f0 f1 lock int1 3: f6 48 8b 74 testb $0x74,-0x75(%rax) 7: 24 10 and $0x10,%al 9: 48 81 c6 20 01 00 00 add $0x120,%rsi 10: 48 89 74 24 10 mov %rsi,0x10(%rsp) 15: e8 7c f0 f1 f6 call 0xf6f1f096 1a: 48 8d 3d 15 1f c9 05 lea 0x5c91f15(%rip),%rdi # 0x5c91f36 21: 8b 54 24 04 mov 0x4(%rsp),%edx 25: 48 8b 74 24 10 mov 0x10(%rsp),%rsi * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: e8 62 f0 f1 f6 call 0xf6f1f096 34: 4c 89 f2 mov %r14,%rdx 37: 48 rex.W 38: b8 00 00 00 00 mov $0x0,%eax 3d: 00 fc add %bh,%ah 3f: ff .byte 0xff