------------[ cut here ]------------ intf 08:02:11:00:00:00 [link=0]: bad STA 08:02:11:00:00:01 bandwidth 20 MHz (0) > channel config 10 MHz (7) WARNING: drivers/net/wireless/virtual/mac80211_hwsim.c:2696 at 0x0, CPU#1: syz.8.5719/21134 Modules linked in: CPU: 1 UID: 0 PID: 21134 Comm: syz.8.5719 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:mac80211_hwsim_sta_rc_update+0x6f4/0x860 drivers/net/wireless/virtual/mac80211_hwsim.c:2693 Code: 85 d2 00 00 00 45 8b 36 44 89 f7 e8 a6 20 00 00 48 8b 7c 24 28 48 8b 74 24 30 89 ea 48 8b 4c 24 10 41 89 d8 45 89 f9 41 56 50 <67> 48 0f b9 3a 48 83 c4 10 e9 08 ff ff ff e8 b9 79 e9 fa 90 0f 0b RSP: 0018:ffffc9000c6e6df8 EFLAGS: 00010287 RAX: 000000000000000a RBX: 0000000000000014 RCX: ffff88807dbe8ec0 RDX: 0000000000000000 RSI: ffff88807d1d3012 RDI: ffffffff8fcf5f60 RBP: 0000000000000000 R08: 0000000000000014 R09: 0000000000000000 R10: 000000000000000d R11: 0000000000000002 R12: 0000000000000000 R13: dffffc0000000000 R14: 0000000000000007 R15: 0000000000000000 FS: 00007ff3c84ed6c0(0000) GS:ffff888125b03000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001080 CR3: 000000005c3fa000 CR4: 00000000003526f0 Call Trace: mac80211_hwsim_sta_add+0xa4/0x350 drivers/net/wireless/virtual/mac80211_hwsim.c:2713 drv_sta_add net/mac80211/driver-ops.h:470 [inline] drv_sta_state+0x86a/0x1770 net/mac80211/driver-ops.c:155 sta_info_insert_drv_state net/mac80211/sta_info.c:824 [inline] sta_info_insert_finish net/mac80211/sta_info.c:932 [inline] sta_info_insert_rcu+0x1a30/0x2840 net/mac80211/sta_info.c:1009 sta_info_insert+0x16/0xc0 net/mac80211/sta_info.c:1014 rdev_add_station+0xfc/0x270 net/wireless/rdev-ops.h:201 nl80211_new_station+0x1755/0x1b70 net/wireless/nl80211.c:8782 genl_family_rcv_msg_doit+0x215/0x300 net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x60e/0x790 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x208/0x470 net/netlink/af_netlink.c:2550 genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline] netlink_unicast+0x82f/0x9e0 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x805/0xb30 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec+0x18f/0x1d0 net/socket.c:728 __sock_sendmsg net/socket.c:743 [inline] ____sys_sendmsg+0x577/0x880 net/socket.c:2601 ___sys_sendmsg+0x21f/0x2a0 net/socket.c:2655 __sys_sendmsg net/socket.c:2687 [inline] __do_sys_sendmsg net/socket.c:2692 [inline] __se_sys_sendmsg net/socket.c:2690 [inline] __x64_sys_sendmsg+0x19b/0x260 net/socket.c:2690 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7ff3c758f749 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:00007ff3c84ed038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007ff3c77e5fa0 RCX: 00007ff3c758f749 RDX: 0000000020000000 RSI: 0000200000001080 RDI: 0000000000000006 RBP: 00007ff3c7613f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ff3c77e6038 R14: 00007ff3c77e5fa0 R15: 00007ffc8cfd6508 ---------------- Code disassembly (best guess): 0: 85 d2 test %edx,%edx 2: 00 00 add %al,(%rax) 4: 00 45 8b add %al,-0x75(%rbp) 7: 36 44 89 f7 ss mov %r14d,%edi b: e8 a6 20 00 00 call 0x20b6 10: 48 8b 7c 24 28 mov 0x28(%rsp),%rdi 15: 48 8b 74 24 30 mov 0x30(%rsp),%rsi 1a: 89 ea mov %ebp,%edx 1c: 48 8b 4c 24 10 mov 0x10(%rsp),%rcx 21: 41 89 d8 mov %ebx,%r8d 24: 45 89 f9 mov %r15d,%r9d 27: 41 56 push %r14 29: 50 push %rax * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 48 83 c4 10 add $0x10,%rsp 33: e9 08 ff ff ff jmp 0xffffff40 38: e8 b9 79 e9 fa call 0xfae979f6 3d: 90 nop 3e: 0f 0b ud2