------------[ 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:2693 at mac80211_hwsim_sta_rc_update+0x5db/0x840 drivers/net/wireless/virtual/mac80211_hwsim.c:2693, CPU#1: syz.5.5639/22626 Modules linked in: CPU: 1 UID: 0 PID: 22626 Comm: syz.5.5639 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026 RIP: 0010:mac80211_hwsim_sta_rc_update+0x5fd/0x840 drivers/net/wireless/virtual/mac80211_hwsim.c:2693 Code: 00 48 8d 3d b5 cd c2 09 48 8b 4c 24 10 48 8b 44 24 20 89 da 44 8b 89 c0 01 00 00 55 48 8d b0 72 05 00 00 41 57 44 8b 44 24 14 <67> 48 0f b9 3a 58 5a e9 3c fc ff ff e8 32 14 e5 fa e8 fd 79 6a 04 RSP: 0018:ffffc90005c07120 EFLAGS: 00010246 RAX: ffff88809f516a90 RBX: 0000000000000000 RCX: ffff88806c2f0ec0 RDX: 0000000000000000 RSI: ffff88809f517002 RDI: ffffffff90e632f0 RBP: 0000000000000007 R08: 0000000000000014 R09: 0000000000000000 R10: 0000000000000007 R11: 0000000000000000 R12: dffffc0000000000 R13: ffff88806c2f1090 R14: ffff88804bcd3100 R15: 000000000000000a FS: 00007fabf0be46c0(0000) GS:ffff88812444a000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fd5d71abce0 CR3: 00000000acf48000 CR4: 0000000000350ef0 Call Trace: mac80211_hwsim_sta_add+0xc9/0x290 drivers/net/wireless/virtual/mac80211_hwsim.c:2713 drv_sta_add net/mac80211/driver-ops.h:470 [inline] drv_sta_state+0x887/0x1960 net/mac80211/driver-ops.c:155 sta_info_insert_drv_state net/mac80211/sta_info.c:836 [inline] sta_info_insert_finish net/mac80211/sta_info.c:944 [inline] sta_info_insert_rcu+0x170b/0x2fa0 net/mac80211/sta_info.c:1021 sta_info_insert+0x16/0xd0 net/mac80211/sta_info.c:1026 ieee80211_add_station+0x471/0x6d0 net/mac80211/cfg.c:2435 rdev_add_station net/wireless/rdev-ops.h:201 [inline] nl80211_new_station+0x145b/0x1dd0 net/wireless/nl80211.c:8905 genl_family_rcv_msg_doit+0x214/0x300 net/netlink/genetlink.c:1115 genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline] genl_rcv_msg+0x560/0x800 net/netlink/genetlink.c:1210 netlink_rcv_skb+0x159/0x420 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+0x5aa/0x870 net/netlink/af_netlink.c:1344 netlink_sendmsg+0x8b0/0xda0 net/netlink/af_netlink.c:1894 sock_sendmsg_nosec net/socket.c:727 [inline] __sock_sendmsg net/socket.c:742 [inline] ____sys_sendmsg+0xa54/0xc30 net/socket.c:2592 ___sys_sendmsg+0x190/0x1e0 net/socket.c:2646 __sys_sendmsg+0x170/0x220 net/socket.c:2678 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fabefd9c629 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fabf0be4028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007fabf0015fa0 RCX: 00007fabefd9c629 RDX: 0000000000000000 RSI: 0000200000001080 RDI: 0000000000000007 RBP: 00007fabefe32b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fabf0016038 R14: 00007fabf0015fa0 R15: 00007ffdaf44d148 ---------------- Code disassembly (best guess): 0: 00 48 8d add %cl,-0x73(%rax) 3: 3d b5 cd c2 09 cmp $0x9c2cdb5,%eax 8: 48 8b 4c 24 10 mov 0x10(%rsp),%rcx d: 48 8b 44 24 20 mov 0x20(%rsp),%rax 12: 89 da mov %ebx,%edx 14: 44 8b 89 c0 01 00 00 mov 0x1c0(%rcx),%r9d 1b: 55 push %rbp 1c: 48 8d b0 72 05 00 00 lea 0x572(%rax),%rsi 23: 41 57 push %r15 25: 44 8b 44 24 14 mov 0x14(%rsp),%r8d * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: 58 pop %rax 30: 5a pop %rdx 31: e9 3c fc ff ff jmp 0xfffffc72 36: e8 32 14 e5 fa call 0xfae5146d 3b: e8 fd 79 6a 04 call 0x46a7a3d