------------[ cut here ]------------ no supported rates for sta (null) (0xffffffff, band 0) in rate_mask 0x0 with flags 0x0 WARNING: net/mac80211/rate.c:412 at __rate_control_send_low+0x652/0x900 net/mac80211/rate.c:407, CPU#0: syz.4.1824/13159 Modules linked in: CPU: 0 UID: 0 PID: 13159 Comm: syz.4.1824 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/16/2026 RIP: 0010:__rate_control_send_low+0x67c/0x900 net/mac80211/rate.c:407 Code: 48 8b 34 24 48 8b 44 24 20 42 0f b6 04 38 84 c0 0f 85 da 01 00 00 8b 0e 4c 89 f7 48 8b 74 24 10 44 8b 44 24 1c 44 8b 4c 24 0c <67> 48 0f b9 3a e9 36 fe ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c RSP: 0018:ffffc900000076f8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 000000000000000c RCX: 0000000000000000 RDX: 00000000ffffffff RSI: 0000000000000000 RDI: ffffffff918c79a0 RBP: ffff888056af32c0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000004 R11: 8000000000000100 R12: ffff888056af0fa0 R13: ffff8880790f97a8 R14: ffffffff918c79a0 R15: dffffc0000000000 FS: 00007f0c1e9b66c0(0000) GS:ffff888123abf000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f34a011ceb8 CR3: 000000007a152000 CR4: 00000000003526f0 Call Trace: rate_control_send_low+0x1a7/0x7b0 net/mac80211/rate.c:435 rate_control_get_rate+0x20b/0x5d0 net/mac80211/rate.c:943 ieee80211_beacon_get_finish+0x385/0x6c0 net/mac80211/tx.c:5604 ieee80211_beacon_get_ap+0x19d5/0x20c0 net/mac80211/tx.c:-1 __ieee80211_beacon_get+0x1250/0x1920 net/mac80211/tx.c:5875 ieee80211_beacon_get_tim+0xbd/0x2c0 net/mac80211/tx.c:6017 ieee80211_beacon_get include/net/mac80211.h:5902 [inline] mac80211_hwsim_beacon_tx+0x378/0x820 drivers/net/wireless/virtual/mac80211_hwsim_main.c:2505 __iterate_interfaces+0x2af/0x5a0 net/mac80211/util.c:775 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180 net/mac80211/util.c:811 mac80211_hwsim_beacon+0xaf/0x240 drivers/net/wireless/virtual/mac80211_hwsim_main.c:2541 __run_hrtimer kernel/time/hrtimer.c:2074 [inline] __hrtimer_run_queues+0x3bc/0xa10 kernel/time/hrtimer.c:2131 hrtimer_run_softirq+0x1e3/0x2e0 kernel/time/hrtimer.c:2148 handle_softirqs+0x226/0x860 kernel/softirq.c:645 do_softirq+0x77/0xd0 kernel/softirq.c:546 __local_bh_enable_ip+0x100/0x140 kernel/softirq.c:473 local_bh_enable include/linux/bottom_half.h:33 [inline] __alloc_skb+0x1b1/0x7a0 net/core/skbuff.c:699 alloc_skb include/linux/skbuff.h:1384 [inline] alloc_skb_with_frags+0xc6/0x760 net/core/skbuff.c:6803 sock_alloc_send_pskb+0x878/0x990 net/core/sock.c:3023 sock_alloc_send_skb include/net/sock.h:1907 [inline] __ip_append_data+0x29ea/0x3cf0 net/ipv4/ip_output.c:1134 ip_make_skb+0x22e/0x440 net/ipv4/ip_output.c:1581 udp_sendmsg+0x1937/0x2140 net/ipv4/udp.c:1460 sock_sendmsg_nosec+0x10e/0x180 net/socket.c:801 __sock_sendmsg net/socket.c:815 [inline] ____sys_sendmsg+0x54e/0x850 net/socket.c:2713 ___sys_sendmsg+0x2a5/0x360 net/socket.c:2767 __sys_sendmmsg+0x273/0x4d0 net/socket.c:2856 __do_sys_sendmmsg net/socket.c:2883 [inline] __se_sys_sendmmsg net/socket.c:2880 [inline] __x64_sys_sendmmsg+0xa0/0xc0 net/socket.c:2880 do_syscall_x64 arch/x86/entry/syscall_64.c:61 [inline] do_syscall_64+0x166/0x520 arch/x86/entry/syscall_64.c:84 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0c1db9f559 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:00007f0c1e9b6028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f0c1de25fa0 RCX: 00007f0c1db9f559 RDX: 000000000800001d RSI: 0000200000000280 RDI: 0000000000000003 RBP: 00007f0c1dc36b20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f0c1de26038 R14: 00007f0c1de25fa0 R15: 00007fff9dafc8d8 ---------------- Code disassembly (best guess): 0: 48 8b 34 24 mov (%rsp),%rsi 4: 48 8b 44 24 20 mov 0x20(%rsp),%rax 9: 42 0f b6 04 38 movzbl (%rax,%r15,1),%eax e: 84 c0 test %al,%al 10: 0f 85 da 01 00 00 jne 0x1f0 16: 8b 0e mov (%rsi),%ecx 18: 4c 89 f7 mov %r14,%rdi 1b: 48 8b 74 24 10 mov 0x10(%rsp),%rsi 20: 44 8b 44 24 1c mov 0x1c(%rsp),%r8d 25: 44 8b 4c 24 0c mov 0xc(%rsp),%r9d * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: e9 36 fe ff ff jmp 0xfffffe6a 34: 89 d9 mov %ebx,%ecx 36: 80 e1 07 and $0x7,%cl 39: 80 c1 03 add $0x3,%cl 3c: 38 c1 cmp %al,%cl 3e: 0f .byte 0xf 3f: 8c .byte 0x8c