------------[ cut here ]------------ no supported rates for sta (null) (0xffffffff, band 0) in rate_mask 0x0 with flags 0x0 WARNING: net/mac80211/rate.c:401 at __rate_control_send_low+0x62a/0x760 net/mac80211/rate.c:401, CPU#1: kworker/1:8/5997 Modules linked in: CPU: 1 UID: 0 PID: 5997 Comm: kworker/1:8 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 Workqueue: mld mld_ifc_work RIP: 0010:__rate_control_send_low+0x63c/0x760 net/mac80211/rate.c:401 Code: 8b 44 24 08 46 8b a4 a0 d4 00 00 00 e8 5d 5d d3 f6 48 8d 3d b6 4f ad 05 44 8b 44 24 24 48 8b 74 24 08 45 89 e9 89 d9 44 89 e2 <67> 48 0f b9 3a e9 4a fd ff ff 48 8b 3c 24 e8 41 42 3c f7 e9 1f fd RSP: 0018:ffffc900045be9c0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 00000000ffffffff RSI: 0000000000000000 RDI: ffffffff9098c870 RBP: ffff88807778ca28 R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000000c R11: 0000000000000000 R12: 00000000ffffffff R13: 0000000000000000 R14: 000000000000000c R15: ffff88807778ca30 FS: 0000000000000000(0000) GS:ffff8881249f6000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f016da9e000 CR3: 000000007398e000 CR4: 0000000000350ef0 Call Trace: rate_control_send_low+0x52a/0x810 net/mac80211/rate.c:429 rate_control_get_rate+0x1be/0x5e0 net/mac80211/rate.c:943 ieee80211_tx_h_rate_ctrl+0xa35/0x1ad0 net/mac80211/tx.c:765 invoke_tx_handlers_late+0x1172/0x27d0 net/mac80211/tx.c:1849 ieee80211_tx_dequeue+0x3086/0x43f0 net/mac80211/tx.c:3936 wake_tx_push_queue net/mac80211/util.c:294 [inline] ieee80211_handle_wake_tx_queue+0x19c/0x260 net/mac80211/util.c:315 drv_wake_tx_queue net/mac80211/driver-ops.h:1394 [inline] schedule_and_wake_txq net/mac80211/driver-ops.h:1401 [inline] ieee80211_queue_skb+0x127f/0x1f80 net/mac80211/tx.c:1664 ieee80211_tx+0x2e4/0x460 net/mac80211/tx.c:1968 ieee80211_xmit+0x30f/0x3e0 net/mac80211/tx.c:2064 __ieee80211_subif_start_xmit+0x880/0x1390 net/mac80211/tx.c:4344 ieee80211_subif_start_xmit+0x11b/0x1970 net/mac80211/tx.c:4540 __netdev_start_xmit include/linux/netdevice.h:5273 [inline] netdev_start_xmit include/linux/netdevice.h:5282 [inline] xmit_one net/core/dev.c:3853 [inline] dev_hard_start_xmit+0x97/0x6e0 net/core/dev.c:3869 __dev_queue_xmit+0x6d7/0x4650 net/core/dev.c:4817 dev_queue_xmit include/linux/netdevice.h:3381 [inline] neigh_resolve_output net/core/neighbour.c:1594 [inline] neigh_resolve_output+0x53a/0x940 net/core/neighbour.c:1574 neigh_output include/net/neighbour.h:556 [inline] ip6_finish_output2+0xad1/0x1cf0 net/ipv6/ip6_output.c:136 __ip6_finish_output+0x3cd/0x1010 net/ipv6/ip6_output.c:209 ip6_finish_output net/ipv6/ip6_output.c:220 [inline] NF_HOOK_COND include/linux/netfilter.h:307 [inline] ip6_output+0x253/0x710 net/ipv6/ip6_output.c:247 dst_output+0xa8/0x4b0 include/net/dst.h:464 NF_HOOK include/linux/netfilter.h:318 [inline] NF_HOOK include/linux/netfilter.h:312 [inline] mld_sendpack+0xa30/0xed0 net/ipv6/mcast.c:1855 mld_send_cr net/ipv6/mcast.c:2154 [inline] mld_ifc_work+0x740/0xbf0 net/ipv6/mcast.c:2693 process_one_work+0x9ba/0x1b20 kernel/workqueue.c:3257 process_scheduled_works kernel/workqueue.c:3340 [inline] worker_thread+0x6c8/0xf10 kernel/workqueue.c:3421 kthread+0x3c5/0x780 kernel/kthread.c:463 ret_from_fork+0x983/0xb10 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 ---------------- Code disassembly (best guess): 0: 8b 44 24 08 mov 0x8(%rsp),%eax 4: 46 8b a4 a0 d4 00 00 mov 0xd4(%rax,%r12,4),%r12d b: 00 c: e8 5d 5d d3 f6 call 0xf6d35d6e 11: 48 8d 3d b6 4f ad 05 lea 0x5ad4fb6(%rip),%rdi # 0x5ad4fce 18: 44 8b 44 24 24 mov 0x24(%rsp),%r8d 1d: 48 8b 74 24 08 mov 0x8(%rsp),%rsi 22: 45 89 e9 mov %r13d,%r9d 25: 89 d9 mov %ebx,%ecx 27: 44 89 e2 mov %r12d,%edx * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: e9 4a fd ff ff jmp 0xfffffd7e 34: 48 8b 3c 24 mov (%rsp),%rdi 38: e8 41 42 3c f7 call 0xf73c427e 3d: e9 .byte 0xe9 3e: 1f (bad) 3f: fd std