------------[ 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+0x610/0x760 net/mac80211/rate.c:401, CPU#2: kworker/2:4/5999 Modules linked in: CPU: 2 UID: 0 PID: 5999 Comm: kworker/2:4 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2 04/01/2014 Workqueue: mld mld_ifc_work RIP: 0010:__rate_control_send_low+0x621/0x760 net/mac80211/rate.c:401 Code: f7 48 8b 44 24 10 8b ac a8 d4 00 00 00 e8 37 da 18 f7 48 8d 3d 40 a6 d9 05 44 8b 44 24 04 48 8b 74 24 10 45 89 f1 89 d9 89 ea <67> 48 0f b9 3a e9 2f fd ff ff 48 8b 7c 24 08 e8 db 28 83 f7 e9 03 RSP: 0018:ffffc9000422e860 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 00000000ffffffff RSI: 0000000000000000 RDI: ffffffff90c7c770 RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000000c R11: 0000000000000000 R12: ffff8880260ad568 R13: ffff888055683128 R14: 0000000000000000 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880d67dc000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f5836417dac CR3: 00000000335e2000 CR4: 0000000000352ef0 Call Trace: rate_control_send_low+0x2a8/0x7e0 net/mac80211/rate.c:429 rate_control_get_rate+0x1be/0x5c0 net/mac80211/rate.c:943 ieee80211_tx_h_rate_ctrl+0x778/0x1a20 net/mac80211/tx.c:765 invoke_tx_handlers_late+0xfb4/0x2750 net/mac80211/tx.c:1849 ieee80211_tx_dequeue+0x2dbd/0x4370 net/mac80211/tx.c:3938 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+0x1299/0x1f60 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+0x882/0x13a0 net/mac80211/tx.c:4346 ieee80211_subif_start_xmit+0x111/0x1960 net/mac80211/tx.c:4542 __netdev_start_xmit include/linux/netdevice.h:5273 [inline] netdev_start_xmit include/linux/netdevice.h:5282 [inline] xmit_one net/core/dev.c:3866 [inline] dev_hard_start_xmit+0x127/0x6c0 net/core/dev.c:3882 __dev_queue_xmit+0x6dd/0x46f0 net/core/dev.c:4832 dev_queue_xmit include/linux/netdevice.h:3381 [inline] neigh_resolve_output net/core/neighbour.c:1594 [inline] neigh_resolve_output+0x51f/0x8f0 net/core/neighbour.c:1574 neigh_output include/net/neighbour.h:556 [inline] ip6_finish_output2+0xb0f/0x1cd0 net/ipv6/ip6_output.c:136 __ip6_finish_output+0x3cd/0x10d0 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+0x2aa/0xa60 net/ipv6/ip6_output.c:247 dst_output include/net/dst.h:464 [inline] NF_HOOK include/linux/netfilter.h:318 [inline] NF_HOOK.constprop.0+0x114/0x8b0 include/linux/netfilter.h:312 mld_sendpack+0x8f7/0xec0 net/ipv6/mcast.c:1855 mld_send_cr net/ipv6/mcast.c:2154 [inline] mld_ifc_work+0x75a/0xc10 net/ipv6/mcast.c:2693 process_one_work+0x9c2/0x1840 kernel/workqueue.c:3257 process_scheduled_works kernel/workqueue.c:3340 [inline] worker_thread+0x5da/0xe40 kernel/workqueue.c:3421 kthread+0x3b3/0x730 kernel/kthread.c:463 ret_from_fork+0x754/0xaf0 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:246 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 48 8b 44 24 10 mov 0x10(%rsp),%rax 5: 8b ac a8 d4 00 00 00 mov 0xd4(%rax,%rbp,4),%ebp c: e8 37 da 18 f7 call 0xf718da48 11: 48 8d 3d 40 a6 d9 05 lea 0x5d9a640(%rip),%rdi # 0x5d9a658 18: 44 8b 44 24 04 mov 0x4(%rsp),%r8d 1d: 48 8b 74 24 10 mov 0x10(%rsp),%rsi 22: 45 89 f1 mov %r14d,%r9d 25: 89 d9 mov %ebx,%ecx 27: 89 ea mov %ebp,%edx * 29: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2e: e9 2f fd ff ff jmp 0xfffffd62 33: 48 8b 7c 24 08 mov 0x8(%rsp),%rdi 38: e8 db 28 83 f7 call 0xf7832918 3d: e9 .byte 0xe9 3e: 03 .byte 0x3