------------[ 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#3: swapper/3/0 Modules linked in: CPU: 3 UID: 0 PID: 0 Comm: swapper/3 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 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 d7 57 0a f7 48 8d 3d a0 8f ea 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 fb 44 77 f7 e9 03 RSP: 0018:ffffc900005e88d0 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: 00000000ffffffff RSI: 0000000000000000 RDI: ffffffff90e834b0 RBP: 00000000ffffffff R08: 0000000000000000 R09: 0000000000000000 R10: 000000000000000c R11: 0000000000000000 R12: ffff8880131622a8 R13: ffff8880683231e8 R14: 0000000000000000 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88809748e000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000c3abbdc CR3: 000000000e596000 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_beacon_get_finish+0x45a/0x690 net/mac80211/tx.c:5436 __ieee80211_beacon_get_ap+0x76e/0x10d0 net/mac80211/tx.c:5539 ieee80211_beacon_get_ap net/mac80211/tx.c:5601 [inline] __ieee80211_beacon_get+0x14fa/0x1ee0 net/mac80211/tx.c:5707 ieee80211_beacon_get_tim+0xa6/0x280 net/mac80211/tx.c:5849 ieee80211_beacon_get include/net/mac80211.h:5848 [inline] mac80211_hwsim_beacon_tx+0x4d7/0xa00 drivers/net/wireless/virtual/mac80211_hwsim.c:2497 __iterate_interfaces+0x2e6/0x650 net/mac80211/util.c:772 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 net/mac80211/util.c:808 mac80211_hwsim_beacon+0x105/0x1b0 drivers/net/wireless/virtual/mac80211_hwsim.c:2531 __run_hrtimer kernel/time/hrtimer.c:1930 [inline] __hrtimer_run_queues+0x470/0xa00 kernel/time/hrtimer.c:1994 hrtimer_run_softirq+0x17d/0x2c0 kernel/time/hrtimer.c:2011 handle_softirqs+0x1ea/0xa00 kernel/softirq.c:622 __do_softirq kernel/softirq.c:656 [inline] invoke_softirq kernel/softirq.c:496 [inline] __irq_exit_rcu+0x162/0x210 kernel/softirq.c:735 irq_exit_rcu+0x9/0x30 kernel/softirq.c:752 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1061 [inline] sysvec_apic_timer_interrupt+0xa3/0xc0 arch/x86/kernel/apic/apic.c:1061 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697 RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:63 Code: c6 95 02 e9 43 44 03 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d 83 a0 24 00 fb f4 cc cc cc cc 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90 RSP: 0018:ffffc9000048fdf0 EFLAGS: 00000202 RAX: 0000000000153dbf RBX: ffff88801c3ca540 RCX: ffffffff8b86f225 RDX: 0000000000000000 RSI: ffffffff8df1ae4d RDI: ffffffff8c1c4680 RBP: 0000000000000000 R08: 0000000000000001 R09: ffffed10056a67b5 R10: ffff88802b533dab R11: 0000000000000000 R12: 0000000000000003 R13: ffffed10038794a8 R14: 0000000000000003 R15: ffffffff90d74750 arch_safe_halt arch/x86/include/asm/paravirt.h:62 [inline] default_idle+0x9/0x10 arch/x86/kernel/process.c:767 default_idle_call+0x6c/0xb0 kernel/sched/idle.c:122 cpuidle_idle_call kernel/sched/idle.c:199 [inline] do_idle+0x464/0x590 kernel/sched/idle.c:352 cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:451 start_secondary+0x21d/0x2d0 arch/x86/kernel/smpboot.c:312 common_startup_64+0x13e/0x148 ---------------- Code disassembly (best guess): 0: f7 48 8b 44 24 10 8b testl $0x8b102444,-0x75(%rax) 7: ac lods %ds:(%rsi),%al 8: a8 d4 test $0xd4,%al a: 00 00 add %al,(%rax) c: 00 e8 add %ch,%al e: d7 xlat %ds:(%rbx) f: 57 push %rdi 10: 0a f7 or %bh,%dh 12: 48 8d 3d a0 8f ea 05 lea 0x5ea8fa0(%rip),%rdi # 0x5ea8fb9 19: 44 8b 44 24 04 mov 0x4(%rsp),%r8d 1e: 48 8b 74 24 10 mov 0x10(%rsp),%rsi 23: 45 89 f1 mov %r14d,%r9d 26: 89 d9 mov %ebx,%ecx 28: 89 ea mov %ebp,%edx * 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction 2f: e9 2f fd ff ff jmp 0xfffffd63 34: 48 8b 7c 24 08 mov 0x8(%rsp),%rdi 39: e8 fb 44 77 f7 call 0xf7774539 3e: e9 .byte 0xe9 3f: 03 .byte 0x3