------------[ cut here ]------------
no supported rates for sta (null) (0xffffffff, band 0) in rate_mask 0x0 with flags 0x0
WARNING: net/mac80211/rate.c:406 at __rate_control_send_low+0x524/0x800 net/mac80211/rate.c:401, CPU#0: syz.0.577/8158
Modules linked in:
CPU: 0 UID: 0 PID: 8158 Comm: syz.0.577 Not tainted syzkaller #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:__rate_control_send_low+0x5bb/0x800 net/mac80211/rate.c:401
Code: ff 4c 8b 7c 24 08 48 8b 44 24 38 0f b6 04 28 84 c0 0f 85 d3 01 00 00 41 8b 0f 4c 89 f7 48 8b 74 24 18 44 8b 44 24 2c 45 89 e9 <67> 48 0f b9 3a 4c 8b 74 24 30 e9 81 fe ff ff 44 89 f9 80 e1 07 80
RSP: 0018:ffffc90000007838 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 000000000000000c RCX: 0000000000000000
RDX: 00000000ffffffff RSI: 0000000000000000 RDI: ffffffff90227680
RBP: dffffc0000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000004 R11: 0000000000000100 R12: ffff888033a4f7a8
R13: 0000000000000000 R14: ffffffff90227680 R15: ffff88805a003138
FS: 0000555576fb9500(0000) GS:ffff888125467000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1c20dad400 CR3: 0000000068570000 CR4: 00000000003526f0
Call Trace:
rate_control_send_low+0x1a7/0x7b0 net/mac80211/rate.c:429
rate_control_get_rate+0x20b/0x5d0 net/mac80211/rate.c:943
ieee80211_beacon_get_finish+0x3af/0x6f0 net/mac80211/tx.c:5394
__ieee80211_beacon_get+0xd3d/0x1880 net/mac80211/tx.c:-1
ieee80211_beacon_get_tim+0xbd/0x2c0 net/mac80211/tx.c:5807
ieee80211_beacon_get include/net/mac80211.h:5720 [inline]
mac80211_hwsim_beacon_tx+0x3c5/0x870 drivers/net/wireless/virtual/mac80211_hwsim.c:2436
__iterate_interfaces+0x2ab/0x590 net/mac80211/util.c:760
ieee80211_iterate_active_interfaces_atomic+0xdb/0x180 net/mac80211/util.c:796
mac80211_hwsim_beacon+0xbb/0x180 drivers/net/wireless/virtual/mac80211_hwsim.c:2470
__run_hrtimer kernel/time/hrtimer.c:1785 [inline]
__hrtimer_run_queues+0x53a/0xcc0 kernel/time/hrtimer.c:1849
hrtimer_run_softirq+0x182/0x5a0 kernel/time/hrtimer.c:1866
handle_softirqs+0x22a/0x870 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0x5f/0x150 kernel/softirq.c:723
irq_exit_rcu+0x9/0x30 kernel/softirq.c:739
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1056 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1056
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:179 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x47/0x80 kernel/locking/spinlock.c:194
Code: f7 e8 2d dd f0 f5 f7 c3 00 02 00 00 74 05 e8 a0 34 1c f6 9c 58 a9 00 02 00 00 75 27 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 64 9b e2 f5 65 8b 05 0d 40 6a 07 85 c0 74 18 5b 41 5e c3 cc cc
RSP: 0018:ffffc900036f73a8 EFLAGS: 00000206
RAX: 0000000000000006 RBX: 0000000000000246 RCX: 0000000080000001
RDX: 0000000000000006 RSI: ffffffff8df209e8 RDI: 0000000000000001
RBP: ffffc900036f7510 R08: ffffffff90112cb7 R09: 1ffffffff2022596
R10: dffffc0000000000 R11: fffffbfff2022597 R12: ffffffff8fcf1920
R13: dffffc0000000000 R14: ffffffff8fcf1938 R15: ffffc900036f7440
spin_unlock_irqrestore include/linux/spinlock.h:407 [inline]
pneigh_queue_purge+0x368/0x550 net/core/neighbour.c:373
__neigh_ifdown+0x7c2/0x8c0 net/core/neighbour.c:475
neigh_ifdown+0x1f/0x30 net/core/neighbour.c:491
rt6_disable_ip+0x6c8/0x730 net/ipv6/route.c:5019
addrconf_ifdown+0x161/0x1a40 net/ipv6/addrconf.c:3857
addrconf_notify+0x1bc/0x1050 net/ipv6/addrconf.c:-1
notifier_call_chain+0x1be/0x400 kernel/notifier.c:85
call_netdevice_notifiers_extack net/core/dev.c:2288 [inline]
call_netdevice_notifiers net/core/dev.c:2302 [inline]
netif_close_many+0x2ae/0x420 net/core/dev.c:1805
unregister_netdevice_many_notify+0xb47/0x2370 net/core/dev.c:12402
unregister_netdevice_many net/core/dev.c:12495 [inline]
unregister_netdevice_queue+0x31f/0x360 net/core/dev.c:12309
unregister_netdevice include/linux/netdevice.h:3408 [inline]
__tun_detach+0x6d9/0x15d0 drivers/net/tun.c:621
tun_detach drivers/net/tun.c:637 [inline]
tun_chr_close+0x10a/0x1c0 drivers/net/tun.c:3436
__fput+0x44f/0xa70 fs/file_table.c:469
task_work_run+0x1d9/0x270 kernel/task_work.c:233
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
__exit_to_user_mode_loop kernel/entry/common.c:67 [inline]
exit_to_user_mode_loop+0xed/0x480 kernel/entry/common.c:98
__exit_to_user_mode_prepare include/linux/irq-entry-common.h:226 [inline]
syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:256 [inline]
syscall_exit_to_user_mode include/linux/entry-common.h:325 [inline]
do_syscall_64+0x32d/0xf80 arch/x86/entry/syscall_64.c:100
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fc8c299c799
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:00007ffe52fbc0d8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 00007ffe52fbc1c0 RCX: 00007fc8c299c799
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 000000000001e7b9 R08: 0000000000000001 R09: 0000000000000000
R10: 0000001b2f420000 R11: 0000000000000246 R12: 00007ffe52fbc200
R13: 00007fc8c2c15fac R14: 000000000001e878 R15: 00007fc8c2c15fa0
----------------
Code disassembly (best guess):
0: ff 4c 8b 7c decl 0x7c(%rbx,%rcx,4)
4: 24 08 and $0x8,%al
6: 48 8b 44 24 38 mov 0x38(%rsp),%rax
b: 0f b6 04 28 movzbl (%rax,%rbp,1),%eax
f: 84 c0 test %al,%al
11: 0f 85 d3 01 00 00 jne 0x1ea
17: 41 8b 0f mov (%r15),%ecx
1a: 4c 89 f7 mov %r14,%rdi
1d: 48 8b 74 24 18 mov 0x18(%rsp),%rsi
22: 44 8b 44 24 2c mov 0x2c(%rsp),%r8d
27: 45 89 e9 mov %r13d,%r9d
* 2a: 67 48 0f b9 3a ud1 (%edx),%rdi <-- trapping instruction
2f: 4c 8b 74 24 30 mov 0x30(%rsp),%r14
34: e9 81 fe ff ff jmp 0xfffffeba
39: 44 89 f9 mov %r15d,%ecx
3c: 80 e1 07 and $0x7,%cl
3f: 80 .byte 0x80