------------[ 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#1: ktimers/1/29 Modules linked in: CPU: 1 UID: 0 PID: 29 Comm: ktimers/1 Tainted: G L syzkaller #0 PREEMPT_{RT,(full)} Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 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:ffffc90000a3f410 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 000000000000000c RCX: 0000000000000000 RDX: 00000000ffffffff RSI: 0000000000000000 RDI: ffffffff90c30f50 RBP: ffff888060ef3e20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000100 R11: 0000000000000004 R12: ffff888060ef11e0 R13: ffff88805bb81168 R14: ffffffff90c30f50 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff888124abb000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555777c34e8 CR3: 0000000043b64000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: rate_control_send_low+0x1a7/0x7b0 net/mac80211/rate.c:435 rate_control_get_rate+0x20b/0x5f0 net/mac80211/rate.c:943 ieee80211_beacon_get_finish+0x385/0x6c0 net/mac80211/tx.c:5604 ieee80211_beacon_get_ap+0x1a27/0x2120 net/mac80211/tx.c:-1 __ieee80211_beacon_get+0x1174/0x1820 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+0xb2/0x2b0 drivers/net/wireless/virtual/mac80211_hwsim_main.c:2541 __run_hrtimer kernel/time/hrtimer.c:2074 [inline] __hrtimer_run_queues+0x3eb/0xaf0 kernel/time/hrtimer.c:2131 hrtimer_run_softirq+0x1e1/0x2e0 kernel/time/hrtimer.c:2148 handle_softirqs+0x1da/0x6d0 kernel/softirq.c:645 __do_softirq kernel/softirq.c:679 [inline] run_ktimerd+0x6a/0x100 kernel/softirq.c:1174 smpboot_thread_fn+0x565/0xa70 kernel/smpboot.c:160 kthread+0x38b/0x470 kernel/kthread.c:436 ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 ---------------- 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