------------[ cut here ]------------ no supported rates for sta (null) (0xffffffff, band 0) in rate_mask 0x0 with flags 0x0 WARNING: net/mac80211/rate.c:404 at __rate_control_send_low+0x60c/0x8a0 net/mac80211/rate.c:399, CPU#0: syz.1.1310/10757 Modules linked in: CPU: 0 UID: 0 PID: 10757 Comm: syz.1.1310 Not tainted syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:__rate_control_send_low+0x638/0x8a0 net/mac80211/rate.c:399 Code: 7c 24 10 48 8b 44 24 28 42 0f b6 04 28 84 c0 0f 85 c4 01 00 00 41 8b 0f 4c 89 f7 48 8b 74 24 18 44 8b 44 24 24 44 8b 4c 24 0c <67> 48 0f b9 3a e9 46 fe ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f RSP: 0018:ffffc900000076d8 EFLAGS: 00010246 RAX: 0000000000000000 RBX: 000000000000000c RCX: 0000000000000000 RDX: 00000000ffffffff RSI: 0000000000000000 RDI: ffffffff906a7d20 RBP: ffff888058050f40 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000004 R11: 8000000000000100 R12: ffff888058d8bca8 R13: dffffc0000000000 R14: ffffffff906a7d20 R15: ffff888058053258 FS: 0000000000000000(0000) GS:ffff888124f23000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbc9c2edeb8 CR3: 0000000075dae000 CR4: 00000000003526f0 Call Trace: rate_control_send_low+0x1a7/0x7b0 net/mac80211/rate.c:427 rate_control_get_rate+0x20b/0x5d0 net/mac80211/rate.c:935 ieee80211_beacon_get_finish+0x385/0x6c0 net/mac80211/tx.c:5556 ieee80211_beacon_get_ap+0x19d5/0x20c0 net/mac80211/tx.c:-1 __ieee80211_beacon_get+0x1250/0x1920 net/mac80211/tx.c:5827 ieee80211_beacon_get_tim+0xbd/0x2c0 net/mac80211/tx.c:5969 ieee80211_beacon_get include/net/mac80211.h:5902 [inline] mac80211_hwsim_beacon_tx+0x378/0x820 drivers/net/wireless/virtual/mac80211_hwsim_main.c:2500 __iterate_interfaces+0x2af/0x5a0 net/mac80211/util.c:775 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180 net/mac80211/util.c:811 mac80211_hwsim_beacon+0xaf/0x240 drivers/net/wireless/virtual/mac80211_hwsim_main.c:2536 __run_hrtimer kernel/time/hrtimer.c:2067 [inline] __hrtimer_run_queues+0x3bc/0xa10 kernel/time/hrtimer.c:2124 hrtimer_run_softirq+0x1e3/0x2e0 kernel/time/hrtimer.c:2141 handle_softirqs+0x226/0x860 kernel/softirq.c:645 __do_softirq kernel/softirq.c:679 [inline] invoke_softirq kernel/softirq.c:519 [inline] __irq_exit_rcu+0xcb/0x220 kernel/softirq.c:767 irq_exit_rcu+0x9/0x30 kernel/softirq.c:784 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline] sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674 RIP: 0010:folios_put_refs+0x648/0xb30 mm/swap.c:-1 Code: ba ff 45 84 f6 74 0f e8 86 87 ba ff 4c 89 ef e8 8e 36 3a 00 eb 05 e8 77 87 ba ff 48 bb 00 00 00 00 00 fc ff df 4c 8b 7c 24 18 <4c> 8b 6c 24 28 4c 8b 64 24 20 48 8b 44 24 40 49 89 de 0f b6 04 18 RSP: 0018:ffffc900039a6f80 EFLAGS: 00000293 RAX: ffffffff820c82fd RBX: dffffc0000000000 RCX: ffff88801d72be80 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900039a7090 R08: ffffea0001993277 R09: 1ffffd400033264e R10: dffffc0000000000 R11: fffff9400033264f R12: 0000000000000000 R13: ffffea0001993240 R14: 1ffffd4000332648 R15: ffffc900039a7100 free_pages_and_swap_cache+0x2ba/0x490 mm/swap_state.c:586 __tlb_batch_free_encoded_pages mm/mmu_gather.c:138 [inline] tlb_batch_pages_flush mm/mmu_gather.c:151 [inline] tlb_flush_mmu_free mm/mmu_gather.c:417 [inline] tlb_flush_mmu+0x6d3/0xa30 mm/mmu_gather.c:424 zap_pte_range mm/memory.c:1973 [inline] zap_pmd_range mm/memory.c:2020 [inline] zap_pud_range mm/memory.c:2048 [inline] zap_p4d_range mm/memory.c:2069 [inline] __zap_vma_range+0x412e/0x4f20 mm/memory.c:2109 unmap_vmas+0x390/0x550 mm/memory.c:2178 exit_mmap+0x293/0x9f0 mm/mmap.c:1300 __mmput+0x118/0x420 kernel/fork.c:1193 exit_mm+0x221/0x2d0 kernel/exit.c:615 do_exit+0x6cd/0x2360 kernel/exit.c:997 do_group_exit+0x22d/0x2f0 kernel/exit.c:1152 get_signal+0x121b/0x12c0 kernel/signal.c:3046 arch_do_signal_or_restart+0xbb/0x860 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:66 [inline] exit_to_user_mode_loop+0x10e/0x770 kernel/entry/common.c:101 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:230 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:336 [inline] do_syscall_64+0x328/0x520 arch/x86/entry/syscall_64.c:89 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f3eb699e0d9 Code: Unable to access opcode bytes at 0x7f3eb699e0af. RSP: 002b:00007f3eb786c0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: 0000000000000001 RBX: 00007f3eb6c25fa8 RCX: 00007f3eb699e0d9 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f3eb6c25fac RBP: 00007f3eb6c25fa0 R08: 3fffffffffffffff R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f3eb6c26038 R14: 00007ffdb5bf5620 R15: 00007ffdb5bf5708 ---------------- Code disassembly (best guess): 0: 7c 24 jl 0x26 2: 10 48 8b adc %cl,-0x75(%rax) 5: 44 24 28 rex.R and $0x28,%al 8: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax d: 84 c0 test %al,%al f: 0f 85 c4 01 00 00 jne 0x1d9 15: 41 8b 0f mov (%r15),%ecx 18: 4c 89 f7 mov %r14,%rdi 1b: 48 8b 74 24 18 mov 0x18(%rsp),%rsi 20: 44 8b 44 24 24 mov 0x24(%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 46 fe ff ff jmp 0xfffffe7a 34: 44 89 f1 mov %r14d,%ecx 37: 80 e1 07 and $0x7,%cl 3a: 80 c1 03 add $0x3,%cl 3d: 38 c1 cmp %al,%cl 3f: 0f .byte 0xf