------------[ cut here ]------------ WARNING: CPU: 1 PID: 0 at net/mac80211/tx.c:5040 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5040 [inline] WARNING: CPU: 1 PID: 0 at net/mac80211/tx.c:5040 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5035 [inline] WARNING: CPU: 1 PID: 0 at net/mac80211/tx.c:5040 __ieee80211_beacon_get+0x149e/0x16e0 net/mac80211/tx.c:5469 Modules linked in: CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.13.0-rc3-syzkaller-00062-gc061cf420ded #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5040 [inline] RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5035 [inline] RIP: 0010:__ieee80211_beacon_get+0x149e/0x16e0 net/mac80211/tx.c:5469 Code: 23 89 ef 44 89 e6 e8 81 d8 fb f6 44 38 e5 72 a2 e8 57 d7 fb f6 48 89 df e8 9f 7a 53 f7 31 db e9 9d fe ff ff e8 43 d7 fb f6 90 <0f> 0b 90 e9 a8 f6 ff ff 48 89 04 24 e8 a1 41 5e f7 48 8b 04 24 e9 RSP: 0018:ffffc900005a0b70 EFLAGS: 00010246 RAX: 0000000000000000 RBX: ffffc900005a0c20 RCX: ffffffff8a9d6e55 RDX: ffff88801cee4880 RSI: ffffffff8a9d77ad RDI: 0000000000000001 RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff8880678ac800 R13: 0000000000000041 R14: ffff888067794d80 R15: ffff8880677969d0 FS: 0000000000000000(0000) GS:ffff88802b500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000000500000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_beacon_get_tim+0xa7/0x280 net/mac80211/tx.c:5596 ieee80211_beacon_get include/net/mac80211.h:5635 [inline] mac80211_hwsim_beacon_tx+0x4ea/0xa10 drivers/net/wireless/virtual/mac80211_hwsim.c:2311 __iterate_interfaces+0x2e5/0x640 net/mac80211/util.c:758 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 net/mac80211/util.c:794 mac80211_hwsim_beacon+0x105/0x200 drivers/net/wireless/virtual/mac80211_hwsim.c:2345 __run_hrtimer kernel/time/hrtimer.c:1739 [inline] __hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1803 hrtimer_run_softirq+0x17d/0x350 kernel/time/hrtimer.c:1820 handle_softirqs+0x213/0x8f0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0x109/0x170 kernel/softirq.c:662 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:default_idle_call+0x99/0xb0 kernel/sched/idle.c:126 Code: 3c 24 e8 ca d6 ff ff e8 65 e9 ff ff 90 e8 2f f1 ff ff bf ff ff ff ff 89 c6 e8 d3 f2 54 f6 e8 ee be 54 f6 e8 f9 cc 86 f6 fb 90 cc cc cc cc 90 0f 0b 90 eb ab 66 2e 0f 1f 84 00 00 00 00 00 66 RSP: 0018:ffffc9000047fe10 EFLAGS: 00000206 RAX: 000000000010f54b RBX: 0000000000000001 RCX: 1ffffffff20393d9 RDX: 0000000000000000 RSI: ffffffff8b4cd180 RDI: ffffffff8bb16d40 RBP: ffffed10039dc910 R08: 0000000000000001 R09: 0000000000000001 R10: ffffffff901ce117 R11: 0000000000000001 R12: 0000000000000001 R13: ffff88801cee4880 R14: ffffffff901ce110 R15: 0000000000000000 cpuidle_idle_call kernel/sched/idle.c:185 [inline] do_idle+0x329/0x3f0 kernel/sched/idle.c:325 cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:423 start_secondary+0x222/0x2b0 arch/x86/kernel/smpboot.c:314 common_startup_64+0x13e/0x148 ---------------- Code disassembly (best guess): 0: 3c 24 cmp $0x24,%al 2: e8 ca d6 ff ff call 0xffffd6d1 7: e8 65 e9 ff ff call 0xffffe971 c: 90 nop d: e8 2f f1 ff ff call 0xfffff141 12: bf ff ff ff ff mov $0xffffffff,%edi 17: 89 c6 mov %eax,%esi 19: e8 d3 f2 54 f6 call 0xf654f2f1 1e: e8 ee be 54 f6 call 0xf654bf11 23: e8 f9 cc 86 f6 call 0xf686cd21 28: fb sti 29: 90 nop * 2a: c3 ret <-- trapping instruction 2b: cc int3 2c: cc int3 2d: cc int3 2e: cc int3 2f: 90 nop 30: 0f 0b ud2 32: 90 nop 33: eb ab jmp 0xffffffe0 35: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) 3c: 00 00 00 3f: 66 data16