------------[ cut here ]------------ WARNING: CPU: 1 PID: 4699 at net/mac80211/tx.c:4851 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4851 [inline] WARNING: CPU: 1 PID: 4699 at net/mac80211/tx.c:4851 __ieee80211_beacon_get+0x172c/0x1f80 net/mac80211/tx.c:5075 Modules linked in: CPU: 1 PID: 4699 Comm: syz.1.74 Not tainted 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4851 [inline] RIP: 0010:__ieee80211_beacon_get+0x172c/0x1f80 net/mac80211/tx.c:5075 Code: f8 0f 0b e9 f1 fa ff ff e8 d1 61 3b f8 0f 0b 4c 8b 74 24 08 e9 36 fe ff ff e8 c0 61 3b f8 0f 0b e9 3c ef ff ff e8 b4 61 3b f8 <0f> 0b e9 b8 f2 ff ff e8 f8 ca 6b 00 44 89 e1 80 e1 07 80 c1 03 38 RSP: 0000:ffffc90000dd08c0 EFLAGS: 00010246 RAX: ffffffff893c626c RBX: ffff88805ee64c80 RCX: ffff888026515940 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000dd0ae8 R08: ffff888026515940 R09: 0000000000000003 R10: 0000000000000007 R11: 0000000000000100 R12: ffff88807820f200 R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920001ba128 FS: 00007fc2e795c6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc2e1b3a000 CR3: 000000005dfe8000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_beacon_get_tim+0x48/0x840 net/mac80211/tx.c:5194 ieee80211_beacon_get include/net/mac80211.h:4981 [inline] mac80211_hwsim_beacon_tx+0xf4/0x920 drivers/net/wireless/mac80211_hwsim.c:1812 __iterate_interfaces+0x243/0x500 net/mac80211/util.c:793 ieee80211_iterate_active_interfaces_atomic+0xb3/0x140 net/mac80211/util.c:829 mac80211_hwsim_beacon+0x9b/0x180 drivers/net/wireless/mac80211_hwsim.c:1865 __run_hrtimer kernel/time/hrtimer.c:1690 [inline] __hrtimer_run_queues+0x53d/0xc40 kernel/time/hrtimer.c:1754 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1771 handle_softirqs+0x328/0x820 kernel/softirq.c:576 __do_softirq kernel/softirq.c:610 [inline] invoke_softirq kernel/softirq.c:450 [inline] __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:__handle_mm_fault mm/memory.c:4755 [inline] RIP: 0010:handle_mm_fault+0xbf5/0x43c0 mm/memory.c:4883 Code: ff ff 4c 89 e7 e8 0b b3 0f 00 e9 8d fe ff ff e8 d1 4f cb ff bb 01 00 00 00 e9 db 1d 00 00 48 89 d8 48 c1 e8 03 42 80 3c 28 00 <4c> 8b 74 24 08 74 08 48 89 df e8 ec b2 0f 00 48 8b 1b 48 89 de 48 RSP: 0000:ffffc90003d0fcc0 EFLAGS: 00000246 RAX: 1ffff11003e7710d RBX: ffff88801f3b8868 RCX: ffff888026515940 RDX: 0000000000000002 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90003d0fe70 R08: dffffc0000000000 R09: ffffc90003d0fda4 R10: fffff520007a1fbd R11: 1ffff920007a1fb4 R12: 000000001f3b8001 R13: dffffc0000000000 R14: 000000001f3b8067 R15: 0000000000000000 do_user_addr_fault+0x489/0xc80 arch/x86/mm/fault.c:1357 handle_page_fault arch/x86/mm/fault.c:1445 [inline] exc_page_fault+0x60/0x100 arch/x86/mm/fault.c:1501 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:606 RIP: 0033:0x7fc2e95b6c46 Code: f0 72 6e 48 63 cd 48 01 c1 49 39 4f 08 72 4c 8d 4d ff 85 ed 74 33 66 0f 1f 44 00 00 48 39 f0 72 1b 4d 8b 07 49 89 c1 49 29 f1 <47> 0f b6 0c 08 45 84 c9 74 08 45 88 0c 00 49 8b 47 10 48 83 c0 01 RSP: 002b:00007fc2e795b4a0 EFLAGS: 00010206 RAX: 00000000025fe001 RBX: 00007fc2e795b540 RCX: 0000000000000013 RDX: 0000000000000005 RSI: 0000000000000001 RDI: 00007fc2e795b5e0 RBP: 0000000000000102 R08: 00007fc2df53c000 R09: 00000000025fe000 R10: 0000000000000000 R11: 00007fc2e795b550 R12: 0000000000000001 R13: 00007fc2e9793a20 R14: 0000000000000000 R15: 00007fc2e795b5e0 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: ff 4c 89 e7 decl -0x19(%rcx,%rcx,4) 4: e8 0b b3 0f 00 call 0xfb314 9: e9 8d fe ff ff jmp 0xfffffe9b e: e8 d1 4f cb ff call 0xffcb4fe4 13: bb 01 00 00 00 mov $0x1,%ebx 18: e9 db 1d 00 00 jmp 0x1df8 1d: 48 89 d8 mov %rbx,%rax 20: 48 c1 e8 03 shr $0x3,%rax 24: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) * 29: 4c 8b 74 24 08 mov 0x8(%rsp),%r14 <-- trapping instruction 2e: 74 08 je 0x38 30: 48 89 df mov %rbx,%rdi 33: e8 ec b2 0f 00 call 0xfb324 38: 48 8b 1b mov (%rbx),%rbx 3b: 48 89 de mov %rbx,%rsi 3e: 48 rex.W