------------[ cut here ]------------ WARNING: CPU: 0 PID: 8602 at net/mac80211/tx.c:5040 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5040 [inline] WARNING: CPU: 0 PID: 8602 at net/mac80211/tx.c:5040 __ieee80211_beacon_get+0x1202/0x15c0 net/mac80211/tx.c:5469 Modules linked in: CPU: 0 UID: 0 PID: 8602 Comm: syz.3.562 Not tainted 6.13.0-rc3-next-20241220-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5040 [inline] RIP: 0010:__ieee80211_beacon_get+0x1202/0x15c0 net/mac80211/tx.c:5469 Code: e8 b3 65 52 f6 eb 0d e8 ac 65 52 f6 4c 8b bc 24 98 00 00 00 4c 89 ef e8 5c 3f ad f6 45 31 ed e9 4c fe ff ff e8 8f 65 52 f6 90 <0f> 0b 90 e9 00 f7 ff ff e8 81 65 52 f6 90 0f 0b 90 e9 e8 f8 ff ff RSP: 0018:ffffc900000079e0 EFLAGS: 00010246 RAX: ffffffff8b6cbe91 RBX: 0000000000000000 RCX: ffff888054dfda00 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: dffffc0000000000 R08: ffffffff8b6cb58d R09: ffffffff8b6caf90 R10: 0000000000000003 R11: ffff888054dfda00 R12: ffff88807db32500 R13: ffff88802235b400 R14: ffff88807db329d0 R15: ffff88807db30d80 FS: 00007f6b0a2506c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f0800df5f98 CR3: 0000000033e5c000 CR4: 00000000003526f0 Call Trace: ieee80211_beacon_get_tim+0xb4/0x320 net/mac80211/tx.c:5596 ieee80211_beacon_get include/net/mac80211.h:5635 [inline] mac80211_hwsim_beacon_tx+0x39d/0x850 drivers/net/wireless/virtual/mac80211_hwsim.c:2311 __iterate_interfaces+0x297/0x570 net/mac80211/util.c:758 ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:794 mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2345 __run_hrtimer kernel/time/hrtimer.c:1739 [inline] __hrtimer_run_queues+0x59b/0xd30 kernel/time/hrtimer.c:1803 hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1820 handle_softirqs+0x2d4/0x9b0 kernel/softirq.c:561 __do_softirq kernel/softirq.c:595 [inline] invoke_softirq kernel/softirq.c:435 [inline] __irq_exit_rcu+0xf7/0x220 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+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:do_fault_around mm/memory.c:5344 [inline] RIP: 0010:do_read_fault mm/memory.c:5384 [inline] RIP: 0010:do_fault mm/memory.c:5527 [inline] RIP: 0010:do_pte_missing mm/memory.c:4048 [inline] RIP: 0010:handle_pte_fault+0x186d/0x5ee0 mm/memory.c:5890 Code: 3c 01 00 48 8b 5c 24 50 74 08 48 89 df e8 0b 90 17 00 48 8b 1b 48 89 d8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 08 48 89 df e8 e9 8f 17 00 48 8b 1b 48 89 de 48 83 e6 9f 31 ff RSP: 0018:ffffc90003edf3e0 EFLAGS: 00000246 RAX: 1ffff1100dc44502 RBX: ffff88806e222810 RCX: dffffc0000000000 RDX: ffff888054dfda00 RSI: 0000000000000010 RDI: ffff888079d963e8 RBP: ffffc90003edf6f0 R08: ffffffff820e0e62 R09: 1ffffffff203563e R10: dffffc0000000000 R11: fffffbfff203563f R12: 0000000000000040 R13: 0000000000000050 R14: ffff888079d963e0 R15: 0000000000000050 __handle_mm_fault mm/memory.c:6033 [inline] handle_mm_fault+0x11f5/0x1d50 mm/memory.c:6202 faultin_page mm/gup.c:1196 [inline] __get_user_pages+0x1a92/0x4140 mm/gup.c:1491 populate_vma_page_range+0x264/0x330 mm/gup.c:1929 __mm_populate+0x27a/0x460 mm/gup.c:2032 mm_populate include/linux/mm.h:3400 [inline] vm_mmap_pgoff+0x303/0x430 mm/util.c:585 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f6b09385d29 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f6b0a250038 EFLAGS: 00000246 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 00007f6b09575fa0 RCX: 00007f6b09385d29 RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000000020000000 RBP: 00007f6b09401aa8 R08: ffffffffffffffff R09: 0000000000000000 R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f6b09575fa0 R15: 00007ffd6eece6d8 ---------------- Code disassembly (best guess): 0: 3c 01 cmp $0x1,%al 2: 00 48 8b add %cl,-0x75(%rax) 5: 5c pop %rsp 6: 24 50 and $0x50,%al 8: 74 08 je 0x12 a: 48 89 df mov %rbx,%rdi d: e8 0b 90 17 00 call 0x17901d 12: 48 8b 1b mov (%rbx),%rbx 15: 48 89 d8 mov %rbx,%rax 18: 48 c1 e8 03 shr $0x3,%rax 1c: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 23: fc ff df 26: 80 3c 08 00 cmpb $0x0,(%rax,%rcx,1) * 2a: 74 08 je 0x34 <-- trapping instruction 2c: 48 89 df mov %rbx,%rdi 2f: e8 e9 8f 17 00 call 0x17901d 34: 48 8b 1b mov (%rbx),%rbx 37: 48 89 de mov %rbx,%rsi 3a: 48 83 e6 9f and $0xffffffffffffff9f,%rsi 3e: 31 ff xor %edi,%edi