------------[ cut here ]------------ WARNING: CPU: 1 PID: 5818 at net/mac80211/tx.c:4859 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline] WARNING: CPU: 1 PID: 5818 at net/mac80211/tx.c:4859 __ieee80211_beacon_get+0x172c/0x1f80 net/mac80211/tx.c:5083 Modules linked in: CPU: 1 PID: 5818 Comm: modprobe Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline] RIP: 0010:__ieee80211_beacon_get+0x172c/0x1f80 net/mac80211/tx.c:5083 Code: f8 0f 0b e9 f1 fa ff ff e8 f1 c2 41 f8 0f 0b 4c 8b 74 24 08 e9 36 fe ff ff e8 e0 c2 41 f8 0f 0b e9 3c ef ff ff e8 d4 c2 41 f8 <0f> 0b e9 b8 f2 ff ff e8 f8 dd 6b 00 44 89 e1 80 e1 07 80 c1 03 38 RSP: 0018:ffffc90000dd08c0 EFLAGS: 00010246 RAX: ffffffff8936093c RBX: ffff88805f8c8c80 RCX: ffff88802be31dc0 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000dd0ae8 R08: ffff88802be31dc0 R09: 0000000000000003 R10: 0000000000000007 R11: 0000000000000100 R12: ffff88805dade600 R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920001ba128 FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ff3adbd0e9c CR3: 0000000051df8000 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:5202 ieee80211_beacon_get include/net/mac80211.h:4983 [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:1685 [inline] __hrtimer_run_queues+0x53d/0xc40 kernel/time/hrtimer.c:1749 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766 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:check_kcov_mode kernel/kcov.c:183 [inline] RIP: 0010:write_comp_data kernel/kcov.c:227 [inline] RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x32/0x80 kernel/kcov.c:300 Code: c4 9f 8a 7e 65 8b 15 c5 9f 8a 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 57 83 b9 34 16 00 00 00 74 4e 8b 91 10 16 00 00 <83> fa 03 75 43 48 8b 91 18 16 00 00 44 8b 89 14 16 00 00 49 c1 e1 RSP: 0018:ffffc9000398f898 EFLAGS: 00000246 RAX: ffffffff81abae86 RBX: 0000000000000000 RCX: ffff88802be31dc0 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc9000398fa10 R08: dffffc0000000000 R09: ffffed10057c63b9 R10: ffffed10057c63b9 R11: 1ffff110057c63b8 R12: 1ffff1100e53e70e R13: ffffc9000398fb80 R14: 00007ff3adf0f000 R15: 000000000bde9025 zap_pte_range mm/memory.c:1354 [inline] zap_pmd_range mm/memory.c:1505 [inline] zap_pud_range mm/memory.c:1534 [inline] zap_p4d_range mm/memory.c:1555 [inline] unmap_page_range+0xa66/0x2520 mm/memory.c:1576 unmap_vmas+0x11b/0x230 mm/memory.c:1653 exit_mmap+0x38f/0x5f0 mm/mmap.c:3216 __mmput+0x115/0x3b0 kernel/fork.c:1127 exit_mm+0x567/0x6c0 kernel/exit.c:550 do_exit+0x5a1/0x20a0 kernel/exit.c:870 do_group_exit+0x12e/0x300 kernel/exit.c:997 __do_sys_exit_group kernel/exit.c:1008 [inline] __se_sys_exit_group kernel/exit.c:1006 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1006 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7ff3add2f6c5 Code: Unable to access opcode bytes at RIP 0x7ff3add2f69b. RSP: 002b:00007ffc933faa98 EFLAGS: 00000202 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007ff3ade30fe8 RCX: 00007ff3add2f6c5 RDX: 00000000000000e7 RSI: ffffffffffffff88 RDI: 0000000000000001 RBP: 0000000000000001 R08: 00007ffc933faa28 R09: 0000000000000000 R10: 00007ffc933fa8c0 R11: 0000000000000202 R12: 0000000000000000 R13: 0000000000000001 R14: 00007ff3ade2f680 R15: 00007ff3ade31000 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 9f lahf 1: 8a 7e 65 mov 0x65(%rsi),%bh 4: 8b 15 c5 9f 8a 7e mov 0x7e8a9fc5(%rip),%edx # 0x7e8a9fcf a: 81 e2 00 01 ff 00 and $0xff0100,%edx 10: 74 11 je 0x23 12: 81 fa 00 01 00 00 cmp $0x100,%edx 18: 75 57 jne 0x71 1a: 83 b9 34 16 00 00 00 cmpl $0x0,0x1634(%rcx) 21: 74 4e je 0x71 23: 8b 91 10 16 00 00 mov 0x1610(%rcx),%edx * 29: 83 fa 03 cmp $0x3,%edx <-- trapping instruction 2c: 75 43 jne 0x71 2e: 48 8b 91 18 16 00 00 mov 0x1618(%rcx),%rdx 35: 44 8b 89 14 16 00 00 mov 0x1614(%rcx),%r9d 3c: 49 rex.WB 3d: c1 .byte 0xc1 3e: e1 .byte 0xe1