------------[ cut here ]------------ WARNING: CPU: 0 PID: 6013 at net/mac80211/tx.c:5031 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline] WARNING: CPU: 0 PID: 6013 at net/mac80211/tx.c:5031 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442 Modules linked in: CPU: 0 PID: 6013 Comm: syz.2.42 Not tainted 6.6.102-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:5031 [inline] RIP: 0010:__ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442 Code: 24 4c 89 e7 e8 fe 37 d5 f7 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 89 12 98 f7 0f 0b e9 f6 f7 ff ff e8 7d 12 98 f7 <0f> 0b e9 48 fb ff ff e8 71 12 98 f7 48 c7 c7 c0 00 24 8e 4c 89 e6 RSP: 0000:ffffc90000007a18 EFLAGS: 00010246 RAX: ffffffff89ed78a3 RBX: ffffffff89ed66a6 RCX: ffff888020b5bc00 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffff888020b5bc00 R09: 0000000000000003 R10: 0000000000000007 R11: 0000000000000100 R12: ffff88805d08a3c0 R13: dffffc0000000000 R14: ffff88805d08a8b0 R15: ffff888030924024 FS: 000055558a6ed500(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c42f4b4 CR3: 000000002f346000 CR4: 00000000003506f0 Call Trace: ieee80211_beacon_get_tim+0xb8/0x560 net/mac80211/tx.c:5569 ieee80211_beacon_get include/net/mac80211.h:5438 [inline] mac80211_hwsim_beacon_tx+0x3c7/0x780 drivers/net/wireless/virtual/mac80211_hwsim.c:2265 __iterate_interfaces+0x243/0x500 net/mac80211/util.c:766 ieee80211_iterate_active_interfaces_atomic+0xdb/0x180 net/mac80211/util.c:802 mac80211_hwsim_beacon+0xbb/0x1b0 drivers/net/wireless/virtual/mac80211_hwsim.c:2295 __run_hrtimer kernel/time/hrtimer.c:1755 [inline] __hrtimer_run_queues+0x51e/0xc40 kernel/time/hrtimer.c:1819 hrtimer_run_softirq+0x187/0x2b0 kernel/time/hrtimer.c:1836 handle_softirqs+0x280/0x820 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xc7/0x190 kernel/softirq.c:661 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:__schedule+0x14da/0x44d0 kernel/sched/core.c:6705 Code: d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 4c 79 67 f7 4c 89 33 4c 89 ef 4c 89 f6 e8 3e f1 8a f6 48 89 c7 e8 76 ef e6 f6 <48> c7 84 24 e0 00 00 00 0e 36 e0 45 48 8b 84 24 b8 00 00 00 4a c7 RSP: 0000:ffffc900051d7ce0 EFLAGS: 00000282 RAX: 0000000000000000 RBX: ffff8880b8e3c450 RCX: f8a7a95b72cf9b00 RDX: dffffc0000000000 RSI: ffffffff8aaab9c0 RDI: ffff888020b5d1f8 RBP: ffffc900051d7ee0 R08: ffffffff8e4a882f R09: 1ffffffff1c95105 R10: dffffc0000000000 R11: fffffbfff1c95106 R12: dffffc0000000000 R13: ffff888020b5bc00 R14: ffff88802be43c00 R15: ffff888020b5c140 schedule+0xbd/0x170 kernel/sched/core.c:6773 exit_to_user_mode_loop+0x47/0x110 kernel/entry/common.c:165 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:210 irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:315 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:692 RIP: 0033:0x7f80da468024 Code: 84 00 00 00 00 00 48 8b 4b 08 48 83 c3 08 48 39 d1 72 f3 48 83 e8 08 48 39 f2 73 17 66 2e 0f 1f 84 00 00 00 00 00 48 8b 70 f8 <48> 83 e8 08 48 39 f2 72 f3 48 39 c3 73 3e 48 89 33 48 83 c3 08 48 RSP: 002b:00007ffcca2bcff0 EFLAGS: 00000293 RAX: 00007f80d9828e00 RBX: 00007f80d98163b8 RCX: ffffffff8a5cde63 RDX: ffffffff817ec623 RSI: ffffffff8a5cdf92 RDI: 00007f80d98bf8e8 RBP: 00007f80d9802d08 R08: 00007f80d98612f0 R09: 00007f80da7a2000 R10: 00007f80d97fb008 R11: 000000000000000f R12: 00007f80d9802d00 R13: 000000000000001e R14: 00007ffcca2bd118 R15: 00007f80d97fb008 ---------------- Code disassembly (best guess): 0: d8 48 c1 fmuls -0x3f(%rax) 3: e8 03 42 80 3c call 0x3c80420b 8: 20 00 and %al,(%rax) a: 74 08 je 0x14 c: 48 89 df mov %rbx,%rdi f: e8 4c 79 67 f7 call 0xf7677960 14: 4c 89 33 mov %r14,(%rbx) 17: 4c 89 ef mov %r13,%rdi 1a: 4c 89 f6 mov %r14,%rsi 1d: e8 3e f1 8a f6 call 0xf68af160 22: 48 89 c7 mov %rax,%rdi 25: e8 76 ef e6 f6 call 0xf6e6efa0 * 2a: 48 c7 84 24 e0 00 00 movq $0x45e0360e,0xe0(%rsp) <-- trapping instruction 31: 00 0e 36 e0 45 36: 48 8b 84 24 b8 00 00 mov 0xb8(%rsp),%rax 3d: 00 3e: 4a rex.WX 3f: c7 .byte 0xc7