------------[ cut here ]------------ WARNING: CPU: 0 PID: 4590 at net/mac80211/tx.c:4851 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4851 [inline] WARNING: CPU: 0 PID: 4590 at net/mac80211/tx.c:4851 __ieee80211_beacon_get+0x172c/0x1f80 net/mac80211/tx.c:5075 Modules linked in: CPU: 0 PID: 4590 Comm: syz.0.63 Not tainted 5.15.186-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 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 71 f6 41 f8 0f 0b 4c 8b 74 24 08 e9 36 fe ff ff e8 60 f6 41 f8 0f 0b e9 3c ef ff ff e8 54 f6 41 f8 <0f> 0b e9 b8 f2 ff ff e8 88 d0 6b 00 44 89 e1 80 e1 07 80 c1 03 38 RSP: 0018:ffffc900000078c0 EFLAGS: 00010246 RAX: ffffffff8935ccbc RBX: ffff88805f024c80 RCX: ffff88807b5d9dc0 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000007ae8 R08: ffff88807b5d9dc0 R09: 0000000000000003 R10: 0000000000000007 R11: 0000000000000100 R12: ffff888076757800 R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000000f28 FS: 00007fb0693b56c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000010e030 CR3: 000000005a04c000 CR4: 00000000003506f0 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:native_save_fl arch/x86/include/asm/irqflags.h:35 [inline] RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:70 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/irqflags.h:106 [inline] RIP: 0010:lock_is_held_type+0x64/0x190 kernel/locking/lockdep.c:5662 Code: 00 00 00 65 48 8b 1d bb cf 60 76 83 bb ec 0a 00 00 00 0f 85 df 00 00 00 41 89 f7 49 89 fe 48 c7 04 24 00 00 00 00 9c 8f 04 24 <4c> 8b 2c 24 fa 48 c7 c7 c0 1f 0b 8a e8 4b 0e 00 00 65 ff 05 c4 d8 RSP: 0018:ffffc9000480f438 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff88807b5d9dc0 RCX: ffff88807b5d9dc0 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff8c11c060 RBP: 00000000ffffffff R08: ffffffff8880dcd1 R09: 0000000000000000 R10: fffff52000901f04 R11: 1ffff92000901f00 R12: dffffc0000000000 R13: 0000000000000000 R14: ffffffff8c11c060 R15: 00000000ffffffff lock_is_held include/linux/lockdep.h:287 [inline] ___might_sleep+0xf2/0x600 kernel/sched/core.c:9605 __mutex_lock_common+0xc1/0x2390 kernel/locking/mutex.c:573 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 __unix_dgram_recvmsg+0x1e1/0xd50 net/unix/af_unix.c:2301 ____sys_recvmsg+0x291/0x580 net/socket.c:-1 ___sys_recvmsg+0x1af/0x4f0 net/socket.c:2697 do_recvmmsg+0x344/0x7a0 net/socket.c:2791 __sys_recvmmsg net/socket.c:2870 [inline] __do_sys_recvmmsg net/socket.c:2893 [inline] __se_sys_recvmmsg net/socket.c:2886 [inline] __x64_sys_recvmmsg+0x18d/0x240 net/socket.c:2886 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: 0033:0x7fb06a166929 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:00007fb0693b5038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007fb06a38e080 RCX: 00007fb06a166929 RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000003 RBP: 00007fb06a1e8b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007fb06a38e080 R15: 00007ffc38435f88 ---------------- Code disassembly (best guess): 0: 00 00 add %al,(%rax) 2: 00 65 48 add %ah,0x48(%rbp) 5: 8b 1d bb cf 60 76 mov 0x7660cfbb(%rip),%ebx # 0x7660cfc6 b: 83 bb ec 0a 00 00 00 cmpl $0x0,0xaec(%rbx) 12: 0f 85 df 00 00 00 jne 0xf7 18: 41 89 f7 mov %esi,%r15d 1b: 49 89 fe mov %rdi,%r14 1e: 48 c7 04 24 00 00 00 movq $0x0,(%rsp) 25: 00 26: 9c pushf 27: 8f 04 24 pop (%rsp) * 2a: 4c 8b 2c 24 mov (%rsp),%r13 <-- trapping instruction 2e: fa cli 2f: 48 c7 c7 c0 1f 0b 8a mov $0xffffffff8a0b1fc0,%rdi 36: e8 4b 0e 00 00 call 0xe86 3b: 65 gs 3c: ff .byte 0xff 3d: 05 .byte 0x5 3e: c4 .byte 0xc4 3f: d8 .byte 0xd8