------------[ cut here ]------------ WARNING: CPU: 0 PID: 8969 at net/mac80211/tx.c:4859 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline] WARNING: CPU: 0 PID: 8969 at net/mac80211/tx.c:4859 __ieee80211_beacon_get+0x172c/0x1f80 net/mac80211/tx.c:5083 Modules linked in: CPU: 0 PID: 8969 Comm: syz.4.854 Not tainted 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:4859 [inline] RIP: 0010:__ieee80211_beacon_get+0x172c/0x1f80 net/mac80211/tx.c:5083 Code: f8 0f 0b e9 f1 fa ff ff e8 51 b6 3a f8 0f 0b 4c 8b 74 24 08 e9 36 fe ff ff e8 40 b6 3a f8 0f 0b e9 3c ef ff ff e8 34 b6 3a f8 <0f> 0b e9 b8 f2 ff ff e8 48 d9 6b 00 44 89 e1 80 e1 07 80 c1 03 38 RSP: 0018:ffffc900000078c0 EFLAGS: 00010246 RAX: ffffffff893d147c RBX: ffff88807cd70c80 RCX: ffff88802707d940 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000007ae8 R08: ffff88802707d940 R09: 0000000000000003 R10: 0000000000000007 R11: 0000000000000100 R12: ffff8880236fe000 R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff92000000f28 FS: 00007fdc26b9f6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f538d48f000 CR3: 000000001e630000 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: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: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:lock_is_held_type+0x9/0x190 kernel/locking/lockdep.c:5651 Code: c0 14 0b 8a 48 c7 c6 00 15 0b 8a e8 c1 37 f5 ff 0f 0b eb bf e8 98 fd ff ff 0f 1f 84 00 00 00 00 00 55 41 57 41 56 41 55 41 54 <53> 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 bd ff ff RSP: 0018:ffffc90002e9fb50 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 1ffff920005d3f78 RCX: ffff88802707d940 RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff8c11c4c0 RBP: ffffc90002e9fc90 R08: dffffc0000000000 R09: fffffbfff1ad3196 R10: fffffbfff1ad3196 R11: 1ffffffff1ad3195 R12: dffffc0000000000 R13: 0000000000000000 R14: 00002000000000c0 R15: dffffc0000000000 lock_is_held include/linux/lockdep.h:287 [inline] ___might_sleep+0xa3/0x600 kernel/sched/core.c:9624 do_recvmmsg+0x51f/0x7a0 net/socket.c:2825 __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: 0033:0x7fdc28958be9 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:00007fdc26b9f038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007fdc28b90090 RCX: 00007fdc28958be9 RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000004 RBP: 00007fdc289dbe19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdc28b90128 R14: 00007fdc28b90090 R15: 00007fff16cae518 ---------------- Code disassembly (best guess): 0: c0 14 0b 8a rclb $0x8a,(%rbx,%rcx,1) 4: 48 c7 c6 00 15 0b 8a mov $0xffffffff8a0b1500,%rsi b: e8 c1 37 f5 ff call 0xfff537d1 10: 0f 0b ud2 12: eb bf jmp 0xffffffd3 14: e8 98 fd ff ff call 0xfffffdb1 19: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1) 20: 00 21: 55 push %rbp 22: 41 57 push %r15 24: 41 56 push %r14 26: 41 55 push %r13 28: 41 54 push %r12 * 2a: 53 push %rbx <-- trapping instruction 2b: 48 83 ec 10 sub $0x10,%rsp 2f: 65 48 8b 04 25 28 00 mov %gs:0x28,%rax 36: 00 00 38: 48 89 44 24 08 mov %rax,0x8(%rsp) 3d: bd .byte 0xbd 3e: ff (bad) 3f: ff .byte 0xff