------------[ cut here ]------------ WARNING: CPU: 1 PID: 10135 at net/mac80211/tx.c:4851 __ieee80211_beacon_get+0x183d/0x2080 net/mac80211/tx.c:5075 Modules linked in: CPU: 1 PID: 10135 Comm: syz.4.1240 Not tainted 5.15.173-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4851 [inline] RIP: 0010:__ieee80211_beacon_get+0x183d/0x2080 net/mac80211/tx.c:5075 Code: ff e8 e7 c9 b4 f7 0f 0b e9 4b fa ff ff e8 db c9 b4 f7 0f 0b e9 3b fe ff ff e8 cf c9 b4 f7 0f 0b e9 06 ee ff ff e8 c3 c9 b4 f7 <0f> 0b e9 91 f0 ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c 2d ea RSP: 0018:ffffc90000dd0840 EFLAGS: 00010246 RAX: ffffffff89cba9dd RBX: 0000000000000000 RCX: ffff88802c76bb80 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000dd0a70 R08: ffffffff89cb9a68 R09: ffffffff89cb943b R10: 0000000000000003 R11: ffff88802c76bb80 R12: dffffc0000000000 R13: ffff88805c6f0c80 R14: ffff88805c6f2298 R15: 1ffff920001ba118 FS: 00007f95bc24c6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8622c4fd58 CR3: 0000000020e5e000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_beacon_get_tim+0xb7/0x950 net/mac80211/tx.c:5194 ieee80211_beacon_get include/net/mac80211.h:4981 [inline] mac80211_hwsim_beacon_tx+0xe2/0x8a0 drivers/net/wireless/mac80211_hwsim.c:1812 __iterate_interfaces+0x21e/0x4b0 net/mac80211/util.c:793 ieee80211_iterate_active_interfaces_atomic+0xaf/0x140 net/mac80211/util.c:829 mac80211_hwsim_beacon+0xa7/0x180 drivers/net/wireless/mac80211_hwsim.c:1865 __run_hrtimer kernel/time/hrtimer.c:1688 [inline] __hrtimer_run_queues+0x598/0xcf0 kernel/time/hrtimer.c:1752 hrtimer_run_softirq+0x196/0x2c0 kernel/time/hrtimer.c:1769 handle_softirqs+0x3a7/0x930 kernel/softirq.c:558 __do_softirq kernel/softirq.c:592 [inline] invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:641 irq_exit_rcu+0x5/0x20 kernel/softirq.c:653 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:finish_lock_switch+0x91/0x100 kernel/sched/core.c:4782 Code: 45 31 c9 68 f7 aa 59 81 e8 9c 11 09 00 48 83 c4 08 4c 89 ff e8 50 db fe ff eb 32 4c 89 ff e8 e6 5a e4 08 e8 c1 46 2d 00 fb 5b <41> 5c 41 5d 41 5e 41 5f c3 44 89 f1 80 e1 07 80 c1 03 38 c1 7c 87 RSP: 0018:ffffc900038bf298 EFLAGS: 00000286 RAX: 91b01ad20448c900 RBX: ffff888017d78034 RCX: ffffffff9686af03 RDX: dffffc0000000000 RSI: ffffffff8a8b2a80 RDI: ffffffff8ad90540 RBP: ffffc900038bf310 R08: ffffffff8186f220 R09: ffffed1017207461 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 1ffff1101722760b R14: ffff8880b913b058 R15: ffff8880b903a300 finish_task_switch+0x134/0x630 kernel/sched/core.c:4899 context_switch kernel/sched/core.c:5030 [inline] __schedule+0x12cc/0x45b0 kernel/sched/core.c:6373 schedule+0x11b/0x1f0 kernel/sched/core.c:6456 schedule_timeout+0xac/0x300 kernel/time/timer.c:1890 unix_wait_for_peer+0x24b/0x330 net/unix/af_unix.c:1304 unix_dgram_sendmsg+0x1441/0x2090 net/unix/af_unix.c:1899 sock_sendmsg_nosec net/socket.c:704 [inline] __sock_sendmsg net/socket.c:716 [inline] ____sys_sendmsg+0x59e/0x8f0 net/socket.c:2436 ___sys_sendmsg+0x252/0x2e0 net/socket.c:2490 __sys_sendmmsg+0x2bf/0x560 net/socket.c:2576 __do_sys_sendmmsg net/socket.c:2605 [inline] __se_sys_sendmmsg net/socket.c:2602 [inline] __x64_sys_sendmmsg+0x9c/0xb0 net/socket.c:2602 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f95bddd4719 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:00007f95bc24c038 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f95bdf8bf80 RCX: 00007f95bddd4719 RDX: ffffffffffffff2b RSI: 00000000200bd000 RDI: 0000000000000007 RBP: 00007f95bde4775e R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f95bdf8bf80 R15: 00007ffd177d7248 ---------------- Code disassembly (best guess): 0: 45 31 c9 xor %r9d,%r9d 3: 68 f7 aa 59 81 push $0xffffffff8159aaf7 8: e8 9c 11 09 00 call 0x911a9 d: 48 83 c4 08 add $0x8,%rsp 11: 4c 89 ff mov %r15,%rdi 14: e8 50 db fe ff call 0xfffedb69 19: eb 32 jmp 0x4d 1b: 4c 89 ff mov %r15,%rdi 1e: e8 e6 5a e4 08 call 0x8e45b09 23: e8 c1 46 2d 00 call 0x2d46e9 28: fb sti 29: 5b pop %rbx * 2a: 41 5c pop %r12 <-- trapping instruction 2c: 41 5d pop %r13 2e: 41 5e pop %r14 30: 41 5f pop %r15 32: c3 ret 33: 44 89 f1 mov %r14d,%ecx 36: 80 e1 07 and $0x7,%cl 39: 80 c1 03 add $0x3,%cl 3c: 38 c1 cmp %al,%cl 3e: 7c 87 jl 0xffffffc7