------------[ cut here ]------------ WARNING: CPU: 1 PID: 6008 at net/mac80211/tx.c:5033 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5033 [inline] WARNING: CPU: 1 PID: 6008 at net/mac80211/tx.c:5033 __ieee80211_beacon_get+0x1141/0x1520 net/mac80211/tx.c:5444 Modules linked in: CPU: 1 PID: 6008 Comm: syz.0.46 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026 RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5033 [inline] RIP: 0010:__ieee80211_beacon_get+0x1141/0x1520 net/mac80211/tx.c:5444 Code: f7 4c 89 ef e8 70 d3 ba f7 45 31 ed 4c 8b bc 24 a0 00 00 00 e9 7f fe ff ff e8 cb f1 7c f7 0f 0b e9 61 f8 ff ff e8 bf f1 7c f7 <0f> 0b e9 85 fb ff ff e8 b3 f1 7c f7 48 c7 c7 00 ae 65 8e 4c 89 e6 RSP: 0018:ffffc900001f0a18 EFLAGS: 00010246 RAX: ffffffff8a09f3b1 RBX: dffffc0000000000 RCX: ffff8880229f0000 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffff8880229f0000 R09: 0000000000000003 R10: 0000000000000007 R11: 0000000000000100 R12: ffff88805cfce440 R13: ffff88805c6ff424 R14: ffff88805cfce930 R15: ffff88805c6ff400 FS: 00007f0ae76ad6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000312db000 CR4: 00000000003506e0 Call Trace: ieee80211_beacon_get_tim+0xbf/0x580 net/mac80211/tx.c:5571 ieee80211_beacon_get include/net/mac80211.h:5440 [inline] mac80211_hwsim_beacon_tx+0x3bd/0x770 drivers/net/wireless/virtual/mac80211_hwsim.c:2265 __iterate_interfaces+0x225/0x4c0 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:1754 [inline] __hrtimer_run_queues+0x525/0xc10 kernel/time/hrtimer.c:1818 hrtimer_run_softirq+0x177/0x290 kernel/time/hrtimer.c:1835 handle_softirqs+0x27d/0x820 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xd3/0x190 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:finish_task_switch+0x267/0x8f0 kernel/sched/core.c:5255 Code: 2e 09 85 c0 0f 84 30 01 00 00 48 85 db 0f 85 4f 01 00 00 e9 d5 04 00 00 4c 89 e7 e8 43 32 38 09 e8 8e 0a 30 00 fb 4c 8b 65 b8 <49> 8d bc 24 f8 15 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 RSP: 0018:ffffc9000512f2a0 EFLAGS: 00000286 RAX: e57aac26bf7b2d00 RBX: 0000000000000000 RCX: e57aac26bf7b2d00 RDX: dffffc0000000000 RSI: ffffffff8acacb60 RDI: ffffffff8b1cfa20 RBP: ffffc9000512f2f0 R08: ffffffff8e8c6b2f R09: 1ffffffff1d18d65 R10: dffffc0000000000 R11: fffffbfff1d18d66 R12: ffff8880229f0000 R13: ffff8880b8f3cfc8 R14: dffffc0000000000 R15: ffff8880b8f3cd48 context_switch kernel/sched/core.c:5384 [inline] __schedule+0x15b6/0x4660 kernel/sched/core.c:6700 schedule+0xbd/0x170 kernel/sched/core.c:6774 schedule_timeout+0xc1/0x2d0 kernel/time/timer.c:2144 unix_wait_for_peer+0x1f6/0x2f0 net/unix/af_unix.c:1515 unix_dgram_sendmsg+0xee4/0x16e0 net/unix/af_unix.c:2107 sock_sendmsg_nosec net/socket.c:730 [inline] __sock_sendmsg net/socket.c:745 [inline] ____sys_sendmsg+0x61b/0x980 net/socket.c:2595 ___sys_sendmsg+0x2a6/0x360 net/socket.c:2649 __sys_sendmmsg+0x2ca/0x510 net/socket.c:2735 __do_sys_sendmmsg net/socket.c:2764 [inline] __se_sys_sendmmsg net/socket.c:2761 [inline] __x64_sys_sendmmsg+0xa0/0xb0 net/socket.c:2761 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f0ae679de59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0ae76ad028 EFLAGS: 00000246 ORIG_RAX: 0000000000000133 RAX: ffffffffffffffda RBX: 00007f0ae6a25fa0 RCX: 00007f0ae679de59 RDX: 0000000000000318 RSI: 00002000000bd000 RDI: 0000000000000004 RBP: 00007f0ae6833e6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f0ae6a26038 R14: 00007f0ae6a25fa0 R15: 00007fffc6c0db88 ---------------- Code disassembly (best guess): 0: 2e 09 85 c0 0f 84 30 cs or %eax,0x30840fc0(%rbp) 7: 01 00 add %eax,(%rax) 9: 00 48 85 add %cl,-0x7b(%rax) c: db 0f fisttpl (%rdi) e: 85 4f 01 test %ecx,0x1(%rdi) 11: 00 00 add %al,(%rax) 13: e9 d5 04 00 00 jmp 0x4ed 18: 4c 89 e7 mov %r12,%rdi 1b: e8 43 32 38 09 call 0x9383263 20: e8 8e 0a 30 00 call 0x300ab3 25: fb sti 26: 4c 8b 65 b8 mov -0x48(%rbp),%r12 * 2a: 49 8d bc 24 f8 15 00 lea 0x15f8(%r12),%rdi <-- trapping instruction 31: 00 32: 48 89 f8 mov %rdi,%rax 35: 48 c1 e8 03 shr $0x3,%rax 39: 42 0f b6 04 30 movzbl (%rax,%r14,1),%eax 3e: 84 c0 test %al,%al