------------[ cut here ]------------ WARNING: CPU: 1 PID: 6257 at net/mac80211/tx.c:5031 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5031 [inline] WARNING: CPU: 1 PID: 6257 at net/mac80211/tx.c:5031 __ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442 Modules linked in: CPU: 1 PID: 6257 Comm: syz.2.89 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:5031 [inline] RIP: 0010:__ieee80211_beacon_get+0x1233/0x1600 net/mac80211/tx.c:5442 Code: 24 4c 89 e7 e8 0e 88 d4 f7 45 31 f6 4c 8b bc 24 a0 00 00 00 e9 7a fe ff ff e8 19 65 97 f7 0f 0b e9 f6 f7 ff ff e8 0d 65 97 f7 <0f> 0b e9 48 fb ff ff e8 01 65 97 f7 48 c7 c7 a0 09 24 8e 4c 89 e6 RSP: 0018:ffffc900001f0a18 EFLAGS: 00010246 RAX: ffffffff89ee2a93 RBX: ffffffff89ee1896 RCX: ffff8880210eda00 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000000 R08: ffff8880210eda00 R09: 0000000000000003 R10: 0000000000000007 R11: 0000000000000100 R12: ffff88805bc6a3c0 R13: dffffc0000000000 R14: ffff88805bc6a8b0 R15: ffff88802ff73024 FS: 00007fcac45716c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcac452ef98 CR3: 0000000024281000 CR4: 00000000003506e0 Call Trace: ieee80211_beacon_get_tim+0xb8/0x560 net/mac80211/tx.c:5569 ieee80211_beacon_get include/net/mac80211.h:5440 [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:debug_smp_processor_id+0xb/0x20 lib/smp_processor_id.c:60 Code: e3 f9 e9 64 ff ff ff 48 c7 c7 00 46 dd 8c 4c 89 f6 e8 09 78 e3 f9 e9 6e ff ff ff cc cc cc cc f3 0f 1e fa 48 c7 c7 e0 6f fc 8a <48> c7 c6 20 70 fc 8a eb 0c 66 2e 0f 1f 84 00 00 00 00 00 66 90 55 RSP: 0018:ffffc9000bde7458 EFLAGS: 00000283 RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff816700fc RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8afc6fe0 RBP: ffffc9000bde7588 R08: ffffffff8e4a8f2f R09: 1ffffffff1c951e5 R10: dffffc0000000000 R11: fffffbfff1c951e6 R12: 1ffff920017bce9c R13: ffff88807a734d90 R14: 0000000000000001 R15: dffffc0000000000 rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline] rcu_is_watching+0x15/0xb0 kernel/rcu/tree.c:700 trace_lock_acquire include/trace/events/lock.h:24 [inline] lock_acquire+0xcb/0x410 kernel/locking/lockdep.c:5725 __mutex_lock_common kernel/locking/mutex.c:603 [inline] __mutex_lock+0x129/0xcc0 kernel/locking/mutex.c:747 __unix_dgram_recvmsg+0x1e3/0xd60 net/unix/af_unix.c:2407 sock_recvmsg_nosec+0x82/0xd0 net/socket.c:1046 ____sys_recvmsg+0x49b/0x5b0 net/socket.c:2812 ___sys_recvmsg+0x1b6/0x510 net/socket.c:2856 do_recvmmsg+0x360/0x7d0 net/socket.c:2950 __sys_recvmmsg net/socket.c:3029 [inline] __do_sys_recvmmsg net/socket.c:3052 [inline] __se_sys_recvmmsg net/socket.c:3045 [inline] __x64_sys_recvmmsg+0x191/0x240 net/socket.c:3045 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fcac378ebe9 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:00007fcac4571038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007fcac39c6090 RCX: 00007fcac378ebe9 RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000005 RBP: 00007fcac3811e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fcac39c6128 R14: 00007fcac39c6090 R15: 00007ffd7c162398 ---------------- Code disassembly (best guess): 0: e3 f9 jrcxz 0xfffffffb 2: e9 64 ff ff ff jmp 0xffffff6b 7: 48 c7 c7 00 46 dd 8c mov $0xffffffff8cdd4600,%rdi e: 4c 89 f6 mov %r14,%rsi 11: e8 09 78 e3 f9 call 0xf9e3781f 16: e9 6e ff ff ff jmp 0xffffff89 1b: cc int3 1c: cc int3 1d: cc int3 1e: cc int3 1f: f3 0f 1e fa endbr64 23: 48 c7 c7 e0 6f fc 8a mov $0xffffffff8afc6fe0,%rdi * 2a: 48 c7 c6 20 70 fc 8a mov $0xffffffff8afc7020,%rsi <-- trapping instruction 31: eb 0c jmp 0x3f 33: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1) 3a: 00 00 00 3d: 66 90 xchg %ax,%ax 3f: 55 push %rbp