------------[ cut here ]------------ WARNING: CPU: 1 PID: 6504 at net/mac80211/tx.c:4944 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4944 [inline] WARNING: CPU: 1 PID: 6504 at net/mac80211/tx.c:4944 __ieee80211_beacon_get+0x1952/0x1f50 net/mac80211/tx.c:5265 Modules linked in: CPU: 1 PID: 6504 Comm: syz.3.504 Not tainted 6.1.148-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:4944 [inline] RIP: 0010:__ieee80211_beacon_get+0x1952/0x1f50 net/mac80211/tx.c:5265 Code: ff ff ff e8 40 21 e5 f7 0f 0b 48 8b 7c 24 20 e8 e4 cf 7f fe e9 dd e9 ff ff e8 2a 21 e5 f7 0f 0b e9 f1 ee ff ff e8 1e 21 e5 f7 <0f> 0b e9 61 f2 ff ff e8 12 21 e5 f7 48 c7 c7 70 5f fa 8d 4c 89 f6 RSP: 0018:ffffc900001e08a0 EFLAGS: 00010246 RAX: ffffffff899b9d42 RBX: 0000000000000000 RCX: ffff88807d48bb80 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900001e0aa8 R08: ffff88807d48bb80 R09: 0000000000000003 R10: 0000000000000007 R11: 0000000000000100 R12: 1ffff9200003c12c R13: dffffc0000000000 R14: ffff888057a0e258 R15: ffff888077dc1000 FS: 00007fbc7f6996c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000110c34df98 CR3: 0000000058702000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_beacon_get_tim+0x5b/0x4d0 net/mac80211/tx.c:5352 ieee80211_beacon_get include/net/mac80211.h:5262 [inline] mac80211_hwsim_beacon_tx+0x21c/0xae0 drivers/net/wireless/mac80211_hwsim.c:2091 __iterate_interfaces+0x243/0x500 net/mac80211/util.c:788 ieee80211_iterate_active_interfaces_atomic+0xd7/0x170 net/mac80211/util.c:824 mac80211_hwsim_beacon+0xb7/0x1b0 drivers/net/wireless/mac80211_hwsim.c:2147 __run_hrtimer kernel/time/hrtimer.c:1752 [inline] __hrtimer_run_queues+0x554/0xd60 kernel/time/hrtimer.c:1816 hrtimer_run_softirq+0x183/0x2a0 kernel/time/hrtimer.c:1833 handle_softirqs+0x2a1/0x920 kernel/softirq.c:596 __do_softirq kernel/softirq.c:630 [inline] invoke_softirq kernel/softirq.c:470 [inline] __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:679 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline] sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1118 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691 RIP: 0010:lock_release+0x13c/0x910 kernel/locking/lockdep.c:-1 Code: 8b 35 58 0b 9f 7e 49 8d 9e dc 0a 00 00 48 89 d8 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 43 05 00 00 83 3b 00 0f 85 4e 04 00 00 <4c> 89 74 24 08 48 c7 84 24 a0 00 00 00 00 00 00 00 9c 8f 84 24 a0 RSP: 0018:ffffc90003ea7b60 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff88807d48c65c RCX: 1bffb3a5aae6b800 RDX: 0000000000000000 RSI: ffffffff8adef680 RDI: ffffffff8adef640 RBP: ffffc90003ea7c70 R08: dffffc0000000000 R09: fffffbfff1c3ea96 R10: fffffbfff1c3ea96 R11: 1ffffffff1c3ea95 R12: 0000000000001738 R13: dffffc0000000000 R14: ffff88807d48bb80 R15: 1ffff920007d4f78 do_recvmmsg+0x382/0x7d0 net/socket.c:2880 __sys_recvmmsg net/socket.c:2953 [inline] __do_sys_recvmmsg net/socket.c:2976 [inline] __se_sys_recvmmsg net/socket.c:2969 [inline] __x64_sys_recvmmsg+0x18d/0x240 net/socket.c:2969 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7fbc7e78ebe9 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:00007fbc7f699038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007fbc7e9b6090 RCX: 00007fbc7e78ebe9 RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000003 RBP: 00007fbc7e811e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fbc7e9b6128 R14: 00007fbc7e9b6090 R15: 00007fff8f51bb98 ---------------- Code disassembly (best guess): 0: 8b 35 58 0b 9f 7e mov 0x7e9f0b58(%rip),%esi # 0x7e9f0b5e 6: 49 8d 9e dc 0a 00 00 lea 0xadc(%r14),%rbx d: 48 89 d8 mov %rbx,%rax 10: 48 c1 e8 03 shr $0x3,%rax 14: 42 0f b6 04 28 movzbl (%rax,%r13,1),%eax 19: 84 c0 test %al,%al 1b: 0f 85 43 05 00 00 jne 0x564 21: 83 3b 00 cmpl $0x0,(%rbx) 24: 0f 85 4e 04 00 00 jne 0x478 * 2a: 4c 89 74 24 08 mov %r14,0x8(%rsp) <-- trapping instruction 2f: 48 c7 84 24 a0 00 00 movq $0x0,0xa0(%rsp) 36: 00 00 00 00 00 3b: 9c pushf 3c: 8f .byte 0x8f 3d: 84 24 a0 test %ah,(%rax,%riz,4)