------------[ cut here ]------------ WARNING: CPU: 1 PID: 4602 at net/mac80211/tx.c:4859 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline] WARNING: CPU: 1 PID: 4602 at net/mac80211/tx.c:4859 __ieee80211_beacon_get+0x172c/0x1f80 net/mac80211/tx.c:5083 Modules linked in: CPU: 1 PID: 4602 Comm: syz.0.64 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 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 01 51 3a f8 0f 0b 4c 8b 74 24 08 e9 36 fe ff ff e8 f0 50 3a f8 0f 0b e9 3c ef ff ff e8 e4 50 3a f8 <0f> 0b e9 b8 f2 ff ff e8 98 f2 6b 00 44 89 e1 80 e1 07 80 c1 03 38 RSP: 0018:ffffc90000dd08c0 EFLAGS: 00010246 RAX: ffffffff893d7b2c RBX: ffff88802c3f8c80 RCX: ffff88807301bb80 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000dd0ae8 R08: ffff88807301bb80 R09: 0000000000000003 R10: 0000000000000007 R11: 0000000000000100 R12: ffff888026f84a00 R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920001ba128 FS: 00007fdf92d2b6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000010f030 CR3: 000000001d0ef000 CR4: 00000000003506e0 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:1685 [inline] __hrtimer_run_queues+0x53d/0xc40 kernel/time/hrtimer.c:1749 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766 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:__mutex_trylock_common+0x49/0x250 kernel/locking/mutex.c:98 Code: 65 48 8b 04 25 28 00 00 00 48 89 44 24 60 48 bb 00 00 00 00 00 fc ff df 48 c7 44 24 20 b3 8a b5 41 48 c7 44 24 28 53 29 a2 8b <48> c7 44 24 30 e0 3e 5b 81 4c 8d 6c 24 20 49 c1 ed 03 48 b8 f1 f1 RSP: 0018:ffffc90004ec74e0 EFLAGS: 00000282 RAX: 63d7e671f8c52200 RBX: dffffc0000000000 RCX: 63d7e671f8c52200 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffff88807aed6d38 RBP: ffffc90004ec7590 R08: dffffc0000000000 R09: fffffbfff1ff7c2f R10: fffffbfff1ff7c2f R11: 1ffffffff1ff7c2e R12: 0000000000000000 R13: 0000000000000000 R14: ffff88807aed6d38 R15: 0000000000000000 __mutex_trylock kernel/locking/mutex.c:146 [inline] __mutex_lock_common+0x1f9/0x2390 kernel/locking/mutex.c:598 __mutex_lock kernel/locking/mutex.c:729 [inline] mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743 __unix_dgram_recvmsg+0x1e1/0xd50 net/unix/af_unix.c:2312 ____sys_recvmsg+0x291/0x580 net/socket.c:-1 ___sys_recvmsg+0x1af/0x4f0 net/socket.c:2707 do_recvmmsg+0x344/0x7a0 net/socket.c:2801 __sys_recvmmsg net/socket.c:2880 [inline] __do_sys_recvmmsg net/socket.c:2903 [inline] __se_sys_recvmmsg net/socket.c:2896 [inline] __x64_sys_recvmmsg+0x18d/0x240 net/socket.c:2896 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: 0033:0x7fdf936dd749 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:00007fdf92d2b038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007fdf93934090 RCX: 00007fdf936dd749 RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000003 RBP: 00007fdf93761f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fdf93934128 R14: 00007fdf93934090 R15: 00007fff5cca73b8 ---------------- Code disassembly (best guess): 0: 65 48 8b 04 25 28 00 mov %gs:0x28,%rax 7: 00 00 9: 48 89 44 24 60 mov %rax,0x60(%rsp) e: 48 bb 00 00 00 00 00 movabs $0xdffffc0000000000,%rbx 15: fc ff df 18: 48 c7 44 24 20 b3 8a movq $0x41b58ab3,0x20(%rsp) 1f: b5 41 21: 48 c7 44 24 28 53 29 movq $0xffffffff8ba22953,0x28(%rsp) 28: a2 8b * 2a: 48 c7 44 24 30 e0 3e movq $0xffffffff815b3ee0,0x30(%rsp) <-- trapping instruction 31: 5b 81 33: 4c 8d 6c 24 20 lea 0x20(%rsp),%r13 38: 49 c1 ed 03 shr $0x3,%r13 3c: 48 rex.W 3d: b8 .byte 0xb8 3e: f1 int1 3f: f1 int1