------------[ cut here ]------------ WARNING: CPU: 0 PID: 6631 at net/mac80211/tx.c:4934 __ieee80211_beacon_get+0x1abc/0x2110 net/mac80211/tx.c:5255 Modules linked in: CPU: 0 PID: 6631 Comm: syz.6.516 Not tainted 6.1.127-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4934 [inline] RIP: 0010:__ieee80211_beacon_get+0x1abc/0x2110 net/mac80211/tx.c:5255 Code: ff ff ff e8 a6 7f 50 f7 0f 0b 48 8b 7c 24 20 e8 ea 31 66 fe e9 6f e8 ff ff e8 90 7f 50 f7 0f 0b e9 92 ed ff ff e8 84 7f 50 f7 <0f> 0b e9 26 f1 ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 0f 8c fc e8 RSP: 0018:ffffc90000007820 EFLAGS: 00010246 RAX: ffffffff8a3a1d1c RBX: 0000000000000000 RCX: ffff8880764cd940 RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90000007a30 R08: ffffffff8a3a0e3c R09: ffffffff8a3a0642 R10: 0000000000000003 R11: ffff8880764cd940 R12: dffffc0000000000 R13: 1ffff92000000f1c R14: ffff888058cba258 R15: ffffffff8a3a0310 FS: 00007f6e624836c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2da15ff8 CR3: 00000000528f6000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ieee80211_beacon_get_tim+0xb1/0x5d0 net/mac80211/tx.c:5342 ieee80211_beacon_get include/net/mac80211.h:5249 [inline] mac80211_hwsim_beacon_tx+0x1d2/0xaa0 drivers/net/wireless/mac80211_hwsim.c:2086 __iterate_interfaces+0x21e/0x4b0 net/mac80211/util.c:788 ieee80211_iterate_active_interfaces_atomic+0xd4/0x170 net/mac80211/util.c:824 mac80211_hwsim_beacon+0xd0/0x1e0 drivers/net/wireless/mac80211_hwsim.c:2142 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x5e5/0xe50 kernel/time/hrtimer.c:1753 hrtimer_run_softirq+0x196/0x2c0 kernel/time/hrtimer.c:1770 handle_softirqs+0x2ee/0xa40 kernel/softirq.c:571 __do_softirq kernel/softirq.c:605 [inline] invoke_softirq kernel/softirq.c:445 [inline] __irq_exit_rcu+0x157/0x240 kernel/softirq.c:654 irq_exit_rcu+0x5/0x20 kernel/softirq.c:666 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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xd4/0x130 kernel/locking/spinlock.c:194 Code: 9c 8f 44 24 20 42 80 3c 23 00 74 08 4c 89 f7 e8 02 f0 24 f7 f6 44 24 21 02 75 4e 41 f7 c7 00 02 00 00 74 01 fb bf 01 00 00 00 f7 4f a1 f6 65 8b 05 98 2f 45 75 85 c0 74 3f 48 c7 04 24 0e 36 RSP: 0018:ffffc900039d75a0 EFLAGS: 00000206 RAX: fcc180146530fe00 RBX: 1ffff9200073aeb8 RCX: ffffffff816b127a RDX: dffffc0000000000 RSI: ffffffff8b0c0340 RDI: 0000000000000001 RBP: ffffc900039d7630 R08: dffffc0000000000 R09: fffffbfff224a061 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 1ffff9200073aeb4 R14: ffffc900039d75c0 R15: 0000000000000246 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline] __skb_try_recv_datagram+0x1c7/0x6a0 net/core/datagram.c:265 __unix_dgram_recvmsg+0x3c1/0x1260 net/unix/af_unix.c:2427 ____sys_recvmsg+0x285/0x530 ___sys_recvmsg net/socket.c:2780 [inline] do_recvmmsg+0x46d/0xad0 net/socket.c:2874 __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+0x195/0x240 net/socket.c:2969 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f6e6158cd29 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:00007f6e62483038 EFLAGS: 00000246 ORIG_RAX: 000000000000012b RAX: ffffffffffffffda RBX: 00007f6e617a6080 RCX: 00007f6e6158cd29 RDX: 03fffffffffffeda RSI: 00000000200000c0 RDI: 0000000000000004 RBP: 00007f6e6160e2a0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f6e617a6080 R15: 00007ffdf17bf8f8 ---------------- Code disassembly (best guess): 0: 9c pushf 1: 8f 44 24 20 pop 0x20(%rsp) 5: 42 80 3c 23 00 cmpb $0x0,(%rbx,%r12,1) a: 74 08 je 0x14 c: 4c 89 f7 mov %r14,%rdi f: e8 02 f0 24 f7 call 0xf724f016 14: f6 44 24 21 02 testb $0x2,0x21(%rsp) 19: 75 4e jne 0x69 1b: 41 f7 c7 00 02 00 00 test $0x200,%r15d 22: 74 01 je 0x25 24: fb sti 25: bf 01 00 00 00 mov $0x1,%edi * 2a: e8 f7 4f a1 f6 call 0xf6a15026 <-- trapping instruction 2f: 65 8b 05 98 2f 45 75 mov %gs:0x75452f98(%rip),%eax # 0x75452fce 36: 85 c0 test %eax,%eax 38: 74 3f je 0x79 3a: 48 rex.W 3b: c7 .byte 0xc7 3c: 04 24 add $0x24,%al 3e: 0e (bad) 3f: 36 ss