syzbot

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WARNING: CPU: 1 PID: 4551 at net/mac80211/tx.c:4934 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4934 [inline]
WARNING: CPU: 1 PID: 4551 at net/mac80211/tx.c:4934 __ieee80211_beacon_get+0x1952/0x1f50 net/mac80211/tx.c:5255
Modules linked in:
CPU: 1 PID: 4551 Comm: syz-executor146 Not tainted 6.1.138-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4934 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1952/0x1f50 net/mac80211/tx.c:5255
Code: ff ff ff e8 d0 45 ec f7 0f 0b 48 8b 7c 24 20 e8 34 9e 7f fe e9 dd e9 ff ff e8 ba 45 ec f7 0f 0b e9 f1 ee ff ff e8 ae 45 ec f7 <0f> 0b e9 61 f2 ff ff e8 a2 45 ec f7 48 c7 c7 b0 96 d9 8d 4c 89 f6
RSP: 0018:ffffc900001e08a0 EFLAGS: 00010246
RAX: ffffffff89948e02 RBX: 0000000000000000 RCX: ffff8880772d8000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc900001e0aa8 R08: ffff8880772d8000 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: 1ffff9200003c12c
R13: dffffc0000000000 R14: ffff88806e936258 R15: ffff88801928c200
FS:  00007ff6459956c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000072030 CR3: 000000002ef0c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0x5b/0x4d0 net/mac80211/tx.c:5342
 ieee80211_beacon_get include/net/mac80211.h:5262 [inline]
 mac80211_hwsim_beacon_tx+0x21c/0xae0 drivers/net/wireless/mac80211_hwsim.c:2086
 __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:2142
 __run_hrtimer kernel/time/hrtimer.c:1691 [inline]
 __hrtimer_run_queues+0x522/0xc80 kernel/time/hrtimer.c:1755
 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1772
 handle_softirqs+0x2a1/0x920 kernel/softirq.c:578
 __do_softirq kernel/softirq.c:612 [inline]
 invoke_softirq kernel/softirq.c:452 [inline]
 __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:661
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:673
 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
 </IRQ>
 <TASK>
 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+0xa5/0x100 kernel/locking/spinlock.c:194
Code: 74 05 e8 ae e3 6d f7 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 36 5e 3e f7 65 8b 05 37 23 e9 75 85 c0 74 3c 48 c7 04 24 0e 36
RSP: 0018:ffffc90004b8f5c0 EFLAGS: 00000206
RAX: 29efe491a3153a00 RBX: 0000000000000a06 RCX: 29efe491a3153a00
RDX: dffffc0000000000 RSI: ffffffff8a6bfe00 RDI: 0000000000000001
RBP: ffffc90004b8f658 R08: dffffc0000000000 R09: fffffbfff211705d
R10: fffffbfff211705d R11: 1ffffffff211705c R12: dffffc0000000000
R13: 1ffff11004cf3b46 R14: ffff88802679d9d0 R15: 1ffff92000971eb8
 spin_unlock_irqrestore include/linux/spinlock.h:406 [inline]
 __skb_try_recv_datagram+0x179/0x4d0 net/core/datagram.c:265
 __unix_dgram_recvmsg+0x2d3/0xd50 net/unix/af_unix.c:2427
 ____sys_recvmsg+0x292/0x580 net/socket.c:-1
 ___sys_recvmsg+0x1b2/0x510 net/socket.c:2780
 do_recvmmsg+0x359/0x7d0 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+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: 0033:0x7ff6459f7829
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 91 1a 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff645995218 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007ff645a81438 RCX: 00007ff6459f7829
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000003
RBP: 00007ff645a81430 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 00007ff645a4e38c
R13: 00002000000001c0 R14: 0000200000000200 R15: 0000200000000210
 </TASK>
----------------
Code disassembly (best guess):
   0:	74 05                	je     0x7
   2:	e8 ae e3 6d f7       	call   0xf76de3b5
   7:	48 c7 44 24 20 00 00 	movq   $0x0,0x20(%rsp)
   e:	00 00
  10:	9c                   	pushf
  11:	8f 44 24 20          	pop    0x20(%rsp)
  15:	f6 44 24 21 02       	testb  $0x2,0x21(%rsp)
  1a:	75 4b                	jne    0x67
  1c:	f7 c3 00 02 00 00    	test   $0x200,%ebx
  22:	74 01                	je     0x25
  24:	fb                   	sti
  25:	bf 01 00 00 00       	mov    $0x1,%edi
* 2a:	e8 36 5e 3e f7       	call   0xf73e5e65 <-- trapping instruction
  2f:	65 8b 05 37 23 e9 75 	mov    %gs:0x75e92337(%rip),%eax        # 0x75e9236d
  36:	85 c0                	test   %eax,%eax
  38:	74 3c                	je     0x76
  3a:	48                   	rex.W
  3b:	c7                   	.byte 0xc7
  3c:	04 24                	add    $0x24,%al
  3e:	0e                   	(bad)
  3f:	36                   	ss