syzbot

hrtimer: interrupt took 39863 ns
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4745 at net/mac80211/tx.c:4861 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4861 [inline]
WARNING: CPU: 1 PID: 4745 at net/mac80211/tx.c:4861 __ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5085
Modules linked in:
CPU: 1 PID: 4745 Comm: syz.2.118 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4861 [inline]
RIP: 0010:__ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5085
Code: 29 f8 0f 0b 4f 89 64 2f 04 4f 89 64 2f 0c 43 c6 44 2f 14 f8 e9 19 fe ff ff e8 0d 87 29 f8 0f 0b e9 03 ef ff ff e8 01 87 29 f8 <0f> 0b e9 76 f2 ff ff e8 25 b8 6d 00 89 d9 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc90000dd08e0 EFLAGS: 00010246
RAX: ffffffff894fc1ef RBX: ffff888024b6e268 RCX: ffff88807f605940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000dd0b08 R08: ffff88807f605940 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff888028b21600
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920001ba12c
FS:  00007f503572c6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000020000036a030 CR3: 0000000059150000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0x48/0x840 net/mac80211/tx.c:5204
 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+0x4f2/0xb70 kernel/time/hrtimer.c:1749
 hrtimer_run_softirq+0x176/0x240 kernel/time/hrtimer.c:1766
 handle_softirqs+0x339/0x830 kernel/softirq.c:576
 __do_softirq kernel/softirq.c:610 [inline]
 invoke_softirq kernel/softirq.c:450 [inline]
 __irq_exit_rcu+0x13b/0x230 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
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:331 [inline]
RIP: 0010:rcu_is_watching+0xc/0xa0 kernel/rcu/tree.c:1123
Code: 65 e8 5b 41 5e 41 5f 5d c3 e8 e0 85 58 08 41 f7 c7 00 02 00 00 75 bd eb bc e8 c0 85 58 08 41 57 41 56 53 65 ff 05 5c 7b 9d 7e <e8> bf 95 58 08 89 c3 83 f8 08 73 5c 49 bf 00 00 00 00 00 fc ff df
RSP: 0018:ffffc9000392f520 EFLAGS: 00000283
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff815da814
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8d8a06e8
RBP: ffffc9000392f650 R08: ffffffff8d8a06ef R09: 1ffffffff1b140dd
R10: dffffc0000000000 R11: fffffbfff1b140de R12: 1ffff92000725eb4
R13: dffffc0000000000 R14: ffff88802a23f538 R15: ffffc9000392f6c0
 trace_lock_release include/trace/events/lock.h:58 [inline]
 lock_release+0xb5/0x8a0 kernel/locking/lockdep.c:5634
 __mutex_unlock_slowpath+0xc8/0x6c0 kernel/locking/mutex.c:851
 __unix_dgram_recvmsg+0xa0b/0xd90 net/unix/af_unix.c:2396
 ____sys_recvmsg+0x2cd/0x5e0 net/socket.c:-1
 ___sys_recvmsg+0x21a/0x5c0 net/socket.c:2706
 do_recvmmsg+0x382/0x850 net/socket.c:2800
 __sys_recvmmsg net/socket.c:2879 [inline]
 __do_sys_recvmmsg net/socket.c:2902 [inline]
 __se_sys_recvmmsg net/socket.c:2895 [inline]
 __x64_sys_recvmmsg+0x195/0x250 net/socket.c:2895
 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: 0033:0x7f50360ebe59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f503572c028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f5036365090 RCX: 00007f50360ebe59
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000003
RBP: 00007f5036181d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f5036365128 R14: 00007f5036365090 R15: 00007ffec09787d8
 </TASK>
----------------
Code disassembly (best guess):
   0:	65 e8 5b 41 5e 41    	gs call 0x415e4161
   6:	5f                   	pop    %rdi
   7:	5d                   	pop    %rbp
   8:	c3                   	ret
   9:	e8 e0 85 58 08       	call   0x85885ee
   e:	41 f7 c7 00 02 00 00 	test   $0x200,%r15d
  15:	75 bd                	jne    0xffffffd4
  17:	eb bc                	jmp    0xffffffd5
  19:	e8 c0 85 58 08       	call   0x85885de
  1e:	41 57                	push   %r15
  20:	41 56                	push   %r14
  22:	53                   	push   %rbx
  23:	65 ff 05 5c 7b 9d 7e 	incl   %gs:0x7e9d7b5c(%rip)        # 0x7e9d7b86
* 2a:	e8 bf 95 58 08       	call   0x85895ee <-- trapping instruction
  2f:	89 c3                	mov    %eax,%ebx
  31:	83 f8 08             	cmp    $0x8,%eax
  34:	73 5c                	jae    0x92
  36:	49 bf 00 00 00 00 00 	movabs $0xdffffc0000000000,%r15
  3d:	fc ff df