syzbot

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WARNING: CPU: 0 PID: 5249 at net/mac80211/tx.c:5039 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5039 [inline]
WARNING: CPU: 0 PID: 5249 at net/mac80211/tx.c:5039 __ieee80211_beacon_get+0x1200/0x15c0 net/mac80211/tx.c:5466
Modules linked in:
CPU: 0 PID: 5249 Comm: syz-executor255 Not tainted 6.9.0-rc6-syzkaller-00234-g7367539ad4b0 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5039 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1200/0x15c0 net/mac80211/tx.c:5466
Code: e8 f5 11 a3 f6 eb 0d e8 ee 11 a3 f6 4c 8b bc 24 98 00 00 00 4c 89 ef e8 1e f1 f8 f6 45 31 ed e9 4e fe ff ff e8 d1 11 a3 f6 90 <0f> 0b 90 e9 02 f7 ff ff e8 c3 11 a3 f6 90 0f 0b 90 e9 ea f8 ff ff
RSP: 0018:ffffc90000007a00 EFLAGS: 00010246
RAX: ffffffff8af2fdff RBX: 0000000000000000 RCX: ffff88807d1bbc00
RDX: 0000000080000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff8af2f4fd R09: ffffffff8af2ef00
R10: 0000000000000003 R11: ffff88807d1bbc00 R12: ffff8880739122d0
R13: ffff8880730e8800 R14: ffff888073912750 R15: ffff888073910ca0
FS:  00007f378922f6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000202a3030 CR3: 000000002cb9a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 ieee80211_beacon_get_tim+0xb4/0x320 net/mac80211/tx.c:5593
 ieee80211_beacon_get include/net/mac80211.h:5555 [inline]
 mac80211_hwsim_beacon_tx+0x398/0x7e0 drivers/net/wireless/virtual/mac80211_hwsim.c:2296
 __iterate_interfaces+0x223/0x4c0 net/mac80211/util.c:772
 ieee80211_iterate_active_interfaces_atomic+0xd8/0x170 net/mac80211/util.c:808
 mac80211_hwsim_beacon+0xd4/0x1f0 drivers/net/wireless/virtual/mac80211_hwsim.c:2326
 __run_hrtimer kernel/time/hrtimer.c:1692 [inline]
 __hrtimer_run_queues+0x5a5/0xd50 kernel/time/hrtimer.c:1756
 hrtimer_run_softirq+0x19a/0x2c0 kernel/time/hrtimer.c:1773
 __do_softirq+0x2c6/0x980 kernel/softirq.c:554
 invoke_softirq kernel/softirq.c:428 [inline]
 __irq_exit_rcu+0xf2/0x1c0 kernel/softirq.c:633
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:645
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1043
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:copy_msghdr_from_user+0x4e3/0x680 net/socket.c:2522
Code: 18 48 8d 78 50 ba 10 00 00 00 31 f6 e8 d6 25 b7 f8 49 83 c5 10 4c 89 e8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 12 4c 89 ef e8 e3 22 b7 f8 48 b9 00 00 00 00 00 fc ff df 44 88
RSP: 0018:ffffc9000448f960 EFLAGS: 00000246
RAX: 1ffff92000891f3a RBX: 0000000000000000 RCX: dffffc0000000000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffc9000448fd60
RBP: ffffc9000448fa70 R08: ffffc9000448fd5f R09: 0000000000000000
R10: ffffc9000448fd50 R11: fffff52000891fac R12: 1ffff92000891f3b
R13: ffffc9000448f9d0 R14: ffffc9000448f9d8 R15: 1ffff92000891f00
 recvmsg_copy_msghdr net/socket.c:2769 [inline]
 ___sys_recvmsg net/socket.c:2841 [inline]
 do_recvmmsg+0x40f/0xae0 net/socket.c:2939
 __sys_recvmmsg net/socket.c:3018 [inline]
 __do_sys_recvmmsg net/socket.c:3041 [inline]
 __se_sys_recvmmsg net/socket.c:3034 [inline]
 __x64_sys_recvmmsg+0x199/0x250 net/socket.c:3034
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3789296dc9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 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:00007f378922f228 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007f3789320378 RCX: 00007f3789296dc9
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007f3789320370 R08: 0000000000000000 R09: 00007f378922f6c0
R10: 0000000000000002 R11: 0000000000000246 R12: 00007f378932037c
R13: 00007f37892ed1b4 R14: 0031313230386c6e R15: 00007fff50ef6458
 </TASK>
----------------
Code disassembly (best guess):
   0:	18 48 8d             	sbb    %cl,-0x73(%rax)
   3:	78 50                	js     0x55
   5:	ba 10 00 00 00       	mov    $0x10,%edx
   a:	31 f6                	xor    %esi,%esi
   c:	e8 d6 25 b7 f8       	call   0xf8b725e7
  11:	49 83 c5 10          	add    $0x10,%r13
  15:	4c 89 e8             	mov    %r13,%rax
  18:	48 c1 e8 03          	shr    $0x3,%rax
  1c:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  23:	fc ff df
  26:	80 3c 08 00          	cmpb   $0x0,(%rax,%rcx,1)
* 2a:	74 12                	je     0x3e <-- trapping instruction
  2c:	4c 89 ef             	mov    %r13,%rdi
  2f:	e8 e3 22 b7 f8       	call   0xf8b72317
  34:	48 b9 00 00 00 00 00 	movabs $0xdffffc0000000000,%rcx
  3b:	fc ff df
  3e:	44                   	rex.R
  3f:	88                   	.byte 0x88