syzbot

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WARNING: CPU: 0 PID: 5134 at net/mac80211/tx.c:5034 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:5034 [inline]
WARNING: CPU: 0 PID: 5134 at net/mac80211/tx.c:5034 __ieee80211_beacon_get+0x1200/0x15c0 net/mac80211/tx.c:5461
Modules linked in:
CPU: 0 PID: 5134 Comm: syz-executor868 Not tainted 6.9.0-rc4-syzkaller-00274-g3b68086599f8 #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:5034 [inline]
RIP: 0010:__ieee80211_beacon_get+0x1200/0x15c0 net/mac80211/tx.c:5461
Code: e8 e5 a8 a3 f6 eb 0d e8 de a8 a3 f6 4c 8b bc 24 98 00 00 00 4c 89 ef e8 1e 4d f9 f6 45 31 ed e9 4e fe ff ff e8 c1 a8 a3 f6 90 <0f> 0b 90 e9 02 f7 ff ff e8 b3 a8 a3 f6 90 0f 0b 90 e9 ea f8 ff ff
RSP: 0018:ffffc90000007a00 EFLAGS: 00010246
RAX: ffffffff8af257af RBX: 0000000000000000 RCX: ffff888029a28000
RDX: 0000000080000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff8af24ead R09: ffffffff8af248b0
R10: 0000000000000003 R11: ffff888029a28000 R12: ffff8880752722d0
R13: ffff888074364000 R14: ffff888075272750 R15: ffff888075270ca0
FS:  00007fae3b6136c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000202e8030 CR3: 000000002996a000 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:5588
 ieee80211_beacon_get include/net/mac80211.h:5552 [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:native_save_fl arch/x86/include/asm/irqflags.h:32 [inline]
RIP: 0010:arch_local_save_flags arch/x86/include/asm/irqflags.h:67 [inline]
RIP: 0010:__might_resched+0x1d9/0x780 kernel/sched/core.c:10161
Code: 00 00 00 4c 89 ee 4d 89 f5 45 89 e6 48 ba 00 00 00 00 00 fc ff df 48 c7 84 24 a0 00 00 00 00 00 00 00 9c 8f 84 24 a0 00 00 00 <80> 3c 13 00 74 15 48 89 f3 e8 19 69 8f 00 48 89 de 48 ba 00 00 00
RSP: 0018:ffffc9000411f7e0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 1ffff92000823f10 RCX: ffff888029a28000
RDX: dffffc0000000000 RSI: ffff888029a28000 RDI: ffffc9000411f880
RBP: ffffc9000411f8f8 R08: ffffffff81e0d3e1 R09: 0000000000000000
R10: ffffc9000411f9c0 R11: fffff52000823f3f R12: 0000000000000000
R13: ffff888029a2843c R14: 000000000000000e R15: 1ffff92000823f04
 __might_fault+0x72/0x120 mm/memory.c:6217
 _copy_from_user+0x2a/0xe0 lib/usercopy.c:14
 copy_from_user include/linux/uaccess.h:183 [inline]
 copy_msghdr_from_user+0xae/0x680 net/socket.c:2514
 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: 0033:0x7fae3b67ae09
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:00007fae3b613228 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007fae3b704378 RCX: 00007fae3b67ae09
RDX: 0000000000010106 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 00007fae3b704370 R08: 0000000000000000 R09: 00007fae3b6136c0
R10: 0000000000000002 R11: 0000000000000246 R12: 00007fae3b70437c
R13: 00007fae3b6d11b4 R14: 0031313230386c6e R15: 00007ffe068f5cf8
 </TASK>
----------------
Code disassembly (best guess):
   0:	00 00                	add    %al,(%rax)
   2:	00 4c 89 ee          	add    %cl,-0x12(%rcx,%rcx,4)
   6:	4d 89 f5             	mov    %r14,%r13
   9:	45 89 e6             	mov    %r12d,%r14d
   c:	48 ba 00 00 00 00 00 	movabs $0xdffffc0000000000,%rdx
  13:	fc ff df
  16:	48 c7 84 24 a0 00 00 	movq   $0x0,0xa0(%rsp)
  1d:	00 00 00 00 00
  22:	9c                   	pushf
  23:	8f 84 24 a0 00 00 00 	pop    0xa0(%rsp)
* 2a:	80 3c 13 00          	cmpb   $0x0,(%rbx,%rdx,1) <-- trapping instruction
  2e:	74 15                	je     0x45
  30:	48 89 f3             	mov    %rsi,%rbx
  33:	e8 19 69 8f 00       	call   0x8f6951
  38:	48 89 de             	mov    %rbx,%rsi
  3b:	48                   	rex.W
  3c:	ba                   	.byte 0xba
  3d:	00 00                	add    %al,(%rax)