syzbot

sched: RT throttling activated
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4558 at net/mac80211/tx.c:4859 __ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
WARNING: CPU: 1 PID: 4558 at net/mac80211/tx.c:4859 __ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5083
Modules linked in:
CPU: 1 PID: 4558 Comm: syz.3.60 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:__ieee80211_beacon_update_cntdwn net/mac80211/tx.c:4859 [inline]
RIP: 0010:__ieee80211_beacon_get+0x179f/0x2000 net/mac80211/tx.c:5083
Code: 2a 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 4b 2a f8 0f 0b e9 03 ef ff ff e8 01 4b 2a f8 <0f> 0b e9 76 f2 ff ff e8 a5 92 6d 00 89 d9 80 e1 07 80 c1 03 38 c1
RSP: 0018:ffffc90000dd08e0 EFLAGS: 00010246
RAX: ffffffff894ed60f RBX: ffff888023126268 RCX: ffff88807cd7d940
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90000dd0b08 R08: ffff88807cd7d940 R09: 0000000000000003
R10: 0000000000000007 R11: 0000000000000100 R12: ffff88807605d000
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff920001ba12c
FS:  00007fe01fdd36c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00002000002bc030 CR3: 000000007f458000 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:5202
 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:__mutex_trylock_common+0x122/0x260 kernel/locking/mutex.c:-1
Code: 3f 48 b8 00 00 00 00 00 fc ff df 0f b6 04 02 84 c0 0f 85 a3 00 00 00 83 3d 5a 6d d1 14 00 75 06 41 83 ff 02 73 51 4c 8b 24 24 <eb> 14 4c 3b 24 24 0f 85 d8 00 00 00 83 e0 03 4c 8b 24 24 49 89 c7
RSP: 0018:ffffc900049074e0 EFLAGS: 00000293
RAX: 0000000000000004 RBX: ffffc90004907520 RCX: ffffffff962daf03
RDX: 1ffffffff2c5b5f0 RSI: 1ffffffff1b142e1 RDI: ffff88807b836538
RBP: ffffc90004907590 R08: ffff88807b83653f R09: 1ffff1100f706ca7
R10: dffffc0000000000 R11: ffffed100f706ca8 R12: ffff88807cd7d940
R13: 1ffff92000920ea0 R14: ffff88807b836538 R15: 0000000000000000
 __mutex_trylock kernel/locking/mutex.c:146 [inline]
 __mutex_lock_common+0x1f1/0x2400 kernel/locking/mutex.c:598
 __mutex_lock kernel/locking/mutex.c:729 [inline]
 mutex_lock_nested+0x17/0x20 kernel/locking/mutex.c:743
 __unix_dgram_recvmsg+0x205/0xd90 net/unix/af_unix.c:2312
 ____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: 0033:0x7fe020792799
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:00007fe01fdd3028 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: ffffffffffffffda RBX: 00007fe020a0c090 RCX: 00007fe020792799
RDX: 0000000000010106 RSI: 00002000000000c0 RDI: 0000000000000003
RBP: 00007fe020828c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe020a0c128 R14: 00007fe020a0c090 R15: 00007ffce6af3d08
 </TASK>
----------------
Code disassembly (best guess), 1 bytes skipped:
   0:	48 b8 00 00 00 00 00 	movabs $0xdffffc0000000000,%rax
   7:	fc ff df
   a:	0f b6 04 02          	movzbl (%rdx,%rax,1),%eax
   e:	84 c0                	test   %al,%al
  10:	0f 85 a3 00 00 00    	jne    0xb9
  16:	83 3d 5a 6d d1 14 00 	cmpl   $0x0,0x14d16d5a(%rip)        # 0x14d16d77
  1d:	75 06                	jne    0x25
  1f:	41 83 ff 02          	cmp    $0x2,%r15d
  23:	73 51                	jae    0x76
  25:	4c 8b 24 24          	mov    (%rsp),%r12
* 29:	eb 14                	jmp    0x3f <-- trapping instruction
  2b:	4c 3b 24 24          	cmp    (%rsp),%r12
  2f:	0f 85 d8 00 00 00    	jne    0x10d
  35:	83 e0 03             	and    $0x3,%eax
  38:	4c 8b 24 24          	mov    (%rsp),%r12
  3c:	49 89 c7             	mov    %rax,%r15