rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	(detected by 1, t=10506 jiffies, g=42945, q=932 ncpus=2)
rcu: All QSes seen, last rcu_preempt kthread activity 10506 (4294973013-4294962507), jiffies_till_next_fqs=1, root ->qsmask 0x0
rcu: rcu_preempt kthread timer wakeup didn't happen for 10505 jiffies! g42945 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x200
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=19734
rcu: rcu_preempt kthread starved for 10506 jiffies! g42945 f0x2 RCU_GP_WAIT_FQS(5) ->state=0x200 ->cpu=0
rcu: 	Unless rcu_preempt kthread gets sufficient CPU time, OOM is now expected behavior.
rcu: RCU grace-period kthread stack dump:
task:rcu_preempt     state:R stack:27160 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 __schedule+0x1798/0x4cc0
 schedule+0x165/0x360
 schedule_timeout+0x12b/0x270
 rcu_gp_fqs_loop+0x301/0x1540
 rcu_gp_kthread+0x99/0x390
 kthread+0x711/0x8a0
 ret_from_fork+0x3fc/0x770
 ret_from_fork_asm+0x1a/0x30
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 13082 Comm: modprobe Not tainted 6.16.0-syzkaller-11895-gcca7a0aae895-dirty #0 PREEMPT(full) 
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:__kasan_check_write+0x0/0x20
Code: 48 8b 0c 24 31 d2 e9 ef e4 ff ff 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 89 f6 48 8b 0c 24 ba 01 00 00 00 e9 bc e4 ff ff 66 66
RSP: 0000:ffffc9002136fa78 EFLAGS: 00000086
RAX: 00000000ffffffff RBX: ffffffff99d96ba8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff99d96ba8
RBP: ffffc9002136fb30 R08: 0000000000000000 R09: ffffffff84cf7baa
R10: ffffc9002136fbf0 R11: fffff5200426df80 R12: ffffffff99d96bb8
R13: ffffffff99d96bb0 R14: 1ffffffff33b2d77 R15: 1ffffffff33b2d76
FS:  00007fa8677bc380(0000) GS:ffff8880b8624000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fa867aba000 CR3: 000000003a35e000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 do_raw_spin_lock+0x112/0x290
 _raw_spin_lock_irqsave+0xb3/0xf0
 debug_object_deactivate+0x9a/0x250
 debug_deactivate+0x1d/0x200
 __hrtimer_run_queues+0x2b0/0xc60
 hrtimer_interrupt+0x45b/0xaa0
 __sysvec_apic_timer_interrupt+0x10b/0x410
 sysvec_apic_timer_interrupt+0x52/0xc0
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0033:0x7fa867acfee4
Code: 48 89 4c 24 18 4c 89 44 24 08 44 89 4c 24 28 41 0f b6 04 24 4c 89 e2 bd 05 15 00 00 84 c0 74 0f 48 6b ed 21 48 ff c2 48 01 c5 <0f> b6 02 eb ed 48 ff 05 a8 6b 02 00 b8 ff ff ff ff 89 ed 48 83 7c
RSP: 002b:00007ffdf610f470 EFLAGS: 00000202
RAX: 0000000000000074 RBX: 00007fa867abd000 RCX: 00007fa867abd370
RDX: 00007fa8679ff990 RSI: 00007fa867abd000 RDI: 00007fa8679ff989
RBP: 0000d0b4b46f56fe R08: 00007fa867abeb70 R09: 0000000000000001
R10: 00007fa8679fc0d0 R11: 0000000000000007 R12: 00007fa8679ff989
R13: 00007ffdf610f5d8 R14: 00007fa867abb4a0 R15: 00007fa867abeb70
 </TASK>
vkms_vblank_simulate: vblank timer overrun
