rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P7519/1:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=17081, q=372 ncpus=2)
task:syz.0.366       state:R  running task     stack:26632 pid:7519  tgid:7518  ppid:5811   task_flags:0x400140 flags:0x00080001
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5325 [inline]
 __schedule+0x1190/0x5de0 kernel/sched/core.c:6929
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7256
 irqentry_exit+0x36/0x90 kernel/entry/common.c:211
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_acquire+0x62/0x350 kernel/locking/lockdep.c:5872
Code: a6 08 12 83 f8 07 0f 87 bc 02 00 00 89 c0 48 0f a3 05 22 33 e9 0e 0f 82 74 02 00 00 8b 35 9a 63 e9 0e 85 f6 0f 85 8d 00 00 00 <48> 8b 44 24 30 65 48 2b 05 39 a6 08 12 0f 85 c7 02 00 00 48 83 c4
RSP: 0018:ffffc90019cef7b0 EFLAGS: 00000206
RAX: 0000000000000046 RBX: ffffffff8e3c4720 RCX: 00000000227b4bcb
RDX: 0000000000000000 RSI: ffffffff8da05cdf RDI: ffffffff8bf070c0
RBP: 0000000000000002 R08: f571bb5fae6acf54 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 rcu_read_lock include/linux/rcupdate.h:867 [inline]
 avc_has_perm_noaudit+0x67/0x3b0 security/selinux/avc.c:1155
 avc_has_perm+0xbe/0x1f0 security/selinux/avc.c:1194
 inode_has_perm+0x168/0x1d0 security/selinux/hooks.c:1685
 file_has_perm+0x2e4/0x350 security/selinux/hooks.c:1781
 selinux_revalidate_file_permission security/selinux/hooks.c:3770 [inline]
 selinux_file_permission+0x498/0x660 security/selinux/hooks.c:3791
 security_file_permission+0x1e3/0x210 security/security.c:2913
 rw_verify_area+0xb9/0x6c0 fs/read_write.c:473
 __io_read+0x2b5/0x14b0 io_uring/rw.c:947
 io_read+0x8d/0x1f0 io_uring/rw.c:1031
 __io_issue_sqe+0xe8/0x7c0 io_uring/io_uring.c:1824
 io_issue_sqe+0x85/0x1000 io_uring/io_uring.c:1847
 io_queue_sqe io_uring/io_uring.c:2074 [inline]
 io_submit_sqe io_uring/io_uring.c:2334 [inline]
 io_submit_sqes+0x94d/0x2710 io_uring/io_uring.c:2447
 __do_sys_io_uring_enter+0xd69/0x1630 io_uring/io_uring.c:3514
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f8efa58f6c9
RSP: 002b:00007f8efb395038 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa
RAX: ffffffffffffffda RBX: 00007f8efa7e5fa0 RCX: 00007f8efa58f6c9
RDX: 0000000000000000 RSI: 00000000000847ba RDI: 0000000000000006
RBP: 00007f8efa611f91 R08: 0000000000000000 R09: 0000000000000000
R10: 000000000000000e R11: 0000000000000246 R12: 0000000000000000
R13: 00007f8efa7e6038 R14: 00007f8efa7e5fa0 R15: 00007ffd3a8c3c38
 </TASK>
rcu: rcu_preempt kthread starved for 9854 jiffies! g17081 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->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  running task     stack:28136 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5325 [inline]
 __schedule+0x1190/0x5de0 kernel/sched/core.c:6929
 __schedule_loop kernel/sched/core.c:7011 [inline]
 schedule+0xe7/0x3a0 kernel/sched/core.c:7026
 schedule_timeout+0x123/0x290 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x1ea/0xaf0 kernel/rcu/tree.c:2083
 rcu_gp_kthread+0x26d/0x380 kernel/rcu/tree.c:2285
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </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: 0 Comm: swapper/0 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:pv_native_safe_halt+0xf/0x20 arch/x86/kernel/paravirt.c:82
Code: d7 6c 02 c3 cc cc cc cc 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 66 90 0f 00 2d 23 86 29 00 fb f4 <e9> 3c 0a 03 00 66 2e 0f 1f 84 00 00 00 00 00 66 90 90 90 90 90 90
RSP: 0018:ffffffff8e007df8 EFLAGS: 000002c6
RAX: 0000000000d390e9 RBX: 0000000000000000 RCX: ffffffff8b60a2a9
RDX: 0000000000000000 RSI: ffffffff8da2b6a1 RDI: ffffffff8bf070c0
RBP: fffffbfff1c12f40 R08: 0000000000000001 R09: ffffed1017086655
R10: ffff8880b84332ab R11: 0000000000000001 R12: 0000000000000000
R13: ffffffff8e097a00 R14: ffffffff90820cd0 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff888124a08000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055558c47c5c8 CR3: 0000000031e8b000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 arch_safe_halt arch/x86/include/asm/paravirt.h:107 [inline]
 default_idle+0x13/0x20 arch/x86/kernel/process.c:767
 default_idle_call+0x6c/0xb0 kernel/sched/idle.c:122
 cpuidle_idle_call kernel/sched/idle.c:190 [inline]
 do_idle+0x38d/0x500 kernel/sched/idle.c:330
 cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:428
 rest_init+0x16b/0x2b0 init/main.c:757
 start_kernel+0x3f6/0x4e0 init/main.c:1111
 x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:310
 x86_64_start_kernel+0x130/0x190 arch/x86/kernel/head64.c:291
 common_startup_64+0x13e/0x148
 </TASK>
vkms_vblank_simulate: vblank timer overrun