rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P6047/3:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=16425, q=2888 ncpus=2)
task:syz-executor    state:R  running task     stack:25752 pid:6047  tgid:6047  ppid:1      task_flags:0x400140 flags:0x00080002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5387 [inline]
 __schedule+0x169e/0x54f0 kernel/sched/core.c:7188
 preempt_schedule_irq+0x4d/0xa0 kernel/sched/core.c:7512
 irqentry_exit_to_kernel_mode include/linux/irq-entry-common.h:547 [inline]
 irqentry_exit+0x14f/0x730 kernel/entry/common.c:164
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:lock_release+0x2d7/0x3c0 kernel/locking/lockdep.c:5895
Code: ee ce 10 00 00 00 00 eb b5 e8 c5 4c 86 09 f7 c3 00 02 00 00 74 b9 65 48 8b 05 a5 a7 ce 10 48 3b 44 24 28 75 44 fb 48 83 c4 30 <5b> 41 5c 41 5d 41 5e 41 5f 5d e9 0a 12 8a 09 cc 48 8d 3d 22 17 ed
RSP: 0018:ffffc900063cf790 EFLAGS: 00000286
RAX: fc5e1bb2a79b0c00 RBX: 0000000000000287 RCX: 0000000000000046
RDX: 000000001cd4e5c7 RSI: ffffffff8d88124b RDI: ffffffff8ba85de0
RBP: ffff888027a02b80 R08: ffffffff8b2927a0 R09: ffffffff8dfc8180
R10: 0000000000000000 R11: ffffffff84572630 R12: 0000000000000006
R13: 0000000000000006 R14: ffffffff8e181558 R15: ffff888027a01ec0
 rt_spin_unlock+0x29/0x200 kernel/locking/spinlock_rt.c:80
 spin_unlock include/linux/spinlock_rt.h:109 [inline]
 sysctl_is_seen fs/proc/proc_sysctl.c:910 [inline]
 proc_sys_compare+0x1ee/0x230 fs/proc/proc_sysctl.c:935
 d_same_name fs/dcache.c:2292 [inline]
 __d_lookup+0x51f/0x780 fs/dcache.c:2525
 d_lookup+0x7f/0xc0 fs/dcache.c:2461
 lookup_open fs/namei.c:4423 [inline]
 open_last_lookups fs/namei.c:4611 [inline]
 path_openat+0xca0/0x38a0 fs/namei.c:4855
 do_file_open+0x23e/0x4a0 fs/namei.c:4887
 do_sys_openat2+0x113/0x200 fs/open.c:1364
 do_sys_open fs/open.c:1370 [inline]
 __do_sys_openat fs/open.c:1386 [inline]
 __se_sys_openat fs/open.c:1381 [inline]
 __x64_sys_openat+0x138/0x170 fs/open.c:1381
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x15f/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb329aed60e
RSP: 002b:00007ffc004e75c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000555589eec500 RCX: 00007fb329aed60e
RDX: 0000000000080001 RSI: 00007fb329bdd8b4 RDI: ffffffffffffff9c
RBP: 00007fb329bdd8b4 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000004
R13: 00007ffc004e76a0 R14: 00007ffc004e7de8 R15: 0000000000000000
 </TASK>