rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P28650/1:b..l
rcu: 	(detected by 0, t=10506 jiffies, g=218489, q=1085 ncpus=2)
task:syz.4.5159      state:R  running task     stack:24664 pid:28650 tgid:28649 ppid:27597  task_flags:0x40054c flags:0x00080001
Call Trace:
 <TASK>
 __schedule+0x17b4/0x5680
 preempt_schedule_irq+0x4d/0xa0
 irqentry_exit+0x14f/0x730
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__update_page_owner_free_handle+0x193/0x470
Code: 87 8d 01 00 00 e8 7d dc 8a ff 4c 89 f7 4c 8b 6c 24 28 4c 89 ee e8 cd de 8a ff 4d 39 f5 0f 84 2b 02 00 00 48 8b 2d ad 4b 71 0c <4c> 01 fd 83 3c 24 00 4c 89 7c 24 38 74 37 e8 4a dc 8a ff 4c 89 ff
RSP: 0018:ffffc900075bf040 EFLAGS: 00000202
RAX: ffffffff823ac743 RBX: dffffc0000000000 RCX: ffff88816a59bb00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: 0000000000000008 R08: ffffffff823ac5ee R09: ffffffff8e95cd60
R10: 0000000000000010 R11: ffffffff81b0d880 R12: 00000000001b16eb
R13: 0000000000000001 R14: 0000000000000000 R15: ffff888162c72920
 __reset_page_owner+0x85/0x1f0
 free_unref_folios+0xcec/0x1480
 folios_put_refs+0x9ff/0xb40
 shmem_undo_range+0x52c/0x1660
 shmem_evict_inode+0x289/0xae0
 evict+0x61e/0xb10
 __dentry_kill+0x1a2/0x690
 finish_dput+0xc9/0x480
 __fput+0x691/0xa60
 task_work_run+0x1d9/0x270
 do_exit+0x70f/0x22c0
 do_group_exit+0x21b/0x2d0
 get_signal+0x1284/0x1330
 arch_do_signal_or_restart+0xbc/0x830
 exit_to_user_mode_loop+0x86/0x480
 do_syscall_64+0x33e/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1963b9cdd9
RSP: 002b:00007f1964af90e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: fffffffffffffe00 RBX: 00007f1963e15fa8 RCX: 00007f1963b9cdd9
RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f1963e15fa8
RBP: 00007f1963e15fa0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1963e16038 R14: 00007ffd83fd8dc0 R15: 00007ffd83fd8ea8
 </TASK>
rcu: rcu_preempt kthread starved for 10502 jiffies! g218489 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:26880 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 __schedule+0x17b4/0x5680
 schedule+0x164/0x360
 schedule_timeout+0x158/0x2c0
 rcu_gp_fqs_loop+0x312/0x11d0
 rcu_gp_kthread+0x9e/0x2b0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 28663 Comm: syz.0.5163 Tainted: G             L      syzkaller #0 PREEMPT(full) 
Tainted: [L]=SOFTLOCKUP
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
RIP: 0010:smp_call_function_many_cond+0xfcf/0x13d0
Code: 79 45 8b 2e 44 89 ee 83 e6 01 31 ff e8 fa fc 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 a5 f8 0b 00 eb 37 f3 90 <43> 0f b6 04 2c 84 c0 75 10 41 f7 06 01 00 00 00 74 1e e8 8a f8 0b
RSP: 0018:ffffc90005bef980 EFLAGS: 00000246
RAX: ffffffff81b9ab26 RBX: ffff88812103c148 RCX: 0000000000080000
RDX: ffffc90008ba1000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc90005befab0 R08: ffffffff90309df7 R09: 1ffffffff20613be
R10: dffffc0000000000 R11: ffffffff81745300 R12: 1ffff110478c8169
R13: dffffc0000000000 R14: ffff88823c640b48 R15: 0000000000000001
FS:  00007f0f508fc6c0(0000) GS:ffff88818dc93000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c32d734 CR3: 000000002dcc4000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 clock_was_set+0x70a/0x7d0
 do_adjtimex+0x25d/0x370
 __x64_sys_clock_adjtime+0x252/0x340
 do_syscall_64+0x15f/0xf80
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0f4f99cdd9
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:00007f0f508fc028 EFLAGS: 00000246 ORIG_RAX: 0000000000000131
RAX: ffffffffffffffda RBX: 00007f0f4fc15fa0 RCX: 00007f0f4f99cdd9
RDX: 0000000000000000 RSI: 0000200000001100 RDI: 0000000000000000
RBP: 00007f0f4fa32d69 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f0f4fc16038 R14: 00007f0f4fc15fa0 R15: 00007ffe186f9128
 </TASK>
