rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=715c/1/0x4000000000000000 softirq=190735/190736 fqs=51
rcu: 	(detected by 1, t=10502 jiffies, g=330353, q=1132 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 12903 Comm: syz.7.11879 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:do_raw_spin_unlock+0xf3/0x210
Code: 4c 89 f7 e8 cf ba 8e 00 49 c7 06 ff ff ff ff 42 0f b6 44 25 00 84 c0 0f 85 fd 00 00 00 c7 43 08 ff ff ff ff 48 89 df c6 07 00 <0f> 1f 00 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc cc e8 85 8e
RSP: 0018:ffffc90000007d88 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff888121028280 RCX: 0000000000000000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffff888121028280
RBP: 1ffff11024205051 R08: ffff888121028283 R09: 1ffff11024205050
R10: dffffc0000000000 R11: ffffed1024205051 R12: dffffc0000000000
R13: 1ffff11024205052 R14: ffff888121028290 R15: ffff888121028288
FS:  00007f5714bf66c0(0000) GS:ffff88818dc90000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000110c291eb9 CR3: 0000000189d0c000 CR4: 00000000000006f0
Call Trace:
 <IRQ>
 _raw_spin_unlock_irqrestore+0x23/0x80
 __hrtimer_run_queues+0x2c3/0xa20
 hrtimer_interrupt+0x44b/0x950
 __sysvec_apic_timer_interrupt+0x102/0x430
 sysvec_apic_timer_interrupt+0xa1/0xc0
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20
RIP: 0010:__set_page_owner+0x47/0x4c0
Code: d3 89 74 24 10 48 89 7c 24 08 65 48 8b 05 81 12 fe 10 48 89 44 24 60 49 bd 00 00 00 00 00 fc ff df 48 c7 44 24 20 b3 8a b5 41 <48> c7 44 24 28 c3 04 13 8e 48 c7 44 24 30 70 ed 3a 82 48 8d 4c 24
RSP: 0018:ffffc900088561c0 EFLAGS: 00000286
RAX: 7509db9b7c03a500 RBX: 0000000000140cca RCX: 0000000000000000
RDX: 0000000000140cca RSI: 0000000000000000 RDI: ffffea00047a8c80
RBP: ffffc90008856278 R08: ffffffff9030b1f7 R09: 0000000000000000
R10: ffffed1023d46400 R11: fffffbfff206163f R12: ffff88811ea32000
R13: dffffc0000000000 R14: ffffea00047a8c80 R15: 0000000000000001
 post_alloc_hook+0x1f9/0x250
 get_page_from_freelist+0x24ba/0x2540
 __alloc_frozen_pages_noprof+0x18d/0x380
 alloc_pages_mpol+0x235/0x490
 folio_alloc_mpol_noprof+0x39/0x160
 shmem_alloc_and_add_folio+0x442/0xf80
 shmem_get_folio_gfp+0x5a9/0x1670
 shmem_write_begin+0x16c/0x330
 generic_perform_write+0x2e2/0x8f0
 shmem_file_write_iter+0xf8/0x120
 __kernel_write_iter+0x41e/0x880
 dump_user_range+0xc19/0x12c0
 elf_core_dump+0x34c2/0x3ad0
 coredump_write+0x1216/0x1910
 vfs_coredump+0x3807/0x4530
 get_signal+0x1107/0x1330
 arch_do_signal_or_restart+0xbc/0x830
 irqentry_exit+0x284/0x730
 exc_general_protection+0x16b/0x1f0
 asm_exc_general_protection+0x26/0x30
RIP: 0033:0x7f571699cde1
Code: 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 83 c8 ff c3 66 2e 0f 1f
RSP: 002b:0000200000000280 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f5716c15fa0 RCX: 00007f571699cdd9
RDX: 00002000000002c0 RSI: 0000200000000280 RDI: 0000000004124000
RBP: 00007f5716a32d69 R08: 0000200000000340 R09: 0000200000000340
R10: 0000200000000300 R11: 0000000000000206 R12: 0000000000000000
R13: 00007f5716c16038 R14: 00007f5716c15fa0 R15: 00007ffef5560598
 </TASK>
rcu: rcu_preempt kthread starved for 10400 jiffies! g330353 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x0 ->cpu=1
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:27192 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: 1 UID: 0 PID: 5677 Comm: kworker/1:4 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
Workqueue: events jump_label_update_timeout
RIP: 0010:__sanitizer_cov_trace_pc+0x30/0x70
Code: 04 24 65 48 8b 0d b8 5b 73 11 65 8b 15 d9 5b 73 11 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 35 83 b9 cc 16 00 00 00 74 2c <8b> 91 a8 16 00 00 83 fa 02 75 21 48 8b 91 b0 16 00 00 48 8b 32 48
RSP: 0018:ffffc900049f77d8 EFLAGS: 00000246
RAX: ffffffff81b9abb6 RBX: ffff88823c63c2c8 RCX: ffff8881bf6dbb00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900049f7920 R08: ffffffff9030b1f7 R09: 1ffffffff206163e
R10: dffffc0000000000 R11: fffffbfff206163f R12: 1ffff110242085b9
R13: dffffc0000000000 R14: ffff888121042dc8 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8882a9290000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbd4d5ea4c0 CR3: 000000000e74a000 CR4: 00000000000006f0
Call Trace:
 <TASK>
 smp_call_function_many_cond+0xfe6/0x13d0
 on_each_cpu_cond_mask+0x3f/0x80
 smp_text_poke_batch_finish+0x5f5/0x1160
 arch_jump_label_transform_apply+0x1c/0x30
 __static_key_slow_dec_cpuslocked+0xbb/0x110
 jump_label_update_timeout+0x1e/0x30
 process_scheduled_works+0xb5d/0x1860
 worker_thread+0xa53/0xfc0
 kthread+0x388/0x470
 ret_from_fork+0x514/0xb70
 ret_from_fork_asm+0x1a/0x30
 </TASK>
