rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 GPs behind) idle=5034/1/0x4000000000000000 softirq=70498/70501 fqs=18
rcu: 	(detected by 0, t=10505 jiffies, g=64189, q=1503 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 13432 Comm: syz.5.1627 Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:lock_release+0x5a/0xa30 kernel/locking/lockdep.c:5857
Code: 24 e0 00 00 00 49 bf 00 00 00 00 00 fc ff df 48 c7 44 24 60 b3 8a b5 41 48 c7 44 24 68 35 fe 05 8e 48 c7 44 24 70 70 c0 7a 81 <4c> 8d 64 24 60 49 c1 ec 03 48 b8 f1 f1 f1 f1 04 f2 00 f2 4b 89 04
RSP: 0018:ffffc90000a18a40 EFLAGS: 00000082
RAX: 9dac267c01cfc300 RBX: ffffffff9a575d70 RCX: 0000000000000002
RDX: ffff888059d860b8 RSI: ffffffff84c87265 RDI: ffffffff9a575d88
RBP: ffffc90000a18b70 R08: 0000000000000003 R09: fffff52000143160
R10: dffffc0000000000 R11: fffff52000143160 R12: dffffc0000000000
R13: ffffffff84c87265 R14: ffffc90000a18ba0 R15: dffffc0000000000
FS:  00007f18b2ef36c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000004b13e000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:149 [inline]
 _raw_spin_unlock_irqrestore+0x79/0x140 kernel/locking/spinlock.c:194
 debug_object_deactivate+0x2d5/0x390 lib/debugobjects.c:888
 debug_hrtimer_deactivate kernel/time/hrtimer.c:433 [inline]
 debug_deactivate+0x1b/0x220 kernel/time/hrtimer.c:475
 __run_hrtimer kernel/time/hrtimer.c:1707 [inline]
 __hrtimer_run_queues+0x305/0xd30 kernel/time/hrtimer.c:1803
 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1865
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x112/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:__sanitizer_cov_trace_pc+0x0/0x70 kernel/kcov.c:210
Code: 89 fb e8 23 00 00 00 48 8b 3d 64 d4 8e 0c 48 89 de 5b e9 a3 ef 5a 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 48 8b 04 24 65 48 8b 0c 25 00 d6 03 00 65 8b 15 b0 77
RSP: 0018:ffffc90004d46ed8 EFLAGS: 00000246
RAX: 0000000000000002 RBX: 0000000000000000 RCX: ffffffff81dbcba4
RDX: ffff88801f35da00 RSI: 0000000000000000 RDI: 0000000000000000
RBP: ffffc90004d46fd0 R08: ffffffff81dbcbb3 R09: fffffbfff347faec
R10: dffffc0000000000 R11: fffffbfff347faec R12: dffffc0000000000
R13: ffffea0001239440 R14: 0000000000000008 R15: 0000000000000000
 __folio_batch_add_and_move+0x88f/0xd70 mm/swap.c:194
 shmem_alloc_and_add_folio+0xdd5/0x1080 mm/shmem.c:1892
 shmem_get_folio_gfp+0x621/0x1840 mm/shmem.c:2355
 shmem_fault+0x220/0x5b0 mm/shmem.c:2556
 __do_fault+0x137/0x390 mm/memory.c:4907
 do_read_fault mm/memory.c:5322 [inline]
 do_fault mm/memory.c:5456 [inline]
 do_pte_missing mm/memory.c:3979 [inline]
 handle_pte_fault+0x39eb/0x5ed0 mm/memory.c:5801
 __handle_mm_fault mm/memory.c:5944 [inline]
 handle_mm_fault+0x1106/0x1bb0 mm/memory.c:6112
 faultin_page mm/gup.c:1196 [inline]
 __get_user_pages+0x1c82/0x49e0 mm/gup.c:1494
 populate_vma_page_range+0x264/0x330 mm/gup.c:1932
 __mm_populate+0x27a/0x460 mm/gup.c:2035
 mm_populate include/linux/mm.h:3386 [inline]
 vm_mmap_pgoff+0x2c3/0x3d0 mm/util.c:585
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f18b217ff19
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f18b2ef3058 EFLAGS: 00000246 ORIG_RAX: 0000000000000009
RAX: ffffffffffffffda RBX: 00007f18b2346080 RCX: 00007f18b217ff19
RDX: b635773f06ebbeee RSI: 0000000000b36000 RDI: 0000000020000000
RBP: 00007f18b21f3cc8 R08: ffffffffffffffff R09: 0000000000000000
R10: 0000000000008031 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f18b2346080 R15: 00007fffa4ca7538
 </TASK>
rcu: rcu_preempt kthread starved for 10415 jiffies! g64189 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:25720 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x1850/0x4c30 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6848
 schedule_timeout+0x15a/0x290 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2045
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2247
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 13402 Comm: syz.7.1610 Not tainted 6.13.0-rc2-syzkaller-00018-g7cb1b4663150 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_single+0x45f/0x1990 kernel/smp.c:679
Code: 17 27 0c 00 41 83 e4 01 75 16 e8 cc 22 0c 00 4d 89 fc 44 8b 7c 24 24 eb 46 e8 bd 22 0c 00 eb 3f 4d 89 fc 44 8b 7c 24 24 f3 90 <42> 0f b6 04 2b 84 c0 75 10 41 f7 06 01 00 00 00 74 1e e8 9a 22 0c
RSP: 0018:ffffc900050176a0 EFLAGS: 00000246
RAX: ffffffff81933ba6 RBX: 1ffff92000a02ef1 RCX: 0000000000080000
RDX: ffffc9000f435000 RSI: 000000000007ffff RDI: 0000000000080000
RBP: ffffc90005017838 R08: ffffffff81933b69 R09: 1ffff92000a02ea0
R10: dffffc0000000000 R11: fffff52000a02ea1 R12: 1ffff92000a02eec
R13: dffffc0000000000 R14: ffffc90005017788 R15: 0000000000000000
FS:  00007ff615b446c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000557a7d682f28 CR3: 000000006d1e2000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 rcu_barrier+0x327/0x530 kernel/rcu/tree.c:4617
 flush_rcu_work+0x84/0xb0 kernel/workqueue.c:4289
 kvfree_rcu_barrier+0x226/0x2d0 kernel/rcu/tree.c:3941
 kmem_cache_destroy+0x2e/0x160 mm/slab_common.c:497
 f2fs_fill_super+0x5fb6/0x7820 fs/f2fs/super.c:4899
 mount_bdev+0x20c/0x2d0 fs/super.c:1693
 legacy_get_tree+0xf0/0x190 fs/fs_context.c:662
 vfs_get_tree+0x92/0x2b0 fs/super.c:1814
 do_new_mount+0x2be/0xb40 fs/namespace.c:3507
 do_mount fs/namespace.c:3847 [inline]
 __do_sys_mount fs/namespace.c:4057 [inline]
 __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4034
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7ff614d816ba
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ff615b43e88 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ff615b43f10 RCX: 00007ff614d816ba
RDX: 0000000020000000 RSI: 0000000020000040 RDI: 00007ff615b43ed0
RBP: 0000000020000000 R08: 00007ff615b43f10 R09: 0000000000000008
R10: 0000000000000008 R11: 0000000000000246 R12: 0000000020000040
R13: 00007ff615b43ed0 R14: 0000000000005505 R15: 0000000020000d00
 </TASK>