rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P29711/3:b..l P29718/1:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=115233, q=110 ncpus=2)
task:syz.1.6147      state:R  running task     stack:28216 pid:29718 tgid:29718 ppid:5828   task_flags:0x40004c flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5397 [inline]
 __schedule+0x116a/0x5de0 kernel/sched/core.c:6786
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7109
 irqentry_exit+0x36/0x90 kernel/entry/common.c:307
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x62/0x350 kernel/locking/lockdep.c:5875
Code: 55 37 12 83 f8 07 0f 87 bc 02 00 00 89 c0 48 0f a3 05 f2 b3 10 0f 0f 82 74 02 00 00 8b 35 da e5 10 0f 85 f6 0f 85 8d 00 00 00 <48> 8b 44 24 30 65 48 2b 05 89 55 37 12 0f 85 c7 02 00 00 48 83 c4
RSP: 0018:ffffc90005b4f3d0 EFLAGS: 00000206
RAX: 0000000000000046 RBX: ffffffff8e5c4e00 RCX: 00000000d3addaf6
RDX: 0000000000000000 RSI: ffffffff8de0ab05 RDI: ffffffff8c157260
RBP: 0000000000000002 R08: 328b0d0cf36cb5da 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:841 [inline]
 class_rcu_constructor include/linux/rcupdate.h:1155 [inline]
 unwind_next_frame+0xd1/0x20a0 arch/x86/kernel/unwind_orc.c:479
 arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
 save_stack+0x160/0x1f0 mm/page_owner.c:156
 __reset_page_owner+0x84/0x1a0 mm/page_owner.c:308
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1248 [inline]
 free_unref_folios+0xa65/0x1800 mm/page_alloc.c:2763
 folios_put_refs+0x56f/0x740 mm/swap.c:992
 free_pages_and_swap_cache+0x245/0x4a0 mm/swap_state.c:264
 __tlb_batch_free_encoded_pages+0xf9/0x290 mm/mmu_gather.c:136
 tlb_batch_pages_flush mm/mmu_gather.c:149 [inline]
 tlb_flush_mmu_free mm/mmu_gather.c:397 [inline]
 tlb_flush_mmu mm/mmu_gather.c:404 [inline]
 tlb_finish_mmu+0x168/0x7c0 mm/mmu_gather.c:497
 exit_mmap+0x403/0xb90 mm/mmap.c:1297
 __mmput+0x12a/0x410 kernel/fork.c:1121
 mmput+0x62/0x70 kernel/fork.c:1144
 exit_mm kernel/exit.c:581 [inline]
 do_exit+0x7c4/0x2bd0 kernel/exit.c:952
 do_group_exit+0xd3/0x2a0 kernel/exit.c:1105
 __do_sys_exit_group kernel/exit.c:1116 [inline]
 __se_sys_exit_group kernel/exit.c:1114 [inline]
 __x64_sys_exit_group+0x3e/0x50 kernel/exit.c:1114
 x64_sys_call+0x1530/0x1730 arch/x86/include/generated/asm/syscalls_64.h:232
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0x4c0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb078f8e9a9
RSP: 002b:00007ffe2bfa5508 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fb078f8e9a9
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffe2bfa556c R08: 0000001e2bfa55ff R09: 00000000000927c0
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000572
R13: 00000000000927c0 R14: 00000000001f2a33 R15: 00007ffe2bfa55c0
 </TASK>
task:syz.6.6144      state:R  running task     stack:28216 pid:29711 tgid:29711 ppid:9575   task_flags:0x400040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5397 [inline]
 __schedule+0x116a/0x5de0 kernel/sched/core.c:6786
 preempt_schedule_common+0x44/0xc0 kernel/sched/core.c:6966
 preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
 __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_unlock+0x3e/0x50 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:391 [inline]
 filemap_map_pages+0xe2e/0x1680 mm/filemap.c:3757
 do_fault_around mm/memory.c:5548 [inline]
 do_read_fault mm/memory.c:5581 [inline]
 do_fault mm/memory.c:5724 [inline]
 do_pte_missing mm/memory.c:4251 [inline]
 handle_pte_fault mm/memory.c:6069 [inline]
 __handle_mm_fault+0x3b38/0x5490 mm/memory.c:6212
 handle_mm_fault+0x589/0xd10 mm/memory.c:6381
 do_user_addr_fault+0x60c/0x1370 arch/x86/mm/fault.c:1336
 handle_page_fault arch/x86/mm/fault.c:1476 [inline]
 exc_page_fault+0x5c/0xb0 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7fa83346ecfd
RSP: 002b:00007ffdc32ffdd0 EFLAGS: 00010246
RAX: 000000110c29c000 RBX: 00007fa8342e5720 RCX: 0000000000000000
RDX: 0000000000001a83 RSI: 000000000000316a RDI: 0000000000000001
RBP: ffffffff850c5a83 R08: 00007fa8337b6038 R09: 00007fa8337a2000
R10: 00007fa832bff008 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff850c5da5 R15: 0000000000000017
 </TASK>