rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P21035/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=101761, q=1089 ncpus=1)
task:syz.1.2990      state:R  running task     stack:24968 pid:21035 tgid:21032 ppid:18015  task_flags:0x400940 flags:0x00080003
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5325 [inline]
 __schedule+0x1190/0x5de0 kernel/sched/core.c:6929
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7256
 irqentry_exit+0x36/0x90 kernel/entry/common.c:211
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:folio_test_swapbacked include/linux/page-flags.h:578 [inline]
RIP: 0010:folio_test_swapcache include/linux/page-flags.h:633 [inline]
RIP: 0010:folio_mapping+0x54/0x190 mm/util.c:700
Code: 08 3c 03 0f 8e 31 01 00 00 0f b6 6b 33 bf f5 00 00 00 89 ee e8 dd 9b bc ff 81 fd f5 00 00 00 0f 84 04 01 00 00 e8 8c a0 bc ff <48> 89 df e8 f4 fb ff ff be 08 00 00 00 48 89 c5 48 89 c7 e8 44 3f
RSP: 0018:ffffc9000b1b6d80 EFLAGS: 00000246
RAX: 0000000000080000 RBX: ffffea00025c40c0 RCX: ffffc90010107000
RDX: 0000000000080000 RSI: ffffffff81ffcab4 RDI: 0000000000000005
RBP: 00000000000000ff R08: 0000000000000005 R09: 00000000000000f5
R10: 00000000000000ff R11: 0000000000000001 R12: ffffc9000b1b7308
R13: 0000000000000000 R14: dffffc0000000000 R15: ffffc9000b1b7300
 folio_evictable+0x5a/0x270 mm/internal.h:499
 shrink_folio_list+0x520/0x4800 mm/vmscan.c:1155
 reclaim_folio_list+0xda/0x5d0 mm/vmscan.c:2233
 reclaim_pages+0x3ec/0x570 mm/vmscan.c:2270
 madvise_cold_or_pageout_pte_range+0x14d1/0x20d0 mm/madvise.c:446
 walk_pmd_range mm/pagewalk.c:130 [inline]
 walk_pud_range mm/pagewalk.c:224 [inline]
 walk_p4d_range mm/pagewalk.c:262 [inline]
 walk_pgd_range+0xc05/0x1f50 mm/pagewalk.c:303
 __walk_page_range+0x163/0x820 mm/pagewalk.c:410
 walk_page_range_vma+0x2c7/0xa20 mm/pagewalk.c:717
 madvise_pageout_page_range mm/madvise.c:624 [inline]
 madvise_pageout+0x257/0x540 mm/madvise.c:649
 madvise_vma_behavior+0xb14/0x2d50 mm/madvise.c:1352
 madvise_walk_vmas+0x31f/0x9c0 mm/madvise.c:1669
 madvise_do_behavior+0x1e2/0x530 mm/madvise.c:1885
 do_madvise+0x176/0x240 mm/madvise.c:1978
 __do_sys_madvise mm/madvise.c:1987 [inline]
 __se_sys_madvise mm/madvise.c:1985 [inline]
 __x64_sys_madvise+0xa9/0x110 mm/madvise.c:1985
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f23ec98efc9
RSP: 002b:00007f23ed8bb038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007f23ecbe5fa0 RCX: 00007f23ec98efc9
RDX: 0000000000000015 RSI: ffffffffffff0001 RDI: 0000000000000000
RBP: 00007f23eca11f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f23ecbe6038 R14: 00007f23ecbe5fa0 R15: 00007ffedd148568
 </TASK>