rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P10781/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=164649, q=257 ncpus=2)
task:syz.0.530       state:R  running task     stack:24672 pid:10781 tgid:10781 ppid:9554   flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6529
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:6851
 irqentry_exit+0x5e/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:raw_read_seqcount_latch_retry include/linux/seqlock.h:650 [inline]
RIP: 0010:latch_tree_find include/linux/rbtree_latch.h:209 [inline]
RIP: 0010:bpf_ksym_find kernel/bpf/core.c:735 [inline]
RIP: 0010:is_bpf_text_address+0x1d6/0x2a0 kernel/bpf/core.c:768
Code: a0 4d f1 ff e9 5d ff ff ff e8 96 4d f1 ff eb 05 e8 8f 4d f1 ff 45 31 f6 eb 05 e8 85 4d f1 ff 48 8b 4c 24 08 8b 05 4a b4 be 0c <39> c8 74 0a e8 71 4d f1 ff e9 ea fe ff ff e8 e7 61 17 0a 89 c3 31
RSP: 0018:ffffc900036df220 EFLAGS: 00000246
RAX: 0000000000000216 RBX: 0000000000000000 RCX: 0000000000000216
RDX: 0000000000000000 RSI: 00007fe1fa17def9 RDI: ffffffffa0003d80
RBP: 0000000000000000 R08: ffffffff81a23e9f R09: 1ffffffff283c908
R10: dffffc0000000000 R11: fffffbfff283c909 R12: ffffffffa0003d80
R13: dffffc0000000000 R14: 0000000000000000 R15: 00007fe1fa17def9
 kernel_text_address+0xa7/0xe0 kernel/extable.c:125
 __kernel_text_address+0xd/0x40 kernel/extable.c:79
 unwind_get_return_address+0x5d/0xc0 arch/x86/kernel/unwind_orc.c:369
 arch_stack_walk+0x125/0x1b0 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:47 [inline]
 kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:579
 poison_slab_object+0xe0/0x150 mm/kasan/common.c:240
 __kasan_slab_free+0x37/0x60 mm/kasan/common.c:256
 kasan_slab_free include/linux/kasan.h:184 [inline]
 slab_free_hook mm/slub.c:2256 [inline]
 slab_free mm/slub.c:4477 [inline]
 kmem_cache_free+0x145/0x350 mm/slub.c:4552
 pagetable_pte_dtor include/linux/mm.h:2982 [inline]
 ___pte_free_tlb+0x2d/0x130 arch/x86/mm/pgtable.c:55
 __pte_free_tlb arch/x86/include/asm/pgalloc.h:61 [inline]
 free_pte_range mm/memory.c:194 [inline]
 free_pmd_range mm/memory.c:212 [inline]
 free_pud_range mm/memory.c:246 [inline]
 free_p4d_range mm/memory.c:280 [inline]
 free_pgd_range+0x727/0xdd0 mm/memory.c:360
 free_pgtables+0x719/0x840
 exit_mmap+0x447/0xc80 mm/mmap.c:3423
 __mmput+0x115/0x390 kernel/fork.c:1345
 exit_mm+0x220/0x310 kernel/exit.c:571
 do_exit+0x9b2/0x27f0 kernel/exit.c:869
 do_group_exit+0x207/0x2c0 kernel/exit.c:1031
 __do_sys_exit_group kernel/exit.c:1042 [inline]
 __se_sys_exit_group kernel/exit.c:1040 [inline]
 __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1040
 x64_sys_call+0x2634/0x2640 arch/x86/include/generated/asm/syscalls_64.h:232
 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: 0033:0x7fe1fa17def9
RSP: 002b:00007ffd83cadff8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe1fa17def9
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffd83cae04c R08: 00007ffd83cae0df R09: 000000000014458b
R10: 0000000000000006 R11: 0000000000000246 R12: 0000000000000032
R13: 000000000014458b R14: 0000000000144525 R15: 00007ffd83cae0a0
 </TASK>
rcu: rcu_preempt kthread starved for 10560 jiffies! g164649 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:24464 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0x1800/0x4a60 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6621
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x2df/0x1330 kernel/rcu/tree.c:2034
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2236
 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:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:111