rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5314/2:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=12005, q=860 ncpus=2)
task:syz.3.6         state:R  running task     stack:23920 pid:5314  tgid:5314  ppid:5221   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0xe37/0x5490 kernel/sched/core.c:6529
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:6851
 irqentry_exit+0x36/0x90 kernel/entry/common.c:354
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x1f2/0x560 kernel/locking/lockdep.c:5727
Code: c1 05 8a 10 9a 7e 83 f8 01 0f 85 ea 02 00 00 9c 58 f6 c4 02 0f 85 d5 02 00 00 48 85 ed 74 01 fb 48 b8 00 00 00 00 00 fc ff df <48> 01 c3 48 c7 03 00 00 00 00 48 c7 43 08 00 00 00 00 48 8b 84 24
RSP: 0018:ffffc900040c6c50 EFLAGS: 00000206
RAX: dffffc0000000000 RBX: 1ffff92000818d8c RCX: 0000000000000001
RDX: 0000000000000001 RSI: ffffffff8b4cc7c0 RDI: ffffffff8bb09880
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff28c5ae0
R10: ffffffff9462d707 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: ffffffff8ddb5be0 R15: 0000000000000000
 rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
 rcu_read_lock include/linux/rcupdate.h:838 [inline]
 percpu_ref_tryget_many include/linux/percpu-refcount.h:241 [inline]
 percpu_ref_tryget include/linux/percpu-refcount.h:266 [inline]
 css_tryget include/linux/cgroup_refcnt.h:45 [inline]
 css_tryget include/linux/cgroup_refcnt.h:42 [inline]
 get_mem_cgroup_from_mm+0x27e/0x5f0 mm/memcontrol.c:946
 __mem_cgroup_charge+0x1a/0x270 mm/memcontrol.c:4453
 mem_cgroup_charge include/linux/memcontrol.h:672 [inline]
 filemap_add_folio+0x89/0x220 mm/filemap.c:965
 page_cache_ra_unbounded+0x1ed/0x5a0 mm/readahead.c:252
 do_page_cache_ra mm/readahead.c:303 [inline]
 page_cache_ra_order+0x6b5/0xb80 mm/readahead.c:488
 page_cache_async_ra+0x5cb/0x820 mm/readahead.c:638
 do_async_mmap_readahead mm/filemap.c:3203 [inline]
 filemap_fault+0xbbf/0x2660 mm/filemap.c:3300
 __do_fault+0x10a/0x490 mm/memory.c:4655
 do_read_fault mm/memory.c:5061 [inline]
 do_fault mm/memory.c:5191 [inline]
 do_pte_missing mm/memory.c:3947 [inline]
 handle_pte_fault mm/memory.c:5521 [inline]
 __handle_mm_fault+0x3b53/0x55b0 mm/memory.c:5664
 handle_mm_fault+0x44e/0x7b0 mm/memory.c:5832
 faultin_page mm/gup.c:1194 [inline]
 __get_user_pages+0x475/0x15c0 mm/gup.c:1493
 __get_user_pages_locked mm/gup.c:1760 [inline]
 get_dump_page+0xfb/0x220 mm/gup.c:2278
 dump_user_range+0x135/0x8a0 fs/coredump.c:952
 elf_core_dump+0x27c1/0x39a0 fs/binfmt_elf.c:2116
 do_coredump+0x29c5/0x3de0 fs/coredump.c:767
 get_signal+0x23d4/0x2770 kernel/signal.c:2902
 arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:310
 exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 irqentry_exit_to_user_mode+0x13f/0x280 kernel/entry/common.c:231
 asm_exc_general_protection+0x26/0x30 arch/x86/include/asm/idtentry.h:617
RIP: 0033:0x7f7d21d79e81
RSP: 002b:0000000020000100 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f7d21f15f80 RCX: 00007f7d21d79e79
RDX: 0000000020000000 RSI: 0000000020000100 RDI: 0000000000000000
RBP: 00007f7d21de793e R08: 0000000020000300 R09: 0000000020000300
R10: 0000000020000180 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f7d21f15f80 R15: 00007ffed81eeb58
 </TASK>
rcu: rcu_preempt kthread starved for 10221 jiffies! g12005 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:28640 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5188 [inline]
 __schedule+0xe37/0x5490 kernel/sched/core.c:6529
 __schedule_loop kernel/sched/core.c:6606 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6621
 schedule_timeout+0x136/0x2a0 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2034
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2236
 kthread+0x2c1/0x3a0 kernel/kthread.c:389
 ret_from_fork+0x45/0x80 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 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt+0x1a/0x20 drivers/acpi/processor_idle.c:111
hrtimer: interrupt took 745584758 ns