rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5096/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=70993, q=194 ncpus=2)
task:syz-executor.5  state:R  running task     stack:24224 pid:5096  tgid:5096  ppid:5084   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0xf15/0x5c80 kernel/sched/core.c:6727
 preempt_schedule_irq+0x51/0x90 kernel/sched/core.c:7047
 irqentry_exit+0x36/0x80 kernel/entry/common.c:432
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:bpf_ksym_find+0x2/0x1b0 kernel/bpf/core.c:726
Code: 41 5c 41 5d c3 48 89 df e8 8b da 49 00 eb b3 48 89 df e8 81 da 49 00 eb d8 e8 7a da 49 00 eb b6 0f 1f 84 00 00 00 00 00 41 57 <41> 56 41 55 49 bd 00 00 00 00 00 fc ff df 41 54 49 89 fc 55 53 48
RSP: 0018:ffffc90003c2f370 EFLAGS: 00000293
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff819651b6
RDX: ffff888026bb1dc0 RSI: ffffffff819651c0 RDI: 00007f9891a7c497
RBP: 00007f9891a7c497 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8ace32a0 R12: ffffc90003c2f430
R13: ffffffff817562b0 R14: ffffc90003c2f4a8 R15: ffff888026bb1dc0
 is_bpf_text_address+0x58/0x1a0 kernel/bpf/core.c:763
 kernel_text_address kernel/extable.c:125 [inline]
 kernel_text_address+0x85/0xf0 kernel/extable.c:94
 __kernel_text_address+0xd/0x30 kernel/extable.c:79
 unwind_get_return_address+0x78/0xe0 arch/x86/kernel/unwind_orc.c:369
 arch_stack_walk+0xbe/0x170 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
 kasan_save_stack+0x33/0x50 mm/kasan/common.c:47
 kasan_set_track+0x24/0x30 mm/kasan/common.c:61
 kasan_save_free_info+0x2b/0x40 mm/kasan/generic.c:582
 poison_slab_object+0x119/0x190 mm/kasan/common.c:233
 __kasan_slab_free+0x14/0x30 mm/kasan/common.c:241
 kasan_slab_free include/linux/kasan.h:183 [inline]
 slab_free_hook mm/slub.c:2121 [inline]
 slab_free mm/slub.c:4303 [inline]
 kmem_cache_free+0x12e/0x360 mm/slub.c:4367
 free_buffer_head+0x4e/0x110 fs/buffer.c:3006
 try_to_free_buffers+0x1c5/0x2d0 fs/buffer.c:2947
 jbd2_journal_try_to_free_buffers+0x1fa/0x270 fs/jbd2/transaction.c:2168
 ext4_release_folio+0x1a5/0x370 fs/ext4/inode.c:3197
 filemap_release_folio+0x1f1/0x270 mm/filemap.c:4088
 block_invalidate_folio+0x4e5/0x5e0 fs/buffer.c:1626
 folio_invalidate mm/truncate.c:158 [inline]
 truncate_cleanup_folio+0x2a8/0x3d0 mm/truncate.c:178
 truncate_inode_pages_range+0x27b/0xf00 mm/truncate.c:358
 ext4_evict_inode+0x2d8/0x1a60 fs/ext4/inode.c:193
 evict+0x2ed/0x6b0 fs/inode.c:665
 iput_final fs/inode.c:1739 [inline]
 iput.part.0+0x570/0x7c0 fs/inode.c:1765
 iput+0x5c/0x80 fs/inode.c:1755
 do_unlinkat+0x60f/0x740 fs/namei.c:4405
 __do_sys_unlink fs/namei.c:4446 [inline]
 __se_sys_unlink fs/namei.c:4444 [inline]
 __x64_sys_unlink+0xc7/0x110 fs/namei.c:4444
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x62/0x6a
RIP: 0033:0x7f9891a7c497
RSP: 002b:00007ffdf1d548f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9891a7c497
RDX: 00007ffdf1d54920 RSI: 00007ffdf1d549b0 RDI: 00007ffdf1d549b0
RBP: 00007ffdf1d549b0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffdf1d55a70
R13: 00007f9891ac83b9 R14: 00000000000cc1ff R15: 0000000000000007
 </TASK>
rcu: rcu_preempt kthread starved for 10563 jiffies! g70993 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:28256 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5400 [inline]
 __schedule+0xf15/0x5c80 kernel/sched/core.c:6727
 __schedule_loop kernel/sched/core.c:6802 [inline]
 schedule+0xe7/0x270 kernel/sched/core.c:6817
 schedule_timeout+0x136/0x290 kernel/time/timer.c:2183
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:1631
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:1830
 kthread+0x2c1/0x3a0 kernel/kthread.c:388
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 0 Comm: swapper/0 Not tainted 6.7.0-rc6-next-20231222-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:native_irq_disable arch/x86/include/asm/irqflags.h:37 [inline]
RIP: 0010:arch_local_irq_disable arch/x86/include/asm/irqflags.h:72 [inline]
RIP: 0010:acpi_safe_halt+0x1a/0x20 drivers/acpi/processor_idle.c:113
Code: 08 ed c3 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 65 48 8b 05 d8 1a 77 75 48 8b 00 a8 08 75 0c 66 90 0f 00 2d 08 45 ae 00 fb f4 <fa> c3 0f 1f 40 00 0f b6 47 08 3c 01 74 0b 3c 02 74 05 8b 7f 04 eb
RSP: 0018:ffffffff8ce07d68 EFLAGS: 00000246
RAX: 0000000000004000 RBX: 0000000000000001 RCX: ffffffff8a8c8da5
RDX: 0000000000000001 RSI: ffff888144ab8000 RDI: ffff888144ab8064
RBP: ffff888144ab8064 R08: 0000000000000000 R09: ffffed1017306ded
R10: ffff8880b9836f6b R11: 0000000000000001 R12: ffff888147ee3000
R13: ffffffff8dd29dc0 R14: 0000000000000000 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c0106ff000 CR3: 000000007bd35000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 acpi_idle_enter+0xc5/0x160 drivers/acpi/processor_idle.c:707
 cpuidle_enter_state+0x83/0x500 drivers/cpuidle/cpuidle.c:267
 cpuidle_enter+0x4e/0xa0 drivers/cpuidle/cpuidle.c:388
 cpuidle_idle_call kernel/sched/idle.c:215 [inline]
 do_idle+0x314/0x3f0 kernel/sched/idle.c:312
 cpu_startup_entry+0x4f/0x60 kernel/sched/idle.c:410
 rest_init+0x16f/0x2b0 init/main.c:731
 arch_call_rest_init+0x13/0x30 init/main.c:828
 start_kernel+0x39e/0x480 init/main.c:1073
 x86_64_start_reservations+0x18/0x30 arch/x86/kernel/head64.c:555
 x86_64_start_kernel+0xb2/0xc0 arch/x86/kernel/head64.c:536
 secondary_startup_64_no_verify+0x170/0x17b
 </TASK>