rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P1738/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=183041, q=218 ncpus=2)
task:syz-executor.4  state:R  running task     stack:20728 pid:1738  tgid:1738  ppid:19417  flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0x1960/0x4a80 kernel/sched/core.c:6688
 preempt_schedule_irq+0xfb/0x1b0 kernel/sched/core.c:7008
 irqentry_exit+0x57/0x80 kernel/entry/common.c:432
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:645
RIP: 0010:lock_acquire+0x25a/0x520 kernel/locking/lockdep.c:5757
Code: 2b 00 74 08 4c 89 f7 e8 44 8f 7d 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25
RSP: 0018:ffffc900030eeb40 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff9200061dd74 RCX: ffffffff816d6507
RDX: 0000000000000000 RSI: ffffffff8b6ac0c0 RDI: ffffffff8bbd60c0
RBP: ffffc900030eec88 R08: dffffc0000000000 R09: 1ffffffff21b966c
R10: dffffc0000000000 R11: fffffbfff21b966d R12: 1ffff9200061dd70
R13: dffffc0000000000 R14: ffffc900030eeba0 R15: 0000000000000246
 rcu_lock_acquire include/linux/rcupdate.h:301 [inline]
 rcu_read_lock include/linux/rcupdate.h:747 [inline]
 is_bpf_text_address+0x42/0x2a0 kernel/bpf/core.c:733
 kernel_text_address+0xa3/0xe0 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+0x11f/0x1a0 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0x117/0x1c0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:45 [inline]
 kasan_set_track+0x4f/0x70 mm/kasan/common.c:52
 kasan_save_free_info+0x28/0x40 mm/kasan/generic.c:522
 ____kasan_slab_free+0xd6/0x120 mm/kasan/common.c:236
 kasan_slab_free include/linux/kasan.h:164 [inline]
 slab_free_hook mm/slub.c:1800 [inline]
 slab_free_freelist_hook mm/slub.c:1826 [inline]
 slab_free mm/slub.c:3809 [inline]
 kmem_cache_free+0x297/0x500 mm/slub.c:3831
 free_buffer_head+0x55/0x240 fs/buffer.c:3034
 try_to_free_buffers+0x311/0x5f0 fs/buffer.c:2975
 block_invalidate_folio+0x67b/0x9d0 fs/buffer.c:1633
 folio_invalidate mm/truncate.c:158 [inline]
 truncate_cleanup_folio+0x1e0/0x5c0 mm/truncate.c:178
 truncate_inode_pages_range+0x2bc/0x11a0 mm/truncate.c:367
 ext4_evict_inode+0x21c/0xf20 fs/ext4/inode.c:193
 evict+0x2a4/0x620 fs/inode.c:664
 __dentry_kill+0x436/0x650 fs/dcache.c:607
 dentry_kill+0xbb/0x290
 dput+0x21e/0x470 fs/dcache.c:913
 __fput+0x60b/0xa10 fs/file_table.c:402
 task_work_run+0x24a/0x300 kernel/task_work.c:180
 exit_task_work include/linux/task_work.h:38 [inline]
 do_exit+0xa34/0x2750 kernel/exit.c:871
 do_group_exit+0x206/0x2c0 kernel/exit.c:1021
 get_signal+0x1769/0x1840 kernel/signal.c:2904
 arch_do_signal_or_restart+0x96/0x860 arch/x86/kernel/signal.c:309
 exit_to_user_mode_loop+0x6a/0x100 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:204
 irqentry_exit_to_user_mode+0x9/0x40 kernel/entry/common.c:309
 exc_page_fault+0x57c/0x860 arch/x86/mm/fault.c:1564
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570
RIP: 0033:0x63
RSP: 002b:00000000200002c8 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007f51cd39bf80 RCX: 00007f51cd27cae9
RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000000000000
RBP: 00007f51cd2c847a R08: 0000000000000000 R09: 0000000000000000
R10: 00000000200003c0 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f51cd39bf80 R15: 00007ffee16164e8
 </TASK>
rcu: rcu_preempt kthread starved for 10566 jiffies! g183041 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:25160 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5376 [inline]
 __schedule+0x1960/0x4a80 kernel/sched/core.c:6688
 __schedule_loop kernel/sched/core.c:6763 [inline]
 schedule+0x149/0x260 kernel/sched/core.c:6778
 schedule_timeout+0x1bd/0x300 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x2d6/0x1120 kernel/rcu/tree.c:1626
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:1825
 kthread+0x2d3/0x370 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 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:
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 1843 Comm: syz-executor.5 Not tainted 6.6.0-syzkaller-14651-gd2f51b3516da #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
RIP: 0010:kasan_check_range+0x9/0x290 mm/kasan/generic.c:186
Code: ff ff ff 48 ff c8 48 39 d8 0f 84 3b ff ff ff 48 89 df 48 c7 c6 d4 8f 11 8d e8 c3 fa e6 ff 0f 0b 90 66 0f 1f 00 55 41 57 41 56 <41> 54 53 b0 01 48 85 f6 0f 84 a0 01 00 00 4c 8d 04 37 49 39 f8 0f
RSP: 0018:ffffc9000387f0c0 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff816d4d14
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8f006ae8
RBP: ffffc9000387f228 R08: 0000000000000001 R09: 0000000000000000
R10: dffffc0000000000 R11: fffffbfff1e00d5e R12: 1ffff9200070fe24
R13: dffffc0000000000 R14: 0000000000000000 R15: 1ffff9200070fe48
FS:  00007fe96943c6c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fe9693d9d58 CR3: 000000004d54b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 instrument_atomic_read include/linux/instrumented.h:68 [inline]
 _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
 cpumask_test_cpu include/linux/cpumask.h:504 [inline]
 cpu_online include/linux/cpumask.h:1104 [inline]
 trace_lock_acquire include/trace/events/lock.h:24 [inline]
 lock_acquire+0xd4/0x520 kernel/locking/lockdep.c:5724
 seqcount_lockdep_reader_access+0x13f/0x220 include/linux/seqlock.h:103
 ktime_get_coarse_real_ts64+0x3a/0x120 kernel/time/timekeeping.c:2261
 current_time fs/inode.c:2532 [inline]
 inode_needs_update_time+0x92/0x4e0 fs/inode.c:2114
 file_modified_flags+0xde/0x2a0 fs/inode.c:2207
 ext4_write_checks+0x24b/0x2c0 fs/ext4/file.c:279
 ext4_buffered_write_iter+0xa2/0x350 fs/ext4/file.c:295
 ext4_file_write_iter+0x1dc/0x19b0
 do_iter_write+0x7ac/0xcb0 fs/read_write.c:860
 iter_file_splice_write+0x86d/0x1010 fs/splice.c:736
 do_splice_from fs/splice.c:933 [inline]
 direct_splice_actor+0xea/0x1c0 fs/splice.c:1142
 splice_direct_to_actor+0x376/0x9e0 fs/splice.c:1088
 do_splice_direct+0x2ac/0x3f0 fs/splice.c:1194
 do_sendfile+0x62c/0x1000 fs/read_write.c:1254
 __do_sys_sendfile64 fs/read_write.c:1322 [inline]
 __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1308
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x44/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7fe96867cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe96943c0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007fe96879c120 RCX: 00007fe96867cae9
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 0000000000000007
RBP: 00007fe9686c847a R08: 0000000000000000 R09: 0000000000000000
R10: 000080001d00c0d0 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007fe96879c120 R15: 00007ffe16eb3f78
 </TASK>