rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P10372/1:b..l P10770/1:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=54541, q=735 ncpus=2)
task:syz-executor.0  state:R  running task     stack:22928 pid:10770 tgid:10767 ppid:9632   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a50 kernel/sched/core.c:6745
 preempt_schedule_irq+0xfb/0x1c0 kernel/sched/core.c:7067
 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:trace_lock_acquire include/trace/events/lock.h:24 [inline]
RIP: 0010:lock_acquire+0xdc/0x550 kernel/locking/lockdep.c:5725
Code: 08 0f 83 f4 02 00 00 89 c3 48 89 d8 48 c1 e8 06 48 8d 3c c5 e8 35 ad 8f be 08 00 00 00 e8 4c 6d 89 00 48 0f a3 1d 9c 9a 3a 0e <73> 16 e8 ed f0 09 00 84 c0 75 0d 80 3d a8 11 25 0e 00 0f 84 f9 02
RSP: 0018:ffffc900039773c0 EFLAGS: 00000257
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff81729b44
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8fad35e8
RBP: ffffc90003977518 R08: ffffffff8fad35ef R09: 1ffffffff1f5a6bd
R10: dffffc0000000000 R11: fffffbfff1f5a6be R12: 1ffff9200072ee80
R13: dffffc0000000000 R14: 0000000000000000 R15: dffffc0000000000
 rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
 rcu_read_lock include/linux/rcupdate.h:781 [inline]
 page_ext_get+0x3d/0x2a0 mm/page_ext.c:521
 __set_page_owner+0x9e/0x800 mm/page_owner.c:322
 set_page_owner include/linux/page_owner.h:32 [inline]
 post_alloc_hook+0x1f3/0x230 mm/page_alloc.c:1468
 prep_new_page mm/page_alloc.c:1476 [inline]
 get_page_from_freelist+0x2ce2/0x2d90 mm/page_alloc.c:3438
 __alloc_pages_noprof+0x256/0x6c0 mm/page_alloc.c:4696
 alloc_pages_mpol_noprof+0x3e8/0x680 mm/mempolicy.c:2265
 pipe_write+0x657/0x1a40 fs/pipe.c:513
 new_sync_write fs/read_write.c:497 [inline]
 vfs_write+0xa72/0xc90 fs/read_write.c:590
 ksys_write+0x1a0/0x2c0 fs/read_write.c:643
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7edc87dd69
RSP: 002b:00007f7edc3bd0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f7edc9ac120 RCX: 00007f7edc87dd69
RDX: 00000000fffffdef RSI: 00000000200001c0 RDI: 0000000000000000
RBP: 00007f7edc8ca49e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f7edc9ac120 R15: 00007ffc33865498
 </TASK>
task:syz-executor.3  state:R  running task     stack:20048 pid:10372 tgid:10372 ppid:10359  flags:0x00004006
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a50 kernel/sched/core.c:6745
 preempt_schedule_common+0x84/0xd0 kernel/sched/core.c:6924
 preempt_schedule+0xe1/0xf0 kernel/sched/core.c:6948
 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk.S:12
 unwind_next_frame+0x2124/0x2a00 arch/x86/kernel/unwind_orc.c:672
 arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
 save_stack+0xfb/0x1f0 mm/page_owner.c:156
 __reset_page_owner+0x75/0x3f0 mm/page_owner.c:297
 reset_page_owner include/linux/page_owner.h:25 [inline]
 free_pages_prepare mm/page_alloc.c:1088 [inline]
 free_unref_folios+0xf23/0x19e0 mm/page_alloc.c:2650
 folios_put_refs+0x93a/0xa60 mm/swap.c:1024
 folio_batch_release include/linux/pagevec.h:101 [inline]
 shmem_undo_range+0x6de/0x1df0 mm/shmem.c:1005
 shmem_truncate_range mm/shmem.c:1114 [inline]
 shmem_evict_inode+0x29b/0xa60 mm/shmem.c:1242
 evict+0x2a8/0x630 fs/inode.c:667
 __dentry_kill+0x20d/0x630 fs/dcache.c:603
 dput+0x19f/0x2b0 fs/dcache.c:845
 __fput+0x68c/0x8b0 fs/file_table.c:430
 task_work_run+0x24f/0x310 kernel/task_work.c:180
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218
 do_syscall_64+0x102/0x240 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7efc0bc7dacb
RSP: 002b:00007ffc21bdc7a0 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: 0000000000000000 RBX: 0000000000000003 RCX: 00007efc0bc7dacb
RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000003
RBP: 00007ffc21bdc85c R08: 0000000000000000 R09: 00007ffc21bdc547
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000032
R13: 000000000005bee4 R14: 000000000005b82f R15: 000000000000000a
 </TASK>
rcu: rcu_preempt kthread starved for 10587 jiffies! g54541 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:26032 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5408 [inline]
 __schedule+0x17e8/0x4a50 kernel/sched/core.c:6745
 __schedule_loop kernel/sched/core.c:6822 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6837
 schedule_timeout+0x1be/0x310 kernel/time/timer.c:2581
 rcu_gp_fqs_loop+0x2df/0x1370 kernel/rcu/tree.c:2000
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2202
 kthread+0x2f0/0x390 kernel/kthread.c:389
 ret_from_fork+0x4b/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
CPU: 0 PID: 10768 Comm: syz-executor.0 Not tainted 6.9.0-next-20240513-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
RIP: 0010:fpregs_assert_state_consistent+0x5c/0xe0 arch/x86/kernel/fpu/core.c:819
Code: 48 c1 e8 03 42 80 3c 30 00 74 08 4c 89 ff e8 0b a0 c5 00 49 8b 2f bb 00 40 00 00 be 00 40 00 00 48 21 ee 31 ff e8 34 eb 5f 00 <48> 21 eb 75 26 49 81 c7 40 19 00 00 e8 23 c6 54 0a 89 c5 65 48 8b
RSP: 0018:ffffc90002e87eb0 EFLAGS: 00000097
RAX: 0000000000000002 RBX: 0000000000004000 RCX: ffff888047608000
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff8136662c R09: 1ffff11008ec1000
R10: dffffc0000000000 R11: ffffed1008ec1001 R12: ffff888047608000
R13: 0000000000000000 R14: dffffc0000000000 R15: ffff888047608000
FS:  00007f7edc3ff6c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1ed0458f00 CR3: 0000000069834000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <TASK>
 arch_exit_to_user_mode_prepare arch/x86/include/asm/entry-common.h:56 [inline]
 exit_to_user_mode_prepare include/linux/entry-common.h:330 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x1a0/0x370 kernel/entry/common.c:218
 do_syscall_64+0x102/0x240 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f7edc87b4e7
Code: 0b e9 68 fe ff ff 48 83 c4 18 48 8d 3d 72 f3 c5 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 a3 68 fd ff 0f 1f 00 b8 27 00 00 00 0f 05 <c3> 0f 1f 84 00 00 00 00 00 b8 66 00 00 00 0f 05 c3 0f 1f 84 00 00
RSP: 002b:00007f7edc3feb88 EFLAGS: 00000206 ORIG_RAX: 0000000000000027
RAX: 00000000000000da RBX: 00007f7edc3fecf0 RCX: 00007f7edc87b4e7
RDX: 00007f7edc3febc0 RSI: 00007f7edc3fecf0 RDI: 0000000000000021
RBP: 0000000000000000 R08: 00007f7edc3ff6c0 R09: 00007f7edc3ff6c0
R10: 0000000000000000 R11: 0000000000000206 R12: 00007f7edc9abf8c
R13: 000000000000000b R14: 00007ffc338653b0 R15: 00007ffc33865498
 </TASK>