rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P17323/1:b..l
	(detected by 0, t=10502 jiffies, g=96233, q=68 ncpus=2)
task:syz.5.3228      state:R  running task     stack:23120 pid:17323 ppid:6957   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0x11d1/0x40e0 kernel/sched/core.c:6562
 preempt_schedule_irq+0xbb/0x160 kernel/sched/core.c:6874
 irqentry_exit+0x63/0x70 kernel/entry/common.c:439
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:123
Code: 24 28 ff c2 89 54 24 2c 48 c7 44 24 30 00 00 00 00 65 48 8b 15 6b 3b 91 7e 48 c7 c7 30 34 71 81 48 89 c6 31 c9 e8 6a 55 bf ff <8b> 44 24 30 66 42 c7 44 33 04 f8 f8 42 c6 44 33 06 f8 48 c7 04 24
RSP: 0018:ffffc90003226ea0 EFLAGS: 00000292
RAX: 260b13ad30ba3300 RBX: 1ffff92000644dd4 RCX: 0000000080000000
RDX: dffffc0000000000 RSI: ffffffff812d1ce4 RDI: ffffc90003226ec0
RBP: ffffc90003226f30 R08: ffffc90003226ed0 R09: 000000000000000f
R10: dffffc0000000000 R11: fffff52000644dcd R12: dffffc0000000000
R13: 1ffff11005c44bd6 R14: dffffc0000000000 R15: 1ffff92000644dec
 save_stack+0x121/0x230 mm/page_owner.c:127
 __reset_page_owner+0x51/0x1a0 mm/page_owner.c:148
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1486 [inline]
 free_pcp_prepare mm/page_alloc.c:1536 [inline]
 free_unref_page_prepare+0x8b4/0x9a0 mm/page_alloc.c:3413
 free_unref_page_list+0xbb/0x8e0 mm/page_alloc.c:3554
 release_pages+0x1fa6/0x2220 mm/swap.c:1035
 __pagevec_release+0x6d/0xe0 mm/swap.c:1055
 pagevec_release include/linux/pagevec.h:71 [inline]
 folio_batch_release include/linux/pagevec.h:135 [inline]
 shmem_undo_range+0x7c2/0x20c0 mm/shmem.c:946
 shmem_truncate_range mm/shmem.c:1062 [inline]
 shmem_evict_inode+0x25b/0xa80 mm/shmem.c:1171
 evict+0x4c9/0x8d0 fs/inode.c:705
 __dentry_kill+0x431/0x650 fs/dcache.c:611
 dentry_kill+0xb8/0x290 fs/dcache.c:-1
 dput+0xfa/0x1d0 fs/dcache.c:918
 __fput+0x5e0/0x920 fs/file_table.c:328
 task_work_run+0x1d0/0x260 kernel/task_work.c:203
 exit_task_work include/linux/task_work.h:39 [inline]
 do_exit+0x982/0x2480 kernel/exit.c:881
 do_group_exit+0x217/0x2d0 kernel/exit.c:1023
 get_signal+0x1272/0x1350 kernel/signal.c:2871
 arch_do_signal_or_restart+0xc4/0x1350 arch/x86/kernel/signal.c:871
 exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
 exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
 irqentry_exit_to_user_mode+0x5/0x30 kernel/entry/common.c:316
 exc_page_fault+0x88/0x100 arch/x86/mm/fault.c:1485
 asm_exc_page_fault+0x22/0x30 arch/x86/include/asm/idtentry.h:608
RIP: 0033:0x7eff18f9ce61
RSP: 002b:00000000fffffeb0 EFLAGS: 00010217
RAX: 0000000000000000 RBX: 00007eff19215fa0 RCX: 00007eff18f9ce59
RDX: 0000000000000000 RSI: 00000000fffffeb0 RDI: 0000000002000400
RBP: 00007eff19032d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000
R13: 00007eff19216038 R14: 00007eff19215fa0 R15: 00007ffd65e32808
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10497 jiffies! g96233 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=74579
rcu: rcu_preempt kthread starved for 10498 jiffies! g96233 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:27184 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5245 [inline]
 __schedule+0x11d1/0x40e0 kernel/sched/core.c:6562
 schedule+0xb9/0x180 kernel/sched/core.c:6638
 schedule_timeout+0x184/0x2d0 kernel/time/timer.c:2168
 rcu_gp_fqs_loop+0x303/0x1340 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0x99/0x3b0 kernel/rcu/tree.c:1905
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </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: 17551 Comm: syz.5.3286 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:trace_hrtimer_expire_exit include/trace/events/timer.h:286 [inline]
RIP: 0010:__run_hrtimer kernel/time/hrtimer.c:1750 [inline]
RIP: 0010:__hrtimer_run_queues+0x606/0xd50 kernel/time/hrtimer.c:1811
Code: c7 40 0f 92 c6 bf 02 00 00 00 e8 15 0f 10 00 45 84 ff 74 23 e8 1b 07 fa ff 84 c0 49 bd 00 00 00 00 00 fc ff df 4c 8b 7c 24 18 <0f> 84 57 01 00 00 e8 8f 0c 10 00 eb 14 e8 88 0c 10 00 49 bd 00 00
RSP: 0018:ffffc900001e0d40 EFLAGS: 00000002
RAX: 0000000000000001 RBX: ffff8880b8f2a708 RCX: 9517a1e1c9b11b00
RDX: ffff88802bd90000 RSI: ffffffff8adf1b40 RDI: ffffffff8adf1b00
RBP: ffffc900001e0e88 R08: ffffffff8e200c2f R09: 1ffffffff1c40185
R10: dffffc0000000000 R11: fffffbfff1c40186 R12: ffff888038134340
R13: dffffc0000000000 R14: 0000000000000001 R15: ffff8880b8f2a6c0
FS:  00007eff19e6f6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b2f014ff8 CR3: 00000000548d7000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 hrtimer_interrupt+0x3c5/0x9c0 kernel/time/hrtimer.c:1873
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1107 [inline]
 __sysvec_apic_timer_interrupt+0x153/0x5a0 arch/x86/kernel/apic/apic.c:1124
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1118 [inline]
 sysvec_apic_timer_interrupt+0x9b/0xc0 arch/x86/kernel/apic/apic.c:1118
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:691
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xbc/0x120 kernel/locking/spinlock.c:194
Code: c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f7 44 24 20 00 02 00 00 41 c6 04 07 f8 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> 3f 4e 20 f7 65 8b 05 40 c0 c9 75 85 c0 74 3c 48 c7 04 24 0e 36
RSP: 0018:ffffc90003d37a20 EFLAGS: 00000206
RAX: dffffc0000000004 RBX: 0000000000000a06 RCX: 9517a1e1c9b11b00
RDX: dffffc0000000000 RSI: ffffffff8a8c19a0 RDI: 0000000000000001
RBP: ffffc90003d37ab0 R08: ffffffff8cb470c3 R09: 1ffffffff1968e18
R10: dffffc0000000000 R11: fffffbfff1968e19 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffffffff8cb470c0 R15: 1ffff920007a6f44
 timekeeping_inject_offset+0x5c3/0x670 kernel/time/timekeeping.c:1392
 do_adjtimex+0x45a/0xa00 kernel/time/timekeeping.c:2444
 do_clock_adjtime kernel/time/posix-timers.c:1155 [inline]
 __do_sys_clock_adjtime kernel/time/posix-timers.c:1167 [inline]
 __se_sys_clock_adjtime kernel/time/posix-timers.c:1158 [inline]
 __x64_sys_clock_adjtime+0x242/0x320 kernel/time/posix-timers.c:1158
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7eff18f9ce59
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007eff19e6f028 EFLAGS: 00000246 ORIG_RAX: 0000000000000131
RAX: ffffffffffffffda RBX: 00007eff19215fa0 RCX: 00007eff18f9ce59
RDX: 0000000000000000 RSI: 0000200000000040 RDI: 0000000000000000
RBP: 00007eff19032d6f R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007eff19216038 R14: 00007eff19215fa0 R15: 00007ffd65e32808
 </TASK>