rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P5789/2:b..l
rcu: 	(detected by 1, t=10502 jiffies, g=35197, q=146 ncpus=2)
task:syz-executor    state:R  running task     stack:21512 pid:5789  ppid:5780   flags:0x00004002
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5393 [inline]
 __schedule+0x156f/0x4720 kernel/sched/core.c:6722
 preempt_schedule_irq+0xbf/0x150 kernel/sched/core.c:7032
 irqentry_exit+0x67/0x70 kernel/entry/common.c:441
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:lock_acquire+0x208/0x420 kernel/locking/lockdep.c:5794
Code: f7 84 24 80 00 00 00 00 02 00 00 43 c6 44 3c 04 f8 0f 85 f0 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 3c 00 00 00 00 43 c7 44 3c 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc90004777280 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 6e7461c1debf5a00
RDX: 0000000000000000 RSI: ffffffff8aeae2c0 RDI: ffffffff8b3c5260
RBP: ffffc90004777390 R08: dffffc0000000000 R09: 1ffffffff24446a0
R10: dffffc0000000000 R11: fffffbfff24446a1 R12: 1ffff920008eee5c
R13: ffffffff8e1322e0 R14: 0000000000000246 R15: dffffc0000000000
 rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
 rcu_read_lock include/linux/rcupdate.h:786 [inline]
 is_bpf_text_address+0x47/0x2a0 kernel/bpf/core.c:743
 kernel_text_address+0xa0/0xd0 kernel/extable.c:125
 __kernel_text_address+0xd/0x30 kernel/extable.c:79
 unwind_get_return_address+0x5d/0xc0 arch/x86/kernel/unwind_orc.c:369
 arch_stack_walk+0x11d/0x190 arch/x86/kernel/stacktrace.c:26
 stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
 save_stack+0x125/0x230 mm/page_owner.c:128
 __reset_page_owner+0x4e/0x190 mm/page_owner.c:149
 reset_page_owner include/linux/page_owner.h:24 [inline]
 free_pages_prepare mm/page_alloc.c:1182 [inline]
 free_unref_page_prepare+0x7d7/0x8f0 mm/page_alloc.c:2366
 free_unref_page_list+0xbe/0x860 mm/page_alloc.c:2505
 release_pages+0x208a/0x2300 mm/swap.c:1022
 __folio_batch_release+0x71/0xe0 mm/swap.c:1042
 folio_batch_release include/linux/pagevec.h:83 [inline]
 shmem_undo_range+0x5ff/0x1a80 mm/shmem.c:1026
 shmem_truncate_range mm/shmem.c:1135 [inline]
 shmem_evict_inode+0x285/0xa70 mm/shmem.c:1264
 evict+0x4b3/0x9d0 fs/inode.c:702
 do_unlinkat+0x38c/0x590 fs/namei.c:4465
 __do_sys_unlink fs/namei.c:4506 [inline]
 __se_sys_unlink fs/namei.c:4504 [inline]
 __x64_sys_unlink+0x49/0x50 fs/namei.c:4504
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fc1df7a8007
RSP: 002b:00007ffd98203108 EFLAGS: 00000206 ORIG_RAX: 0000000000000057
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc1df7a8007
RDX: 00007ffd98203130 RSI: 00007ffd982031c0 RDI: 00007ffd982031c0
RBP: 00007ffd982031c0 R08: 00007ffd982041c0 R09: 00000000ffffffff
R10: 0000000000000100 R11: 0000000000000206 R12: 00007ffd98204250
R13: 00007fc1df837363 R14: 0000000000078846 R15: 00007ffd98204290
 </TASK>
rcu: rcu_preempt kthread starved for 10424 jiffies! g35197 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 ->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:I stack:27464 pid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5393 [inline]
 __schedule+0x156f/0x4720 kernel/sched/core.c:6722
 preempt_schedule_irq+0xbf/0x150 kernel/sched/core.c:7032
 irqentry_exit+0x67/0x70 kernel/entry/common.c:441
 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:692
RIP: 0010:lock_acquire+0x208/0x420 kernel/locking/lockdep.c:5794
Code: f7 84 24 80 00 00 00 00 02 00 00 43 c6 44 3c 04 f8 0f 85 f0 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 3c 00 00 00 00 43 c7 44 3c 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc900001677c0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 87ad46659d242200
RDX: 0000000000000000 RSI: ffffffff8aeae2c0 RDI: ffffffff8b3c5260
RBP: ffffc900001678c8 R08: dffffc0000000000 R09: 1ffffffff24446a0
R10: dffffc0000000000 R11: fffffbfff24446a1 R12: 1ffff9200002cf04
R13: ffffffff8e7e3520 R14: 0000000000000246 R15: dffffc0000000000
 debug_objects_fill_pool+0xab/0x790 lib/debugobjects.c:653
 debug_object_assert_init+0x66/0x300 lib/debugobjects.c:940
 debug_timer_assert_init kernel/time/timer.c:792 [inline]
 debug_assert_init kernel/time/timer.c:837 [inline]
 __mod_timer+0x55/0xd60 kernel/time/timer.c:1020
 schedule_timeout+0x183/0x2d0 kernel/time/timer.c:2167
 rcu_gp_fqs_loop+0x30d/0x15e0 kernel/rcu/tree.c:1667
 rcu_gp_kthread+0x9e/0x400 kernel/rcu/tree.c:1866
 kthread+0x2fa/0x390 kernel/kthread.c:388
 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
 ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
 </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: 0 Comm: swapper/0 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/06/2026
RIP: 0010:pv_native_safe_halt+0xf/0x10 arch/x86/kernel/paravirt.c:148
Code: f1 33 02 c3 cc cc cc cc cc cc cc f3 0f 1e fa 0f 0b 66 2e 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 66 90 0f 00 2d e3 61 50 00 fb f4 <c3> 66 0f 1f 00 55 41 57 41 56 41 54 53 50 8b 2f eb 2c 89 cb 80 f9
RSP: 0018:ffffffff8de07d80 EFLAGS: 000002c2
RAX: 98a05f0e1c2d0000 RBX: ffffffff81635d01 RCX: 98a05f0e1c2d0000
RDX: 0000000000000001 RSI: ffffffff8aead140 RDI: ffffffff8b3c5260
RBP: ffffffff8de07eb8 R08: ffff8880b8c36b6b R09: 1ffff11017186d6d
R10: dffffc0000000000 R11: ffffed1017186d6e R12: 1ffffffff1bc0fbc
R13: dffffc0000000000 R14: 1ffffffff1bd2690 R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 000000003ec7a000 CR4: 00000000003506f0
Call Trace:
 <TASK>
 arch_safe_halt arch/x86/include/asm/paravirt.h:108 [inline]
 default_idle+0x13/0x20 arch/x86/kernel/process.c:753
 default_idle_call+0x6c/0xa0 kernel/sched/idle.c:97
 cpuidle_idle_call kernel/sched/idle.c:178 [inline]
 do_idle+0x221/0x5c0 kernel/sched/idle.c:302
 cpu_startup_entry+0x43/0x60 kernel/sched/idle.c:401
 rest_init+0x2e2/0x300 init/main.c:710
 arch_call_rest_init+0xe/0x10 init/main.c:806
 start_kernel+0x461/0x4e0 init/main.c:1051
 x86_64_start_reservations+0x2a/0x30 arch/x86/kernel/head64.c:555
 x86_64_start_kernel+0x60/0x60 arch/x86/kernel/head64.c:536
 secondary_startup_64_no_verify+0x179/0x17b
 </TASK>