rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 ticks this GP) idle=08d4/1/0x4000000000000000 softirq=132595/132614 fqs=4
rcu: 	(detected by 1, t=10502 jiffies, g=117457, q=317 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 24718 Comm: syz.7.5449 Not tainted 6.13.0-syzkaller-06167-g0afd22092df4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:task_wait_context kernel/locking/lockdep.c:4784 [inline]
RIP: 0010:task_wait_context kernel/locking/lockdep.c:4774 [inline]
RIP: 0010:check_wait_context kernel/locking/lockdep.c:4873 [inline]
RIP: 0010:__lock_acquire+0x5c0/0x3c40 kernel/locking/lockdep.c:5178
Code: 8b 95 b0 0a 00 00 85 d2 0f 85 66 0d 00 00 49 8d bd c8 0a 00 00 48 ba 00 00 00 00 00 fc ff df 48 89 fe 48 c1 ee 03 0f b6 14 16 <84> d2 74 09 80 fa 03 0f 8e c7 35 00 00 45 8b b5 c8 0a 00 00 45 85
RSP: 0018:ffffc90000007b48 EFLAGS: 00000806
RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffff8880269d5360
RDX: 0000000000000000 RSI: 1ffff11004d3aa69 RDI: ffff8880269d5348
RBP: dffffc0000000000 R08: 0000000000000001 R09: fffffbfff2dd6f98
R10: ffffffff96eb7cc7 R11: 0000000000000001 R12: ffff8880269d5381
R13: ffff8880269d4880 R14: 0000000000000040 R15: ffff8880269d5388
FS:  00007f3b9c7a16c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007faa80d7ac78 CR3: 0000000068870000 CR4: 00000000003526f0
DR0: 0000000000000007 DR1: 000000000000000b DR2: 0000000000000000
DR3: 0000000000000010 DR6: 00000000ffff0ff0 DR7: 0000000000000400
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 lock_acquire.part.0+0x11b/0x380 kernel/locking/lockdep.c:5851
 rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
 rcu_read_lock include/linux/rcupdate.h:849 [inline]
 advance_sched+0x67f/0xc60 net/sched/sch_taprio.c:985
 __run_hrtimer kernel/time/hrtimer.c:1738 [inline]
 __hrtimer_run_queues+0x20a/0xae0 kernel/time/hrtimer.c:1802
 hrtimer_interrupt+0x392/0x8e0 kernel/time/hrtimer.c:1864
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x10f/0x400 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire.part.0+0x155/0x380 kernel/locking/lockdep.c:5816
Code: b8 ff ff ff ff 65 0f c1 05 70 ca 6b 7e 83 f8 01 0f 85 d0 01 00 00 9c 58 f6 c4 02 0f 85 e5 01 00 00 48 85 ed 0f 85 b6 01 00 00 <48> b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 00 00 00 00 48 c7
RSP: 0018:ffffc9000520f5c0 EFLAGS: 00000206
RAX: 0000000000000046 RBX: 1ffff92000a41eb9 RCX: 000000008526bc4e
RDX: 0000000000000001 RSI: ffffffff8b6cdb40 RDI: ffffffff8bd2e7c0
RBP: 0000000000000200 R08: 0000000000000000 R09: fffffbfff2dd6f98
R10: ffffffff96eb7cc7 R11: 0000000000000000 R12: 0000000000000001
R13: ffff8880b8644c18 R14: 0000000000000000 R15: 0000000000000000
 __raw_spin_trylock include/linux/spinlock_api_smp.h:90 [inline]
 _raw_spin_trylock+0x63/0x80 kernel/locking/spinlock.c:138
 spin_trylock include/linux/spinlock.h:361 [inline]
 free_unref_page+0x3c0/0x1080 mm/page_alloc.c:2680
 __folio_put+0x32a/0x450 mm/swap.c:112
 folio_put include/linux/mm.h:1489 [inline]
 migrate_folio_done+0x298/0x340 mm/migrate.c:1188
 migrate_folio_move mm/migrate.c:1410 [inline]
 migrate_pages_batch+0x1d08/0x3150 mm/migrate.c:1899
 migrate_pages_sync+0x131/0x910 mm/migrate.c:1965
 migrate_pages+0x1a46/0x21f0 mm/migrate.c:2074
 do_mbind+0x6c0/0xed0 mm/mempolicy.c:1394
 kernel_mbind+0x1e8/0x200 mm/mempolicy.c:1537
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3b9b98cd29
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f3b9c7a1038 EFLAGS: 00000246 ORIG_RAX: 00000000000000ed
RAX: ffffffffffffffda RBX: 00007f3b9bba6240 RCX: 00007f3b9b98cd29
RDX: 0000000000000000 RSI: 0000000000800000 RDI: 0000000020001000
RBP: 00007f3b9ba0e2a0 R08: 0000000000000000 R09: 0000000000000002
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f3b9bba6240 R15: 00007fff264b7498
 </TASK>
rcu: rcu_preempt kthread starved for 10491 jiffies! g117457 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:27632 pid:17    tgid:17    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5377 [inline]
 __schedule+0x1142/0x5b60 kernel/sched/core.c:6764
 __schedule_loop kernel/sched/core.c:6841 [inline]
 schedule+0xe7/0x350 kernel/sched/core.c:6856
 schedule_timeout+0x124/0x280 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x1eb/0xb00 kernel/rcu/tree.c:2024
 rcu_gp_kthread+0x271/0x380 kernel/rcu/tree.c:2226
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 4230 Comm: kworker/u8:7 Not tainted 6.13.0-syzkaller-06167-g0afd22092df4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0x4c6/0x12c0 kernel/smp.c:885
Code: 0c 00 85 ed 74 4d 48 b8 00 00 00 00 00 fc ff df 4d 89 fc 4c 89 fd 49 c1 ec 03 83 e5 07 49 01 c4 83 c5 03 e8 fc 04 0c 00 f3 90 <41> 0f b6 04 24 40 38 c5 7c 08 84 c0 0f 85 e8 0b 00 00 8b 43 08 31
RSP: 0000:ffffc9000e537928 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b8646980 RCX: ffffffff81adc2da
RDX: ffff8880346e0000 RSI: ffffffff81adc2b4 RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000006 R12: ffffed10170c8d31
R13: 0000000000000001 R14: ffff8880b873fe00 R15: ffff8880b8646988
FS:  0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7016202d58 CR3: 000000000df80000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 </IRQ>
 <TASK>
 on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1052
 on_each_cpu include/linux/smp.h:71 [inline]
 text_poke_sync arch/x86/kernel/alternative.c:2114 [inline]
 text_poke_bp_batch+0x22b/0x760 arch/x86/kernel/alternative.c:2324
 text_poke_flush arch/x86/kernel/alternative.c:2515 [inline]
 text_poke_flush arch/x86/kernel/alternative.c:2512 [inline]
 text_poke_finish+0x30/0x40 arch/x86/kernel/alternative.c:2522
 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
 jump_label_update+0x1d7/0x400 kernel/jump_label.c:920
 static_key_enable_cpuslocked+0x1b7/0x270 kernel/jump_label.c:210
 static_key_enable+0x1a/0x20 kernel/jump_label.c:223
 toggle_allocation_gate mm/kfence/core.c:849 [inline]
 toggle_allocation_gate+0xfc/0x260 mm/kfence/core.c:841
 process_one_work+0x9c5/0x1ba0 kernel/workqueue.c:3236
 process_scheduled_works kernel/workqueue.c:3317 [inline]
 worker_thread+0x6c8/0xf00 kernel/workqueue.c:3398
 kthread+0x3af/0x750 kernel/kthread.c:464
 ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>