rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 1-...!: (1 ticks this GP) idle=1cdc/1/0x4000000000000000 softirq=263507/263507 fqs=2
(detected by 0, t=10503 jiffies, g=287517, q=113 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 22911 Comm: syz-executor.3 Not tainted 6.2.0-rc1-syzkaller-00084-gc8451c141e07 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:121 [inline]
RIP: 0010:lock_is_held_type+0x46/0x190 kernel/locking/lockdep.c:5704
Code: bd ff ff ff ff 83 3d 4c ac ea 03 00 0f 84 0d 01 00 00 65 8b 05 2b d0 3c 75 85 c0 0f 85 fe 00 00 00 65 4c 8b 2c 25 40 98 03 00 <41> 83 bd 34 0a 00 00 00 0f 85 e7 00 00 00 41 89 f6 49 89 ff 48 c7
RSP: 0018:ffffc900001e0998 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 1ffff9200003c13c RCX: 0000000080010003
RDX: 0000000000000000 RSI: 00000000ffffffff RDI: ffffffff8d523780
RBP: 00000000ffffffff R08: dffffc0000000000 R09: fffffbfff1d603fe
R10: fffffbfff1d603fe R11: 1ffffffff1d603fd R12: dffffc0000000000
R13: ffff88802a5ed7c0 R14: dffffc0000000000 R15: 0000000000000000
FS: 0000000000000000(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcb57ba8000 CR3: 0000000023b58000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_is_held include/linux/lockdep.h:283 [inline]
rcu_read_lock_sched_held+0x89/0x130 kernel/rcu/update.c:125
trace_lock_acquire+0x98/0x260 include/trace/events/lock.h:24
lock_acquire+0xa5/0x400 kernel/locking/lockdep.c:5639
__raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline]
_raw_spin_lock_irqsave+0xd1/0x120 kernel/locking/spinlock.c:162
debug_object_deactivate+0x61/0x420 lib/debugobjects.c:739
debug_hrtimer_deactivate kernel/time/hrtimer.c:425 [inline]
debug_deactivate kernel/time/hrtimer.c:481 [inline]
__run_hrtimer kernel/time/hrtimer.c:1653 [inline]
__hrtimer_run_queues+0x2f9/0xa60 kernel/time/hrtimer.c:1749
hrtimer_interrupt+0x3a6/0xfd0 kernel/time/hrtimer.c:1811
local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1096 [inline]
__sysvec_apic_timer_interrupt+0xf9/0x280 arch/x86/kernel/apic/apic.c:1113
sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1107
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:649
RIP: 0010:lock_acquire+0x21e/0x400 kernel/locking/lockdep.c:5672
Code: 23 00 74 08 4c 89 f7 e8 00 e8 77 00 f6 44 24 61 02 0f 85 76 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 04 2c 00 00 00 00 43 c7 44 2c 09 00 00 00 00 43 c7 44 2c 11
RSP: 0018:ffffc90003a0fb80 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 1ffff92000741f7c RCX: ffff88802a5ee1f0
RDX: dffffc0000000000 RSI: ffffffff8b0daae0 RDI: ffffffff8b6978c0
RBP: ffffc90003a0fcc8 R08: dffffc0000000000 R09: fffffbfff212de31
R10: fffffbfff212de31 R11: 1ffffffff212de30 R12: dffffc0000000000
R13: 1ffff92000741f78 R14: ffffc90003a0fbe0 R15: 0000000000000246
rcu_lock_acquire+0x20/0x30 include/linux/rcupdate.h:325
rcu_read_lock include/linux/rcupdate.h:764 [inline]
percpu_ref_put_many include/linux/percpu-refcount.h:330 [inline]
percpu_ref_put+0x1d/0x150 include/linux/percpu-refcount.h:351
css_put include/linux/cgroup_refcnt.h:79 [inline]
obj_cgroup_uncharge_pages mm/memcontrol.c:3083 [inline]
__memcg_kmem_uncharge_page+0x232/0x3a0 mm/memcontrol.c:3154
memcg_kmem_uncharge_page include/linux/memcontrol.h:1772 [inline]
exit_task_stack_account+0x98/0xd0 kernel/fork.c:516
do_exit+0x1819/0x2150 kernel/exit.c:909
do_group_exit+0x1fd/0x2b0 kernel/exit.c:1012
__do_sys_exit_group kernel/exit.c:1023 [inline]
__se_sys_exit_group kernel/exit.c:1021 [inline]
__x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1021
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x2b/0x70 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fcb57a8c0a9
Code: Unable to access opcode bytes at 0x7fcb57a8c07f.
RSP: 002b:00007ffeff768978 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007fcb57a8c0a9
RDX: 00007fcb57a3df5b RSI: ffffffffffffffb8 RDI: 0000000000000000
RBP: 0000000000000000 R08: 00007fcb57600000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007ffeff768a60
rcu: rcu_preempt kthread starved for 10495 jiffies! g287517 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:26488 pid:16 ppid:2 flags:0x00004000
Call Trace:
context_switch kernel/sched/core.c:5244 [inline]
__schedule+0x9d1/0xe40 kernel/sched/core.c:6555
schedule+0xcb/0x190 kernel/sched/core.c:6631
schedule_timeout+0x1b9/0x300 kernel/time/timer.c:2167
rcu_gp_fqs_loop+0x309/0x1070 kernel/rcu/tree.c:1656
rcu_gp_kthread+0xa5/0x390 kernel/rcu/tree.c:1855
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 PID: 4553 Comm: kworker/u4:8 Not tainted 6.2.0-rc1-syzkaller-00084-gc8451c141e07 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:csd_lock_wait kernel/smp.c:413 [inline]
RIP: 0010:smp_call_function_many_cond+0xe9c/0x1420 kernel/smp.c:987
Code: 83 e6 01 31 ff e8 d4 54 0b 00 41 83 e4 01 75 0e e8 a9 50 0b 00 eb 4c 0f 1f 80 00 00 00 00 f3 90 48 b8 00 00 00 00 00 fc ff df <0f> b6 04 03 84 c0 75 10 41 f7 06 01 00 00 00 74 23 e8 7e 50 0b 00
RSP: 0018:ffffc9000b7d7820 EFLAGS: 00000293
RAX: dffffc0000000000 RBX: 1ffff11017328139 RCX: ffff8880872ed7c0
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000b7d79c0 R08: ffffffff8182773c R09: fffffbfff212de31
R10: fffffbfff212de31 R11: 1ffffffff212de30 R12: 0000000000000001
R13: 0000000000000001 R14: ffff8880b99409c8 R15: ffff8880b983b280
FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f72ecf54000 CR3: 000000000d28e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_each_cpu_cond_mask+0x3b/0x80 kernel/smp.c:1155
on_each_cpu include/linux/smp.h:71 [inline]
text_poke_sync arch/x86/kernel/alternative.c:1772 [inline]
text_poke_bp_batch+0x2b4/0x850 arch/x86/kernel/alternative.c:1963
text_poke_flush arch/x86/kernel/alternative.c:2131 [inline]
text_poke_finish+0x16/0x30 arch/x86/kernel/alternative.c:2138
arch_jump_label_transform_apply+0x13/0x20 arch/x86/kernel/jump_label.c:146
static_key_enable_cpuslocked+0x129/0x250 kernel/jump_label.c:205
static_key_enable+0x16/0x20 kernel/jump_label.c:218
toggle_allocation_gate+0xb1/0x250 mm/kfence/core.c:799
process_one_work+0x81c/0xd10 kernel/workqueue.c:2289
worker_thread+0xb14/0x1330 kernel/workqueue.c:2436
kthread+0x266/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308