rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (0 ticks this GP) idle=d3c4/1/0x4000000000000000 softirq=25574/25574 fqs=0
	(detected by 0, t=10506 jiffies, g=39177, q=145 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 8793 Comm: syz.6.1458 Not tainted 6.1.144-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:__run_hrtimer kernel/time/hrtimer.c:1721 [inline]
RIP: 0010:__hrtimer_run_queues+0x2e4/0xd60 kernel/time/hrtimer.c:1816
Code: 02 ef 0f 00 85 db 0f 84 8f 04 00 00 e8 95 eb 0f 00 eb 05 e8 8e eb 0f 00 48 8b 5c 24 18 4c 89 e7 e8 51 34 00 00 48 8b 44 24 58 <42> 80 3c 28 00 74 08 48 89 df e8 9d 67 61 00 4c 89 23 48 8b 74 24
RSP: 0018:ffffc900001e0d20 EFLAGS: 00000006
RAX: 1ffff110171e54d9 RBX: ffff8880b8f2a6c8 RCX: ffff88802ab75940
RDX: 0000000000010000 RSI: ffffffff8adf1c00 RDI: ffffffff8adf1bc0
RBP: ffffc900001e0e88 R08: dffffc0000000000 R09: fffffbfff1c3ecc6
R10: fffffbfff1c3ecc6 R11: 1ffffffff1c3ecc5 R12: ffff88805744f340
R13: dffffc0000000000 R14: 185a93e412a4f77f R15: ffff8880b8f2a680
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000003c80 CR3: 00000000724ca000 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:1878
 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:refill_stock+0x27b/0x440 mm/memcontrol.c:2319
Code: c8 ad ff 48 c7 44 24 60 00 00 00 00 9c 8f 44 24 60 f6 44 24 61 02 75 53 f7 c3 00 02 00 00 74 01 fb 48 c7 44 24 20 0e 36 e0 45 <48> 8b 44 24 18 4a c7 04 20 00 00 00 00 66 42 c7 44 20 09 00 00 42
RSP: 0018:ffffc90003bffc20 EFLAGS: 00000206
RAX: c22f73e62163fc00 RBX: 0000000000000a06 RCX: c22f73e62163fc00
RDX: dffffc0000000000 RSI: ffffffff8a8c0460 RDI: ffffffff8adf1c20
RBP: ffffc90003bffce8 R08: dffffc0000000000 R09: fffffbfff1c3ecc6
R10: fffffbfff1c3ecc6 R11: 1ffffffff1c3ecc5 R12: dffffc0000000000
R13: ffff88802ab75940 R14: ffff8880b8f368d0 R15: ffff8880b8f368f8
 obj_cgroup_uncharge_pages mm/memcontrol.c:3078 [inline]
 __memcg_kmem_uncharge_page+0xed/0x280 mm/memcontrol.c:3151
 memcg_kmem_uncharge_page include/linux/memcontrol.h:1769 [inline]
 exit_task_stack_account+0x90/0x310 kernel/fork.c:517
 do_exit+0x19dd/0x2400 kernel/exit.c:914
 do_group_exit+0x217/0x2d0 kernel/exit.c:1022
 __do_sys_exit_group kernel/exit.c:1033 [inline]
 __se_sys_exit_group kernel/exit.c:1031 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1031
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f9a1138e929
Code: Unable to access opcode bytes at 0x7f9a1138e8ff.
RSP: 002b:00007ffd97d536b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9a1138e929
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffd97d5371c R08: 0000000497d537af R09: 00000000000927c0
R10: 000000000000856c R11: 0000000000000246 R12: 0000000000000086
R13: 00000000000927c0 R14: 000000000003b856 R15: 00007ffd97d53770
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10505 jiffies! g39177 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=1 timer-softirq=13520
rcu: rcu_preempt kthread starved for 10506 jiffies! g39177 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:27040 pid:16    ppid:2      flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5244 [inline]
 __schedule+0x10e9/0x40d0 kernel/sched/core.c:6561
 schedule+0xb9/0x180 kernel/sched/core.c:6637
 schedule_timeout+0x15c/0x280 kernel/time/timer.c:1965
 rcu_gp_fqs_loop+0x2f2/0x1310 kernel/rcu/tree.c:1706
 rcu_gp_kthread+0x95/0x380 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: 8793 Comm: syz.6.1458 Not tainted 6.1.144-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:122 [inline]
RIP: 0010:rcu_is_watching+0xc/0xa0 kernel/rcu/tree.c:721
Code: a0 18 b3 8c 4c 89 f6 e8 e2 65 c4 02 e9 53 ff ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 41 57 41 56 53 65 ff 05 ac 68 97 7e <e8> 6f df ac 08 89 c3 83 f8 08 73 60 49 bf 00 00 00 00 00 fc ff df
RSP: 0018:ffffc900001e0b40 EFLAGS: 00000083
RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff8162eaa9
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8e1f6628
RBP: ffffc900001e0c68 R08: dffffc0000000000 R09: fffffbfff1c3ecc6
R10: fffffbfff1c3ecc6 R11: 1ffffffff1c3ecc5 R12: 0000000000000001
R13: 1ffff9200003c178 R14: 0000000000000000 R15: dffffc0000000000
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000003c80 CR3: 00000000724ca000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 trace_lock_acquire include/trace/events/lock.h:24 [inline]
 lock_acquire+0xe8/0x490 kernel/locking/lockdep.c:5633
 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline]
 _raw_spin_lock_irq+0x9f/0xe0 kernel/locking/spinlock.c:170
 __run_hrtimer kernel/time/hrtimer.c:1756 [inline]
 __hrtimer_run_queues+0x63a/0xd60 kernel/time/hrtimer.c:1816
 hrtimer_interrupt+0x3c5/0x9c0 kernel/time/hrtimer.c:1878
 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:refill_stock+0x27b/0x440 mm/memcontrol.c:2319
Code: c8 ad ff 48 c7 44 24 60 00 00 00 00 9c 8f 44 24 60 f6 44 24 61 02 75 53 f7 c3 00 02 00 00 74 01 fb 48 c7 44 24 20 0e 36 e0 45 <48> 8b 44 24 18 4a c7 04 20 00 00 00 00 66 42 c7 44 20 09 00 00 42
RSP: 0018:ffffc90003bffc20 EFLAGS: 00000206
RAX: c22f73e62163fc00 RBX: 0000000000000a06 RCX: c22f73e62163fc00
RDX: dffffc0000000000 RSI: ffffffff8a8c0460 RDI: ffffffff8adf1c20
RBP: ffffc90003bffce8 R08: dffffc0000000000 R09: fffffbfff1c3ecc6
R10: fffffbfff1c3ecc6 R11: 1ffffffff1c3ecc5 R12: dffffc0000000000
R13: ffff88802ab75940 R14: ffff8880b8f368d0 R15: ffff8880b8f368f8
 obj_cgroup_uncharge_pages mm/memcontrol.c:3078 [inline]
 __memcg_kmem_uncharge_page+0xed/0x280 mm/memcontrol.c:3151
 memcg_kmem_uncharge_page include/linux/memcontrol.h:1769 [inline]
 exit_task_stack_account+0x90/0x310 kernel/fork.c:517
 do_exit+0x19dd/0x2400 kernel/exit.c:914
 do_group_exit+0x217/0x2d0 kernel/exit.c:1022
 __do_sys_exit_group kernel/exit.c:1033 [inline]
 __se_sys_exit_group kernel/exit.c:1031 [inline]
 __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1031
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f9a1138e929
Code: Unable to access opcode bytes at 0x7f9a1138e8ff.
RSP: 002b:00007ffd97d536b8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9a1138e929
RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 00007ffd97d5371c R08: 0000000497d537af R09: 00000000000927c0
R10: 000000000000856c R11: 0000000000000246 R12: 0000000000000086
R13: 00000000000927c0 R14: 000000000003b856 R15: 00007ffd97d53770
 </TASK>
vkms_vblank_simulate: vblank timer overrun