rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (0 ticks this GP) idle=1d1c/1/0x4000000000000000 softirq=63195/63195 fqs=0
rcu: 	(detected by 1, t=10506 jiffies, g=58417, q=176 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5841 Comm: syz-executor Not tainted 6.15.0-rc1-syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:debug_object_deactivate+0x28a/0x390 lib/debugobjects.c:896
Code: 8b 74 24 08 e8 27 20 27 07 48 8d 7c 24 40 48 c7 c6 c0 e7 a0 8c e8 86 fb ff ff 49 c7 c7 20 70 65 93 48 c7 44 24 20 0e 36 e0 45 <48> 8b 44 24 18 41 c7 04 06 00 00 00 00 41 c7 44 06 09 00 00 00 00
RSP: 0018:ffffc90000007c20 EFLAGS: 00000046
RAX: 993f338e64af8b00 RBX: ffff88802ea9ed58 RCX: 0000000000010004
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000001
RBP: ffffc90000007d10 R08: ffffffff9a9464b3 R09: 1ffffffff3528c96
R10: dffffc0000000000 R11: fffffbfff3528c97 R12: 1ffff11005d53dad
R13: ffff88802ea9ed6c R14: dffffc0000000000 R15: ffffffff93657020
FS:  0000555558546500(0000) GS:ffff888124fc9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3001eff8 CR3: 0000000063174000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 debug_hrtimer_deactivate kernel/time/hrtimer.c:450 [inline]
 debug_deactivate+0x1b/0x220 kernel/time/hrtimer.c:490
 __run_hrtimer kernel/time/hrtimer.c:1729 [inline]
 __hrtimer_run_queues+0x310/0xd40 kernel/time/hrtimer.c:1825
 hrtimer_interrupt+0x403/0xa40 kernel/time/hrtimer.c:1887
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1038 [inline]
 __sysvec_apic_timer_interrupt+0x110/0x420 arch/x86/kernel/apic/apic.c:1055
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 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:__kasan_check_write+0x0/0x20 mm/kasan/shadow.c:36
Code: 48 8b 0c 24 31 d2 e9 cf e6 ff ff 66 66 66 66 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 <f3> 0f 1e fa 89 f6 48 8b 0c 24 ba 01 00 00 00 e9 9c e6 ff ff 66 66
RSP: 0018:ffffc9000423f2d8 EFLAGS: 00000293
RAX: ffffffff82119a92 RBX: 0000000000000000 RCX: ffff88802b23bc00
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffea0001b4ab70
RBP: ffffc9000423f610 R08: ffffffff82119a83 R09: 1ffffd4000369568
R10: dffffc0000000000 R11: fffff94000369569 R12: ffffea0001b4ab40
R13: ffff8880635eed08 R14: ffffea0001b4ab40 R15: ffff888063529de0
 instrument_atomic_read_write include/linux/instrumented.h:96 [inline]
 atomic_inc include/linux/atomic/atomic-instrumented.h:435 [inline]
 __folio_dup_file_rmap include/linux/rmap.h:557 [inline]
 folio_dup_file_rmap_pte include/linux/rmap.h:596 [inline]
 copy_present_ptes mm/memory.c:1039 [inline]
 copy_pte_range+0x901/0x6680 mm/memory.c:1167
 copy_pmd_range mm/memory.c:1255 [inline]
 copy_pud_range mm/memory.c:1292 [inline]
 copy_p4d_range mm/memory.c:1316 [inline]
 copy_page_range+0xe57/0x13a0 mm/memory.c:1410
 dup_mmap kernel/fork.c:726 [inline]
 dup_mm kernel/fork.c:1734 [inline]
 copy_mm+0x130d/0x22c0 kernel/fork.c:1786
 copy_process+0x17de/0x3d10 kernel/fork.c:2429
 kernel_clone+0x227/0x880 kernel/fork.c:2844
 __do_sys_clone kernel/fork.c:2987 [inline]
 __se_sys_clone kernel/fork.c:2971 [inline]
 __x64_sys_clone+0x268/0x2e0 kernel/fork.c:2971
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fddcd5839d3
Code: 1f 84 00 00 00 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 35 89 c2 85 c0 75 2c 64 48 8b 04 25 10 00 00
RSP: 002b:00007ffff99a40e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fddcd5839d3
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000001
R10: 00005555585467d0 R11: 0000000000000246 R12: 0000000000000000
R13: 00000000000927c0 R14: 000000000005717a R15: 00007ffff99a4280
 </TASK>
rcu: rcu_preempt kthread timer wakeup didn't happen for 10505 jiffies! g58417 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402
rcu: 	Possible timer handling issue on cpu=0 timer-softirq=24146
rcu: rcu_preempt kthread starved for 10506 jiffies! g58417 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:26976 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5382 [inline]
 __schedule+0x1b33/0x51f0 kernel/sched/core.c:6767
 __schedule_loop kernel/sched/core.c:6845 [inline]
 schedule+0x163/0x360 kernel/sched/core.c:6860
 schedule_timeout+0x15b/0x2b0 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x2e1/0x1340 kernel/rcu/tree.c:2046
 rcu_gp_kthread+0xa7/0x3b0 kernel/rcu/tree.c:2248
 kthread+0x7b7/0x940 kernel/kthread.c:464
 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>