rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 GPs behind) idle=113c/1/0x4000000000000000 softirq=21479/21480 fqs=11
rcu: 	(detected by 0, t=10502 jiffies, g=14337, q=1400 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 6476 Comm: modprobe Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:lockdep_recursion_finish kernel/locking/lockdep.c:470 [inline]
RIP: 0010:lock_release+0x160/0x2f0 kernel/locking/lockdep.c:5891
Code: e8 c5 fc ff ff 0b 05 4f cd 1a 19 0f 84 00 01 00 00 48 c7 c7 1d d9 ad 8d e8 cd 17 cd 09 b8 ff ff ff ff 65 0f c1 05 38 9e 0b 12 <83> f8 01 0f 85 1d 01 00 00 9c 58 f6 c4 02 0f 85 08 01 00 00 41 f7
RSP: 0000:ffffc90000a08d38 EFLAGS: 00000057
RAX: 0000000000000001 RBX: ffff8880315de300 RCX: ffffc90000a08d44
RDX: 0000000000000006 RSI: ffffffff8dadd91d RDI: ffffffff8bf1e2c0
RBP: ffff888025d98c00 R08: 0000000000000004 R09: 0000000000000002
R10: 0000000000000002 R11: 0000000000000001 R12: ffffffff8972e6ab
R13: 0000000000000006 R14: ffff88807f242480 R15: 0000000000000007
FS:  00007f77882dac80(0000) GS:ffff888124ad9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f778837d000 CR3: 000000002ac5c000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 __raw_spin_unlock include/linux/spinlock_api_smp.h:141 [inline]
 _raw_spin_unlock+0x16/0x50 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:391 [inline]
 advance_sched+0x62b/0xc80 net/sched/sch_taprio.c:986
 __run_hrtimer kernel/time/hrtimer.c:1777 [inline]
 __hrtimer_run_queues+0x202/0xad0 kernel/time/hrtimer.c:1841
 hrtimer_interrupt+0x397/0x8e0 kernel/time/hrtimer.c:1903
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1041 [inline]
 __sysvec_apic_timer_interrupt+0x10b/0x3f0 arch/x86/kernel/apic/apic.c:1058
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline]
 sysvec_apic_timer_interrupt+0x9f/0xc0 arch/x86/kernel/apic/apic.c:1052
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:697
RIP: 0010:page_table_check_set+0x31e/0x750 mm/page_table_check.c:116
Code: 4c 89 ef e8 f4 c6 8b ff 49 39 ed 0f 84 f6 02 00 00 e8 36 cc 8b ff 48 8b 1d bf 13 2b 0c 31 ff 44 89 f6 4c 01 e3 e8 02 c7 8b ff <45> 84 f6 0f 85 e4 fe ff ff e8 14 cc 8b ff be 04 00 00 00 48 89 df
RSP: 0000:ffffc900039978c8 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff88802101ce28 RCX: ffffffff82316c8e
RDX: ffff88807f242480 RSI: 0000000000000000 RDI: 0000000000000001
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88802101cde0
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000
 __page_table_check_ptes_set+0x318/0x420 mm/page_table_check.c:209
 page_table_check_ptes_set include/linux/page_table_check.h:76 [inline]
 set_ptes include/linux/pgtable.h:292 [inline]
 set_pte_range+0x4e8/0x740 mm/memory.c:5443
 filemap_map_order0_folio mm/filemap.c:3790 [inline]
 filemap_map_pages+0x59a/0x1b70 mm/filemap.c:3848
 do_fault_around mm/memory.c:5656 [inline]
 do_read_fault mm/memory.c:5689 [inline]
 do_fault mm/memory.c:5832 [inline]
 do_pte_missing+0xe33/0x3ba0 mm/memory.c:4361
 handle_pte_fault mm/memory.c:6177 [inline]
 __handle_mm_fault+0x1556/0x2aa0 mm/memory.c:6318
 handle_mm_fault+0x589/0xd10 mm/memory.c:6487
 do_user_addr_fault+0x60c/0x1370 arch/x86/mm/fault.c:1336
 handle_page_fault arch/x86/mm/fault.c:1476 [inline]
 exc_page_fault+0x64/0xc0 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7f778837d000
Code: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 <48> 83 ec 08 48 8b 05 cd af 00 00 48 85 c0 74 02 ff d0 48 83 c4 08
RSP: 002b:00007ffe21ddcd28 EFLAGS: 00010206
RAX: 00007f778837d000 RBX: 00007f7788646580 RCX: 00007ffe21ddcdd0
RDX: 00007ffe21ddcdd0 RSI: 00007ffe21ddcda8 RDI: 0000000000000004
RBP: 0000000000000004 R08: 00007f7788574ac0 R09: 0000000000000020
R10: 0000000000000004 R11: 0000000000000246 R12: 00007ffe21ddcda8
R13: 00007ffe21ddcdd0 R14: 00007f7788685310 R15: 0000000000000000
 </TASK>
rcu: rcu_preempt kthread starved for 10480 jiffies! g14337 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:28232 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5325 [inline]
 __schedule+0x1190/0x5de0 kernel/sched/core.c:6929
 __schedule_loop kernel/sched/core.c:7011 [inline]
 schedule+0xe7/0x3a0 kernel/sched/core.c:7026
 schedule_timeout+0x123/0x290 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x1ea/0xaf0 kernel/rcu/tree.c:2083
 rcu_gp_kthread+0x26d/0x380 kernel/rcu/tree.c:2285
 kthread+0x3c5/0x780 kernel/kthread.c:463
 ret_from_fork+0x675/0x7d0 arch/x86/kernel/process.c:158
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 0 UID: 0 PID: 6479 Comm: sed Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:csd_lock_wait kernel/smp.c:342 [inline]
RIP: 0010:smp_call_function_many_cond+0xdfd/0x1600 kernel/smp.c:877
Code: 57 48 8b 54 24 10 4c 89 74 24 10 49 89 d5 48 89 d5 48 89 54 24 18 49 c1 ed 03 83 e5 07 4d 01 e5 83 c5 03 e8 b5 0c 0c 00 f3 90 <41> 0f b6 45 00 40 38 c5 7c 08 84 c0 0f 85 e0 05 00 00 8b 43 08 31
RSP: 0018:ffffc90002f072f0 EFLAGS: 00000293
RAX: 0000000000000000 RBX: ffff8880b8540320 RCX: ffffffff81b12c21
RDX: ffff88801d7d4900 RSI: ffffffff81b12bfb RDI: 0000000000000005
RBP: 0000000000000003 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000001 R12: dffffc0000000000
R13: ffffed10170a8065 R14: 0000000000000001 R15: 0000000000000001
FS:  0000000000000000(0000) GS:ffff8881249d9000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fea4ff44e9c CR3: 0000000022328000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 on_each_cpu_cond_mask+0x40/0x90 kernel/smp.c:1043
 __flush_tlb_multi arch/x86/include/asm/paravirt.h:91 [inline]
 flush_tlb_multi arch/x86/mm/tlb.c:1361 [inline]
 flush_tlb_mm_range+0x4a0/0x17a0 arch/x86/mm/tlb.c:1451
 move_ptes mm/mremap.c:306 [inline]
 move_page_tables+0x1377/0x4230 mm/mremap.c:868
 relocate_vma_down+0x275/0x4c0 mm/vma_exec.c:66
 setup_arg_pages+0x522/0xbb0 fs/exec.c:690
 load_elf_binary+0xb5b/0x4fe0 fs/binfmt_elf.c:1028
 search_binary_handler fs/exec.c:1670 [inline]
 exec_binprm fs/exec.c:1702 [inline]
 bprm_execve fs/exec.c:1754 [inline]
 bprm_execve+0x8be/0x1640 fs/exec.c:1730
 do_execveat_common.isra.0+0x4a5/0x610 fs/exec.c:1860
 do_execve fs/exec.c:1934 [inline]
 __do_sys_execve fs/exec.c:2010 [inline]
 __se_sys_execve fs/exec.c:2005 [inline]
 __x64_sys_execve+0x8e/0xb0 fs/exec.c:2005
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xcd/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f810a717107
Code: Unable to access opcode bytes at 0x7f810a7170dd.
RSP: 002b:00007ffe9f1460a8 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 0000555df8e6be38 RCX: 00007f810a717107
RDX: 0000555df8e6be60 RSI: 0000555df8e6be38 RDI: 0000555df8e6bef0
RBP: 0000555df8e6bef0 R08: 00007ffe9f14ae9a R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000246 R12: 0000555df8e6be60
R13: 00007f810a8dce8b R14: 0000555df8e6be60 R15: 0000000000000000
 </TASK>