rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=f744/1/0x4000000000000000 softirq=25897/25899 fqs=95
rcu: 	(detected by 1, t=10502 jiffies, g=17425, q=1311 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 6693 Comm: rm Not tainted 6.16.0-syzkaller-12084-g33caa208dba6 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:lookup_object lib/debugobjects.c:-1 [inline]
RIP: 0010:debug_object_deactivate+0xb6/0x250 lib/debugobjects.c:875
Code: 81 c3 88 c7 c7 99 48 89 df e8 a6 cf ab 06 48 89 04 24 4c 89 f8 48 c1 e8 03 80 3c 28 00 74 08 4c 89 ff e8 8d 9a 53 fd 4d 8b 3f <45> 31 f6 eb 06 4d 8b 3f 41 ff c6 4d 85 ff 74 36 4d 8d 6f 18 4c 89
RSP: 0018:ffffc90000007ca8 EFLAGS: 00000046
RAX: 1ffffffff33ae733 RBX: ffffffff99d739a0 RCX: dffffc0000000000
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffc90000007b80
RBP: dffffc0000000000 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000000f70 R12: ffff88807b1c4340
R13: dffffc0000000000 R14: 185a382d7769ff47 R15: ffff8880464a0700
FS:  00007f05f5a63c80(0000) GS:ffff888125c21000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f05f5bf16d0 CR3: 00000000782a0000 CR4: 00000000003526f0
Call Trace:
 <IRQ>
 debug_hrtimer_deactivate kernel/time/hrtimer.c:450 [inline]
 debug_deactivate+0x1d/0x200 kernel/time/hrtimer.c:490
 __run_hrtimer kernel/time/hrtimer.c:1729 [inline]
 __hrtimer_run_queues+0x2b0/0xc60 kernel/time/hrtimer.c:1825
 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1887
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1039 [inline]
 __sysvec_apic_timer_interrupt+0x108/0x410 arch/x86/kernel/apic/apic.c:1056
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1050 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 arch/x86/kernel/apic/apic.c:1050
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_is_held_type+0x137/0x190 kernel/locking/lockdep.c:5945
Code: 01 75 44 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 05 f9 33 27 07 <48> 3b 44 24 08 75 43 89 d8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f
RSP: 0018:ffffc9000404f598 EFLAGS: 00000206
RAX: 6081508414e9db00 RBX: 0000000000000000 RCX: 6081508414e9db00
RDX: 0000000000000000 RSI: ffffffff8dba39a7 RDI: ffffffff8be32680
RBP: 00000000ffffffff R08: 00000000ffffffff R09: 0000000000000000
R10: ffff8880791bdbd0 R11: ffffffff81ac3890 R12: 0000000000000246
R13: ffff888033c4da00 R14: ffffffff8e139f40 R15: 0000000000000001
 lock_is_held include/linux/lockdep.h:249 [inline]
 __might_resched+0xa6/0x610 kernel/sched/core.c:8919
 down_write+0x76/0x1f0 kernel/locking/rwsem.c:1589
 lock_anon_vma_root mm/rmap.c:250 [inline]
 anon_vma_clone+0x125/0x4f0 mm/rmap.c:297
 __split_vma+0x351/0xa00 mm/vma.c:535
 split_vma mm/vma.c:598 [inline]
 vma_modify+0x13b3/0x1970 mm/vma.c:1631
 vma_modify_flags+0x1e8/0x230 mm/vma.c:1649
 mprotect_fixup+0x407/0x9c0 mm/mprotect.c:819
 do_mprotect_pkey+0x8cd/0xce0 mm/mprotect.c:993
 __do_sys_mprotect mm/mprotect.c:1014 [inline]
 __se_sys_mprotect mm/mprotect.c:1011 [inline]
 __x64_sys_mprotect+0x80/0x90 mm/mprotect.c:1011
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f05f5dfa2c7
Code: 89 3d fd 3f 01 00 eb 90 0f 1f 00 f7 d8 89 05 f0 3f 01 00 48 c7 c0 ff ff ff ff eb 91 0f 1f 80 00 00 00 00 b8 0a 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8d 0d c9 3f 01 00 f7 d8 89 01 48 83
RSP: 002b:00007fff724a0f08 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00007f05f5dcf050 RCX: 00007f05f5dfa2c7
RDX: 0000000000000001 RSI: 0000000000001000 RDI: 00007f05f5b19000
RBP: 00007fff724a11d0 R08: 0000000000000000 R09: 00007f05f5b6b870
R10: 00007f05f5dcf050 R11: 0000000000000206 R12: 0000000000000010
R13: 0000004ab25eae98 R14: 0000000000000000 R15: 00007f05f5e0e310
 </TASK>
rcu: rcu_preempt kthread starved for 10311 jiffies! g17425 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:27160 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5357 [inline]
 __schedule+0x1798/0x4cc0 kernel/sched/core.c:6961
 __schedule_loop kernel/sched/core.c:7043 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:7058
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2083
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2285
 kthread+0x70e/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x3fc/0x770 arch/x86/kernel/process.c:148
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
 </TASK>
rcu: Stack dump where RCU GP kthread last ran:
CPU: 1 UID: 0 PID: 6295 Comm: udevd Not tainted 6.16.0-syzkaller-12084-g33caa208dba6 #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:get_current arch/x86/include/asm/current.h:25 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x8/0x70 kernel/kcov.c:216
Code: 8b 3d 44 29 fe 0b 48 89 de 5b e9 93 9a 58 00 cc cc cc 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 04 24 <65> 48 8b 0c 25 08 f0 9f 92 65 8b 15 68 44 e0 10 81 e2 00 01 ff 00
RSP: 0000:ffffc90002ec7718 EFLAGS: 00000202
RAX: ffffffff81b44d6b RBX: 1ffff110170c8341 RCX: ffff88802e95bc00
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90002ec78a0 R08: ffffffff8fa34637 R09: 1ffffffff1f468c6
R10: dffffc0000000000 R11: fffffbfff1f468c7 R12: ffff8880b8641a08
R13: dffffc0000000000 R14: ffff8880b873b1c0 R15: 0000000000000000
FS:  00007f8bc88a3880(0000) GS:ffff888125d21000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555a04e64608 CR3: 0000000079168000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 csd_lock_wait kernel/smp.c:342 [inline]
 smp_call_function_many_cond+0xd4b/0x12d0 kernel/smp.c:877
 on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1044
 __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+0x6b1/0x12d0 arch/x86/mm/tlb.c:1451
 flush_tlb_page arch/x86/include/asm/tlbflush.h:324 [inline]
 ptep_clear_flush+0x120/0x170 mm/pgtable-generic.c:101
 wp_page_copy mm/memory.c:3618 [inline]
 do_wp_page+0x1bc2/0x5800 mm/memory.c:4013
 handle_pte_fault mm/memory.c:6068 [inline]
 __handle_mm_fault+0x1033/0x5440 mm/memory.c:6195
 handle_mm_fault+0x40a/0x8e0 mm/memory.c:6364
 do_user_addr_fault+0xa81/0x1390 arch/x86/mm/fault.c:1336
 handle_page_fault arch/x86/mm/fault.c:1476 [inline]
 exc_page_fault+0x76/0xf0 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f8bc80b5b69
Code: 10 48 81 f9 ff 03 00 00 76 28 48 8b 57 20 48 85 d2 74 1f 48 3b 7a 28 75 76 48 8b 4f 28 48 3b 79 20 75 6c 48 83 78 20 00 74 17 <48> 89 4a 28 48 89 51 20 48 83 c4 08 c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007ffc301e9fd0 EFLAGS: 00010202
RAX: 00007f8bc81f1f30 RBX: 00000000000004a0 RCX: 0000555a04e645e0
RDX: 0000555a04e645e0 RSI: 00007f8bc81f1f30 RDI: 0000555a04e645e0
RBP: 00007f8bc81f1ac0 R08: 00000000000004a0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000555a04e61e80
R13: 00007f8bc81f1ac0 R14: 00000000000004a0 R15: 00007f8bc81f1ac0
 </TASK>