rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	0-...!: (1 GPs behind) idle=cab4/1/0x4000000000000000 softirq=24356/24357 fqs=1
rcu: 	(detected by 1, t=10502 jiffies, g=17101, q=553 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 7930 Comm: syz.4.665 Not tainted 6.16.0-rc3-syzkaller-00042-g78f4e737a53e #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:arch_static_branch arch/x86/include/asm/jump_label.h:36 [inline]
RIP: 0010:trace_lock_release include/trace/events/lock.h:69 [inline]
RIP: 0010:lock_release+0x25/0x3e0 kernel/locking/lockdep.c:5882
Code: 90 90 90 90 90 f3 0f 1e fa 55 41 57 41 56 41 55 41 54 53 48 83 ec 30 49 89 f5 49 89 fe 65 48 8b 05 50 9e fb 10 48 89 44 24 28 <0f> 1f 44 00 00 65 8b 05 53 9e fb 10 83 f8 08 0f 83 9a 02 00 00 89
RSP: 0018:ffffc90000007bf8 EFLAGS: 00000082
RAX: bbc03236b5903400 RBX: ffff8880216e62e8 RCX: 1ffff110042dcc65
RDX: 0000000000010000 RSI: ffffffff897f343f RDI: ffff8880216e6300
RBP: ffff8880338ec950 R08: 0000000000000003 R09: 0000000000000004
R10: dffffc0000000000 R11: fffff52000000f7c R12: ffff8880216e6340
R13: ffffffff897f343f R14: ffff8880216e6300 R15: ffff8880338ee400
FS:  00007efd8df196c0(0000) GS:ffff888125c83000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f045744dc82 CR3: 00000000788f4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
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+0x99f/0xc90 net/sched/sch_taprio.c:981
 __run_hrtimer kernel/time/hrtimer.c:1761 [inline]
 __hrtimer_run_queues+0x529/0xc60 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+0x10b/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:__raw_spin_unlock_irq include/linux/spinlock_api_smp.h:160 [inline]
RIP: 0010:_raw_spin_unlock_irq+0x29/0x50 kernel/locking/spinlock.c:202
Code: 90 f3 0f 1e fa 53 48 89 fb 48 83 c7 18 48 8b 74 24 08 e8 ea 0b 3c f6 48 89 df e8 42 a3 3c f6 e8 6d b2 65 f6 fb bf 01 00 00 00 <e8> 52 9d 2e f6 65 8b 05 4b aa 37 07 85 c0 74 07 5b c3 cc cc cc cc
RSP: 0018:ffffc90003e7ea18 EFLAGS: 00000286
RAX: bbc03236b5903400 RBX: ffff88807c129740 RCX: bbc03236b5903400
RDX: 0000000000000006 RSI: ffffffff8d96ea60 RDI: 0000000000000001
RBP: ffff88807c129738 R08: ffffffff8f9fe1f7 R09: 1ffffffff1f3fc3e
R10: dffffc0000000000 R11: fffffbfff1f3fc3f R12: 1ffffd4000092788
R13: ffffea0000493c48 R14: 0000000000020000 R15: 0000000000000000
 spin_unlock_irq include/linux/spinlock.h:401 [inline]
 __remove_mapping+0x86a/0xad0 mm/vmscan.c:823
 shrink_folio_list+0x29d0/0x4d10 mm/vmscan.c:1552
 reclaim_folio_list+0xee/0x500 mm/vmscan.c:2232
 reclaim_pages+0x49a/0x5b0 mm/vmscan.c:2269
 madvise_cold_or_pageout_pte_range+0x19da/0x1d60 mm/madvise.c:564
 walk_pmd_range mm/pagewalk.c:130 [inline]
 walk_pud_range mm/pagewalk.c:226 [inline]
 walk_p4d_range mm/pagewalk.c:264 [inline]
 walk_pgd_range+0x1093/0x1e70 mm/pagewalk.c:305
 __walk_page_range+0x14c/0x710 mm/pagewalk.c:412
 walk_page_range_mm+0x42d/0x620 mm/pagewalk.c:505
 madvise_pageout_page_range mm/madvise.c:623 [inline]
 madvise_pageout mm/madvise.c:650 [inline]
 madvise_vma_behavior mm/madvise.c:1280 [inline]
 madvise_walk_vmas mm/madvise.c:1541 [inline]
 madvise_do_behavior+0x1c01/0x2e70 mm/madvise.c:1733
 do_madvise+0x174/0x220 mm/madvise.c:1826
 __do_sys_madvise mm/madvise.c:1835 [inline]
 __se_sys_madvise mm/madvise.c:1833 [inline]
 __x64_sys_madvise+0xa7/0xc0 mm/madvise.c:1833
 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: 0033:0x7efd8d18e929
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007efd8df19038 EFLAGS: 00000246 ORIG_RAX: 000000000000001c
RAX: ffffffffffffffda RBX: 00007efd8d3b6080 RCX: 00007efd8d18e929
RDX: 0000000000000015 RSI: 0000000000600000 RDI: 0000200000000000
RBP: 00007efd8d210b39 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007efd8d3b6080 R15: 00007ffd23fafa78
 </TASK>
rcu: rcu_preempt kthread starved for 10500 jiffies! g17101 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:26792 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00004000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5396 [inline]
 __schedule+0x16a2/0x4cb0 kernel/sched/core.c:6785
 __schedule_loop kernel/sched/core.c:6863 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:6878
 schedule_timeout+0x12b/0x270 kernel/time/sleep_timeout.c:99
 rcu_gp_fqs_loop+0x301/0x1540 kernel/rcu/tree.c:2054
 rcu_gp_kthread+0x99/0x390 kernel/rcu/tree.c:2256
 kthread+0x70e/0x8a0 kernel/kthread.c:464
 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: 7500 Comm: syz.4.665 Not tainted 6.16.0-rc3-syzkaller-00042-g78f4e737a53e #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
RIP: 0010:native_pause arch/x86/include/asm/vdso/processor.h:13 [inline]
RIP: 0010:cpu_relax arch/x86/include/asm/vdso/processor.h:18 [inline]
RIP: 0010:csd_lock_wait kernel/smp.c:340 [inline]
RIP: 0010:smp_call_function_many_cond+0xf67/0x12d0 kernel/smp.c:885
Code: 00 00 00 45 8b 2f 44 89 ee 83 e6 01 31 ff e8 60 78 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 0b 74 0b 00 eb 37 <f3> 90 43 0f b6 04 2c 84 c0 75 10 41 f7 07 01 00 00 00 74 1e e8 f0
RSP: 0000:ffffc90003147720 EFLAGS: 00000293
RAX: ffffffff81b4d830 RBX: ffff8880b873b040 RCX: ffff888031fa8000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc90003147880 R08: ffffffff8f9fe1f7 R09: 1ffffffff1f3fc3e
R10: dffffc0000000000 R11: fffffbfff1f3fc3f R12: 1ffff110170c835d
R13: dffffc0000000000 R14: 0000000000000000 R15: ffff8880b8641ae8
FS:  0000555588f47500(0000) GS:ffff888125d83000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007efd8d3afa38 CR3: 00000000788f4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1052
 __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+0x6b1/0x12c0 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:3635 [inline]
 do_wp_page+0x1bc2/0x5800 mm/memory.c:4030
 handle_pte_fault mm/memory.c:6085 [inline]
 __handle_mm_fault+0x1144/0x5620 mm/memory.c:6212
 handle_mm_fault+0x2d5/0x7f0 mm/memory.c:6381
 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: 0033:0x7efd8d04d9fc
Code: 23 83 c0 01 44 39 d0 75 dc 48 89 f0 25 ff 1f 00 00 49 89 34 c1 41 88 3c 00 31 c0 c3 66 90 41 38 3c 10 74 0b 41 88 3c 10 31 c0 <49> 89 34 d1 c3 b8 01 00 00 00 c3 66 0f 1f 84 00 00 00 00 00 48 83
RSP: 002b:00007ffd23fafaa8 EFLAGS: 00010246
RAX: 0000000000000000 RBX: 00007efd8dee5720 RCX: 0000000000000000
RDX: 0000000000001b47 RSI: ffffffff81667b47 RDI: 0000000000000001
RBP: ffffffff81667b47 R08: 00007efd8d3a0000 R09: 00007efd8d3a2000
R10: 0000000081667b4b R11: 0000000000000001 R12: 0000000000000001
R13: 0000000000000002 R14: ffffffff81667ac1 R15: 0000000000000002
 </TASK>