rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 	1-...!: (1 GPs behind) idle=7c1c/1/0x4000000000000000 softirq=62596/62597 fqs=0
rcu: 	Tasks blocked on level-0 rcu_node (CPUs 0-1): P13193/3:b..l P13170/1:b..l
rcu: 	(detected by 0, t=10502 jiffies, g=54037, q=755 ncpus=2)
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 9841 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:__run_hrtimer kernel/time/hrtimer.c:-1 [inline]
RIP: 0010:__hrtimer_run_queues+0x669/0xc60 kernel/time/hrtimer.c:1841
Code: 83 e3 01 75 20 e8 d7 5b 12 00 4c 89 e7 4c 89 fe 31 d2 e8 6a 2d 00 00 eb 11 e8 c3 5b 12 00 4c 8b 74 24 58 eb 0a e8 b7 5b 12 00 <48> 8b 5c 24 18 48 8b 74 24 30 42 0f b6 04 2e 84 c0 48 8b 54 24 20
RSP: 0018:ffffc90000a08d40 EFLAGS: 00000082
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 0000000000000018 RSI: ffff8880b8727d10 RDI: ffff88802f928340
RBP: ffffc90000a08e90 R08: ffff88802f928357 R09: ffff88802f928340
R10: dffffc0000000000 R11: ffffed1005f2506b R12: ffff88802f928340
R13: dffffc0000000000 R14: ffff8880b8727d18 R15: ffff8880b8727cc0
FS:  000055557966f500(0000) GS:ffff888125e0b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f482d3b6358 CR3: 0000000062be3000 CR4: 0000000000350ef0
Call Trace:
 <IRQ>
 hrtimer_interrupt+0x45b/0xaa0 kernel/time/hrtimer.c:1903
 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1041 [inline]
 __sysvec_apic_timer_interrupt+0x10b/0x410 arch/x86/kernel/apic/apic.c:1058
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1052 [inline]
 sysvec_apic_timer_interrupt+0xa1/0xc0 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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa8/0x110 kernel/locking/spinlock.c:194
Code: 74 05 e8 db eb 78 f6 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4f f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> d3 1a 41 f6 65 8b 05 dc 38 42 07 85 c0 74 40 48 c7 04 24 0e 36
RSP: 0018:ffffc90004c878c0 EFLAGS: 00000206
RAX: c8835d049b89d800 RBX: 0000000000000216 RCX: c8835d049b89d800
RDX: 0000000000000000 RSI: ffffffff8d7e8bf1 RDI: 0000000000000001
RBP: ffffc90004c87950 R08: ffffffff8f9e1e77 R09: 1ffffffff1f3c3ce
R10: dffffc0000000000 R11: fffffbfff1f3c3cf R12: dffffc0000000000
R13: dffffc0000000000 R14: ffffffff8e224b80 R15: 1ffff92000990f18
 cleanup_entry+0x296/0x310 net/ipv4/netfilter/ip_tables.c:654
 __do_replace+0x717/0x970 net/ipv4/netfilter/ip_tables.c:1082
 do_replace net/ipv4/netfilter/ip_tables.c:1141 [inline]
 do_ipt_set_ctl+0xa0d/0xcd0 net/ipv4/netfilter/ip_tables.c:1635
 nf_setsockopt+0x26f/0x290 net/netfilter/nf_sockopt.c:101
 do_sock_setsockopt+0x17c/0x1b0 net/socket.c:2360
 __sys_setsockopt net/socket.c:2385 [inline]
 __do_sys_setsockopt net/socket.c:2391 [inline]
 __se_sys_setsockopt net/socket.c:2388 [inline]
 __x64_sys_setsockopt+0x13f/0x1b0 net/socket.c:2388
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f482d190eba
Code: ff ff ff c3 0f 1f 40 00 48 c7 c2 a8 ff ff ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b7 0f 1f 00 49 89 ca b8 36 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 06 c3 0f 1f 44 00 00 48 c7 c2 a8 ff ff ff f7
RSP: 002b:00007ffca2b55328 EFLAGS: 00000202 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 00007ffca2b553b0 RCX: 00007f482d190eba
RDX: 0000000000000040 RSI: 0000000000000000 RDI: 0000000000000003
RBP: 0000000000000003 R08: 0000000000000240 R09: 00007ffca2b55767
R10: 00007f482d3b6300 R11: 0000000000000202 R12: 00007f482d3b62a0
R13: 00007ffca2b5534c R14: 0000000000000000 R15: 00007f482d3b7020
 </TASK>
task:syz.9.2508      state:R  running task     stack:25608 pid:13170 tgid:13169 ppid:8753   task_flags:0x400040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5325 [inline]
 __schedule+0x1798/0x4cc0 kernel/sched/core.c:6929
 preempt_schedule_irq+0xb5/0x150 kernel/sched/core.c:7256
 irqentry_exit+0x6f/0x90 kernel/entry/common.c:211
 asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:lock_acquire+0x175/0x360 kernel/locking/lockdep.c:5872
Code: 00 00 00 00 9c 8f 44 24 30 f7 44 24 30 00 02 00 00 0f 85 cd 00 00 00 f7 44 24 08 00 02 00 00 74 01 fb 65 48 8b 05 fb bc f3 10 <48> 3b 44 24 58 0f 85 f2 00 00 00 48 83 c4 60 5b 41 5c 41 5d 41 5e
RSP: 0018:ffffc90013897308 EFLAGS: 00000206
RAX: d33702868051b400 RBX: 0000000000000000 RCX: d33702868051b400
RDX: 0000000000000000 RSI: ffffffff8d9d1f00 RDI: ffffffff8bc07de0
RBP: ffffffff82121499 R08: 0000000000000000 R09: ffffffff82121499
R10: dffffc0000000000 R11: fffff52002712ece R12: 0000000000000002
R13: ffffffff8e13d2e0 R14: 0000000000000000 R15: 0000000000000246
 rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
 rcu_read_lock include/linux/rcupdate.h:867 [inline]
 ___pte_offset_map+0x45/0x250 mm/pgtable-generic.c:286
 __pte_offset_map include/linux/mm.h:3118 [inline]
 __pte_offset_map_lock+0x46/0x210 mm/pgtable-generic.c:397
 pte_offset_map_lock include/linux/mm.h:3133 [inline]
 zap_pte_range mm/memory.c:1840 [inline]
 zap_pmd_range mm/memory.c:1946 [inline]
 zap_pud_range mm/memory.c:1975 [inline]
 zap_p4d_range mm/memory.c:1996 [inline]
 unmap_page_range+0x3b97/0x4370 mm/memory.c:2017
 unmap_single_vma mm/memory.c:2060 [inline]
 unmap_vmas+0x399/0x580 mm/memory.c:2104
 vms_clear_ptes+0x35c/0x540 mm/vma.c:1228
 vms_complete_munmap_vmas+0x206/0x8a0 mm/vma.c:1277
 do_vmi_align_munmap+0x364/0x440 mm/vma.c:1536
 do_vmi_munmap+0x253/0x2e0 mm/vma.c:1584
 __vm_munmap+0x207/0x380 mm/vma.c:3156
 __do_sys_munmap mm/mmap.c:1080 [inline]
 __se_sys_munmap mm/mmap.c:1077 [inline]
 __x64_sys_munmap+0x60/0x70 mm/mmap.c:1077
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xfa/0xfa0 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7effac98f057
RSP: 002b:00007effad77fe18 EFLAGS: 00000246 ORIG_RAX: 000000000000000b
RAX: ffffffffffffffda RBX: 00000000013bd7ef RCX: 00007effac98f057
RDX: 0000000000000000 RSI: 0000000008400000 RDI: 00007effa2600000
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000005509
R10: 000020000000cf02 R11: 0000000000000246 R12: 0000000000000003
R13: 00007effad77fef0 R14: 00007effad77feb0 R15: 00007effa2600000
 </TASK>
task:syz.8.2515      state:R  running task     stack:26760 pid:13193 tgid:13193 ppid:11631  task_flags:0x400040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5325 [inline]
 __schedule+0x1798/0x4cc0 kernel/sched/core.c:6929
 preempt_schedule_common+0x83/0xd0 kernel/sched/core.c:7113
 preempt_schedule+0xae/0xc0 kernel/sched/core.c:7137
 preempt_schedule_thunk+0x16/0x30 arch/x86/entry/thunk.S:12
 __raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
 _raw_spin_unlock+0x3f/0x50 kernel/locking/spinlock.c:186
 spin_unlock include/linux/spinlock.h:391 [inline]
 filemap_map_pages+0x1621/0x1c60 mm/filemap.c:3858
 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 mm/memory.c:4361 [inline]
 handle_pte_fault mm/memory.c:6177 [inline]
 __handle_mm_fault+0x347e/0x5400 mm/memory.c:6318
 handle_mm_fault+0x40a/0x8e0 mm/memory.c:6487
 do_user_addr_fault+0xa7c/0x1380 arch/x86/mm/fault.c:1336
 handle_page_fault arch/x86/mm/fault.c:1476 [inline]
 exc_page_fault+0x82/0x100 arch/x86/mm/fault.c:1532
 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:618
RIP: 0033:0x7fda8766f1ed
RSP: 002b:00007ffe3feb7fb0 EFLAGS: 00010212
RAX: 000000110c374000 RBX: 00007fda88515720 RCX: 0000000000000002
RDX: 0000000000000a93 RSI: 0000000000003e2a RDI: 0000000000000004
RBP: ffffffff851f8a93 R08: 00007fda879e6038 R09: 00007fda879d2000
R10: 00007fda871ff008 R11: 0000000000000002 R12: 0000000000000002
R13: 0000000000000000 R14: ffffffff851f8deb R15: 000000000000002b
 </TASK>
rcu: rcu_preempt kthread starved for 10502 jiffies! g54037 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:26696 pid:16    tgid:16    ppid:2      task_flags:0x208040 flags:0x00080000
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5325 [inline]
 __schedule+0x1798/0x4cc0 kernel/sched/core.c:6929
 __schedule_loop kernel/sched/core.c:7011 [inline]
 schedule+0x165/0x360 kernel/sched/core.c:7026
 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+0x711/0x8a0 kernel/kthread.c:463
 ret_from_fork+0x4bc/0x870 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: 13192 Comm: syz.0.2516 Not tainted syzkaller #0 PREEMPT(full) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
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:342 [inline]
RIP: 0010:smp_call_function_many_cond+0xd31/0x12d0 kernel/smp.c:877
Code: 00 00 45 8b 2c 24 44 89 ee 83 e6 01 31 ff e8 96 73 0b 00 41 83 e5 01 49 bd 00 00 00 00 00 fc ff df 75 07 e8 41 6f 0b 00 eb 38 <f3> 90 42 0f b6 04 2b 84 c0 75 11 41 f7 04 24 01 00 00 00 74 1e e8
RSP: 0018:ffffc900123cf940 EFLAGS: 00000293
RAX: ffffffff81b4d4cb RBX: 1ffff110170e7ffd RCX: ffff888029988000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc900123cfac0 R08: ffffffff8f9e1e77 R09: 1ffffffff1f3c3ce
R10: dffffc0000000000 R11: fffffbfff1f3c3cf R12: ffff8880b873ffe8
R13: dffffc0000000000 R14: ffff8880b863b240 R15: 0000000000000001
FS:  00005555719f6500(0000) GS:ffff888125d0b000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3361eff8 CR3: 00000000670a3000 CR4: 0000000000350ef0
Call Trace:
 <TASK>
 on_each_cpu_cond_mask+0x3f/0x80 kernel/smp.c:1043
 on_each_cpu include/linux/smp.h:71 [inline]
 smp_text_poke_sync_each_cpu arch/x86/kernel/alternative.c:2713 [inline]
 smp_text_poke_batch_finish+0x5f9/0x1130 arch/x86/kernel/alternative.c:2923
 arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
 static_key_disable_cpuslocked+0xc5/0x1b0 kernel/jump_label.c:240
 static_key_disable+0x1a/0x20 kernel/jump_label.c:248
 tracepoint_remove_func kernel/tracepoint.c:370 [inline]
 tracepoint_probe_unregister+0x80e/0x9b0 kernel/tracepoint.c:504
 bpf_raw_tp_link_release+0x43/0x70 kernel/bpf/syscall.c:3738
 bpf_link_free+0xed/0x330 kernel/bpf/syscall.c:3249
 bpf_link_put_direct kernel/bpf/syscall.c:3292 [inline]
 bpf_link_release+0x6b/0x80 kernel/bpf/syscall.c:3299
 __fput+0x44c/0xa70 fs/file_table.c:468
 task_work_run+0x1d4/0x260 kernel/task_work.c:227
 resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
 exit_to_user_mode_loop+0xe9/0x130 kernel/entry/common.c:43
 exit_to_user_mode_prepare include/linux/irq-entry-common.h:225 [inline]
 syscall_exit_to_user_mode_work include/linux/entry-common.h:175 [inline]
 syscall_exit_to_user_mode include/linux/entry-common.h:210 [inline]
 do_syscall_64+0x2bd/0xfa0 arch/x86/entry/syscall_64.c:100
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb04d18efc9
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:00007ffee7d017e8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: 0000000000000000 RBX: 000000000005b18d RCX: 00007fb04d18efc9
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007fb04d3e7da0 R08: 0000000000000001 R09: 00000004e7d01adf
R10: 0000001b32420000 R11: 0000000000000246 R12: 00007fb04d3e5fac
R13: 00007fb04d3e5fa0 R14: ffffffffffffffff R15: 00007ffee7d01900
 </TASK>