rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: Tasks blocked on level-0 rcu_node (CPUs 0-1): P3589/1:b..l (detected by 1, t=10506 jiffies, g=344429, q=52 ncpus=2) task:syz-executor.2 state:R running task stack:19864 pid:3589 ppid:3573 flags:0x00004002 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x142d/0x4550 kernel/sched/core.c:6558 preempt_schedule_irq+0xf7/0x1c0 kernel/sched/core.c:6870 irqentry_exit+0x53/0x80 kernel/entry/common.c:433 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:lock_acquire+0x26f/0x5a0 kernel/locking/lockdep.c:5666 Code: 2b 00 74 08 4c 89 f7 e8 af 7c 77 00 f6 44 24 61 02 0f 85 84 01 00 00 41 f7 c7 00 02 00 00 74 01 fb 48 c7 44 24 40 0e 36 e0 45 <4b> c7 44 25 00 00 00 00 00 43 c7 44 25 09 00 00 00 00 43 c7 44 25 RSP: 0018:ffffc90003dfef80 EFLAGS: 00000206 RAX: 0000000000000001 RBX: 1ffff920007bfdfc RCX: 1ffff920007bfd9c RDX: dffffc0000000000 RSI: ffffffff8aebf7c0 RDI: ffffffff8b3cfa80 RBP: ffffc90003dff0d0 R08: dffffc0000000000 R09: fffffbfff2092245 R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff920007bfdf8 R13: dffffc0000000000 R14: ffffc90003dfefe0 R15: 0000000000000246 rcu_lock_acquire include/linux/rcupdate.h:306 [inline] rcu_read_lock include/linux/rcupdate.h:747 [inline] is_bpf_text_address+0x3e/0x2a0 kernel/bpf/core.c:731 kernel_text_address+0x9f/0xd0 kernel/extable.c:125 __kernel_text_address+0x9/0x40 kernel/extable.c:79 unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323 arch_stack_walk+0xf3/0x140 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4b/0x70 mm/kasan/common.c:52 ____kasan_kmalloc mm/kasan/common.c:374 [inline] __kasan_kmalloc+0x97/0xb0 mm/kasan/common.c:383 kmalloc_node include/linux/slab.h:575 [inline] kzalloc_node include/linux/slab.h:700 [inline] __get_vm_area_node+0x126/0x360 mm/vmalloc.c:2498 __vmalloc_node_range+0x394/0x1460 mm/vmalloc.c:3183 __vmalloc_node mm/vmalloc.c:3288 [inline] vzalloc+0x75/0x80 mm/vmalloc.c:3361 alloc_counters+0xd0/0x7b0 net/ipv4/netfilter/ip_tables.c:801 copy_entries_to_user net/ipv4/netfilter/ip_tables.c:823 [inline] get_entries net/ipv4/netfilter/ip_tables.c:1024 [inline] do_ipt_get_ctl+0xeb1/0x1890 net/ipv4/netfilter/ip_tables.c:1662 nf_getsockopt+0x28e/0x2b0 net/netfilter/nf_sockopt.c:116 ip_getsockopt+0x21a/0x2d0 net/ipv4/ip_sockglue.c:1824 tcp_getsockopt+0x15c/0x1c0 net/ipv4/tcp.c:4432 __sys_getsockopt+0x2b2/0x5d0 net/socket.c:2327 __do_sys_getsockopt net/socket.c:2342 [inline] __se_sys_getsockopt net/socket.c:2339 [inline] __x64_sys_getsockopt+0xb1/0xc0 net/socket.c:2339 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f4371e7e8ca RSP: 002b:00007ffe1d209308 EFLAGS: 00000216 ORIG_RAX: 0000000000000037 RAX: ffffffffffffffda RBX: 00007ffe1d209390 RCX: 00007f4371e7e8ca RDX: 0000000000000041 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 0000000000000003 R08: 00007ffe1d20932c R09: 0079746972756365 R10: 00007ffe1d209390 R11: 0000000000000216 R12: 00007f4371f7d800 R13: 00007ffe1d20932c R14: 0000000000000000 R15: 00007f4371f7dec0 rcu: rcu_preempt kthread timer wakeup didn't happen for 10505 jiffies! g344429 f0x0 RCU_GP_WAIT_FQS(5) ->state=0x402 rcu: Possible timer handling issue on cpu=0 timer-softirq=164449 rcu: rcu_preempt kthread starved for 10506 jiffies! g344429 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:26680 pid:16 ppid:2 flags:0x00004000 Call Trace: context_switch kernel/sched/core.c:5245 [inline] __schedule+0x142d/0x4550 kernel/sched/core.c:6558 schedule+0xbf/0x180 kernel/sched/core.c:6634 schedule_timeout+0x1b9/0x300 kernel/time/timer.c:1935 rcu_gp_fqs_loop+0x2d2/0x1120 kernel/rcu/tree.c:1674 rcu_gp_kthread+0xa3/0x3a0 kernel/rcu/tree.c:1873 kthread+0x28d/0x320 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 rcu: Stack dump where RCU GP kthread last ran: Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 32318 Comm: syz-executor.1 Not tainted 6.1.72-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:__lock_acquire+0xc9c/0x1f80 kernel/locking/lockdep.c:5019 Code: 00 00 48 c7 c0 60 91 c8 91 48 c1 e8 03 48 bf 00 00 00 00 00 fc ff df 0f b6 04 38 84 c0 0f 85 ea 0b 00 00 83 3d f4 39 5e 10 00 <75> 39 48 63 9c 24 80 00 00 00 48 89 d8 48 c1 e8 06 48 8d 3c c5 20 RSP: 0018:ffffc90000007a80 EFLAGS: 00000046 RAX: 0000000000000004 RBX: ffff88803b6b0ac4 RCX: ffffffff91c89103 RDX: 0000000000000000 RSI: 0000000000000000 RDI: dffffc0000000000 RBP: ffff88803b6b0b30 R08: dffffc0000000000 R09: fffffbfff2092246 R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88803b6b0ad8 R13: ffff88803b6b0000 R14: ffff88803b6b0b50 R15: 1ffff110076d616a FS: 0000000000000000(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1ad63ad988 CR3: 000000003850b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: lock_acquire+0x1f8/0x5a0 kernel/locking/lockdep.c:5662 __raw_spin_lock_irq include/linux/spinlock_api_smp.h:119 [inline] _raw_spin_lock_irq+0xcf/0x110 kernel/locking/spinlock.c:170 __run_hrtimer kernel/time/hrtimer.c:1689 [inline] __hrtimer_run_queues+0x6d3/0xe50 kernel/time/hrtimer.c:1749 hrtimer_interrupt+0x392/0x980 kernel/time/hrtimer.c:1811 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1095 [inline] __sysvec_apic_timer_interrupt+0x156/0x580 arch/x86/kernel/apic/apic.c:1112 sysvec_apic_timer_interrupt+0x8c/0xb0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:653 RIP: 0010:lockdep_enabled kernel/locking/lockdep.c:119 [inline] RIP: 0010:lock_acquire+0x12e/0x5a0 kernel/locking/lockdep.c:5638 Code: c0 a4 82 73 8e 48 c1 e8 03 42 0f b6 04 28 84 c0 0f 85 dd 02 00 00 83 3d 93 3d 09 0d 00 0f 84 3f 01 00 00 65 8b 05 a2 33 98 7e <85> c0 0f 85 88 01 00 00 65 48 8b 1d 12 2a 98 7e 48 81 c3 dc 0a 00 RSP: 0018:ffffc90005667260 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff816a44db RDX: 0000000000000000 RSI: ffffffff8b3cfa60 RDI: ffffffff8b3cfa20 RBP: ffffc900056673b0 R08: dffffc0000000000 R09: fffffbfff1ce69be R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff92000acce54 R13: dffffc0000000000 R14: 0000000000000000 R15: 00007fac3fe7cd29 rcu_lock_acquire include/linux/rcupdate.h:306 [inline] rcu_read_lock include/linux/rcupdate.h:747 [inline] is_bpf_text_address+0x3e/0x2a0 kernel/bpf/core.c:731 kernel_text_address+0x9f/0xd0 kernel/extable.c:125 __kernel_text_address+0x9/0x40 kernel/extable.c:79 unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323 arch_stack_walk+0xf3/0x140 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 save_stack+0xf6/0x1e0 mm/page_owner.c:127 __reset_page_owner+0x52/0x1a0 mm/page_owner.c:148 reset_page_owner include/linux/page_owner.h:24 [inline] free_pages_prepare mm/page_alloc.c:1440 [inline] free_pcp_prepare mm/page_alloc.c:1490 [inline] free_unref_page_prepare+0xf63/0x1120 mm/page_alloc.c:3358 free_unref_page_list+0x663/0x900 mm/page_alloc.c:3499 release_pages+0x2836/0x2b40 mm/swap.c:1055 tlb_batch_pages_flush mm/mmu_gather.c:59 [inline] tlb_flush_mmu_free mm/mmu_gather.c:254 [inline] tlb_flush_mmu+0xfc/0x210 mm/mmu_gather.c:261 tlb_finish_mmu+0xce/0x1f0 mm/mmu_gather.c:361 exit_mmap+0x3c3/0x9f0 mm/mmap.c:3239 __mmput+0x115/0x3c0 kernel/fork.c:1199 exit_mm+0x226/0x300 kernel/exit.c:563 do_exit+0x9f6/0x26a0 kernel/exit.c:856 do_group_exit+0x202/0x2b0 kernel/exit.c:1019 __do_sys_exit_group kernel/exit.c:1030 [inline] __se_sys_exit_group kernel/exit.c:1028 [inline] __x64_sys_exit_group+0x3b/0x40 kernel/exit.c:1028 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fac3fe7cd29 Code: Unable to access opcode bytes at 0x7fac3fe7ccff. RSP: 002b:00007ffc4cdaa008 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007fac3fe7cd29 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000001 R08: 0000000000000078 R09: 0000000000000000 R10: 0000001b31a20000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000001