rcu: INFO: rcu_preempt self-detected stall on CPU rcu: 1-....: (1735 ticks this GP) idle=3f44/1/0x4000000000000000 softirq=62147/62149 fqs=4936 rcu: hardirqs softirqs csw/system rcu: number: 472117 14 0 rcu: cputime: 5953 11376 12 ==> 17330(ms) rcu: (t=10500 jiffies g=86781 q=2412 ncpus=2) CPU: 1 PID: 18432 Comm: syz.3.4178 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026 RIP: 0010:__kasan_check_write+0xf/0x20 mm/kasan/shadow.c:37 Code: f6 48 8b 0c 24 31 d2 e9 ff ea ff ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 f3 0f 1e fa 89 f6 48 8b 0c 24 ba 01 00 00 00 dc ea ff ff 66 2e 0f 1f 84 00 00 00 00 00 66 90 f3 0f 1e fa 55 RSP: 0018:ffffc900001ef1d8 EFLAGS: 00000257 RAX: 0000000000000001 RBX: dffffc0000000000 RCX: ffffffff81e9619e RDX: 0000000000000001 RSI: 0000000000000008 RDI: ffff88801b221850 RBP: 000000000000000a R08: ffff88801b221857 R09: 1ffff1100364430a R10: dffffc0000000000 R11: ffffed100364430b R12: ffff888024a5e2b8 R13: 000000000000000b R14: ffff88801b221878 R15: ffff88801b221850 FS: 00007f129dacf6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000100000000 CR3: 000000002ffc8000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300 DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: instrument_write include/linux/instrumented.h:40 [inline] ___set_bit include/asm-generic/bitops/instrumented-non-atomic.h:28 [inline] __set_page_owner_handle+0x24e/0x3c0 mm/page_owner.c:180 __set_page_owner+0x45/0x60 mm/page_owner.c:197 set_page_owner include/linux/page_owner.h:31 [inline] post_alloc_hook+0x1c1/0x200 mm/page_alloc.c:1582 prep_new_page mm/page_alloc.c:1589 [inline] get_page_from_freelist+0x2181/0x22a0 mm/page_alloc.c:3221 __alloc_pages+0x1f0/0x460 mm/page_alloc.c:4501 alloc_slab_page+0x5d/0x180 mm/slub.c:1881 allocate_slab mm/slub.c:2028 [inline] new_slab+0x87/0x2d0 mm/slub.c:2081 ___slab_alloc+0xc5c/0x12f0 mm/slub.c:3253 __slab_alloc mm/slub.c:3339 [inline] __slab_alloc_node mm/slub.c:3392 [inline] slab_alloc_node mm/slub.c:3485 [inline] slab_alloc mm/slub.c:3503 [inline] __kmem_cache_alloc_lru mm/slub.c:3510 [inline] kmem_cache_alloc+0x109/0x2c0 mm/slub.c:3519 skb_clone+0x1eb/0x370 net/core/skbuff.c:1915 dev_queue_xmit_nit+0x23f/0xba0 net/core/dev.c:2358 xmit_one net/core/dev.c:3645 [inline] dev_hard_start_xmit+0x150/0x790 net/core/dev.c:3665 sch_direct_xmit+0x251/0x4a0 net/sched/sch_generic.c:345 __dev_xmit_skb net/core/dev.c:3886 [inline] __dev_queue_xmit+0x18b8/0x37e0 net/core/dev.c:4440 dev_queue_xmit include/linux/netdevice.h:3167 [inline] neigh_hh_output include/net/neighbour.h:531 [inline] neigh_output include/net/neighbour.h:545 [inline] ip_finish_output2+0xd4f/0x1260 net/ipv4/ip_output.c:235 NF_HOOK_COND include/linux/netfilter.h:293 [inline] ip_output+0x29f/0x440 net/ipv4/ip_output.c:436 dst_output include/net/dst.h:470 [inline] ip_local_out net/ipv4/ip_output.c:129 [inline] __ip_queue_xmit+0x1056/0x1960 net/ipv4/ip_output.c:540 __tcp_transmit_skb+0x1dd6/0x3470 net/ipv4/tcp_output.c:1427 tcp_rcv_established+0x132c/0x1d70 net/ipv4/tcp_input.c:6174 tcp_v4_do_rcv+0x6d3/0xba0 net/ipv4/tcp_ipv4.c:1744 tcp_v4_rcv+0x2358/0x2a60 net/ipv4/tcp_ipv4.c:2176 ip_protocol_deliver_rcu+0x20a/0x3f0 net/ipv4/ip_input.c:205 ip_local_deliver_finish+0x2c3/0x510 net/ipv4/ip_input.c:233 NF_HOOK+0x32d/0x3b0 include/linux/netfilter.h:304 dst_input include/net/dst.h:480 [inline] ip_sublist_rcv_finish net/ipv4/ip_input.c:580 [inline] ip_list_rcv_finish net/ipv4/ip_input.c:631 [inline] ip_sublist_rcv+0xa36/0xd60 net/ipv4/ip_input.c:639 ip_list_rcv+0x3ed/0x440 net/ipv4/ip_input.c:674 __netif_receive_skb_list_ptype net/core/dev.c:5713 [inline] __netif_receive_skb_list_core+0x582/0x770 net/core/dev.c:5761 __netif_receive_skb_list net/core/dev.c:5813 [inline] netif_receive_skb_list_internal+0x943/0xca0 net/core/dev.c:5904 gro_normal_list include/net/gro.h:452 [inline] napi_complete_done+0x329/0x820 net/core/dev.c:6244 virtqueue_napi_complete drivers/net/virtio_net.c:451 [inline] virtnet_poll+0xb6e/0x1300 drivers/net/virtio_net.c:2243 __napi_poll+0xbb/0x460 net/core/dev.c:6674 napi_poll net/core/dev.c:6741 [inline] net_rx_action+0x65f/0xcc0 net/core/dev.c:6877 handle_softirqs+0x27d/0x820 kernel/softirq.c:578 __do_softirq kernel/softirq.c:612 [inline] invoke_softirq kernel/softirq.c:452 [inline] __irq_exit_rcu+0xd3/0x190 kernel/softirq.c:661 irq_exit_rcu+0x9/0x20 kernel/softirq.c:673 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1088 [inline] sysvec_apic_timer_interrupt+0xa4/0xc0 arch/x86/kernel/apic/apic.c:1088 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687 RIP: 0010:finish_task_switch+0x267/0x8f0 kernel/sched/core.c:5256 Code: 33 09 85 c0 0f 84 30 01 00 00 48 85 db 0f 85 4f 01 00 00 0f 1f 44 00 00 4c 89 e7 e8 53 28 3d 09 e8 0e 23 30 00 fb 4c 8b 65 b8 <49> 8d bc 24 00 16 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 RSP: 0018:ffffc9000bd77800 EFLAGS: 00000286 RAX: 5f26f7ca566d7400 RBX: 0000000000000000 RCX: 5f26f7ca566d7400 RDX: dffffc0000000000 RSI: ffffffff8acacce0 RDI: ffffffff8b1d3ba0 RBP: ffffc9000bd77850 R08: ffffffff8e8c316f R09: 1ffffffff1d1862d R10: dffffc0000000000 R11: fffffbfff1d1862e R12: ffff888024a5da00 R13: 1ffff110171e79a1 R14: dffffc0000000000 R15: ffff8880b8f3cd08 context_switch kernel/sched/core.c:5385 [inline] __schedule+0x15b6/0x4660 kernel/sched/core.c:6701 preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6868 preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6892 preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45 class_preempt_destructor include/linux/preempt.h:478 [inline] try_to_wake_up+0x6f5/0x10e0 kernel/sched/core.c:4356 wake_up_process kernel/sched/core.c:4481 [inline] wake_up_q+0xb6/0x100 kernel/sched/core.c:1032 futex_wake+0x42a/0x4f0 kernel/futex/waitwake.c:184 do_futex+0x35d/0x3e0 kernel/futex/syscalls.c:139 __do_sys_futex kernel/futex/syscalls.c:211 [inline] __se_sys_futex+0x3a9/0x440 kernel/futex/syscalls.c:192 do_syscall_x64 arch/x86/entry/common.c:46 [inline] do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f129cb9e159 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f129dacf0e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: ffffffffffffffda RBX: 00007f129ce25fa8 RCX: 00007f129cb9e159 RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f129ce25fac RBP: 00007f129ce25fa0 R08: 0000000000745a2b R09: 0000000000000000 R10: 0000000000000007 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f129ce26038 R14: 00007ffccf0f4b80 R15: 00007ffccf0f4c68