rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (1 GPs behind) idle=e79/1/0x4000000000000002 softirq=36131/36132 fqs=5249 (detected by 1, t=10502 jiffies, g=55217, q=757) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 14144 Comm: syz.6.2577 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025 RIP: 0010:rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:331 [inline] RIP: 0010:rcu_is_watching+0xc/0xa0 kernel/rcu/tree.c:1123 Code: 5d c3 e8 37 36 3e 08 41 f7 c7 00 02 00 00 75 b8 eb b7 e8 17 36 3e 08 0f 1f 80 00 00 00 00 41 57 41 56 53 65 ff 05 8c be 9e 7e 0f 46 3e 08 89 c3 83 f8 08 73 5c 49 bf 00 00 00 00 00 fc ff df RSP: 0018:ffffc900000076a8 EFLAGS: 00000003 RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff812a5039 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8d6935a8 RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff1ad26b6 R10: fffffbfff1ad26b6 R11: 1ffffffff1ad26b5 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 0000000000000000 FS: 00007f4d5c1566c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b32463fff CR3: 0000000065d43000 CR4: 00000000003506f0 DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: trace_irq_work_entry arch/x86/include/asm/trace/irq_vectors.h:64 [inline] __sysvec_irq_work+0x88/0x240 arch/x86/kernel/irq_work.c:20 instr_sysvec_irq_work arch/x86/kernel/irq_work.c:17 [inline] sysvec_irq_work+0x4a/0xc0 arch/x86/kernel/irq_work.c:17 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713 RIP: 0010:rcu_read_unlock_special+0x84/0x480 kernel/rcu/tree_plugin.h:674 Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 ed 11 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b RSP: 0018:ffffc900000077a0 EFLAGS: 00000206 RAX: 2a8af960a5037800 RBX: 1ffff92000000ef8 RCX: 2a8af960a5037800 RDX: dffffc0000000000 RSI: ffffffff8a0b1be0 RDI: ffffffff8a59e800 RBP: ffffc90000007880 R08: dffffc0000000000 R09: ffffed1017207662 R10: ffffed1017207662 R11: 1ffff11017207661 R12: ffffffff8c120c00 R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422 rcu_read_unlock include/linux/rcupdate.h:772 [inline] netif_receive_skb_list_internal+0x93a/0xb90 net/core/dev.c:5760 gro_normal_list net/core/dev.c:5913 [inline] napi_complete_done+0x37d/0x830 net/core/dev.c:6651 virtqueue_napi_complete drivers/net/virtio_net.c:357 [inline] virtnet_poll+0x912/0xef0 drivers/net/virtio_net.c:1624 __napi_poll+0xc0/0x430 net/core/dev.c:7075 napi_poll net/core/dev.c:7142 [inline] net_rx_action+0x4a8/0x9c0 net/core/dev.c:7232 handle_softirqs+0x328/0x820 kernel/softirq.c:576 __do_softirq kernel/softirq.c:610 [inline] invoke_softirq kernel/softirq.c:450 [inline] __irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671 common_interrupt+0xb5/0xd0 arch/x86/kernel/irq.c:242 asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:667 RIP: 0010:preempt_schedule_irq+0xac/0x150 kernel/sched/core.c:6799 Code: 44 24 20 f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 70 bf 01 00 00 00 e8 af 44 a7 f7 e8 fa bd d3 f7 fb bf 01 00 00 00 ef b5 ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24 RSP: 0018:ffffc90003b377c0 EFLAGS: 00000282 RAX: 2a8af960a5037800 RBX: 0000000000000000 RCX: 2a8af960a5037800 RDX: dffffc0000000000 RSI: ffffffff8a0b1be0 RDI: 0000000000000001 RBP: ffffc90003b37860 R08: dffffc0000000000 R09: ffffed1017207662 R10: ffffed1017207662 R11: 1ffff11017207661 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000766ef8 irqentry_exit+0x63/0x70 kernel/entry/common.c:432 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:try_charge_memcg+0x21d/0x14a0 mm/memcontrol.c:2607 Code: 01 00 00 00 00 00 00 9c 8f 84 24 10 01 00 00 f6 84 24 11 01 00 00 02 0f 85 c9 02 00 00 41 f7 c4 00 02 00 00 74 01 fb 45 84 f6 <44> 8b 64 24 04 0f 85 c8 0f 00 00 e9 37 03 00 00 48 8b 7c 24 68 48 RSP: 0018:ffffc90003b37920 EFLAGS: 00000202 RAX: 2a8af960a5037800 RBX: ffff8880749a0000 RCX: 2a8af960a5037800 RDX: dffffc0000000000 RSI: ffffffff8a0b1be0 RDI: ffffffff8a59e800 RBP: ffffc90003b37b10 R08: dffffc0000000000 R09: ffffed1017207662 R10: ffffed1017207662 R11: 1ffff11017207661 R12: 0000000000000287 R13: 1ffff11017206c93 R14: ffff8880b9036401 R15: dffffc0000000000 obj_cgroup_charge_pages+0x87/0x190 mm/memcontrol.c:3018 obj_cgroup_charge+0x1a0/0x310 mm/memcontrol.c:3299 memcg_slab_pre_alloc_hook mm/slab.h:287 [inline] slab_pre_alloc_hook+0x9f/0xc0 mm/slab.h:497 slab_alloc_node mm/slub.c:3139 [inline] slab_alloc mm/slub.c:3233 [inline] kmem_cache_alloc+0x3d/0x290 mm/slub.c:3238 sk_prot_alloc+0x57/0x210 net/core/sock.c:1860 sk_alloc+0x2f/0x310 net/core/sock.c:1922 inet6_create+0x7ad/0x1150 net/ipv6/af_inet6.c:191 __sock_create+0x47b/0x900 net/socket.c:1496 sock_create net/socket.c:1552 [inline] __sys_socket+0xe2/0x170 net/socket.c:1594 __do_sys_socket net/socket.c:1603 [inline] __se_sys_socket net/socket.c:1601 [inline] __x64_sys_socket+0x76/0x80 net/socket.c:1601 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f4d5deef749 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:00007f4d5c156038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007f4d5e145fa0 RCX: 00007f4d5deef749 RDX: 000000000000003a RSI: 0000000000000003 RDI: 000000000000000a RBP: 00007f4d5df73f91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f4d5e146038 R14: 00007f4d5e145fa0 R15: 00007ffe66674018