rcu: INFO: rcu_preempt detected stalls on CPUs/tasks:
rcu: 0-....: (1 GPs behind) idle=496c/1/0x4000000000000000 softirq=59348/59349 fqs=5238
rcu: hardirqs softirqs csw/system
rcu: number: 8737403 0 0
rcu: cputime: 3904 48623 0 ==> 52510(ms)
rcu: (detected by 1, t=10502 jiffies, g=63209, q=2535 ncpus=2)
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 14337 Comm: syz.9.2060 Not tainted 6.6.102-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:perf_event_fasync kernel/events/core.c:6784 [inline]
RIP: 0010:__perf_event_overflow+0x447/0x630 kernel/events/core.c:9719
Code: bb 38 05 00 00 48 89 f8 48 c1 e8 03 42 80 3c 28 00 74 05 e8 eb 0c 30 00 48 8b 83 38 05 00 00 48 89 df 4c 89 fe 4c 89 e2 ff d0 <48> 8d bb f0 02 00 00 48 89 f8 48 c1 e8 03 42 80 3c 28 00 74 05 e8
RSP: 0018:ffffc90000007178 EFLAGS: 00000046
RAX: 88ccfc8e342f4800 RBX: ffff88805c7db0c0 RCX: 88ccfc8e342f4800
RDX: 0000000000000001 RSI: ffffffff8aaacb40 RDI: ffffffff8afc66c0
RBP: ffff88805c7db548 R08: ffffffff8e4a882f R09: 1ffffffff1c95105
R10: dffffc0000000000 R11: fffffbfff1c95106 R12: ffff8880b8e36aa8
R13: dffffc0000000000 R14: 0000000000000000 R15: ffffc90000007340
FS: 00007f2d375eb6c0(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f632df82698 CR3: 0000000068624000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
perf_swevent_overflow kernel/events/core.c:9793 [inline]
perf_swevent_event+0x2f5/0x5c0 kernel/events/core.c:-1
perf_tp_event+0x4f9/0x13a0 kernel/events/core.c:10343
perf_trace_run_bpf_submit+0xf4/0x1c0 kernel/events/core.c:10267
perf_trace_preemptirq_template+0x281/0x340 include/trace/events/preemptirq.h:14
trace_irq_enable+0xbf/0xe0 include/trace/events/preemptirq.h:40
trace_hardirqs_on+0x18/0x40 kernel/trace/trace_preemptirq.c:56
asm_sysvec_irq_work+0x1a/0x20 arch/x86/include/asm/idtentry.h:723
RIP: 0010:rcu_read_unlock_special+0x88/0x4c0 kernel/rcu/tree_plugin.h:682
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 39 58 93 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b
RSP: 0018:ffffc90000007740 EFLAGS: 00000206
RAX: 88ccfc8e342f4800 RBX: 1ffff92000000ef0 RCX: 88ccfc8e342f4800
RDX: dffffc0000000000 RSI: ffffffff8aaab9c0 RDI: ffffffff8afc66c0
RBP: ffffc90000007840 R08: ffffffff8e4a882f R09: 1ffffffff1c95105
R10: dffffc0000000000 R11: fffffbfff1c95106 R12: ffffffff8cd35400
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001
__rcu_read_unlock+0x7c/0xd0 kernel/rcu/tree_plugin.h:426
rcu_read_unlock include/linux/rcupdate.h:818 [inline]
netif_receive_skb_list_internal+0x9ed/0xc60 net/core/dev.c:5831
gro_normal_list include/net/gro.h:448 [inline]
napi_complete_done+0x32a/0x810 net/core/dev.c:6170
virtqueue_napi_complete drivers/net/virtio_net.c:450 [inline]
virtnet_poll+0xa44/0x1180 drivers/net/virtio_net.c:2231
__napi_poll+0xc0/0x460 net/core/dev.c:6600
napi_poll net/core/dev.c:6667 [inline]
net_rx_action+0x5ea/0xbf0 net/core/dev.c:6803
handle_softirqs+0x280/0x820 kernel/softirq.c:578
__do_softirq kernel/softirq.c:612 [inline]
invoke_softirq kernel/softirq.c:452 [inline]
__irq_exit_rcu+0xc7/0x190 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:preempt_schedule_irq+0xb0/0x140 kernel/sched/core.c:7009
Code: 44 24 20 f6 44 24 21 02 74 0b 0f 0b 48 f7 03 08 00 00 00 74 63 bf 01 00 00 00 e8 4b da e5 f6 e8 46 5f 16 f7 fb bf 01 00 00 00 db b5 ff ff 48 c7 44 24 40 00 00 00 00 9c 8f 44 24 40 8b 44 24
RSP: 0018:ffffc9000b3c7a20 EFLAGS: 00000282
RAX: 88ccfc8e342f4800 RBX: 0000000000000000 RCX: 88ccfc8e342f4800
RDX: dffffc0000000000 RSI: ffffffff8aaab9c0 RDI: 0000000000000001
RBP: ffffc9000b3c7ac0 R08: ffffffff8e4a882f R09: 1ffffffff1c95105
R10: dffffc0000000000 R11: fffffbfff1c95106 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92001678f44
irqentry_exit+0x67/0x70 kernel/entry/common.c:438
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:memcg_account_kmem+0x133/0x160 mm/memcontrol.c:-1
Code: 3b 44 24 60 75 1f 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 dd 7f 88 08 41 f7 c5 00 02 00 00 75 b2 eb b1 e8 cd 7e 88 08 0f 1e fa 48 81 c3 c0 02 00 00 45 85 f6 7e 0d 44 89 f6 48 89 df
RSP: 0018:ffffc9000b3c7b80 EFLAGS: 00000206
RAX: 88ccfc8e342f4800 RBX: ffff88807c052000 RCX: 88ccfc8e342f4800
RDX: dffffc0000000000 RSI: ffffffff8aaab9c0 RDI: ffffffff8afc66c0
RBP: ffffc9000b3c7c30 R08: ffffffff8e4a882f R09: 1ffffffff1c95105
R10: dffffc0000000000 R11: fffffbfff1c95106 R12: dffffc0000000000
R13: 0000000000000a02 R14: 0000000000000001 R15: 1ffff92001678f70
obj_cgroup_charge_pages mm/memcontrol.c:3113 [inline]
obj_cgroup_charge+0x36a/0x620 mm/memcontrol.c:3400
memcg_slab_pre_alloc_hook mm/slab.h:508 [inline]
slab_pre_alloc_hook+0x2eb/0x310 mm/slab.h:719
slab_alloc_node mm/slub.c:3467 [inline]
slab_alloc mm/slub.c:3493 [inline]
__kmem_cache_alloc_lru mm/slub.c:3500 [inline]
kmem_cache_alloc_lru+0x4d/0x2e0 mm/slub.c:3516
alloc_inode_sb include/linux/fs.h:2946 [inline]
sock_alloc_inode+0x28/0xc0 net/socket.c:308
alloc_inode fs/inode.c:261 [inline]
new_inode_pseudo+0x63/0x1d0 fs/inode.c:1049
sock_alloc net/socket.c:634 [inline]
__sock_create+0x12d/0x940 net/socket.c:1535
sock_create net/socket.c:1627 [inline]
__sys_socket_create net/socket.c:1664 [inline]
__sys_socket+0xd7/0x1a0 net/socket.c:1715
__do_sys_socket net/socket.c:1729 [inline]
__se_sys_socket net/socket.c:1727 [inline]
__x64_sys_socket+0x7a/0x90 net/socket.c:1727
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f2d3678ebe9
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:00007f2d375eb038 EFLAGS: 00000246 ORIG_RAX: 0000000000000029
RAX: ffffffffffffffda RBX: 00007f2d369b5fa0 RCX: 00007f2d3678ebe9
RDX: 0000000000000004 RSI: 0000000000000002 RDI: 0000000000000010
RBP: 00007f2d36811e19 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f2d369b6038 R14: 00007f2d369b5fa0 R15: 00007ffe460e9a18