rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (7470 ticks this GP) idle=1dec/1/0x4000000000000000 softirq=16078/16089 fqs=5235
rcu: hardirqs softirqs csw/system
rcu: number: 1495757 37 0
rcu: cputime: 16729 35770 34 ==> 52520(ms)
rcu: (t=10503 jiffies g=16145 q=2406 ncpus=2)
CPU: 1 PID: 7259 Comm: syz.3.428 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:memset_orig+0x4e/0xac arch/x86/lib/memset_64.S:74
Code: d1 48 c1 e9 06 74 35 0f 1f 44 00 00 48 ff c9 48 89 07 48 89 47 08 48 89 47 10 48 89 47 18 48 89 47 20 48 89 47 28 48 89 47 30 <48> 89 47 38 48 8d 7f 40 75 d8 0f 1f 84 00 00 00 00 00 89 d1 83 e1
RSP: 0018:ffffc900001ef178 EFLAGS: 00000206
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000006
RDX: 0000000000000200 RSI: 0000000000000000 RDI: ffffc900001ef1c0
RBP: ffffc900001ef3a8 R08: dffffc0000000000 R09: 0000000000000000
R10: ffffc900001ef180 R11: fffffbfff21b50b9 R12: 0000000000000000
R13: ffffc900001ef458 R14: ffff888053bec608 R15: ffffc900001ef180
FS: 00007f4618c846c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555559d585c8 CR3: 000000003094c000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
kasan_save_stack mm/kasan/common.c:42 [inline]
kasan_set_track+0x3f/0x70 mm/kasan/common.c:52
kasan_save_free_info+0x2e/0x50 mm/kasan/generic.c:522
____kasan_slab_free+0x126/0x1e0 mm/kasan/common.c:236
kasan_slab_free include/linux/kasan.h:164 [inline]
slab_free_hook mm/slub.c:1811 [inline]
slab_free_freelist_hook+0x130/0x1b0 mm/slub.c:1837
slab_free mm/slub.c:3830 [inline]
kmem_cache_free+0xf8/0x280 mm/slub.c:3852
skb_kfree_head net/core/skbuff.c:943 [inline]
skb_free_head net/core/skbuff.c:957 [inline]
skb_release_data+0x60a/0x800 net/core/skbuff.c:987
skb_release_all net/core/skbuff.c:1053 [inline]
__kfree_skb net/core/skbuff.c:1067 [inline]
kfree_skb_reason+0x10e/0x170 net/core/skbuff.c:1103
dev_kfree_skb_any_reason+0x10c/0x120 net/core/dev.c:3228
free_old_xmit_skbs+0x114/0x3c0 drivers/net/virtio_net.c:791
start_xmit+0x161/0x1420 drivers/net/virtio_net.c:2415
__netdev_start_xmit include/linux/netdevice.h:4943 [inline]
netdev_start_xmit include/linux/netdevice.h:4957 [inline]
xmit_one net/core/dev.c:3619 [inline]
dev_hard_start_xmit+0x246/0x740 net/core/dev.c:3635
sch_direct_xmit+0x252/0x4a0 net/sched/sch_generic.c:342
__dev_xmit_skb net/core/dev.c:3856 [inline]
__dev_queue_xmit+0x173e/0x35a0 net/core/dev.c:4391
dev_queue_xmit include/linux/netdevice.h:3113 [inline]
neigh_hh_output include/net/neighbour.h:527 [inline]
neigh_output include/net/neighbour.h:541 [inline]
ip_finish_output2+0xcd3/0x11d0 net/ipv4/ip_output.c:235
dst_output include/net/dst.h:467 [inline]
ip_local_out net/ipv4/ip_output.c:129 [inline]
__ip_queue_xmit+0x10aa/0x1a10 net/ipv4/ip_output.c:535
__tcp_transmit_skb+0x1c97/0x32a0 net/ipv4/tcp_output.c:1422
tcp_ack_snd_check net/ipv4/tcp_input.c:5728 [inline]
tcp_rcv_established+0xb00/0x1cf0 net/ipv4/tcp_input.c:6174
tcp_v4_do_rcv+0x4ed/0xb80 net/ipv4/tcp_ipv4.c:1734
tcp_v4_rcv+0x2334/0x2a50 net/ipv4/tcp_ipv4.c:2166
ip_protocol_deliver_rcu+0x20e/0x3f0 net/ipv4/ip_input.c:205
ip_local_deliver_finish+0x2ca/0x510 net/ipv4/ip_input.c:233
NF_HOOK+0x303/0x390 include/linux/netfilter.h:304
dst_input include/net/dst.h:477 [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+0xa38/0xd20 net/ipv4/ip_input.c:639
ip_list_rcv+0x3e3/0x430 net/ipv4/ip_input.c:674
__netif_receive_skb_list_ptype net/core/dev.c:5651 [inline]
__netif_receive_skb_list_core+0x578/0x740 net/core/dev.c:5699
__netif_receive_skb_list net/core/dev.c:5751 [inline]
netif_receive_skb_list_internal+0x91b/0xc60 net/core/dev.c:5842
gro_normal_list include/net/gro.h:448 [inline]
napi_complete_done+0x32a/0x810 net/core/dev.c:6182
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:6612
napi_poll net/core/dev.c:6679 [inline]
net_rx_action+0x5ea/0xbf0 net/core/dev.c:6815
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 9b 58 e4 f6 e8 06 de 14 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:ffffc900032a7880 EFLAGS: 00000282
RAX: 7b6d0bfb2d71ba00 RBX: 0000000000000000 RCX: 7b6d0bfb2d71ba00
RDX: dffffc0000000000 RSI: ffffffff8aaabce0 RDI: 0000000000000001
RBP: ffffc900032a7920 R08: ffffffff90da8607 R09: 1ffffffff21b50c0
R10: dffffc0000000000 R11: fffffbfff21b50c1 R12: 0000000000000000
R13: 0000000000000000 R14: dffffc0000000000 R15: 1ffff92000654f10
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:constant_test_bit arch/x86/include/asm/bitops.h:207 [inline]
RIP: 0010:arch_test_bit arch/x86/include/asm/bitops.h:239 [inline]
RIP: 0010:tif_need_resched include/linux/thread_info.h:184 [inline]
RIP: 0010:need_resched include/linux/sched.h:2260 [inline]
RIP: 0010:preempt_schedule_common+0x11/0xc0 kernel/sched/core.c:6874
Code: 15 00 00 00 eb d0 e8 9e ba f7 ff 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 41 57 41 56 53 49 bf 00 00 00 00 00 fc ff df eb 0d <48> f7 03 08 00 00 00 0f 84 99 00 00 00 65 ff 05 83 a5 8c 75 65 8b
RSP: 0018:ffffc900032a79e0 EFLAGS: 00000246
RAX: 1ffff1100fbecb40 RBX: ffff88807df65a00 RCX: ffffffff815c504a
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff88807bba8000
RBP: ffffc900032a7a78 R08: ffff88807bba8003 R09: 1ffff1100f775000
R10: dffffc0000000000 R11: ffffed100f775001 R12: 0000000000000000
R13: dffffc0000000000 R14: ffff88807df66ec8 R15: dffffc0000000000
preempt_schedule+0xab/0xc0 kernel/sched/core.c:6890
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
smp_call_function_single+0x469/0x580 kernel/smp.c:652
task_function_call kernel/events/core.c:120 [inline]
perf_install_in_context+0x591/0x8e0 kernel/events/core.c:2948
__do_sys_perf_event_open kernel/events/core.c:12915 [inline]
__se_sys_perf_event_open+0x17fa/0x1c20 kernel/events/core.c:12567
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: 0033:0x7f4617d8f6c9
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:00007f4618c84038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f4617fe5fa0 RCX: 00007f4617d8f6c9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140
RBP: 00007f4617e11f91 R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f4617fe6038 R14: 00007f4617fe5fa0 R15: 00007ffd21d4ea68