rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (1 GPs behind) idle=c9fc/1/0x4000000000000000 softirq=20824/20825 fqs=5245
rcu: hardirqs softirqs csw/system
rcu: number: 1452442 0 0
rcu: cputime: 14099 38380 45 ==> 52500(ms)
rcu: (t=10502 jiffies g=21293 q=1077 ncpus=2)
CPU: 1 PID: 7842 Comm: syz.2.651 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:lock_acquire+0x208/0x420 kernel/locking/lockdep.c:5758
Code: f7 84 24 80 00 00 00 00 02 00 00 43 c6 44 3c 04 f8 0f 85 f0 00 00 00 41 f7 c6 00 02 00 00 74 01 fb 48 c7 44 24 60 0e 36 e0 45 <4b> c7 04 3c 00 00 00 00 43 c7 44 3c 08 00 00 00 00 65 48 8b 04 25
RSP: 0018:ffffc900001ef0a0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 31cae4da2ae77200
RDX: 0000000000000000 RSI: ffffffff8acadd60 RDI: ffffffff8b1d3260
RBP: ffffc900001ef1b0 R08: dffffc0000000000 R09: 1ffffffff223dea0
R10: dffffc0000000000 R11: fffffbfff223dea1 R12: 1ffff9200003de20
R13: ffffffff8d131da0 R14: 0000000000000246 R15: dffffc0000000000
FS: 00007f83c16246c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005617aafd2520 CR3: 00000000518b2000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
rcu_read_lock include/linux/rcupdate.h:786 [inline]
is_bpf_text_address+0x47/0x2a0 kernel/bpf/core.c:742
kernel_text_address+0xa0/0xd0 kernel/extable.c:125
__kernel_text_address+0xd/0x30 kernel/extable.c:79
unwind_get_return_address+0x5d/0xc0 arch/x86/kernel/unwind_orc.c:369
arch_stack_walk+0x11d/0x190 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0xaa/0x100 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:46 [inline]
kasan_set_track+0x4e/0x70 mm/kasan/common.c:53
__kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:329
kasan_slab_alloc include/linux/kasan.h:188 [inline]
slab_post_alloc_hook+0x6a/0x4d0 mm/slab.h:770
slab_alloc_node mm/slub.c:3495 [inline]
slab_alloc mm/slub.c:3503 [inline]
__kmem_cache_alloc_lru mm/slub.c:3510 [inline]
kmem_cache_alloc+0x17e/0x2c0 mm/slub.c:3519
skb_clone+0x1eb/0x370 net/core/skbuff.c:1912
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+0x162a/0x3640 net/core/dev.c:4434
dev_queue_xmit include/linux/netdevice.h:3157 [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+0x2a5/0x3a0 net/ipv4/ip_output.c:436
dst_output include/net/dst.h:467 [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_ack_snd_check net/ipv4/tcp_input.c:5768 [inline]
tcp_rcv_established+0xb22/0x1d70 net/ipv4/tcp_input.c:6214
tcp_v4_do_rcv+0x6d3/0xba0 net/ipv4/tcp_ipv4.c:1737
tcp_v4_rcv+0x2358/0x2a60 net/ipv4/tcp_ipv4.c:2169
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: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+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:5707 [inline]
__netif_receive_skb_list_core+0x582/0x770 net/core/dev.c:5755
__netif_receive_skb_list net/core/dev.c:5807 [inline]
netif_receive_skb_list_internal+0x943/0xca0 net/core/dev.c:5898
gro_normal_list include/net/gro.h:452 [inline]
napi_complete_done+0x329/0x820 net/core/dev.c:6238
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:6668
napi_poll net/core/dev.c:6735 [inline]
net_rx_action+0x65f/0xcc0 net/core/dev.c:6871
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:lock_is_held_type+0x13e/0x190 kernel/locking/lockdep.c:5830
Code: 75 40 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 75 46 41 f7 c5 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 <48> 3b 44 24 08 75 3c 89 e8 48 83 c4 10 5b 41 5c 41 5d 41 5e 41 5f
RSP: 0018:ffffc90019ae77f8 EFLAGS: 00000206
RAX: 31cae4da2ae77200 RBX: ffff88802c54bc00 RCX: 31cae4da2ae77200
RDX: 0000000000000000 RSI: ffffffff8acadd60 RDI: ffffffff8b1d3260
RBP: 0000000000000000 R08: ffffc90019ae79df R09: 0000000000000000
R10: ffffc90019ae79d0 R11: fffff5200335cf3c R12: 0000000000000001
R13: 0000000000000246 R14: ffffffff8d131e00 R15: 00000000ffffffff
lock_is_held include/linux/lockdep.h:288 [inline]
schedule_debug kernel/sched/core.c:5959 [inline]
__schedule+0x20d/0x4660 kernel/sched/core.c:6592
preempt_schedule_irq+0xbf/0x150 kernel/sched/core.c:7011
irqentry_exit+0x67/0x70 kernel/entry/common.c:438
asm_sysvec_reschedule_ipi+0x1a/0x20 arch/x86/include/asm/idtentry.h:692
RIP: 0010:task_work_run+0x19c/0x260 kernel/task_work.c:244
Code: 73 ff ff ff e8 45 89 2d 00 48 83 7c 24 40 00 0f 84 8e 00 00 00 4c 89 f7 e8 41 56 3f 09 4c 89 f7 e8 d9 58 3f 09 4c 8b 6c 24 40 <4c> 89 e8 48 c1 e8 03 42 80 3c 20 00 74 08 4c 89 ef e8 8e 06 86 00
RSP: 0018:ffffc90019ae7bc0 EFLAGS: 00000286
RAX: 0000000080000000 RBX: 1ffff9200335cf00 RCX: 0000000000000000
RDX: dffffc0000000000 RSI: ffffffff8acacbe0 RDI: 00000000ffffffff
RBP: ffffc90019ae7c78 R08: ffffffff8e8c866f R09: 1ffffffff1d190cd
R10: dffffc0000000000 R11: fffffbfff1d190ce R12: dffffc0000000000
R13: ffff88802c54d188 R14: ffff88802c54c608 R15: ffff88802c54c570
get_signal+0x11da/0x1390 kernel/signal.c:2687
arch_do_signal_or_restart+0xc2/0x7b0 arch/x86/kernel/signal.c:310
exit_to_user_mode_loop+0x70/0x110 kernel/entry/common.c:174
exit_to_user_mode_prepare+0xee/0x180 kernel/entry/common.c:210
__syscall_exit_to_user_mode_work kernel/entry/common.c:291 [inline]
syscall_exit_to_user_mode+0x1a/0x50 kernel/entry/common.c:302
do_syscall_64+0x61/0xb0 arch/x86/entry/common.c:82
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f83c079e0d9
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:00007f83c1624028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: 0000000000000006 RBX: 00007f83c0a25fa0 RCX: 00007f83c079e0d9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140
RBP: 00007f83c0835024 R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f83c0a26038 R14: 00007f83c0a25fa0 R15: 00007ffc3bae7ee8