rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 0-....: (1 GPs behind) idle=4f44/1/0x4000000000000000 softirq=23425/23426 fqs=416
rcu: hardirqs softirqs csw/system
rcu: number: 980638 0 0
rcu: cputime: 9294 24426 30 ==> 33750(ms)
rcu: (t=10503 jiffies g=28357 q=2137 ncpus=2)
CPU: 0 PID: 8791 Comm: syz.3.919 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__kasan_check_read+0xa/0x20 mm/kasan/shadow.c:31
Code: 48 c7 c7 29 bb a5 8c 4c 89 e6 eb 0a 48 c7 c7 0b 4c 87 8c 48 89 de e8 e5 0f a7 08 31 ed eb d4 cc f3 0f 1e fa 89 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
RSP: 0018:ffffc90000006318 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff816899c7
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8f6c5ae8
RBP: ffffc90000006430 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000004 R11: 0000000000000100 R12: 1ffff92000000c70
R13: ffffffff8df320e0 R14: 0000000000000000 R15: dffffc0000000000
FS: 00007fe41311d6c0(0000) GS:ffff8880b8c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f9f4adeb8c0 CR3: 00000000420c0000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
instrument_atomic_read include/linux/instrumented.h:68 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
cpumask_test_cpu include/linux/cpumask.h:504 [inline]
cpu_online include/linux/cpumask.h:1082 [inline]
trace_lock_acquire include/trace/events/lock.h:24 [inline]
lock_acquire+0xb7/0x420 kernel/locking/lockdep.c:5761
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_kmalloc mm/kasan/common.c:375 [inline]
__kasan_kmalloc+0x8f/0xa0 mm/kasan/common.c:384
kmalloc include/linux/slab.h:600 [inline]
kzalloc include/linux/slab.h:721 [inline]
ref_tracker_alloc+0x163/0x4b0 lib/ref_tracker.c:203
__netdev_tracker_alloc include/linux/netdevice.h:4162 [inline]
netdev_hold include/linux/netdevice.h:4191 [inline]
dst_init+0xc0/0x470 net/core/dst.c:52
dst_alloc+0x12e/0x170 net/core/dst.c:94
rt_dst_alloc net/ipv4/route.c:1689 [inline]
__mkroute_output net/ipv4/route.c:2653 [inline]
ip_route_output_key_hash_rcu+0x14a2/0x2350 net/ipv4/route.c:2875
ip_route_output_key_hash+0x1f3/0x330 net/ipv4/route.c:2704
__ip_route_output_key include/net/route.h:134 [inline]
ip_route_output_flow+0x2a/0x150 net/ipv4/route.c:2932
ip_route_output_ports include/net/route.h:171 [inline]
__ip_queue_xmit+0x92e/0x1960 net/ipv4/ip_output.c:496
__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+0xb30/0x1dd0 net/ipv4/tcp_input.c:6215
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+0x2d9/0x770 net/core/dev.c:5751
__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]
gro_normal_one include/net/gro.h:465 [inline]
napi_skb_finish net/core/gro.c:614 [inline]
napi_gro_receive+0x553/0xaf0 net/core/gro.c:644
receive_buf+0x2109/0x3610 drivers/net/virtio_net.c:1874
virtnet_receive drivers/net/virtio_net.c:2159 [inline]
virtnet_poll+0x69e/0x1300 drivers/net/virtio_net.c:2236
__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: 35 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 e3 e9 3e 09 e8 2e 28 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:ffffc900034c7940 EFLAGS: 00000286
RAX: 218edcdc1c597100 RBX: 0000000000000000 RCX: 218edcdc1c597100
RDX: dffffc0000000000 RSI: ffffffff8acacfe0 RDI: ffffffff8b1d5160
RBP: ffffc900034c7990 R08: ffffffff91ff15ff R09: 1ffffffff23fe2bf
R10: dffffc0000000000 R11: fffffbfff23fe2c0 R12: ffff888035535a00
R13: 1ffff110171879a1 R14: dffffc0000000000 R15: ffff8880b8c3cd08
context_switch kernel/sched/core.c:5385 [inline]
__schedule+0x15b6/0x4660 kernel/sched/core.c:6701
preempt_schedule_irq+0xbf/0x150 kernel/sched/core.c:7011
irqentry_exit+0x67/0x70 kernel/entry/common.c:441
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:687
RIP: 0010:perf_unpin_context+0x0/0x70 kernel/events/core.c:1469
Code: 3b 31 00 e9 e3 fe ff ff e8 0d 5a d8 ff eb 05 e8 06 5a d8 ff 48 83 c4 20 5b 41 5c 41 5d 41 5e 41 5f 5d c3 0f 1f 80 00 00 00 00 <41> 56 53 48 89 fb e8 e5 59 d8 ff 48 89 df e8 cd 8a ed 08 48 8d 8b
RSP: 0018:ffffc900034c7d38 EFLAGS: 00000246
RAX: 218edcdc1c597100 RBX: ffff88805e024800 RCX: 0000000000080000
RDX: ffffc9000d09b000 RSI: 000000000000ec7e RDI: ffff88805e024800
RBP: ffffc900034c7f10 R08: ffffffff91ff15ff R09: 1ffffffff23fe2bf
R10: dffffc0000000000 R11: fffffbfff23fe2c0 R12: 0000000000000000
R13: 1ffff92000698fb8 R14: 1ffff1100bd2965e R15: ffff888035535a00
__do_sys_perf_event_open kernel/events/core.c:12968 [inline]
__se_sys_perf_event_open+0x1820/0x1d40 kernel/events/core.c:12609
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: 0033:0x7fe41219e1d9
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:00007fe41311d028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007fe412425fa0 RCX: 00007fe41219e1d9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000480
RBP: 00007fe412235888 R08: 0000000000000000 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007fe412426038 R14: 00007fe412425fa0 R15: 00007ffc41dcb7d8