rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (10500 ticks this GP) idle=7364/1/0x4000000000000000 softirq=10401/10403 fqs=4772
rcu: hardirqs softirqs csw/system
rcu: number: 1352803 0 0
rcu: cputime: 12730 39759 49 ==> 52510(ms)
rcu: (t=10503 jiffies g=7913 q=2275 ncpus=2)
CPU: 1 PID: 5932 Comm: syz.0.23 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
RIP: 0010:lock_acquire+0x1f2/0x410 kernel/locking/lockdep.c:5758
Code: 00 9c 8f 84 24 80 00 00 00 f6 84 24 81 00 00 00 02 0f 85 f5 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 66 43 c7 44 3c 09 00 00 43 c6 44 3c 0b 00
RSP: 0018:ffffc900001ef5c0 EFLAGS: 00000206
RAX: 0000000000000001 RBX: 0000000000000000 RCX: 57cd3b5ef27eca00
RDX: 0000000000000000 RSI: ffffffff8aaace60 RDI: ffffffff8afc6f80
RBP: ffffc900001ef6d0 R08: dffffc0000000000 R09: 1ffffffff21b52a0
R10: dffffc0000000000 R11: fffffbfff21b52a1 R12: 1ffff9200003dec4
R13: ffffffff8cd2ff20 R14: 0000000000000246 R15: dffffc0000000000
FS: 00007f01a6a3b6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fd0bcbe5f90 CR3: 000000001eb8e000 CR4: 00000000003506e0
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:741
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+0x9c/0xe0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:45 [inline]
kasan_set_track+0x4e/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:947 [inline]
skb_free_head net/core/skbuff.c:961 [inline]
skb_release_data+0x60a/0x800 net/core/skbuff.c:991
skb_release_all net/core/skbuff.c:1057 [inline]
__kfree_skb net/core/skbuff.c:1071 [inline]
kfree_skb_reason+0x10e/0x170 net/core/skbuff.c:1107
dev_kfree_skb_any_reason+0x10c/0x120 net/core/dev.c:3228
free_old_xmit_skbs+0x114/0x3c0 drivers/net/virtio_net.c:780
start_xmit+0x161/0x1420 drivers/net/virtio_net.c:2420
__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:345
__dev_xmit_skb net/core/dev.c:3856 [inline]
__dev_queue_xmit+0x173e/0x35a0 net/core/dev.c:4391
NF_HOOK+0x307/0x390 include/linux/netfilter.h:-1
arp_xmit+0x16c/0x270 net/ipv4/arp.c:663
arp_process+0x1394/0x1780 net/ipv4/arp.c:853
NF_HOOK+0x307/0x390 include/linux/netfilter.h:-1
__netif_receive_skb_list_ptype net/core/dev.c:5656 [inline]
__netif_receive_skb_list_core+0x6df/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:451 [inline]
gro_normal_one include/net/gro.h:464 [inline]
napi_skb_finish net/core/gro.c:573 [inline]
napi_gro_receive+0x565/0xb00 net/core/gro.c:603
receive_buf+0x218c/0x3780 drivers/net/virtio_net.c:1870
virtnet_receive drivers/net/virtio_net.c:2155 [inline]
virtnet_poll+0x61f/0x1180 drivers/net/virtio_net.c:2229
__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:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:152 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0xa9/0x110 kernel/locking/spinlock.c:194
Code: 74 05 e8 ca 2b 13 f7 48 c7 44 24 20 00 00 00 00 9c 8f 44 24 20 f6 44 24 21 02 75 4b f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 a2 a6 e2 f6 65 8b 05 93 ed 8a 75 85 c0 74 3c 48 c7 04 24 0e 36
RSP: 0018:ffffc90004f7f0c0 EFLAGS: 00000206
RAX: 57cd3b5ef27eca00 RBX: 0000000000000a06 RCX: 57cd3b5ef27eca00
RDX: dffffc0000000000 RSI: ffffffff8aaabce0 RDI: 0000000000000001
RBP: ffffc90004f7f140 R08: ffffffff90da95ff R09: 1ffffffff21b52bf
R10: dffffc0000000000 R11: fffffbfff21b52c0 R12: dffffc0000000000
R13: dffffc0000000000 R14: ffff88801be4c600 R15: 1ffff920009efe18
class_raw_spinlock_irqsave_destructor include/linux/spinlock.h:522 [inline]
try_to_wake_up+0x6f4/0x1140 kernel/sched/core.c:4232
wake_up_process kernel/sched/core.c:4480 [inline]
wake_up_q+0xb6/0x100 kernel/sched/core.c:1031
__mutex_unlock_slowpath+0x40a/0x6a0 kernel/locking/mutex.c:951
synchronize_rcu_expedited+0x6a2/0x830 kernel/rcu/tree_exp.h:1024
synchronize_rcu+0x136/0x380 kernel/rcu/tree.c:3627
bpf_dispatcher_update kernel/bpf/dispatcher.c:131 [inline]
bpf_dispatcher_change_prog+0xb55/0xcc0 kernel/bpf/dispatcher.c:170
dev_xdp_install+0x1e6/0x230 net/core/dev.c:9266
dev_xdp_attach+0xbc7/0x1030 net/core/dev.c:9414
dev_xdp_attach_link net/core/dev.c:9433 [inline]
bpf_xdp_link_attach+0x366/0x6d0 net/core/dev.c:9603
link_create+0x3ff/0x720 kernel/bpf/syscall.c:5078
__sys_bpf+0x479/0x800 kernel/bpf/syscall.c:5543
__do_sys_bpf kernel/bpf/syscall.c:5577 [inline]
__se_sys_bpf kernel/bpf/syscall.c:5575 [inline]
__x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5575
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: 0033:0x7f01a5b8f749
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:00007f01a6a3b038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f01a5de5fa0 RCX: 00007f01a5b8f749
RDX: 0000000000000040 RSI: 0000200000000240 RDI: 000000000000001c
RBP: 00007f01a5c13f91 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f01a5de6038 R14: 00007f01a5de5fa0 R15: 00007fff97f2dd48