rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (1 GPs behind) idle=2c84/1/0x4000000000000000 softirq=43357/43359 fqs=2443
rcu: hardirqs softirqs csw/system
rcu: number: 1604746 0 0
rcu: cputime: 13737 38752 41 ==> 52490(ms)
rcu: (t=10500 jiffies g=51945 q=732 ncpus=2)
CPU: 1 PID: 13550 Comm: syz.3.2216 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:__kernel_text_address+0x17/0x30 kernel/extable.c:79
Code: 8e e8 1d c5 85 00 eb b8 66 2e 0f 1f 84 00 00 00 00 00 90 66 0f 1f 00 53 48 89 fb e8 23 00 00 00 48 81 fb 00 20 dd 8f 0f 93 c1 <48> 81 fb eb eb f3 8f 0f 92 c2 20 ca 08 c2 0f b6 c2 5b c3 66 0f 1f
RSP: 0018:ffffc900001ef970 EFLAGS: 00000283
RAX: 0000000000000001 RBX: ffffffff815268d0 RCX: 0000000000000100
RDX: ffff88801f6fda00 RSI: 0000000000000002 RDI: ffffffff815268d0
RBP: 0000000000000002 R08: ffff88801f6fda00 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000100 R12: ffffffff887c66f6
R13: 00000000000000f0 R14: dffffc0000000000 R15: 1ffff9200003df3e
FS: 00007f70740826c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000100000000 CR3: 000000006a323000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
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+0x6e/0x4b0 mm/slab.h:767
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+0x11a/0x2d0 mm/slub.c:3519
skb_clone+0x1eb/0x370 net/core/skbuff.c:1915
dev_queue_xmit_nit+0x24d/0xbb0 net/core/dev.c:2353
xmit_one net/core/dev.c:3628 [inline]
dev_hard_start_xmit+0x148/0x740 net/core/dev.c:3648
sch_direct_xmit+0x25e/0x4c0 net/sched/sch_generic.c:345
__dev_xmit_skb net/core/dev.c:3869 [inline]
__dev_queue_xmit+0x165d/0x3660 net/core/dev.c:4404
NF_HOOK+0x331/0x3b0 include/linux/netfilter.h:-1
arp_xmit+0x16c/0x270 net/ipv4/arp.c:664
arp_process+0x13ba/0x17b0 net/ipv4/arp.c:854
NF_HOOK+0x331/0x3b0 include/linux/netfilter.h:-1
__netif_receive_skb_list_ptype net/core/dev.c:5682 [inline]
__netif_receive_skb_list_core+0x429/0x750 net/core/dev.c:5715
__netif_receive_skb_list net/core/dev.c:5777 [inline]
netif_receive_skb_list_internal+0x943/0xca0 net/core/dev.c:5868
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:575 [inline]
napi_gro_receive+0x565/0xb00 net/core/gro.c:605
receive_buf+0x2203/0x3820 drivers/net/virtio_net.c:1870
virtnet_receive drivers/net/virtio_net.c:2155 [inline]
virtnet_poll+0x5dd/0x1280 drivers/net/virtio_net.c:2229
__napi_poll+0xc0/0x460 net/core/dev.c:6638
napi_poll net/core/dev.c:6705 [inline]
net_rx_action+0x616/0xc40 net/core/dev.c:6841
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+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+0x26a/0x8f0 kernel/sched/core.c:5255
Code: 0f 84 33 01 00 00 48 85 db 0f 85 52 01 00 00 0f 1f 44 00 00 4c 8b 75 d0 4c 89 e7 e8 00 54 31 09 e8 9b 23 30 00 fb 4c 8b 65 c0 <49> 8d bc 24 f8 15 00 00 48 89 f8 48 c1 e8 03 42 0f b6 04 28 84 c0
RSP: 0018:ffffc9000b68f878 EFLAGS: 00000286
RAX: ae8c842b72f85800 RBX: 0000000000000000 RCX: ae8c842b72f85800
RDX: dffffc0000000000 RSI: ffffffff8acac960 RDI: ffffffff8b1c85a0
RBP: ffffc9000b68f8d0 R08: ffffffff8e8aeeef R09: 1ffffffff1d15ddd
R10: dffffc0000000000 R11: fffffbfff1d15dde R12: ffff88801f6fda00
R13: dffffc0000000000 R14: ffff888018e9bc00 R15: ffff8880b8f3cac8
context_switch kernel/sched/core.c:5384 [inline]
__schedule+0x155b/0x45a0 kernel/sched/core.c:6700
preempt_schedule_common+0x82/0xc0 kernel/sched/core.c:6867
preempt_schedule+0xc0/0xd0 kernel/sched/core.c:6891
preempt_schedule_thunk+0x1a/0x30 arch/x86/entry/thunk_64.S:45
__raw_spin_unlock include/linux/spinlock_api_smp.h:143 [inline]
_raw_spin_unlock+0x3a/0x40 kernel/locking/spinlock.c:186
spin_unlock include/linux/spinlock.h:391 [inline]
futex_wake+0x41d/0x4f0 kernel/futex/waitwake.c:183
do_futex+0x35d/0x3e0 kernel/futex/syscalls.c:139
__do_sys_futex kernel/futex/syscalls.c:211 [inline]
__se_sys_futex+0x3a9/0x440 kernel/futex/syscalls.c:192
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xa0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f707319c799
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:00007f70740820e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca
RAX: ffffffffffffffda RBX: 00007f7073415fa8 RCX: 00007f707319c799
RDX: 00000000000f4240 RSI: 0000000000000081 RDI: 00007f7073415fac
RBP: 00007f7073415fa0 R08: 0000000000745a77 R09: 0000000000000000
R10: 0000000000000005 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f7073416038 R14: 00007ffe7a7fb610 R15: 00007ffe7a7fb6f8