rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (10133 ticks this GP) idle=eb54/1/0x4000000000000000 softirq=77173/77173 fqs=4386
rcu: hardirqs softirqs csw/system
rcu: number: 1134251 0 0
rcu: cputime: 17766 34723 57 ==> 52510(ms)
rcu: (t=10502 jiffies g=109269 q=1310 ncpus=2)
CPU: 1 PID: 19230 Comm: syz.2.4285 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026
RIP: 0010:unwind_done arch/x86/include/asm/unwind.h:50 [inline]
RIP: 0010:__unwind_start+0x66a/0x7e0 arch/x86/kernel/unwind_orc.c:757
Code: f4 0f 87 8a 00 00 00 e8 c4 a8 4b 00 49 89 ee 48 8b 6c 24 28 eb 0c e8 b5 a8 4b 00 eb 05 e8 ae a8 4b 00 48 89 df e8 26 cb ff ff <48> b8 00 00 00 00 00 fc ff df 41 0f b6 04 06 84 c0 75 0f 83 3b 00
RSP: 0018:ffffc900001efda0 EFLAGS: 00000282
RAX: ffffffff813b5301 RBX: ffffc900001efe08 RCX: ffff88807d4d1e00
RDX: 0000000000000100 RSI: 0000000000000101 RDI: 0000000000000000
RBP: ffffc900001efe98 R08: ffff88807d4d1e00 R09: 0000000000000003
R10: 0000000000000004 R11: 0000000000000100 R12: ffffc900001efda0
R13: ffffc900001efe18 R14: 1ffff9200003dfc1 R15: ffffc900001efe10
FS: 00007ff5c0ba96c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055866221da38 CR3: 0000000060b0c000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000200000000300 DR2: 0000200000000300
DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0xf8/0x190 arch/x86/kernel/stacktrace.c:24
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]
kmem_cache_alloc_node+0x14c/0x320 mm/slub.c:3540
__alloc_skb+0x103/0x2c0 net/core/skbuff.c:643
alloc_skb include/linux/skbuff.h:1284 [inline]
arp_create+0x19f/0x9f0 net/ipv4/arp.c:560
arp_send_dst+0xa7/0x230 net/ipv4/arp.c:314
arp_process+0x13ab/0x17a0 net/ipv4/arp.c:854
NF_HOOK+0x331/0x3b0 include/linux/netfilter.h:-1
__netif_receive_skb_list_ptype net/core/dev.c:5669 [inline]
__netif_receive_skb_list_core+0x429/0x750 net/core/dev.c:5702
__netif_receive_skb_list net/core/dev.c:5764 [inline]
netif_receive_skb_list_internal+0x943/0xca0 net/core/dev.c:5855
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:6625
napi_poll net/core/dev.c:6692 [inline]
net_rx_action+0x616/0xc40 net/core/dev.c:6828
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 f0 a3 30 09 e8 8b 22 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:ffffc900052b7758 EFLAGS: 00000282
RAX: c6f4524261493c00 RBX: 0000000000000000 RCX: c6f4524261493c00
RDX: dffffc0000000000 RSI: ffffffff8acac900 RDI: ffffffff8b1c81e0
RBP: ffffc900052b77b0 R08: ffffffff911bf5ff R09: 1ffffffff2237ebf
R10: dffffc0000000000 R11: fffffbfff2237ec0 R12: ffff88807d4d1e00
R13: dffffc0000000000 R14: ffff88801b670000 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
smp_call_function_single+0x48d/0x5a0 kernel/smp.c:652
task_function_call kernel/events/core.c:120 [inline]
perf_install_in_context+0x5be/0x920 kernel/events/core.c:2948
__do_sys_perf_event_open kernel/events/core.c:12915 [inline]
__se_sys_perf_event_open+0x1836/0x1c50 kernel/events/core.c:12567
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: 0033:0x7ff5bfd9bf79
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:00007ff5c0ba9028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007ff5c0015fa0 RCX: 00007ff5bfd9bf79
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000140
RBP: 00007ff5bfe327e0 R08: 0000000000000002 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007ff5c0016038 R14: 00007ff5c0015fa0 R15: 00007ffcd36f04a8