rcu: INFO: rcu_preempt self-detected stall on CPU
rcu: 1-....: (7928 ticks this GP) idle=f9ac/1/0x4000000000000000 softirq=37312/37313 fqs=3408
rcu: hardirqs softirqs csw/system
rcu: number: 1254078 0 0
rcu: cputime: 15061 37427 70 ==> 52490(ms)
rcu: (t=10500 jiffies g=46605 q=2581 ncpus=2)
CPU: 1 PID: 10410 Comm: syz.1.1548 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:rcu_read_unlock_special+0x83/0x470 kernel/rcu/tree_plugin.h:698
Code: eb 03 48 b8 f1 f1 f1 f1 f8 f2 f2 f2 4a 89 04 2b 42 c7 44 2b 08 f8 f3 f3 f3 65 44 8b 35 0e 0c 92 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc900001f0200 EFLAGS: 00000206
RAX: 1660613f8f883200 RBX: 1ffff9200003e044 RCX: 1660613f8f883200
RDX: dffffc0000000000 RSI: ffffffff8acac900 RDI: ffffffff8b1c81e0
RBP: ffffc900001f02c8 R08: ffffffff911bf5a7 R09: 1ffffffff2237eb4
R10: dffffc0000000000 R11: fffffbfff2237eb5 R12: ffffffff8d137200
R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000002
FS: 00007f991846c6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fc31d410f77 CR3: 000000002e305000 CR4: 00000000003506e0
DR0: 0000200000000300 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
__rcu_read_unlock+0x7c/0xd0 kernel/rcu/tree_plugin.h:426
rcu_read_unlock include/linux/rcupdate.h:818 [inline]
is_bpf_text_address+0x27e/0x2a0 kernel/bpf/core.c:743
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+0x6e/0x4b0 mm/slab.h:767
kmem_cache_alloc_bulk+0x452/0x5a0 mm/slub.c:4077
napi_skb_cache_get+0x11c/0x1e0 net/core/skbuff.c:333
__napi_build_skb net/core/skbuff.c:512 [inline]
__napi_alloc_skb+0x230/0x560 net/core/skbuff.c:832
napi_alloc_skb include/linux/skbuff.h:3329 [inline]
page_to_skb+0x2be/0x890 drivers/net/virtio_net.c:570
receive_mergeable drivers/net/virtio_net.c:1703 [inline]
receive_buf+0x2fe/0x3820 drivers/net/virtio_net.c:1835
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:6655
napi_poll net/core/dev.c:6722 [inline]
net_rx_action+0x616/0xc50 net/core/dev.c:6859
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 40 83 30 09 e8 7b 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:ffffc90003b977f8 EFLAGS: 00000282
RAX: 1660613f8f883200 RBX: 0000000000000000 RCX: 1660613f8f883200
RDX: dffffc0000000000 RSI: ffffffff8acac900 RDI: ffffffff8b1c81e0
RBP: ffffc90003b97850 R08: ffffffff911bf5a7 R09: 1ffffffff2237eb4
R10: dffffc0000000000 R11: fffffbfff2237eb5 R12: ffff88802b17da00
R13: dffffc0000000000 R14: ffff88807bcdbc00 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
class_preempt_destructor include/linux/preempt.h:478 [inline]
try_to_wake_up+0x781/0x1190 kernel/sched/core.c:4356
wake_up_process kernel/sched/core.c:4481 [inline]
wake_up_q+0xb6/0x100 kernel/sched/core.c:1032
__mutex_unlock_slowpath+0x65c/0x6c0 kernel/locking/mutex.c:951
__do_sys_perf_event_open kernel/events/core.c:12918 [inline]
__se_sys_perf_event_open+0x1848/0x1c50 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: 0033:0x7f991759aeb9
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:00007f991846c028 EFLAGS: 00000246 ORIG_RAX: 000000000000012a
RAX: ffffffffffffffda RBX: 00007f9917816180 RCX: 00007f991759aeb9
RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000480
RBP: 00007f9917608c1f R08: 0000000000000008 R09: 0000000000000000
R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000
R13: 00007f9917816218 R14: 00007f9917816180 R15: 00007ffc84ccb398