rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 1-.... } 2659 jiffies s: 41905 root: 0x2/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 11271 Comm: syz.1.1884 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/24/2026
RIP: 0010:__sanitizer_cov_trace_pc+0x58/0x60 kernel/kcov.c:234
Code: f8 15 00 00 83 fa 02 75 21 48 8b 91 00 16 00 00 48 8b 32 48 8d 7e 01 8b 89 fc 15 00 00 48 39 cf 73 08 48 89 3a 48 89 44 f2 08 <c3> 0f 1f 80 00 00 00 00 48 8b 04 24 65 48 8b 15 54 3f 80 7e 65 8b
RSP: 0018:ffffc900001dff58 EFLAGS: 00000046
RAX: ffffffff81a8995b RBX: ffff88802f0eec00 RCX: ffff8880464a5a00
RDX: 0000000000000100 RSI: ffffffff8adf5f80 RDI: ffffffff8adf5f40
RBP: ffffc900001e0090 R08: dffffc0000000000 R09: 1ffffffff2162448
R10: dffffc0000000000 R11: fffffbfff2162449 R12: 1ffff9200003bffc
R13: ffffc900001e00e0 R14: 0000000000000068 R15: 0000000000000001
FS:  00007f6ef01e86c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000034000 CR3: 0000000057517000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 rcu_read_lock include/linux/rcupdate.h:792 [inline]
 __perf_output_begin kernel/events/ring_buffer.c:163 [inline]
 perf_output_begin_forward+0xeb/0xa70 kernel/events/ring_buffer.c:272
 __perf_event_output kernel/events/core.c:7732 [inline]
 perf_event_output_forward+0x1ad/0x2f0 kernel/events/core.c:7750
 __perf_event_overflow+0x457/0x630 kernel/events/core.c:9496
 perf_swevent_overflow kernel/events/core.c:9579 [inline]
 perf_swevent_event+0x315/0x570 kernel/events/core.c:9630
 perf_tp_event+0x36b/0xc10 kernel/events/core.c:10064
 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10032
 perf_trace_preemptirq_template+0x268/0x320 include/trace/events/preemptirq.h:14
 trace_irq_enable_rcuidle+0xd3/0x140 include/trace/events/preemptirq.h:40
 trace_hardirqs_on+0x24/0x40 kernel/trace/trace_preemptirq.c:44
 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:728
RIP: 0010:rcu_read_unlock_special+0x7f/0x510 kernel/rcu/tree_plugin.h:685
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 12 7c 95 7e 41 f7 c6 00 00 f0 00 74 40 <48> c7 44 24 40 0e 36 e0 45 4a c7 04 2b 00 00 00 00 42 c7 44 2b 08
RSP: 0018:ffffc900001e07a0 EFLAGS: 00000206
RAX: 356be63e6a97ad00 RBX: 1ffff9200003c0fc RCX: 356be63e6a97ad00
RDX: dffffc0000000000 RSI: ffffffff8a8c1820 RDI: ffffffff8adf5fa0
RBP: ffffc900001e08a0 R08: ffffffff90b12267 R09: 1ffffffff216244c
R10: dffffc0000000000 R11: fffffbfff216244d R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8f3bb00 R15: 0000000000000002
 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:426
 rcu_read_unlock include/linux/rcupdate.h:823 [inline]
 netif_receive_skb_list_internal+0xa11/0xca0 net/core/dev.c:5854
 gro_normal_list include/net/gro.h:433 [inline]
 napi_complete_done+0x37e/0x850 net/core/dev.c:6194
 virtqueue_napi_complete drivers/net/virtio_net.c:404 [inline]
 virtnet_poll+0x9c3/0x1140 drivers/net/virtio_net.c:1724
 __napi_poll+0xbb/0x460 net/core/dev.c:6628
 napi_poll net/core/dev.c:6695 [inline]
 net_rx_action+0x622/0xbc0 net/core/dev.c:6809
 handle_softirqs+0x291/0x910 kernel/softirq.c:596
 __do_softirq kernel/softirq.c:630 [inline]
 invoke_softirq kernel/softirq.c:470 [inline]
 __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:679
 irq_exit_rcu+0x5/0x20 kernel/softirq.c:691
 common_interrupt+0xb5/0xd0 arch/x86/kernel/irq.c:242
 </IRQ>
 <TASK>
 asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:682
RIP: 0010:unwind_next_frame+0x7e/0x1fd0 arch/x86/kernel/unwind_orc.c:-1
Code: 8b 6b 38 49 89 df 49 c1 ef 03 43 0f b6 04 37 84 c0 0f 85 46 18 00 00 8b 03 85 c0 0f 84 24 17 00 00 89 44 24 64 48 89 6c 24 40 <4c> 89 6c 24 68 4c 89 64 24 48 4c 89 7c 24 10 bf 01 00 00 00 e8 79
RSP: 0018:ffffc90003d37060 EFLAGS: 00000202
RAX: 0000000000000001 RBX: ffffc90003d37108 RCX: 0000000080000000
RDX: dffffc0000000000 RSI: ffffffff882c67b2 RDI: ffffc90003d37140
RBP: 1ffff920007a6e28 R08: ffffc90003d371d0 R09: 000000000000000b
R10: dffffc0000000000 R11: fffff520007a6e2d R12: ffffffff882c67b2
R13: ffffc90003d37b60 R14: dffffc0000000000 R15: 1ffff920007a6e21
 arch_stack_walk+0x10c/0x140 arch/x86/kernel/stacktrace.c:25
 stack_trace_save+0xa6/0xf0 kernel/stacktrace.c:122
 kasan_save_stack mm/kasan/common.c:46 [inline]
 kasan_set_track+0x4b/0x70 mm/kasan/common.c:53
 __kasan_slab_alloc+0x6b/0x80 mm/kasan/common.c:329
 kasan_slab_alloc include/linux/kasan.h:201 [inline]
 slab_post_alloc_hook+0x4b/0x490 mm/slab.h:737
 slab_alloc_node mm/slub.c:3359 [inline]
 kmem_cache_alloc_node+0x1ad/0x310 mm/slub.c:3404
 __alloc_skb+0xf9/0x7d0 net/core/skbuff.c:505
 alloc_skb include/linux/skbuff.h:1303 [inline]
 nlmsg_new include/net/netlink.h:998 [inline]
 netlink_ack+0x373/0x1160 net/netlink/af_netlink.c:2453
 netlink_rcv_skb+0x26d/0x440 net/netlink/af_netlink.c:2522
 genl_rcv+0x24/0x40 net/netlink/genetlink.c:861
 netlink_unicast_kernel net/netlink/af_netlink.c:1318 [inline]
 netlink_unicast+0x7ad/0x920 net/netlink/af_netlink.c:1344
 netlink_sendmsg+0x8ad/0xbd0 net/netlink/af_netlink.c:1877
 sock_sendmsg_nosec net/socket.c:718 [inline]
 __sock_sendmsg net/socket.c:730 [inline]
 ____sys_sendmsg+0x5ed/0x9a0 net/socket.c:2519
 ___sys_sendmsg+0x2a2/0x360 net/socket.c:2573
 __sys_sendmsg net/socket.c:2602 [inline]
 __do_sys_sendmsg net/socket.c:2611 [inline]
 __se_sys_sendmsg+0x1c3/0x2b0 net/socket.c:2609
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f6eef39e0d9
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:00007f6ef01e8028 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f6eef625fa0 RCX: 00007f6eef39e0d9
RDX: 0000000004000800 RSI: 0000200000000000 RDI: 0000000000000005
RBP: 00007f6eef435024 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f6eef626038 R14: 00007f6eef625fa0 R15: 00007ffd92a35208
 </TASK>