syzbot

rcu: INFO: rcu_preempt detected expedited stalls on CPUs/tasks: { 0-.... } 2679 jiffies s: 681 root: 0x1/.
rcu: blocking rcu_node structures (internal RCU debug):
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4352 Comm: syz-executor184 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/09/2026
RIP: 0010:check_kcov_mode kernel/kcov.c:182 [inline]
RIP: 0010:__sanitizer_cov_trace_pc+0x1b/0x60 kernel/kcov.c:216
Code: 89 de 5b e9 c7 3e 50 00 00 00 cc cc 00 00 cc 48 8b 04 24 65 48 8b 0d 94 f3 7f 7e 65 8b 15 95 f3 7f 7e 81 e2 00 01 ff 00 74 11 <81> fa 00 01 00 00 75 35 83 b9 1c 16 00 00 00 74 2c 8b 91 f8 15 00
RSP: 0018:ffffc900000075c8 EFLAGS: 00000006
RAX: ffffffff81a59e76 RBX: 0000000000000001 RCX: ffff88801d269e00
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffff8880b8e3580b R09: 1ffff110171c6b01
R10: dffffc0000000000 R11: ffffed10171c6b02 R12: 1ffff110171c6a93
R13: dffffc0000000000 R14: ffff8880b8e35498 R15: dffffc0000000000
FS:  000055555b777480(0000) GS:ffff8880b8e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000000480 CR3: 0000000075daa000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <IRQ>
 get_recursion_context kernel/events/internal.h:219 [inline]
 perf_swevent_get_recursion_context+0xe6/0x150 kernel/events/core.c:9755
 perf_trace_buf_alloc+0x54/0x300 kernel/trace/trace_event_perf.c:414
 perf_trace_preemptirq_template+0x143/0x320 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 82 30 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:ffffc90000007800 EFLAGS: 00000206
RAX: d373d07b51801900 RBX: 1ffff92000000f08 RCX: d373d07b51801900
RDX: dffffc0000000000 RSI: ffffffff8a8c1aa0 RDI: ffffffff8adf2060
RBP: ffffc90000007900 R08: ffffffff90aff24f R09: 1ffffffff215fe49
R10: dffffc0000000000 R11: fffffbfff215fe4a R12: 0000000000000246
R13: dffffc0000000000 R14: ffff8880b8e3b900 R15: 0000000000000001
 __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+0x378/0x850 net/core/dev.c:6194
 virtqueue_napi_complete drivers/net/virtio_net.c:403 [inline]
 virtnet_poll+0x9b7/0x1180 drivers/net/virtio_net.c:1717
 __napi_poll+0xc0/0x460 net/core/dev.c:6628
 napi_poll net/core/dev.c:6695 [inline]
 net_rx_action+0x5dd/0xb20 net/core/dev.c:6809
 handle_softirqs+0x2a1/0x930 kernel/softirq.c:596
 do_softirq+0x142/0x210 kernel/softirq.c:497
 </IRQ>
 <TASK>
 __local_bh_enable_ip+0x180/0x1c0 kernel/softirq.c:421
 spin_unlock_bh include/linux/spinlock.h:396 [inline]
 bpf_link_alloc_id kernel/bpf/syscall.c:2862 [inline]
 bpf_link_prime+0x75/0x1d0 kernel/bpf/syscall.c:2891
 bpf_perf_link_attach+0x1ca/0x3c0 kernel/bpf/syscall.c:3314
 link_create+0x71d/0xa20 kernel/bpf/syscall.c:-1
 __sys_bpf+0x6cb/0x780 kernel/bpf/syscall.c:5101
 __do_sys_bpf kernel/bpf/syscall.c:5135 [inline]
 __se_sys_bpf kernel/bpf/syscall.c:5133 [inline]
 __x64_sys_bpf+0x78/0x90 kernel/bpf/syscall.c:5133
 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: 0033:0x7f18be395cc9
Code: c0 79 93 eb d5 48 8d 7c 1d 00 eb 99 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 d0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd39d00098 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f18be395cc9
RDX: 0000000000000050 RSI: 00002000000002c0 RDI: 000000000000001c
RBP: 0000000000000000 R08: 0000000000000000 R09: 00007ffd39d000cc
R10: 0000000000000000 R11: 0000000000000246 R12: 00007ffd39d000cc
R13: 00007ffd39d00100 R14: 00007ffd39d000e0 R15: 0000000000000007
 </TASK>
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 1.483 msecs