rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (1 GPs behind) idle=7a5/1/0x4000000000000002 softirq=12403/12404 fqs=5245 (detected by 1, t=10502 jiffies, g=15409, q=1430) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 14 Comm: ksoftirqd/0 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:check_preemption_disabled+0x1/0x110 lib/smp_processor_id.c:13 Code: 00 48 c7 c7 00 ce 12 8a e8 2c 01 00 00 65 ff 0d 41 56 5a 76 5b c3 00 00 cc 48 c7 c7 e0 a1 59 8a 48 c7 c6 20 a2 59 8a eb 00 55 <41> 57 41 56 53 48 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 RSP: 0018:ffffc90000d375f0 EFLAGS: 00000046 RAX: ffffffff8196e4cf RBX: dffffc0000000000 RCX: ffff88813fea9dc0 RDX: 0000000000000100 RSI: ffffffff8a59a220 RDI: ffffffff8a59a1e0 RBP: ffffc90000d37868 R08: dffffc0000000000 R09: fffffbfff1ad31be R10: fffffbfff1ad31be R11: 1ffffffff1ad31bd R12: ffff8880b9035200 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f1aa1eb2000 CR3: 000000007913e000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: perf_swevent_put_recursion_context kernel/events/core.c:9750 [inline] perf_tp_event+0xa1b/0xb50 kernel/events/core.c:10080 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021 perf_trace_preemptirq_template+0x2be/0x380 include/trace/events/preemptirq.h:14 trace_irq_enable_rcuidle+0x108/0x180 include/trace/events/preemptirq.h:40 trace_hardirqs_on+0x57/0x80 kernel/trace/trace_preemptirq.c:44 asm_sysvec_irq_work+0x16/0x20 arch/x86/include/asm/idtentry.h:713 RIP: 0010:rcu_read_unlock_special+0x84/0x480 kernel/rcu/tree_plugin.h:674 Code: f1 f1 f1 00 f2 f2 f2 4a 89 04 2b 66 42 c7 44 2b 09 f3 f3 42 c6 44 2b 0b f3 65 44 8b 35 dd 13 9e 7e 41 f7 c6 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 2b 00 00 00 00 66 42 c7 44 2b RSP: 0018:ffffc90000d37ac0 EFLAGS: 00000206 RAX: 4fc6a25fe7141600 RBX: 1ffff920001a6f5c RCX: 4fc6a25fe7141600 RDX: dffffc0000000000 RSI: ffffffff8a0b1620 RDI: ffffffff8a59a240 RBP: ffffc90000d37ba0 R08: dffffc0000000000 R09: ffffed101720765a R10: ffffed101720765a R11: 1ffff11017207659 R12: ffffffff8c120900 R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422 rcu_read_unlock include/linux/rcupdate.h:771 [inline] net_tx_action+0x7ea/0x870 net/core/dev.c:5133 handle_softirqs+0x328/0x820 kernel/softirq.c:576 run_ksoftirqd+0x98/0xf0 kernel/softirq.c:943 smpboot_thread_fn+0x4f6/0x970 kernel/smpboot.c:164 kthread+0x436/0x520 kernel/kthread.c:334 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:287