rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (1 GPs behind) idle=d79/1/0x4000000000000002 softirq=105788/105789 fqs=2117 (detected by 1, t=10503 jiffies, g=129661, q=2003) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 7173 Comm: syz.9.10414 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/24/2026 RIP: 0010:perf_tp_filter_match kernel/events/core.c:9983 [inline] RIP: 0010:perf_tp_event_match kernel/events/core.c:10003 [inline] RIP: 0010:perf_tp_event+0x321/0xbf0 kernel/events/core.c:10046 Code: 83 e7 03 0f 84 c7 00 00 00 e8 0b 9e e0 ff 49 8d bd e0 02 00 00 48 89 f8 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df 80 3c 08 00 <74> 05 e8 08 a2 25 00 4d 8b bd e0 02 00 00 4d 85 ff 4d 0f 44 fd 49 RSP: 0000:ffffc9000346f480 EFLAGS: 00000046 RAX: 1ffff1101293ae89 RBX: 1ffff11017206a4a RCX: dffffc0000000000 RDX: 0000000000000100 RSI: 0000000000000000 RDI: ffff8880949d7448 RBP: ffffc9000346f708 R08: ffffffff8d89d8af R09: 1ffffffff1b13b15 R10: dffffc0000000000 R11: fffffbfff1b13b16 R12: ffff8880b9035250 R13: ffff8880949d7168 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f66b0b576c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f66b0b56ff8 CR3: 000000004b48b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:10021 perf_trace_preemptirq_template+0x2aa/0x360 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+0x7f/0x4a0 kernel/rcu/tree_plugin.h:674 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 c2 ef 9c 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: 0000:ffffc9000346f940 EFLAGS: 00000206 RAX: 0cccc0759cf53800 RBX: 1ffff9200068df2c RCX: 0cccc0759cf53800 RDX: dffffc0000000000 RSI: ffffffff8a2b2780 RDI: ffffffff8a79f780 RBP: ffffc9000346fa20 R08: ffffffff901d11bf R09: 1ffffffff203a237 R10: dffffc0000000000 R11: fffffbfff203a238 R12: ffffffff8c322f00 R13: dffffc0000000000 R14: 0000000000000246 R15: 0000000000000001 __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422 rcu_read_unlock include/linux/rcupdate.h:772 [inline] hsr_announce+0x29a/0x310 net/hsr/hsr_device.c:410 call_timer_fn+0x17b/0x540 kernel/time/timer.c:1451 expire_timers kernel/time/timer.c:1496 [inline] __run_timers+0x53a/0x7f0 kernel/time/timer.c:1767 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780 handle_softirqs+0x339/0x830 kernel/softirq.c:576 __do_softirq kernel/softirq.c:610 [inline] invoke_softirq kernel/softirq.c:450 [inline] __irq_exit_rcu+0x13b/0x230 kernel/softirq.c:659 irq_exit_rcu+0x5/0x20 kernel/softirq.c:671 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline] sysvec_apic_timer_interrupt+0x52/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0033:0x7f66b28cd187 Code: 00 00 48 8d 35 62 22 12 00 0f 05 bf 7f 00 00 00 b8 e7 00 00 00 0f 05 e9 23 ff ff ff 0f 1f 80 00 00 00 00 48 c7 c0 e8 ff ff ff <64> 48 03 04 25 00 00 00 00 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f RSP: 002b:00007f66b0b57048 EFLAGS: 00000246 RAX: ffffffffffffffe8 RBX: 00007f66b2bb9180 RCX: 00007f66b29abc1f RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000200000000480 RBP: 00007f66b29abc1f R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007f66b2bb9218 R14: 00007f66b2bb9180 R15: 00007ffcc16dd6a8