rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (1 GPs behind) idle=091/1/0x4000000000000002 softirq=51789/51790 fqs=5235 (detected by 1, t=10502 jiffies, g=74121, q=1379) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 16216 Comm: syz.3.3829 Not tainted 5.15.185-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:rcu_read_unlock_special+0x138/0x480 kernel/rcu/tree_plugin.h:636 Code: 08 0f 83 dd 02 00 00 4e 8d 34 f5 10 f8 ba 8b 4c 89 f0 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 f7 e8 3d f0 58 00 4c 89 64 24 10 <4d> 8b 2e 4d 8d b5 98 b1 03 00 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 RSP: 0018:ffffc90000007200 EFLAGS: 00000046 RAX: 1ffffffff1775f02 RBX: 1ffff92000000e44 RCX: f53763cad9f23c00 RDX: 0000000000000100 RSI: ffffffff8a59a720 RDI: ffffffff8a59a6e0 RBP: ffffc900000072e0 R08: dffffc0000000000 R09: fffffbfff1ad157e R10: fffffbfff1ad157e R11: 1ffffffff1ad157d R12: 0000000000000046 R13: dffffc0000000000 R14: ffffffff8bbaf810 R15: ffff8880279c5940 FS: 00007fb20d1846c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000006741c000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __rcu_read_unlock+0x78/0xd0 kernel/rcu/tree_plugin.h:422 rcu_read_unlock include/linux/rcupdate.h:771 [inline] __perf_event_output kernel/events/core.c:7789 [inline] perf_event_output_forward+0x216/0x280 kernel/events/core.c:7798 __perf_event_overflow+0x364/0x530 kernel/events/core.c:9491 perf_swevent_overflow kernel/events/core.c:9567 [inline] perf_swevent_event+0x4ad/0x530 kernel/events/core.c:9605 perf_tp_event+0x32c/0xb50 kernel/events/core.c:10023 perf_trace_run_bpf_submit+0xf3/0x1c0 kernel/events/core.c:9997 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:671 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 8d 26 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:ffffc900000079e0 EFLAGS: 00000206 RAX: f53763cad9f23c00 RBX: 1ffff92000000f40 RCX: f53763cad9f23c00 RDX: dffffc0000000000 RSI: ffffffff8a0b11c0 RDI: ffffffff8a59a740 RBP: ffffc90000007ac0 R08: dffffc0000000000 R09: fffffbfff1ff3639 R10: fffffbfff1ff3639 R11: 1ffffffff1ff3638 R12: ffffffff8c120400 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] hsr_announce+0x294/0x300 net/hsr/hsr_device.c:387 call_timer_fn+0x16c/0x530 kernel/time/timer.c:1451 expire_timers kernel/time/timer.c:1496 [inline] __run_timers+0x525/0x7c0 kernel/time/timer.c:1767 run_timer_softirq+0x63/0xf0 kernel/time/timer.c:1780 handle_softirqs+0x328/0x820 kernel/softirq.c:576 __do_softirq kernel/softirq.c:610 [inline] invoke_softirq kernel/softirq.c:450 [inline] __irq_exit_rcu+0x12f/0x220 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+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676 RIP: 0010:fd_install+0x11e/0x4c0 fs/file.c:602 Code: 41 80 3e 01 0f 84 f5 01 00 00 48 89 dd 49 83 c7 58 4c 89 f8 48 c1 e8 03 42 80 3c 28 00 74 08 4c 89 ff e8 65 18 ee ff 49 8b 1f 9d 50 d2 07 41 89 c7 31 ff 89 c6 e8 a1 a3 a8 ff 45 85 ff 74 21 RSP: 0018:ffffc90002f8fd60 EFLAGS: 00000246 RAX: 1ffff110049af973 RBX: ffff888052fc6e80 RCX: ffff8880279c5940 RDX: 0000000000000000 RSI: ffffffff8a59a720 RDI: ffffffff8a59a6e0 RBP: ffff888063a41900 R08: dffffc0000000000 R09: fffffbfff1ff362d R10: fffffbfff1ff362d R11: 1ffffffff1ff362c R12: 0000000000000024 R13: dffffc0000000000 R14: ffff888024d7cb44 R15: ffff888024d7cb98 __do_sys_perf_event_open kernel/events/core.c:12769 [inline] __se_sys_perf_event_open+0x19dc/0x1b80 kernel/events/core.c:12340 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7fb20f31c929 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb20d184038 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 00007fb20f543fa0 RCX: 00007fb20f31c929 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000200000000480 RBP: 00007fb20f39eb39 R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000001 R14: 00007fb20f543fa0 R15: 00007ffcb908e0c8