rcu: INFO: rcu_preempt detected stalls on CPUs/tasks: rcu: 0-....: (344 ticks this GP) idle=efb/1/0x4000000000000002 softirq=6038/6038 fqs=5250 (detected by 1, t=10502 jiffies, g=7169, q=30) Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 3737 Comm: syz-executor375 Not tainted 5.15.146-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023 RIP: 0010:rcu_read_unlock_special+0xc3/0x520 kernel/rcu/tree_plugin.h:671 Code: 3a 09 00 00 42 c6 44 3a 0b 00 65 48 8b 04 25 28 00 00 00 48 3b 84 24 80 00 00 00 0f 85 59 04 00 00 48 8d 65 d8 5b 41 5c 41 5d <41> 5e 41 5f 5d c3 49 89 fd 4c 8d 74 24 60 4c 89 f3 48 c1 eb 03 80 RSP: 0018:ffffc90000006e88 EFLAGS: 00000046 RAX: 8135b38e4119b700 RBX: 1ffff11002cf3087 RCX: ffffffff816ba137 RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffff888016798000 RBP: ffffc90000006e98 R08: dffffc0000000000 R09: ffffed1002cf3001 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff88801679843c R14: ffffc90000006e00 R15: 1ffff92000000dbc FS: 000055555580b380(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000200003c0 CR3: 000000006f454000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __rcu_read_unlock+0x92/0x100 kernel/rcu/tree_plugin.h:422 rcu_read_unlock include/linux/rcupdate.h:728 [inline] __perf_event_output kernel/events/core.c:7728 [inline] perf_event_output_forward+0x292/0x310 kernel/events/core.c:7737 __perf_event_overflow+0x35d/0x530 kernel/events/core.c:9432 perf_swevent_overflow kernel/events/core.c:9508 [inline] perf_swevent_event+0x4c5/0x550 kernel/events/core.c:9546 perf_tp_event+0x363/0xc40 kernel/events/core.c:9964 perf_trace_run_bpf_submit+0xf7/0x1d0 kernel/events/core.c:9938 perf_trace_preemptirq_template+0x31d/0x430 include/trace/events/preemptirq.h:14 trace_irq_enable_rcuidle+0x10e/0x190 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:664 RIP: 0010:rcu_read_unlock_special+0x84/0x520 kernel/rcu/tree_plugin.h:671 Code: f1 f1 f1 00 f2 f2 f2 49 89 04 17 66 41 c7 44 17 09 f3 f3 41 c6 44 17 0b f3 65 44 8b 25 bd d0 96 7e 41 f7 c4 00 00 f0 00 74 45 <48> c7 44 24 20 0e 36 e0 45 4a c7 04 3a 00 00 00 00 66 42 c7 44 3a RSP: 0018:ffffc900000075a0 EFLAGS: 00000206 RAX: 8135b38e4119b700 RBX: 1ffff92000000ebc RCX: ffffffff8162ee48 RDX: dffffc0000000000 RSI: ffffffff8a8b0f80 RDI: ffffffff8ad87e00 RBP: ffffc90000007678 R08: dffffc0000000000 R09: fffffbfff1f79e32 R10: 0000000000000000 R11: dffffc0000000001 R12: ffffffff8c923200 R13: ffff888016798458 R14: ffffc900000075e0 R15: 1ffff92000000eb8 __rcu_read_unlock+0x92/0x100 kernel/rcu/tree_plugin.h:422 rcu_read_unlock include/linux/rcupdate.h:728 [inline] is_bpf_text_address+0x24a/0x260 kernel/bpf/core.c:723 kernel_text_address kernel/extable.c:151 [inline] __kernel_text_address+0x94/0x100 kernel/extable.c:105 unwind_get_return_address+0x49/0x80 arch/x86/kernel/unwind_orc.c:323 arch_stack_walk+0xf3/0x140 arch/x86/kernel/stacktrace.c:26 stack_trace_save+0x113/0x1c0 kernel/stacktrace.c:122 kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track+0x4b/0x80 mm/kasan/common.c:46 kasan_set_free_info+0x1f/0x40 mm/kasan/generic.c:360 ____kasan_slab_free+0xd8/0x120 mm/kasan/common.c:366 kasan_slab_free include/linux/kasan.h:230 [inline] slab_free_hook mm/slub.c:1705 [inline] slab_free_freelist_hook+0xdd/0x160 mm/slub.c:1731 slab_free mm/slub.c:3499 [inline] kmem_cache_free+0x91/0x1f0 mm/slub.c:3515 rcu_do_batch kernel/rcu/tree.c:2523 [inline] rcu_core+0xa15/0x1650 kernel/rcu/tree.c:2763 __do_softirq+0x3b3/0x93a kernel/softirq.c:558 invoke_softirq kernel/softirq.c:432 [inline] __irq_exit_rcu+0x155/0x240 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 sysvec_apic_timer_interrupt+0x91/0xb0 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:638 RIP: 0010:generic_exec_single+0x3d3/0x4d0 kernel/smp.c:532 Code: df eb 27 e8 4f d7 0b 00 0f 0b e9 58 fd ff ff e8 43 d7 0b 00 e8 9e 35 a8 08 4d 85 ff 0f 84 5e ff ff ff e8 30 d7 0b 00 fb 31 c0 <48> c7 44 24 20 0e 36 e0 45 4b c7 04 2c 00 00 00 00 66 43 c7 44 2c RSP: 0018:ffffc900034979e0 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff888016798000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90003497ab0 R08: ffffffff81745252 R09: fffffbfff1f79e32 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: 1ffff92000692f40 R14: 0000000000000046 R15: 0000000000000200 smp_call_function_single+0x257/0x530 kernel/smp.c:755 task_function_call kernel/events/core.c:120 [inline] perf_install_in_context+0x6b6/0xa90 kernel/events/core.c:3019 __do_sys_perf_event_open kernel/events/core.c:12672 [inline] __se_sys_perf_event_open+0x3608/0x4510 kernel/events/core.c:12266 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fd32d8edf49 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 21 18 00 00 90 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff4b1ab488 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007fd32d8edf49 RDX: bfffffffffffffff RSI: 0000000000000000 RDI: 0000000020000180 RBP: 0000000000000000 R08: 0000000000000000 R09: 000000005580c610 R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 3.285 msecs