RBP: 00007f8dc93b1da0 R08: 0000000000000a84 R09: 00000016affe008f R10: 00007f8dc93b1cb0 R11: 0000000000000246 R12: 0000000000213c23 R13: 00007ffeaffdfe90 R14: ffffffffffffffff R15: 00007ffeaffdfeb0 watchdog: BUG: soft lockup - CPU#1 stuck for 246s! [syz.9.20768:22163] Modules linked in: CPU: 1 PID: 22163 Comm: syz.9.20768 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline] RIP: 0010:smp_call_function_many_cond+0x8e0/0x9f0 kernel/smp.c:969 Code: 24 10 75 07 e8 d1 33 0a 00 eb 42 f3 90 48 b8 00 00 00 00 00 fc ff df 41 0f b6 44 05 00 84 c0 75 10 41 f7 07 01 00 00 00 74 1e ab 33 0a 00 eb da 44 89 f9 80 e1 07 80 c1 03 38 c1 7c e3 4c 89 RSP: 0018:ffffc90000b57840 EFLAGS: 00000202 RAX: 0000000000000000 RBX: ffff8881f7138e80 RCX: ffff88810adaa780 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90000b57958 R08: dffffc0000000000 R09: ffffed103ee271d3 R10: ffffed103ee271d3 R11: 1ffff1103ee271d2 R12: 1ffff1103ee271d0 R13: 1ffff1103ee07af9 R14: 0000000000000000 R15: ffff8881f703d7c8 FS: 0000555584a48500(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffe5dcf8f80 CR3: 000000012090f000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000200000000300 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: on_each_cpu_cond_mask+0x43/0x80 kernel/smp.c:1134 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:1442 [inline] text_poke_bp_batch+0x1cd/0x5a0 arch/x86/kernel/alternative.c:1642 text_poke_flush arch/x86/kernel/alternative.c:1833 [inline] text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:1840 arch_jump_label_transform_apply+0x15/0x30 arch/x86/kernel/jump_label.c:146 __jump_label_update+0x37c/0x3a0 kernel/jump_label.c:459 jump_label_update+0x39b/0x450 kernel/jump_label.c:830 static_key_disable_cpuslocked+0xc5/0x1a0 kernel/jump_label.c:207 static_key_disable+0x1a/0x30 kernel/jump_label.c:215 tracepoint_remove_func kernel/tracepoint.c:417 [inline] tracepoint_probe_unregister+0x60e/0x890 kernel/tracepoint.c:551 bpf_probe_unregister+0x61/0x70 kernel/trace/bpf_trace.c:1952 bpf_raw_tp_link_release+0x63/0x90 kernel/bpf/syscall.c:2880 bpf_link_free+0x129/0x370 kernel/bpf/syscall.c:2446 bpf_link_put kernel/bpf/syscall.c:2472 [inline] bpf_link_release+0x15f/0x170 kernel/bpf/syscall.c:2480 __fput+0x20b/0x8b0 fs/file_table.c:311 ____fput+0x15/0x20 fs/file_table.c:339 task_work_run+0x127/0x190 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] exit_to_user_mode_loop+0xd0/0xe0 kernel/entry/common.c:181 exit_to_user_mode_prepare+0x87/0xd0 kernel/entry/common.c:214 __syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline] syscall_exit_to_user_mode+0x1a/0x30 kernel/entry/common.c:307 do_syscall_64+0x58/0xa0 arch/x86/entry/common.c:86 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f8dc9159749 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:00007ffeaffdfd98 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4 RAX: 0000000000000000 RBX: 00007f8dc93b1da0 RCX: 00007f8dc9159749 RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003 RBP: 00007f8dc93b1da0 R08: 0000000000000a84 R09: 00000016affe008f R10: 00007f8dc93b1cb0 R11: 0000000000000246 R12: 0000000000213c23 R13: 00007ffeaffdfe90 R14: ffffffffffffffff R15: 00007ffeaffdfeb0 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 22173 Comm: syz.5.20771 Not tainted syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025 RIP: 0010:native_halt arch/x86/include/asm/irqflags.h:57 [inline] RIP: 0010:halt arch/x86/include/asm/irqflags.h:98 [inline] RIP: 0010:kvm_wait+0xcc/0x140 arch/x86/kernel/kvm.c:912 Code: 20 f6 44 24 21 02 75 24 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 48 0f b6 07 40 38 f0 75 a6 66 90 0f 00 2d 45 92 d6 03 f4 9a fa 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 3f 0f b6 07 RSP: 0018:ffffc90000c57420 EFLAGS: 00000046 RAX: 0000000000000003 RBX: ffff8881002f9cac RCX: ffffffff814f4289 RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffff8881002f9cac RBP: ffffc90000c574b0 R08: dffffc0000000000 R09: ffffed102005f396 R10: ffffed102005f396 R11: 1ffff1102005f395 R12: 1ffff1103ee00001 R13: ffff8881f7038ad4 R14: dffffc0000000000 R15: 1ffff9200018ae84 FS: 00007f06145236c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000001449d1000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: pv_wait arch/x86/include/asm/paravirt.h:597 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x60f/0x9c0 kernel/locking/qspinlock.c:508 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:585 [inline] queued_spin_lock_slowpath+0x47/0x50 arch/x86/include/asm/qspinlock.h:51 queued_spin_lock include/asm-generic/qspinlock.h:85 [inline] do_raw_spin_lock include/linux/spinlock.h:188 [inline] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:129 [inline] _raw_spin_lock_irq+0xd9/0xe0 kernel/locking/spinlock.c:170 get_wchan kernel/sched/core.c:2021 [inline] perf_trace_sched_blocked_reason+0x243/0x4a0 include/trace/events/sched.h:490 trace_sched_blocked_reason include/trace/events/sched.h:490 [inline] try_to_wake_up+0xea1/0x1160 kernel/sched/core.c:4190 wake_up_process+0x10/0x20 kernel/sched/core.c:4348 swake_up_locked kernel/sched/swait.c:30 [inline] swake_up_one+0x6a/0x150 kernel/sched/swait.c:53 __rcu_report_exp_rnp+0x1aa/0x1b0 kernel/rcu/tree_exp.h:201 rcu_report_exp_rnp kernel/rcu/tree_exp.h:223 [inline] rcu_preempt_deferred_qs_irqrestore+0x6f3/0x9d0 kernel/rcu/tree_plugin.h:562 rcu_read_unlock_special+0xab/0x460 kernel/rcu/tree_plugin.h:673 __rcu_read_unlock+0x5e/0xa0 kernel/rcu/tree_plugin.h:422 rcu_read_unlock include/linux/rcupdate.h:781 [inline] bpf_test_timer_leave net/bpf/test_run.c:51 [inline] bpf_test_run+0x858/0x8d0 net/bpf/test_run.c:122 bpf_prog_test_run_xdp+0x404/0x910 net/bpf/test_run.c:812 bpf_prog_test_run+0x3d5/0x620 kernel/bpf/syscall.c:3348 __sys_bpf+0x52c/0x730 kernel/bpf/syscall.c:4651 __do_sys_bpf kernel/bpf/syscall.c:4737 [inline] __se_sys_bpf kernel/bpf/syscall.c:4735 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:4735 x64_sys_call+0x4b9/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322 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: 0033:0x7f0615abb749 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:00007f0614523038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f0615d11fa0 RCX: 00007f0615abb749 RDX: 0000000000000050 RSI: 0000200000000180 RDI: 000000000000000a RBP: 00007f0615b3ff91 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f0615d12038 R14: 00007f0615d11fa0 R15: 00007ffd1ea08028