kthread+0x346/0x3d0 kernel/kthread.c:313 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298 watchdog: BUG: soft lockup - CPU#0 stuck for 123s! [syz.7.16411:27687] Modules linked in: CPU: 0 PID: 27687 Comm: syz.7.16411 Tainted: G W 5.10.238-syzkaller-00282-gd76d4cd0623a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/29/2025 RIP: 0010:csd_lock_wait kernel/smp.c:229 [inline] RIP: 0010:smp_call_function_single+0x1f5/0x470 kernel/smp.c:517 Code: 48 44 89 f6 83 e6 01 31 ff e8 d7 6e 0a 00 41 83 e6 01 49 bc 00 00 00 00 00 fc ff df 75 0a e8 12 6b 0a 00 e9 a9 00 00 00 f3 90 44 24 48 01 00 00 00 0f 84 94 00 00 00 e8 f8 6a 0a 00 eb e9 e8 RSP: 0018:ffffc900010373a0 EFLAGS: 00000293 RAX: ffffffff81592918 RBX: 0000000000000000 RCX: ffff88810b86cf00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffffc90001037490 R08: dffffc0000000000 R09: ffffed103ee2aec9 R10: ffffed103ee2aec9 R11: 1ffff1103ee2aec8 R12: dffffc0000000000 R13: 0000000000000001 R14: 0000000000000001 R15: 1ffff92000206e78 FS: 0000000000000000(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffff8a50fe88 CR3: 000000000620f000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: smp_call_function_many_cond+0x8f2/0x9e0 kernel/smp.c:653 smp_call_function_many kernel/smp.c:716 [inline] smp_call_function kernel/smp.c:738 [inline] on_each_cpu+0xab/0x170 kernel/smp.c:837 text_poke_sync arch/x86/kernel/alternative.c:1318 [inline] text_poke_bp_batch+0x1b3/0x4a0 arch/x86/kernel/alternative.c:1509 text_poke_flush arch/x86/kernel/alternative.c:1677 [inline] text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:1684 arch_jump_label_transform_apply+0x15/0x30 arch/x86/kernel/jump_label.c:126 __jump_label_update+0x37c/0x3a0 kernel/jump_label.c:459 jump_label_update+0x34c/0x3e0 kernel/jump_label.c:825 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:438 [inline] tracepoint_probe_unregister+0x6cb/0x950 kernel/tracepoint.c:572 bpf_probe_unregister+0x61/0x70 kernel/trace/bpf_trace.c:2135 bpf_raw_tp_link_release+0x63/0x90 kernel/bpf/syscall.c:2762 bpf_link_free kernel/bpf/syscall.c:2351 [inline] bpf_link_put+0x1f6/0x280 kernel/bpf/syscall.c:2377 bpf_link_release+0x3b/0x40 kernel/bpf/syscall.c:2385 __fput+0x2fb/0x770 fs/file_table.c:281 ____fput+0x15/0x20 fs/file_table.c:314 task_work_run+0x127/0x190 kernel/task_work.c:189 exit_task_work include/linux/task_work.h:33 [inline] do_exit+0xa27/0x2470 kernel/exit.c:863 do_group_exit+0x141/0x310 kernel/exit.c:985 get_signal+0xf7d/0x12e0 kernel/signal.c:2793 arch_do_signal_or_restart+0xbf/0x10f0 arch/x86/kernel/signal.c:805 handle_signal_work kernel/entry/common.c:145 [inline] exit_to_user_mode_loop+0xa2/0xe0 kernel/entry/common.c:169 exit_to_user_mode_prepare kernel/entry/common.c:199 [inline] syscall_exit_to_user_mode+0x68/0x90 kernel/entry/common.c:274 ret_from_fork+0x15/0x30 arch/x86/entry/entry_64.S:291 RIP: 0033:0x7f84fb3e0189 Code: Unable to access opcode bytes at RIP 0x7f84fb3e015f. RSP: 002b:00007f84f99d21c0 EFLAGS: 00000206 ORIG_RAX: 00000000000001b3 RAX: 0000000000000000 RBX: 00007f84fb362590 RCX: 00007f84fb3e0189 RDX: 00007f84fb362590 RSI: 0000000000000058 RDI: 00007ffe4432a020 RBP: 00007f84f99d26c0 R08: 00007f84f99d26c0 R09: 00007ffe4432a107 R10: 0000000000000008 R11: 0000000000000206 R12: ffffffffffffffa8 R13: 000000000000000b R14: 00007ffe4432a020 R15: 00007ffe4432a108 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 27683 Comm: syz.2.16412 Tainted: G W 5.10.238-syzkaller-00282-gd76d4cd0623a #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/29/2025 RIP: 0010:native_halt arch/x86/include/asm/irqflags.h:66 [inline] RIP: 0010:halt arch/x86/include/asm/irqflags.h:112 [inline] RIP: 0010:kvm_wait+0xb2/0x120 arch/x86/kernel/kvm.c:921 Code: c1 e8 03 42 0f b6 04 30 84 c0 75 6d 0f b6 07 40 38 f0 75 26 41 f7 c4 00 02 00 00 75 0f 0f 1f 44 00 00 0f 00 2d 3f 9d 98 03 f4 0e 0f 1f 44 00 00 0f 00 2d 30 9d 98 03 fb f4 4c 89 64 24 18 ff RSP: 0018:ffffc90000170280 EFLAGS: 00000046 RAX: 0000000000000003 RBX: ffff8881220be120 RCX: ffffffff814b175a RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffff8881220be120 RBP: ffffc90000170330 R08: dffffc0000000000 R09: ffffed1024417c25 R10: ffffed1024417c25 R11: 1ffff11024417c24 R12: 0000000000000046 R13: 1ffff11024417c24 R14: dffffc0000000000 R15: 1ffff9200002e054 FS: 00007fe2813f86c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffff8a50fe88 CR3: 00000001095c9000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000200000000300 DR3: 0000200000000300 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: pv_wait arch/x86/include/asm/paravirt.h:564 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x714/0xb70 kernel/locking/qspinlock.c:508 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:554 [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_flags include/linux/spinlock.h:195 [inline] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:119 [inline] _raw_spin_lock_irqsave+0x108/0x110 kernel/locking/spinlock.c:159 trie_delete_elem+0x95/0x710 kernel/bpf/lpm_trie.c:465 bpf_prog_3d1485d3268e5ad0+0x40/0x900 bpf_dispatcher_nop_func include/linux/bpf.h:669 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2061 [inline] bpf_trace_run3+0x14a/0x230 kernel/trace/bpf_trace.c:2099 __bpf_trace_timer_start+0x2b/0x40 include/trace/events/timer.h:52 trace_timer_start include/trace/events/timer.h:52 [inline] enqueue_timer+0x337/0x480 kernel/time/timer.c:592 __mod_timer+0x79f/0xb30 kernel/time/timer.c:-1 add_timer+0x68/0x80 kernel/time/timer.c:1165 __queue_delayed_work+0x173/0x200 kernel/workqueue.c:1683 queue_delayed_work_on+0xde/0x130 kernel/workqueue.c:1708 queue_delayed_work include/linux/workqueue.h:530 [inline] schedule_delayed_work include/linux/workqueue.h:634 [inline] kvfree_call_rcu+0x417/0x620 kernel/rcu/tree.c:3564 trie_delete_elem+0x57a/0x710 kernel/bpf/lpm_trie.c:-1 bpf_prog_3d1485d3268e5ad0+0x40/0x900 bpf_dispatcher_nop_func include/linux/bpf.h:669 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2061 [inline] bpf_trace_run3+0x14a/0x230 kernel/trace/bpf_trace.c:2099 __bpf_trace_timer_start+0x2b/0x40 include/trace/events/timer.h:52 trace_timer_start include/trace/events/timer.h:52 [inline] enqueue_timer+0x337/0x480 kernel/time/timer.c:592 __mod_timer+0x79f/0xb30 kernel/time/timer.c:-1 mod_timer+0x1f/0x30 kernel/time/timer.c:1119 tcp_orphan_update+0x18d/0x1c0 net/ipv4/tcp.c:2525 call_timer_fn+0x38/0x290 kernel/time/timer.c:1450 expire_timers kernel/time/timer.c:1495 [inline] __run_timers+0x639/0x9a0 kernel/time/timer.c:1789 run_timer_softirq+0xb8/0xf0 kernel/time/timer.c:1804 __do_softirq+0x255/0x563 kernel/softirq.c:309 asm_call_irq_on_stack+0xf/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0x60/0x80 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:405 [inline] __irq_exit_rcu+0x128/0x150 kernel/softirq.c:435 irq_exit_rcu+0x9/0x10 kernel/softirq.c:447 sysvec_apic_timer_interrupt+0xbf/0xe0 arch/x86/kernel/apic/apic.c:1106 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:635 RIP: 0010:update_stack_state+0xd/0x480 arch/x86/kernel/unwind_frame.c:188 Code: e8 08 db 6e 00 e9 66 fe ff ff 0f 1f 00 55 48 89 e5 48 8b 07 5d c3 0f 1f 80 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 <48> 81 ec 98 00 00 00 49 89 f7 48 89 fb 49 bd 00 00 00 00 00 fc ff RSP: 0018:ffffc9000161f4d0 EFLAGS: 00000246 RAX: ffffc9000161fcb0 RBX: ffffc9000161f588 RCX: 000000000161f501 RDX: dffffc0000000000 RSI: ffffc9000161fcb0 RDI: ffffc9000161f588 RBP: ffffc9000161f4f8 R08: ffffc9000161f650 R09: ffffc9000161f648 R10: 0000000000000004 R11: 1ffff920002c3eb1 R12: 0000000000000000 R13: 1ffff920002c3ebc R14: ffffc9000161f5e0 R15: ffffc9000161fc78 unwind_next_frame+0x3d5/0x700 arch/x86/kernel/unwind_frame.c:305 arch_stack_walk+0x108/0x140 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x98/0xe0 kernel/stacktrace.c:121 save_stack+0x95/0x1f0 mm/page_owner.c:146 __set_page_owner+0x3b/0x2a0 mm/page_owner.c:219 set_page_owner include/linux/page_owner.h:35 [inline] post_alloc_hook mm/page_alloc.c:2456 [inline] prep_new_page+0x179/0x180 mm/page_alloc.c:2462 get_page_from_freelist+0x2235/0x23d0 mm/page_alloc.c:4254 __alloc_pages_nodemask+0x268/0x5f0 mm/page_alloc.c:5357 __vmalloc_area_node mm/vmalloc.c:-1 [inline] __vmalloc_node_range+0x353/0x780 mm/vmalloc.c:2623 __bpf_map_area_alloc kernel/bpf/syscall.c:320 [inline] bpf_map_area_alloc+0xd5/0xe0 kernel/bpf/syscall.c:327 reuseport_array_alloc+0x16e/0x260 kernel/bpf/reuseport_array.c:169 find_and_alloc_map kernel/bpf/syscall.c:125 [inline] map_create+0x441/0x2190 kernel/bpf/syscall.c:842 __do_sys_bpf kernel/bpf/syscall.c:4417 [inline] __se_sys_bpf+0x203/0x680 kernel/bpf/syscall.c:4391 __x64_sys_bpf+0x7b/0x90 kernel/bpf/syscall.c:4391 do_syscall_64+0x31/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x61/0xcb RIP: 0033:0x7fe282d8f929 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:00007fe2813f8038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007fe282fb6fa0 RCX: 00007fe282d8f929 RDX: 0000000000000050 RSI: 00002000000010c0 RDI: 0000000000000000 RBP: 00007fe282e11b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fe282fb6fa0 R15: 00007ffe0d2f8598