watchdog: BUG: soft lockup - CPU#0 stuck for 225s! [syz.2.2073:8069] Modules linked in: CPU: 0 PID: 8069 Comm: syz.2.2073 Not tainted 6.1.115-syzkaller-00045-g997d1e6f69f1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 RIP: 0010:csd_lock_wait kernel/smp.c:453 [inline] RIP: 0010:smp_call_function_many_cond+0x84f/0x930 kernel/smp.c:998 Code: 3e 44 89 fe 83 e6 01 31 ff e8 bd 9b 09 00 41 83 e7 01 49 bf 00 00 00 00 00 fc ff df 75 0a e8 f8 97 09 00 e9 2f ff ff ff f3 90 <42> 0f b6 04 3b 84 c0 75 14 41 f7 06 01 00 00 00 0f 84 12 ff ff ff RSP: 0018:ffffc900011a75c0 EFLAGS: 00000246 RAX: ffffffff816beeda RBX: 1ffff1103ede7885 RCX: 0000000000080000 RDX: ffffc900022cd000 RSI: 000000000007ffff RDI: 0000000000080000 RBP: ffffc900011a76d8 R08: ffffffff816beea3 R09: ffffed103edc71fb R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000001 R13: 0000000800000000 R14: ffff8881f6f3c428 R15: dffffc0000000000 FS: 00007f59f99016c0(0000) GS:ffff8881f6e00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000100000000 CR3: 000000011b31a000 CR4: 00000000003506b0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: on_each_cpu_cond_mask+0x40/0x80 kernel/smp.c:1166 on_each_cpu include/linux/smp.h:71 [inline] text_poke_sync arch/x86/kernel/alternative.c:1334 [inline] text_poke_bp_batch+0x1e9/0x730 arch/x86/kernel/alternative.c:1534 text_poke_flush arch/x86/kernel/alternative.c:1725 [inline] text_poke_finish+0x1a/0x30 arch/x86/kernel/alternative.c:1732 arch_jump_label_transform_apply+0x15/0x30 arch/x86/kernel/jump_label.c:146 __jump_label_update+0x36a/0x380 kernel/jump_label.c:451 jump_label_update+0x3af/0x450 kernel/jump_label.c:797 static_key_enable_cpuslocked+0x12f/0x250 kernel/jump_label.c:173 static_key_enable+0x1a/0x30 kernel/jump_label.c:186 tracepoint_add_func+0x8b2/0x940 kernel/tracepoint.c:361 tracepoint_probe_register_prio_may_exist+0x11c/0x180 kernel/tracepoint.c:482 tracepoint_probe_register_may_exist include/linux/tracepoint.h:52 [inline] __bpf_probe_register kernel/trace/bpf_trace.c:2336 [inline] bpf_probe_register+0x152/0x1e0 kernel/trace/bpf_trace.c:2342 bpf_raw_tp_link_attach+0x456/0x6b0 kernel/bpf/syscall.c:3367 bpf_raw_tracepoint_open+0x22d/0x4a0 kernel/bpf/syscall.c:3394 __sys_bpf+0x4f5/0x7f0 kernel/bpf/syscall.c:5044 __do_sys_bpf kernel/bpf/syscall.c:5106 [inline] __se_sys_bpf kernel/bpf/syscall.c:5104 [inline] __x64_sys_bpf+0x7c/0x90 kernel/bpf/syscall.c:5104 x64_sys_call+0x87f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:322 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f59f8b7ff19 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:00007f59f9901058 EFLAGS: 00000246 ORIG_RAX: 0000000000000141 RAX: ffffffffffffffda RBX: 00007f59f8d45fa0 RCX: 00007f59f8b7ff19 RDX: 0000000000000010 RSI: 0000000020000040 RDI: 0000000000000011 RBP: 00007f59f8bf3986 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f59f8d45fa0 R15: 00007fff83a982f8 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 8004 Comm: syz.5.2055 Not tainted 6.1.115-syzkaller-00045-g997d1e6f69f1 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 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+0x117/0x180 arch/x86/kernel/kvm.c:1058 Code: 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b 74 24 1c 75 53 41 0f b6 45 00 44 38 f0 0f 85 63 ff ff ff 66 90 0f 00 2d 0a eb 50 04 f4 54 ff ff ff fa 4c 89 e8 48 c1 e8 03 42 0f b6 04 20 84 c0 44 8b RSP: 0018:ffffc90000ac6e40 EFLAGS: 00000046 RAX: 0000000000000003 RBX: 1ffff92000158dcc RCX: ffffffff8521b43c RDX: dffffc0000000000 RSI: 0000000000000003 RDI: ffff8881f6f279c0 RBP: ffffc90000ac6ef0 R08: dffffc0000000000 R09: ffffed103ede4f39 R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff8881f6f279c0 R14: 0000000000000003 R15: 1ffff92000158dd0 FS: 00007f4a1db406c0(0000) GS:ffff8881f6f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffdd4c7e82c CR3: 00000001374de000 CR4: 00000000003506a0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: pv_wait arch/x86/include/asm/paravirt.h:603 [inline] pv_wait_head_or_lock kernel/locking/qspinlock_paravirt.h:470 [inline] __pv_queued_spin_lock_slowpath+0x6de/0xda0 kernel/locking/qspinlock.c:511 pv_queued_spin_lock_slowpath arch/x86/include/asm/paravirt.h:591 [inline] queued_spin_lock_slowpath arch/x86/include/asm/qspinlock.h:51 [inline] queued_spin_lock include/asm-generic/qspinlock.h:114 [inline] do_raw_spin_lock include/linux/spinlock.h:187 [inline] __raw_spin_lock include/linux/spinlock_api_smp.h:134 [inline] _raw_spin_lock+0x139/0x1b0 kernel/locking/spinlock.c:154 krc_this_cpu_lock kernel/rcu/tree.c:3035 [inline] add_ptr_to_bulk_krc_lock kernel/rcu/tree.c:3355 [inline] kvfree_call_rcu+0x12d/0x800 kernel/rcu/tree.c:3446 trie_delete_elem+0x5a6/0x760 kernel/bpf/lpm_trie.c:532 bpf_prog_5186c38a4019a4cb+0x42/0x46 bpf_dispatcher_nop_func include/linux/bpf.h:987 [inline] __bpf_prog_run include/linux/filter.h:603 [inline] bpf_prog_run include/linux/filter.h:610 [inline] __bpf_trace_run kernel/trace/bpf_trace.c:2271 [inline] bpf_trace_run3+0x177/0x2e0 kernel/trace/bpf_trace.c:2311 __bpf_trace_timer_start+0x2b/0x40 include/trace/events/timer.h:53 trace_timer_start include/trace/events/timer.h:53 [inline] enqueue_timer+0x303/0x480 kernel/time/timer.c:615 internal_add_timer kernel/time/timer.c:640 [inline] __mod_timer+0x8d3/0xcf0 kernel/time/timer.c:1121 add_timer+0x68/0x80 kernel/time/timer.c:1218 __queue_delayed_work+0x16d/0x1f0 kernel/workqueue.c:1686 mod_delayed_work_on+0xee/0x190 kernel/workqueue.c:1749 mod_delayed_work include/linux/workqueue.h:540 [inline] schedule_delayed_monitor_work kernel/rcu/tree.c:3213 [inline] kvfree_call_rcu+0x5e3/0x800 kernel/rcu/tree.c:3472 drop_sysctl_table+0x311/0x450 fs/proc/proc_sysctl.c:1727 unregister_sysctl_table+0x76/0x120 fs/proc/proc_sysctl.c:1765 unregister_net_sysctl_table+0x15/0x20 net/sysctl_net.c:175 unix_sysctl_unregister+0x5e/0x90 net/unix/sysctl_net_unix.c:57 unix_net_exit+0x73/0xb0 net/unix/af_unix.c:3688 ops_exit_list net/core/net_namespace.c:172 [inline] setup_net+0x8fa/0xd60 net/core/net_namespace.c:358 copy_net_ns+0x35f/0x5b0 net/core/net_namespace.c:481 create_new_namespaces+0x416/0x670 kernel/nsproxy.c:110 copy_namespaces+0x1d1/0x220 kernel/nsproxy.c:178 copy_process+0x12e2/0x3530 kernel/fork.c:2370 kernel_clone+0x229/0x890 kernel/fork.c:2783 __do_sys_clone kernel/fork.c:2926 [inline] __se_sys_clone kernel/fork.c:2910 [inline] __x64_sys_clone+0x231/0x280 kernel/fork.c:2910 x64_sys_call+0x1b0/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:57 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f4a1cd7ff19 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:00007f4a1db40008 EFLAGS: 00000206 ORIG_RAX: 0000000000000038 RAX: ffffffffffffffda RBX: 00007f4a1cf46320 RCX: 00007f4a1cd7ff19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000640c7000 RBP: 00007f4a1cdf3986 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f4a1cf46320 R15: 00007ffe8aab7328