RBP: 00007f64016e9e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f64018ae128 R14: 00007f64018ae090 R15: 00007ffeaa5d2b88
 </TASK>
watchdog: BUG: soft lockup - CPU#1 stuck for 226s! [syz.2.2483:9440]
Modules linked in:
CPU: 1 PID: 9440 Comm: syz.2.2483 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
RIP: 0010:csd_lock_wait kernel/smp.c:440 [inline]
RIP: 0010:smp_call_function_many_cond+0x8c3/0x9f0 kernel/smp.c:969
Code: 84 c0 0f 85 9d 00 00 00 41 8b 1f 89 de 83 e6 01 31 ff e8 90 37 0a 00 83 e3 01 48 8b 5c 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
RSP: 0018:ffffc9000830ece0 EFLAGS: 00000293
RAX: ffffffff815e8b05 RBX: ffff8881f7138e80 RCX: ffff88810d098000
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffffc9000830ede8 R08: dffffc0000000000 R09: ffffc9000830ec20
R10: fffff52001061d86 R11: 1ffff92001061d84 R12: 1ffff1103ee271d0
R13: 1ffff1103ee07af9 R14: 0000000000000000 R15: ffff8881f703d7c8
FS:  00007f64000ae6c0(0000) GS:ffff8881f7100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000001000 CR3: 00000001393a8000 CR4: 00000000003506a0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <TASK>
 on_each_cpu_cond_mask+0x43/0x80 kernel/smp.c:1135
 on_each_cpu include/linux/smp.h:71 [inline]
 flush_tlb_kernel_range+0x43/0x240 arch/x86/mm/tlb.c:1074
 __purge_vmap_area_lazy+0x1ad/0x1840 mm/vmalloc.c:1702
 _vm_unmap_aliases+0x2fd/0x380 mm/vmalloc.c:2126
 vm_unmap_aliases+0x19/0x20 mm/vmalloc.c:2149
 change_page_attr_set_clr+0x311/0xc10 arch/x86/mm/pat/set_memory.c:1740
 change_page_attr_clear arch/x86/mm/pat/set_memory.c:1797 [inline]
 set_memory_ro+0x89/0xd0 arch/x86/mm/pat/set_memory.c:1943
 bpf_jit_binary_lock_ro include/linux/filter.h:899 [inline]
 bpf_int_jit_compile+0xc493/0xcc60 arch/x86/net/bpf_jit_comp.c:2478
 jit_subprogs kernel/bpf/verifier.c:12802 [inline]
 fixup_call_args kernel/bpf/verifier.c:12895 [inline]
 bpf_check+0xd41b/0xf280 kernel/bpf/verifier.c:14149
 bpf_prog_load+0x1042/0x1550 kernel/bpf/syscall.c:2328
 __sys_bpf+0x4c3/0x730 kernel/bpf/syscall.c:4633
 __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: 0033:0x7f6401666c29
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:00007f64000ae038 EFLAGS: 00000246 ORIG_RAX: 0000000000000141
RAX: ffffffffffffffda RBX: 00007f64018ae090 RCX: 00007f6401666c29
RDX: 0000000000000078 RSI: 0000200000000440 RDI: 0000000000000005
RBP: 00007f64016e9e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f64018ae128 R14: 00007f64018ae090 R15: 00007ffeaa5d2b88
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 9449 Comm: syz.4.2485 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/18/2025
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 e5 91 d6 03 f4 <eb> 9a fa 48 89 f8 48 c1 e8 03 42 0f b6 04 30 84 c0 75 3f 0f b6 07
RSP: 0018:ffffc90000007860 EFLAGS: 00000046
RAX: 0000000000000003 RBX: ffff88813d2c9cac RCX: ffffffff814f4259
RDX: 0000000000000001 RSI: 0000000000000003 RDI: ffff88813d2c9cac
RBP: ffffc900000078f0 R08: dffffc0000000000 R09: ffffed1027a59396
R10: ffffed1027a59396 R11: 1ffff11027a59395 R12: 1ffff1103ee00001
R13: ffff8881f7038ad4 R14: dffffc0000000000 R15: 1ffff92000000f0c
FS:  00007f7b85e3c6c0(0000) GS:ffff8881f7000000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7b85e1b0e8 CR3: 000000013d2e5000 CR4: 00000000003506b0
DR0: 0000000000000000 DR1: 0000200000000300 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600
Call Trace:
 <IRQ>
 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:187 [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
 wake_up_worker kernel/workqueue.c:866 [inline]
 insert_work+0x287/0x310 kernel/workqueue.c:1388
 __queue_work+0x8e5/0xc60 kernel/workqueue.c:1539
 delayed_work_timer_fn+0x61/0x80 kernel/workqueue.c:1664
 call_timer_fn+0x38/0x290 kernel/time/timer.c:1457
 expire_timers kernel/time/timer.c:1497 [inline]
 __run_timers+0x667/0x9a0 kernel/time/timer.c:1773
 run_timer_softirq+0x6a/0xf0 kernel/time/timer.c:1786
 handle_softirqs+0x250/0x560 kernel/softirq.c:583
 __do_softirq kernel/softirq.c:621 [inline]
 invoke_softirq kernel/softirq.c:443 [inline]
 __irq_exit_rcu+0x52/0xf0 kernel/softirq.c:670
 irq_exit_rcu+0x9/0x10 kernel/softirq.c:682
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
 sysvec_apic_timer_interrupt+0xa9/0xc0 arch/x86/kernel/apic/apic.c:1108
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1b/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:arch_atomic_inc include/linux/instrumented.h:101 [inline]
RIP: 0010:atomic_inc include/linux/atomic/atomic-instrumented.h:182 [inline]
RIP: 0010:kernfs_get fs/kernfs/dir.c:505 [inline]
RIP: 0010:kernfs_new_node+0x1b2/0x260 fs/kernfs/dir.c:672
Code: 00 00 00 44 8b 3b 31 ff 44 89 fe e8 18 36 9a ff 45 85 ff 74 5e e8 5e 32 9a ff 48 89 df be 04 00 00 00 e8 31 b0 d8 ff f0 ff 03 <eb> 0c e8 47 32 9a ff eb 2e e8 40 32 9a ff 4d 89 f7 49 83 c7 08 4c
RSP: 0018:ffffc90009adf318 EFLAGS: 00000206
RAX: ffffffff81ce8c01 RBX: ffff88812c97e190 RCX: ffffffff81ce8c5f
RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff88812c97e190
RBP: ffffc90009adf358 R08: dffffc0000000000 R09: ffffed102592fc33
R10: ffffed102592fc33 R11: 1ffff1102592fc32 R12: ffff8881057cf820
R13: 0000000000000002 R14: ffff8881162b9c80 R15: 000000000000001a
 __kernfs_create_file+0x4e/0x270 fs/kernfs/file.c:987
 sysfs_add_file_mode_ns+0x29a/0x350 fs/sysfs/file.c:317
 create_files fs/sysfs/group.c:64 [inline]
 internal_create_group+0x489/0xcf0 fs/sysfs/group.c:149
 internal_create_groups fs/sysfs/group.c:189 [inline]
 sysfs_create_groups+0x58/0x120 fs/sysfs/group.c:215
 device_add_groups drivers/base/core.c:2501 [inline]
 device_add_attrs+0x8c/0x700 drivers/base/core.c:2649
 device_add+0x5e3/0xed0 drivers/base/core.c:3373
 netdev_register_kobject+0x179/0x320 net/core/net-sysfs.c:2014
 register_netdevice+0xdfa/0x13a0 net/core/dev.c:10405
 register_netdev+0x3e/0x50 net/core/dev.c:10529
 sit_init_net+0x246/0x480 net/ipv6/sit.c:1925
 ops_init+0x1ba/0x4a0 net/core/net_namespace.c:138
 setup_net+0x344/0xa90 net/core/net_namespace.c:332
 copy_net_ns+0x355/0x5c0 net/core/net_namespace.c:476
 create_new_namespaces+0x3a2/0x660 kernel/nsproxy.c:110
 copy_namespaces+0x1d1/0x220 kernel/nsproxy.c:178
 copy_process+0x118d/0x3210 kernel/fork.c:2351
 kernel_clone+0x23f/0x940 kernel/fork.c:2737
 __do_sys_clone kernel/fork.c:2863 [inline]
 __se_sys_clone kernel/fork.c:2847 [inline]
 __x64_sys_clone+0x176/0x1d0 kernel/fork.c:2847
 x64_sys_call+0x41f/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:57
 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: 0033:0x7f7b873f4c29
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:00007f7b85e3bfe8 EFLAGS: 00000202 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00007f7b8763c090 RCX: 00007f7b873f4c29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000600e7080
RBP: 00007f7b87477e41 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 00007f7b8763c128 R14: 00007f7b8763c090 R15: 00007ffc9f894528
 </TASK>