------------[ cut here ]------------
cpuhp_invoke_callback_range(false, cpu, st, prev_state)
WARNING: kernel/cpu.c:1035 at cpuhp_up_callbacks kernel/cpu.c:1035 [inline], CPU#0: syz.1.1795/14449
WARNING: kernel/cpu.c:1035 at _cpu_up+0x606/0x960 kernel/cpu.c:1674, CPU#0: syz.1.1795/14449
Modules linked in:
CPU: 0 UID: 0 PID: 14449 Comm: syz.1.1795 Tainted: G     U       L      syzkaller #0 PREEMPT(full) 
Tainted: [U]=USER, [L]=SOFTLOCKUP
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
RIP: 0010:cpuhp_up_callbacks kernel/cpu.c:1035 [inline]
RIP: 0010:_cpu_up+0x606/0x960 kernel/cpu.c:1674
Code: ff 45 31 c0 48 89 da 89 ee 44 89 f9 e8 63 9b ff ff 31 ff 89 c3 89 c6 e8 d8 9a 40 00 85 db 0f 84 0a fe ff ff e8 1b a0 40 00 90 <0f> 0b 90 e9 fc fd ff ff e8 0d a0 40 00 89 ee bf 07 00 00 00 e8 b1
RSP: 0018:ffffc90004ed7ac0 EFLAGS: 00010283
RAX: 000000000000130b RBX: 00000000fffffff5 RCX: ffffc90005c83000
RDX: 0000000000080000 RSI: ffffffff81c77845 RDI: ffff888033a91e80
RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000
R10: 00000000fffffff5 R11: 0000000000000000 R12: 0000000000000001
R13: 00000000fffffff4 R14: 0000000000000001 R15: 0000000000000000
FS:  00007f10991046c0(0000) GS:ffff88812434a000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f81a63ece20 CR3: 0000000032eee000 CR4: 00000000003526f0
Call Trace:
 <TASK>
 cpu_up+0x1ba/0x230 kernel/cpu.c:1706
 cpu_subsys_online+0x84/0x190 drivers/base/cpu.c:61
 device_online+0x114/0x1c0 drivers/base/core.c:4225
 online_store+0x145/0x180 drivers/base/core.c:2809
 dev_attr_store+0x58/0x80 drivers/base/core.c:2437
 sysfs_kf_write+0xf2/0x150 fs/sysfs/file.c:142
 kernfs_fop_write_iter+0x3e0/0x5f0 fs/kernfs/file.c:352
 new_sync_write fs/read_write.c:595 [inline]
 vfs_write+0x6ac/0x1070 fs/read_write.c:688
 ksys_write+0x12a/0x250 fs/read_write.c:740
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0x106/0xf80 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f109819c799
Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f1099104028 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007f1098415fa0 RCX: 00007f109819c799
RDX: 000000000000fdef RSI: 0000000000000000 RDI: 0000000000000003
RBP: 00007f1098232c99 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007f1098416038 R14: 00007f1098415fa0 R15: 00007ffcdeebf638
 </TASK>