Modules linked in:
CPU: 1 PID: 8358 Comm: syz-executor.1 Not tainted 5.18.0-syzkaller-16253-g2f3064574275 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
=====================================================
BUG: KMSAN: uninit-value in kallsyms_lookup_buildid+0x1f2/0xb10
 kallsyms_lookup_buildid+0x1f2/0xb10
 __sprint_symbol+0x16a/0x650
 sprint_symbol+0x80/0x90
 symbol_string+0x44a/0x6e0
 pointer+0x135a/0x1f70
 vsnprintf+0x198c/0x3460
 vprintk_store+0x52e/0x2110
 vprintk_emit+0x276/0xa70
 vprintk_default+0x8a/0xa0
 vprintk+0x163/0x180
 _printk+0x191/0x1d3
 show_iret_regs+0x139/0x2f0
 __show_regs+0x71/0x1040
 show_regs+0xc0/0x160
 __warn+0x3c2/0x730
 report_bug+0x8eb/0xae0
 handle_bug+0x41/0x70
 exc_invalid_op+0x1b/0x50
 asm_exc_invalid_op+0x12/0x20
 free_nested+0x116/0x9e0
 nested_vmx_free_vcpu+0x127/0x160
 vmx_vcpu_free+0x2aa/0x590
 kvm_arch_vcpu_destroy+0x8e/0x410
 kvm_destroy_vcpus+0x135/0x380
 kvm_arch_destroy_vm+0x5e1/0x6f0
 kvm_put_kvm+0x118c/0x2470
 kvm_vcpu_release+0x69/0xa0
 __fput+0x7c8/0x10a0
 ____fput+0x3b/0x50
 task_work_run+0x157/0x290
 exit_to_user_mode_loop+0x31e/0x3b0
 exit_to_user_mode_prepare+0x195/0x240
 syscall_exit_to_user_mode+0x23/0x40
 do_syscall_64+0x49/0xb0
 entry_SYSCALL_64_after_hwframe+0x44/0xae

Local variable ewq created at:
 userfaultfd_unmap_complete+0x58/0x580
 __vm_munmap+0x2a2/0x3c0

CPU: 1 PID: 8358 Comm: syz-executor.1 Not tainted 5.18.0-syzkaller-16253-g2f3064574275 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
=====================================================