diff options
| author | leixiang <leixiang@kylinos.cn> | 2026-07-06 17:59:06 +0800 |
|---|---|---|
| committer | Sean Christopherson <seanjc@google.com> | 2026-07-08 13:42:51 -0700 |
| commit | db3a46e200df2f65aec7d1f0a076c99bc8484ea0 (patch) | |
| tree | 86a455469547cc97315c25e74899c5ddf6894b03 | |
| parent | a204badd8432f93b7e862e7dac6db0fe3d65f370 (diff) | |
KVM: Remove kvm_debugfs_dir on kvm_init() error paths
kvm_init_debug() runs before several steps that can fail
(kvm_vfio_ops_init(), kvm_gmem_init(), kvm_init_virtualization() and
misc_register()), but none of the corresponding error labels remove the
"kvm" debugfs directory. Any failure after kvm_init_debug() therefore
leaks the directory and its stat files for the lifetime of the boot.
kvm_exit() already calls debugfs_remove_recursive(kvm_debugfs_dir); add
the same at the err_vfio label, whose fall-through covers every path
taken after kvm_init_debug().
Fixes: 2b0128127373 ("KVM: Register /dev/kvm as the _very_ last thing during initialization")
Signed-off-by: leixiang <leixiang@kylinos.cn>
Link: https://patch.msgid.link/20260706095910.39798-1-leixiang@kylinos.cn
Signed-off-by: Sean Christopherson <seanjc@google.com>
| -rw-r--r-- | virt/kvm/kvm_main.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index e44c20c04961..d4420ebfd972 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -6559,6 +6559,7 @@ err_virt: err_gmem: kvm_vfio_ops_exit(); err_vfio: + debugfs_remove_recursive(kvm_debugfs_dir); kvm_async_pf_deinit(); err_async_pf: kvm_irqfd_exit(); |