Reviewed-by: Philip Yang <philip.yang@xxxxxxx> for the series.
On 2021-02-12 1:40 a.m., Felix Kuehling
wrote:
If init_cwsr_apu fails, we currently leave the kfd_process structure in place anyway. The next kfd_open will then succeed, using the existing kfd_process structure. Fix that by cleaning up the kfd_process after a failure in init_cwsr_apu. Signed-off-by: Felix Kuehling <Felix.Kuehling@xxxxxxx> --- drivers/gpu/drm/amd/amdkfd/kfd_process.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_process.c b/drivers/gpu/drm/amd/amdkfd/kfd_process.c index 145cd0a17d50..a4d7682289bb 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c @@ -775,10 +775,8 @@ struct kfd_process *kfd_create_process(struct file *filep) goto out; ret = kfd_process_init_cwsr_apu(process, filep); - if (ret) { - process = ERR_PTR(ret); - goto out; - } + if (ret) + goto out_destroy; if (!procfs.kobj) goto out; @@ -826,6 +824,14 @@ struct kfd_process *kfd_create_process(struct file *filep) mutex_unlock(&kfd_processes_mutex); return process; + +out_destroy: + hash_del_rcu(&process->kfd_processes); + mutex_unlock(&kfd_processes_mutex); + synchronize_srcu(&kfd_processes_srcu); + /* kfd_process_free_notifier will trigger the cleanup */ + mmu_notifier_put(&process->mmu_notifier); + return ERR_PTR(ret); } struct kfd_process *kfd_get_process(const struct task_struct *thread)
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