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drm/amdkfd: Fix memory leak in create_process failure

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commit 18921b205012568b45760753ad3146ddb9e2d4e2 upstream.

Fix memory leak due to a leaked mmget reference on an error handling
code path that is triggered when attempting to create KFD processes
while a GPU reset is in progress.

Fixes: 0ab2d7532b05 ("drm/amdkfd: prepare per-process debug enable and disable")
CC: Xiaogang Chen <xiaogang.chen@amd.com>
Signed-off-by: Felix Kuehling <felix.kuehling@amd.com>
Tested-by: Harish Kasiviswanthan <Harish.Kasiviswanthan@amd.com>
Reviewed-by: Mukul Joshi <mukul.joshi@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Felix Kuehling 2024-04-10 15:52:10 -04:00 committed by Greg Kroah-Hartman
parent ef13eeca7c
commit aa02d43367
1 changed files with 2 additions and 2 deletions
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4
drivers/gpu/drm/amd/amdkfd/kfd_process.c
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@ -818,9 +818,9 @@ struct kfd_process *kfd_create_process(struct task_struct *thread)
mutex_lock(&kfd_processes_mutex);
if (kfd_is_locked()) {
mutex_unlock(&kfd_processes_mutex);
pr_debug("KFD is locked! Cannot create process");
return ERR_PTR(-EINVAL);
process = ERR_PTR(-EINVAL);
goto out;
}
/* A prior open of /dev/kfd could have already created the process. */