From e47cb828eb3fca3e8999a0b9aa053dda18552071 Mon Sep 17 00:00:00 2001
From: Wei Lu <wei.lu2@amd.com>
Date: Wed, 11 Jul 2018 22:32:47 -0400
Subject: [PATCH] drm/amdkfd: Fix error codes in kfd_get_process
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Git-commit: e47cb828eb3fca3e8999a0b9aa053dda18552071
Patch-mainline: v4.19-rc1
References: bsc#1051510
Return ERR_PTR(-EINVAL) if kfd_get_process fails to find the process.
This fixes kernel oopses when a child process calls KFD ioctls with
a file descriptor inherited from the parent process.
Signed-off-by: Wei Lu <wei.lu2@amd.com>
Reviewed-by: Felix Kuehling <Felix.Kuehling@amd.com>
Signed-off-by: Felix Kuehling <Felix.Kuehling@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Oded Gabbay <oded.gabbay@gmail.com>
Acked-by: Takashi Iwai <tiwai@suse.de>
---
drivers/gpu/drm/amd/amdkfd/kfd_process.c | 2 ++
1 file changed, 2 insertions(+)
--- a/drivers/gpu/drm/amd/amdkfd/kfd_process.c
+++ b/drivers/gpu/drm/amd/amdkfd/kfd_process.c
@@ -244,6 +244,8 @@ struct kfd_process *kfd_get_process(cons
return ERR_PTR(-EINVAL);
process = find_process(thread);
+ if (!process)
+ return ERR_PTR(-EINVAL);
return process;
}