diff options
| author | Dan Carpenter | 2023-06-06 19:29:51 -0400 |
|---|---|---|
| committer | Alex Deucher | 2023-06-09 12:43:00 -0400 |
| commit | 8be295046748432c53a2dee39c469f63c60b0ec3 (patch) | |
| tree | 5dd23a791e0826006e0b180c4cf77f9454f08b6b | |
| parent | 33e82119cfb2a957f250f92a1e4c4db2b06400db (diff) | |
drm/amdkfd: potential error pointer dereference in ioctl
The "target" either comes from kfd_create_process() which returns error
pointers on error or kfd_lookup_process_by_pid() which returns NULL on
error. So we need to check for both types of errors.
Fixes: 0ab2d7532b05 ("drm/amdkfd: prepare per-process debug enable and disable")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Jonathan Kim <jonathan.kim@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
| -rw-r--r-- | drivers/gpu/drm/amd/amdkfd/kfd_chardev.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c index cce2abe12e1b..d655c5bc951f 100644 --- a/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c +++ b/drivers/gpu/drm/amd/amdkfd/kfd_chardev.c @@ -2920,9 +2920,9 @@ static int kfd_ioctl_set_debug_trap(struct file *filep, struct kfd_process *p, v target = kfd_lookup_process_by_pid(pid); } - if (!target) { + if (IS_ERR_OR_NULL(target)) { pr_debug("Cannot find process PID %i to debug\n", args->pid); - r = -ESRCH; + r = target ? PTR_ERR(target) : -ESRCH; goto out; } |