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| author | Ashutosh Dixit <ashutosh.dixit@intel.com> | 2025-12-11 22:18:48 -0800 |
|---|---|---|
| committer | Ashutosh Dixit <ashutosh.dixit@intel.com> | 2025-12-17 19:47:28 -0800 |
| commit | 97e16068d77a036908f69aba35486b21dee17a40 (patch) | |
| tree | 2f142023b1eb5736ad11e6062af538be11d780f4 /include/uapi | |
| parent | 487524c891d3cc21eb6d243c2885273c5b142b44 (diff) | |
drm/xe/oa: Move default oa unit assignment earlier during stream open
De-referencing param.oa_unit, when an OA unit id is not provided during
stream open, results in NPD below.
Oops: general protection fault, probably for non-canonical address...
KASAN: null-ptr-deref in range...
RIP: 0010:xe_oa_stream_open_ioctl+0x169/0x38a0
xe_observation_ioctl+0x19f/0x270
drm_ioctl_kernel+0x1f4/0x410
Fix this by moving default oa unit assignment before the dereference.
Reported-by: Peter Senna Tschudin <peter.senna@linux.intel.com>
Closes: https://gitlab.freedesktop.org/drm/xe/kernel/-/issues/6840
Fixes: c7e269aa565f ("drm/xe/oa: Allow exec_queue's to be specified only for OAG OA unit")
Signed-off-by: Ashutosh Dixit <ashutosh.dixit@intel.com>
Reviewed-by: Harish Chegondi <harish.chegondi@intel.com>
Link: https://patch.msgid.link/20251212061850.1565459-2-ashutosh.dixit@intel.com
Diffstat (limited to 'include/uapi')
0 files changed, 0 insertions, 0 deletions