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3e864bf2a3
The cleaner shader sysfs path allocates a 16-dword (64 byte) IB but incorrectly fills (align_mask + 1) dwords. On GFX rings align_mask is 0xff, so the loop wrote 256 dwords into a 64-byte buffer, causing a kernel page fault. The IB only needs to be a minimal NOP shell to schedule the job; the cleaner shader itself is emitted on the ring via emit_cleaner_shader(). Fill 16 dwords to match the allocation. v2: Use ib_size_dw variable (Lijo) Fixes:d361ad5d2f("drm/amdgpu: Add sysfs interface for running cleaner shader") Suggested-by: Lijo Lazar <lijo.lazar@amd.com> Signed-off-by: Asad Kamal <asad.kamal@amd.com> Reviewed-by: Lijo Lazar <lijo.lazar@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com> (cherry picked from commitbf21af331e) CC: stable@vger.kernel.org
2757 lines
77 KiB
2757 lines
77 KiB