drm/panthor: Fix potential memleak of vma structure

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[ Upstream commit 4492d54d59 ]

This commit addresses a memleak issue of panthor_vma (or drm_gpuva)
structure in Panthor driver, that can happen if the GPU page table
update operation to map the pages fail.
The issue is very unlikely to occur in practice.

v2: Add panthor_vm_op_ctx_return_vma() helper (Boris)

v3: Add WARN_ON_ONCE (Boris)

Fixes: 647810ec24 ("drm/panthor: Add the MMU/VM logical block")
Signed-off-by: Akash Goel <akash.goel@arm.com>
Reviewed-by: Boris Brezillon <boris.brezillon@collabora.com>
Reviewed-by: Steven Price <steven.price@arm.com>
Signed-off-by: Steven Price <steven.price@arm.com>
Link: https://patch.msgid.link/20251021081042.1377406-1-akash.goel@arm.com
Signed-off-by: Sasha Levin <sashal@kernel.org>

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This commit is contained in:

Akash Goel 2025-10-21 09:10:42 +01:00 • committed by Greg Kroah-Hartman

parent 6e17555728

commit 98ae4025de

1 changed files with 17 additions and 1 deletions

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drivers/gpu/drm/panthor/panthor_mmu.c

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