linux-kernel - [PATCH v3 0/4] Add missing fixes to FastRPC driver

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Message-ID: <20250807100420.1163967-1-quic_lxu5@quicinc.com>
Date: Thu, 7 Aug 2025 15:34:16 +0530
From: Ling Xu <quic_lxu5@...cinc.com>
To: <srini@...nel.org>, <amahesh@....qualcomm.com>, <arnd@...db.de>,
        <gregkh@...uxfoundation.org>, <sumit.semwal@...aro.org>,
        <christian.koenig@....com>, <thierry.escande@...aro.org>,
        <quic_vgattupa@...cinc.com>
CC: <quic_kuiw@...cinc.com>, <ekansh.gupta@....qualcomm.com>,
        <dri-devel@...ts.freedesktop.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-media@...r.kernel.org>, <linaro-mm-sig@...ts.linaro.org>,
        <linux-kernel@...r.kernel.org>, Ling Xu <quic_lxu5@...cinc.com>
Subject: [PATCH v3 0/4] Add missing fixes to FastRPC driver

This patch series adds the listed bug fixes that have been missing
in upstream fastRPC driver.
- Store actual size of map and check it against the user passed size.
- Consider map buf for map lookup.
- Fix possible map leak in fastrpc_put_args.
- Skip refcount increment for DMA handles.
Patch [v2]: https://lore.kernel.org/linux-arm-msm/20250806115114.688814-1-quic_lxu5@quicinc.com/

Changes in v3:
  - Remove the unused line.
Changes in v2:
  - Fix possible map leak in fastrpc_put_args.
  - Remove take_ref argument.

Ling Xu (4):
  misc: fastrpc: Save actual DMA size in fastrpc_map structure
  misc: fastrpc: Fix fastrpc_map_lookup operation
  misc: fastrpc: fix possible map leak in fastrpc_put_args
  misc: fastrpc: Skip reference for DMA handles

 drivers/misc/fastrpc.c | 89 +++++++++++++++++++++++++++---------------
 1 file changed, 58 insertions(+), 31 deletions(-)

-- 
2.34.1