linux-kernel - [PATCH v3 0/3] Fix and rework of rpmsg_eptdev

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Message-Id: <20251113153909.3789-1-dawei.li@linux.dev>
Date: Thu, 13 Nov 2025 23:39:06 +0800
From: Dawei Li <dawei.li@...ux.dev>
To: andersson@...nel.org,
	mathieu.poirier@...aro.org
Cc: linux-remoteproc@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	dawei.li@...ux.dev,
	set_pte_at@...look.com
Subject: [PATCH v3 0/3] Fix and rework of rpmsg_eptdev_add()

Hi,

This series fixes bug introduced by anonymous inode eptdev code and
rework the exception handing paths. 

And it tries to address a long suffering issue which may be backported
to stable kernels. 

Change for v3:
- Split it into 3 patches:
  1/3: Fix legacy bug.
  2/3: Fix new bug introduced by anonymous eptdev code.
  3/3: Rework error handling code.
Link to v2:
https://lore.kernel.org/all/20251112150108.49017-1-dawei.li@linux.dev/

Change for v2:
- Add put_device() when __rpmsg_eptdev_open() failed.
Link to v1:
https://lore.kernel.org/all/20251112142813.33708-1-dawei.li@linux.dev/

Dawei Li (3):
  rpmsg: char: Remove put_device() in rpmsg_eptdev_add()
  rpmsg: char: Fix UAF and memory leak in
    rpmsg_anonymous_eptdev_create()
  rpmsg: char: Rework exception handling of rpmsg_eptdev_add()

 drivers/rpmsg/rpmsg_char.c | 61 +++++++++++++++++++++-----------------
 1 file changed, 34 insertions(+), 27 deletions(-)

-- 
2.25.1