Anna Schumaker caee6a68ff NFS: Pin the 'struct nfs_server' during a FREE_STATEID call
[ Upstream commit cf616096a0 ]

Dan Aloni reports that he was able to hit a use-after-free bug if a
FREE_STATEID operation gets delayed for whatever reason. Fix this by
bumping the refcount of the 'struct nfs_server' object for the duration
of the FREE_STATEID so it doesn't get cleaned up from underneath us
while operations are still in flight.

Reported-by: Dan Aloni <dan.aloni@vastdata.com>
Fixes: 7c1d5fae4a ("NFSv4: Convert nfs41_free_stateid to use an asynchronous RPC call")
Tested-by: Dan Aloni <dan.aloni@vastdata.com>
Signed-off-by: Anna Schumaker <anna.schumaker@hammerspace.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2026-08-19 18:13:05 +02:00
2026-05-23 13:03:09 +02:00
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2026-08-03 11:15:40 +02:00
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2026-05-23 13:03:09 +02:00
2026-08-09 20:22:05 +02:00
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Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.
S
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