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Filename Latest commit message Latest commit date
Alan Stern 57baab0f37 fs: sysfs: Fix reference leak in sysfs_break_active_protection()
commit a90bca2228c0646fc29a72689d308e5fe03e6d78 upstream.

The sysfs_break_active_protection() routine has an obvious reference
leak in its error path.  If the call to kernfs_find_and_get() fails then
kn will be NULL, so the companion sysfs_unbreak_active_protection()
routine won't get called (and would only cause an access violation by
trying to dereference kn->parent if it was called).  As a result, the
reference to kobj acquired at the start of the function will never be
released.

Fix the leak by adding an explicit kobject_put() call when kn is NULL.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Fixes: 2afc9166f7 ("scsi: sysfs: Introduce sysfs_{un,}break_active_protection()")
Cc: Bart Van Assche <bvanassche@acm.org>
Cc: stable@vger.kernel.org
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Acked-by: Tejun Heo <tj@kernel.org>
Link: https://lore.kernel.org/r/8a4d3f0f-c5e3-4b70-a188-0ca433f9e6f9@rowland.harvard.edu
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2024-05-02 16:18:32 +02:00
arch x86/cpufeatures: Fix dependencies for GFNI, VAES, and VPCLMULQDQ 2024-05-02 16:18:31 +02:00
block
certs
crypto
Documentation
drivers speakup: Avoid crash on very long word 2024-05-02 16:18:32 +02:00
fs fs: sysfs: Fix reference leak in sysfs_break_active_protection() 2024-05-02 16:18:32 +02:00
include af_unix: Do not use atomic ops for unix_sk(sk)->inflight. 2024-05-02 16:18:29 +02:00
init
ipc
kernel Revert "tracing/trigger: Fix to return error if failed to alloc snapshot" 2024-05-02 16:18:30 +02:00
lib
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net netfilter: nf_tables: Fix potential data-race in __nft_expr_type_get() 2024-05-02 16:18:30 +02:00
samples
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tools selftests/ftrace: Limit length in subsystem-enable tests 2024-05-02 16:18:29 +02:00
usr
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Makefile Linux 5.4.274 2024-04-13 12:51:41 +02:00
README

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.