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14fc53fb25
[ Upstream commit 3a0b7fa095212b51ed63892540c4f249991a2d74 ]
Address Null pointer dereference / undefined behavior in rtattr_pack
(note that size is 0 in the bad case).
Flagged by cppcheck as:
tools/testing/selftests/net/ipsec.c:230:25: warning: Possible null pointer
dereference: payload [nullPointer]
memcpy(RTA_DATA(attr), payload, size);
^
tools/testing/selftests/net/ipsec.c:1618:54: note: Calling function 'rtattr_pack',
4th argument 'NULL' value is 0
if (rtattr_pack(&req.nh, sizeof(req), XFRMA_IF_ID, NULL, 0)) {
^
tools/testing/selftests/net/ipsec.c:230:25: note: Null pointer dereference
memcpy(RTA_DATA(attr), payload, size);
^
Signed-off-by: Liu Ye <liuye@kylinos.cn>
Link: https://patch.msgid.link/20250116013037.29470-1-liuye@kylinos.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
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.