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linux/tools/virtio
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longlong yan 1d754b7c0f tools/virtio: check mmap return value in vringh_test 
[ Upstream commit ec6177dfe9 ]

In parallel_test(), the return values of mmap() for both host_map and
guest_map are not checked against MAP_FAILED. If mmap() fails, the
subsequent code will dereference the invalid pointer, leading to a
segmentation fault.

Add MAP_FAILED checks after both mmap() calls, using err() to report
the error and exit, consistent with the existing error handling style
in this file (e.g., the open() call on line 149).

Fixes: 1515c5ce26 ("tools/virtio: add vring_test.")
Signed-off-by: longlong yan <yanlonglong@kylinos.cn>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Message-ID: <20260605021446.1611-1-yanlonglong@kylinos.cn>
Signed-off-by: Sasha Levin <sashal@kernel.org>
History 2026-07-24 15:51:34 +02:00
..
asm tools/virtio: add barrier for aarch64 2020-12-18 16:14:30 -05:00
crypto tools/virtio: more stubs 2019-10-11 09:27:27 -04:00
generated virtio/test: fix up after IOTLB changes 2020-04-16 18:31:08 -04:00
linux tools/virtio: fix build 2024-03-01 13:21:52 +01:00
ringtest treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 482 2019-06-19 17:09:52 +02:00
uapi/linux License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
vhost_test treewide: Add SPDX license identifier - Makefile/Kconfig 2019-05-21 10:50:46 +02:00
virtio-trace treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 165 2019-05-30 11:26:38 -07:00
xen tools/virtio: xen stub 2019-10-13 09:38:27 -04:00
.gitignore .gitignore: add SPDX License Identifier 2020-03-25 11:50:48 +01:00
Makefile tools/virtio: compile with -pthread 2022-05-25 09:57:25 +02:00
virtio_test.c tools/virtio: fix virtio_test execution 2022-04-08 14:22:47 +02:00
vringh_test.c tools/virtio: check mmap return value in vringh_test 2026-07-24 15:51:34 +02:00