Linux kernel stable tree (mirror) https://git.radix-linux.su/kernel/linux.git/atom?h=v6.12.80 2025-08-20T16:30:56+00:00 2025-08-20T16:30:56+00:00 Naman Jain namjain@linux.microsoft.com 2025-07-11T06:08:46+00:00 urn:sha1:16decac6ed8fda6ea4010f55087823e2599d601a commit a4131a50d072b369bfed0b41e741c41fd8048641 upstream. Size of ring buffer, as defined in uio_hv_generic driver, is no longer fixed to 16 KB. This creates a problem in fcopy, since this size was hardcoded. With the change in place to make ring sysfs node actually reflect the size of underlying ring buffer, it is safe to get the size of ring sysfs file and use it for ring buffer size in fcopy daemon. Fix the issue of disparity in ring buffer size, by making it dynamic in fcopy uio daemon. Cc: stable@vger.kernel.org Fixes: 0315fef2aff9 ("uio_hv_generic: Align ring size to system page") Signed-off-by: Naman Jain <namjain@linux.microsoft.com> Reviewed-by: Saurabh Sengar <ssengar@linux.microsoft.com> Reviewed-by: Long Li <longli@microsoft.com> Link: https://lore.kernel.org/r/20250711060846.9168-1-namjain@linux.microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <20250711060846.9168-1-namjain@linux.microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2025-08-01T08:48:40+00:00 Yasumasa Suenaga yasuenag@gmail.com 2025-06-28T02:22:17+00:00 urn:sha1:ef3bee8d1da10932b4e2e8803fe11cac9301a1c8 [ Upstream commit 0d86a8d65c1e69610bfe1a7a774f71ff111ed8c1 ] The hv_fcopy_uio_daemon fails to correctly handle file copy requests from Windows hosts (e.g. via Copy-VMFile) due to wchar_t size differences between Windows and Linux. On Linux, wchar_t is 32 bit, whereas Windows uses 16 bit wide characters. Fix this by ensuring that file transfers from host to Linux guest succeed with correctly decoded file names and paths. - Treats file name and path as __u16 arrays, not wchar_t*. - Allocates fixed-size buffers (W_MAX_PATH) for converted strings instead of using malloc. - Adds a check for target path length to prevent snprintf() buffer overflow. Fixes: 82b0945ce2c2 ("tools: hv: Add new fcopy application based on uio driver") Signed-off-by: Yasumasa Suenaga <yasuenag@gmail.com> Reviewed-by: Naman Jain <namjain@linux.microsoft.com> Link: https://lore.kernel.org/r/20250628022217.1514-2-yasuenag@gmail.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <20250628022217.1514-2-yasuenag@gmail.com> Signed-off-by: Sasha Levin <sashal@kernel.org> 2024-12-27T13:02:15+00:00 Dexuan Cui decui@microsoft.com 2024-09-10T00:44:32+00:00 urn:sha1:9015ebfe8ec5397ea8f73ce3614df60957c572d0 commit cb1b78f1c726c938bd47497c1ab16b01ce967f37 upstream. hv_fcopy_uio_daemon.c:436:53: warning: '%s' directive output may be truncated writing up to 14 bytes into a region of size 10 [-Wformat-truncation=] 436 | snprintf(uio_dev_path, sizeof(uio_dev_path), "/dev/%s", uio_name); Also added 'static' for the array 'desc[]'. Fixes: 82b0945ce2c2 ("tools: hv: Add new fcopy application based on uio driver") Cc: stable@vger.kernel.org # 6.10+ Signed-off-by: Dexuan Cui <decui@microsoft.com> Reviewed-by: Saurabh Sengar <ssengar@linux.microsoft.com> Link: https://lore.kernel.org/r/20240910004433.50254-1-decui@microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <20240910004433.50254-1-decui@microsoft.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> 2024-12-27T13:02:01+00:00 Olaf Hering olaf@aepfle.de 2024-10-16T14:35:10+00:00 urn:sha1:d72139fa20246bb0be8c94d9dc1d0a5a015f345a [ Upstream commit 91ae69c7ed9e262f24240c425ad1eef2cf6639b7 ] Align permissions of the resulting .nmconnection file, instead of the input file from hv_kvp_daemon. To avoid the tiny time frame where the output file is world-readable, use umask instead of chmod. Fixes: 42999c904612 ("hv/hv_kvp_daemon:Support for keyfile based connection profile") Signed-off-by: Olaf Hering <olaf@aepfle.de> Reviewed-by: Shradha Gupta <shradhagupta@linux.microsoft.com> Link: https://lore.kernel.org/r/20241016143521.3735-1-olaf@aepfle.de Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <20241016143521.3735-1-olaf@aepfle.de> Signed-off-by: Sasha Levin <sashal@kernel.org> 2024-09-19T06:15:30+00:00 Linus Torvalds torvalds@linux-foundation.org 2024-09-19T06:15:30+00:00 urn:sha1:1d7bb2bf7ad8c95cd50e97a83461610385b5259d Pull Hyper-V updates from Wei Liu: - Optimize boot time by concurrent execution of hv_synic_init() (Saurabh Sengar) - Use helpers to read control registers in hv_snp_boot_ap() (Yosry Ahmed) - Add memory allocation check in hv_fcopy_start (Zhu Jun) * tag 'hyperv-next-signed-20240916' of git://git.kernel.org/pub/scm/linux/kernel/git/hyperv/linux: tools/hv: Add memory allocation check in hv_fcopy_start x86/hyperv: use helpers to read control registers in hv_snp_boot_ap() Drivers: hv: vmbus: Optimize boot time by concurrent execution of hv_synic_init() 2024-09-09T01:09:27+00:00 Zhu Jun zhujun2@cmss.chinamobile.com 2024-09-06T09:13:33+00:00 urn:sha1:94e86b174d103d941b4afc4f016af8af9e5352fa Added error handling for memory allocation failures of file_name and path_name. Signed-off-by: Zhu Jun <zhujun2@cmss.chinamobile.com> Reviewed-by: Dexuan Cui <decui@microsoft.com> Tested-by: Saurabh Sengar <ssengar@linux.microsoft.com> Link: https://lore.kernel.org/r/20240906091333.11419-1-zhujun2@cmss.chinamobile.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <20240906091333.11419-1-zhujun2@cmss.chinamobile.com> 2024-09-05T07:23:08+00:00 zhang jiao zhangjiao2@cmss.chinamobile.com 2024-09-02T04:21:03+00:00 urn:sha1:5e5cc1eb65256e6017e3deec04f9806f2f317853 rm .*.cmd when make clean Signed-off-by: zhang jiao <zhangjiao2@cmss.chinamobile.com> Reviewed-by: Saurabh Sengar <ssengar@linux.microsoft.com> Link: https://lore.kernel.org/r/20240902042103.5867-1-zhangjiao2@cmss.chinamobile.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <20240902042103.5867-1-zhangjiao2@cmss.chinamobile.com> 2024-08-03T00:01:55+00:00 Anthony Nandaa profnandaa@gmail.com 2024-07-02T10:22:50+00:00 urn:sha1:c6e2b45a544b45ce1a26858ded61a0dc4896d54a In many modern Linux distros, running `lsvmbus` returns the error: ``` /usr/bin/env: 'python': No such file or directory ``` because 'python' doesn't point anywhere. Now that python2 has reached EOL as of January 1, 2020 and is no longer maintained[1], these distros have python3 instead. Also, the script isn't executable by default because the permissions are set to mode 644. Fix this by updating the shebang in the `lsvmbus` to use python3 instead of python. Also fix the permissions to be 755 so that is executable by default, which matches other similar scripts in `tools/hv`. The script is also tested and verified that is compatible with python3. [1] https://www.python.org/doc/sunset-python-2/ Signed-off-by: Anthony Nandaa <profnandaa@gmail.com> Reviewed-by: Michael Kelley <mhklinux@outlook.com> Link: https://lore.kernel.org/r/20240702102250.13935-1-profnandaa@gmail.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <20240702102250.13935-1-profnandaa@gmail.com> 2024-05-28T05:27:35+00:00 Saurabh Sengar ssengar@linux.microsoft.com 2024-05-06T05:38:58+00:00 urn:sha1:207e03b00b47ccbd692941b183510026e1bd6ce9 Packed struct vmbus_bufring is 4096 byte aligned and the reporting warning is for the first member of that struct which shouldn't add any offset to create alignment issue. Suppress the warning by adding -Wno-address-of-packed-member flag to gcc. Fixes: 45bab4d74651 ("tools: hv: Add vmbus_bufring") Reported-by: kernel test robot <yujie.liu@intel.com> Closes: https://lore.kernel.org/all/202404121913.GhtSoKbW-lkp@intel.com/ Signed-off-by: Saurabh Sengar <ssengar@linux.microsoft.com> Link: https://lore.kernel.org/r/1714973938-4063-1-git-send-email-ssengar@linux.microsoft.com Signed-off-by: Wei Liu <wei.liu@kernel.org> Message-ID: <1714973938-4063-1-git-send-email-ssengar@linux.microsoft.com> 2024-04-23T11:16:03+00:00 Greg Kroah-Hartman gregkh@linuxfoundation.org 2024-04-23T11:16:03+00:00 urn:sha1:df1aa5b0d1a69b93d1371063299e42dcc56cbe7b We need the char/misc fixes in here as well to work off of. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>