ksmbd: fix SMB 3.11 posix extension mount failure
mainline inclusion from mainline-5.17-rc4 commit 9ca8581e category: feature bugzilla: https://gitee.com/openeuler/kernel/issues/I60T7G CVE: NA Reference: https://git.kernel.org/torvalds/linux/c/9ca8581e79e5 ------------------------------- cifs client set 4 to DataLength of create_posix context, which mean Mode variable of create_posix context is only available. So buffer validation of ksmbd should check only the size of Mode except for the size of Reserved variable. Fixes: 8f77150c ("ksmbd: add buffer validation for SMB2_CREATE_CONTEXT") Cc: stable@vger.kernel.org # v5.15+ Reported-by: NSteve French <smfrench@gmail.com> Tested-by: NSteve French <stfrench@microsoft.com> Signed-off-by: NNamjae Jeon <linkinjeon@kernel.org> Signed-off-by: NSteve French <stfrench@microsoft.com> Signed-off-by: NJason Yan <yanaijie@huawei.com> Signed-off-by: NZhong Jinghua <zhongjinghua@huawei.com>
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