This is a note to let you know that I've just added the patch titled smb3: fix problem with null cifs super block with previous patch to the 5.4-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: smb3-fix-problem-with-null-cifs-super-block-with-previous-patch.patch and it can be found in the queue-5.4 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let <stable@xxxxxxxxxxxxxxx> know about it. >From 87f93d82e0952da18af4d978e7d887b4c5326c0b Mon Sep 17 00:00:00 2001 From: Steve French <stfrench@xxxxxxxxxxxxx> Date: Tue, 4 Feb 2020 13:02:59 -0600 Subject: smb3: fix problem with null cifs super block with previous patch From: Steve French <stfrench@xxxxxxxxxxxxx> commit 87f93d82e0952da18af4d978e7d887b4c5326c0b upstream. Add check for null cifs_sb to create_options helper Signed-off-by: Steve French <stfrench@xxxxxxxxxxxxx> Reviewed-by: Amir Goldstein <amir73il@xxxxxxxxx> Reviewed-by: Aurelien Aptel <aaptel@xxxxxxxx> Signed-off-by: Pratyush Yadav <ptyadav@xxxxxxxxx> Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx> --- fs/cifs/cifsproto.h | 2 +- fs/cifs/smb2ops.c | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) --- a/fs/cifs/cifsproto.h +++ b/fs/cifs/cifsproto.h @@ -602,7 +602,7 @@ static inline int get_dfs_path(const uns static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options) { - if (backup_cred(cifs_sb)) + if (cifs_sb && (backup_cred(cifs_sb))) return options | CREATE_OPEN_BACKUP_INTENT; else return options; --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -2343,7 +2343,7 @@ smb2_queryfs(const unsigned int xid, str FS_FULL_SIZE_INFORMATION, SMB2_O_INFO_FILESYSTEM, sizeof(struct smb2_fs_full_size_info), - &rsp_iov, &buftype, NULL); + &rsp_iov, &buftype, cifs_sb); if (rc) goto qfs_exit; Patches currently in stable-queue which might be from stfrench@xxxxxxxxxxxxx are queue-5.4/smb3-fix-problem-with-null-cifs-super-block-with-previous-patch.patch