From: Aurelien Aptel aaptel@suse.com
This patch has been added to the 4.1 stable tree. If you have any objections, please let us know.
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[ Upstream commit 97f4b7276b829a8927ac903a119bef2f963ccc58 ]
also replaces memset()+kfree() by kzfree().
Signed-off-by: Aurelien Aptel aaptel@suse.com Signed-off-by: Steve French smfrench@gmail.com Reviewed-by: Pavel Shilovsky pshilov@microsoft.com Cc: stable@vger.kernel.org Signed-off-by: Sasha Levin alexander.levin@microsoft.com --- fs/cifs/cifsencrypt.c | 3 +-- fs/cifs/connect.c | 6 +++--- fs/cifs/misc.c | 14 ++++---------- 3 files changed, 8 insertions(+), 15 deletions(-)
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c index 4acbc390a7d6..1d707a67f8ac 100644 --- a/fs/cifs/cifsencrypt.c +++ b/fs/cifs/cifsencrypt.c @@ -306,9 +306,8 @@ int calc_lanman_hash(const char *password, const char *cryptkey, bool encrypt, { int i; int rc; - char password_with_pad[CIFS_ENCPWD_SIZE]; + char password_with_pad[CIFS_ENCPWD_SIZE] = {0};
- memset(password_with_pad, 0, CIFS_ENCPWD_SIZE); if (password) strncpy(password_with_pad, password, CIFS_ENCPWD_SIZE);
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index a2c100aed4b0..d733df946cc6 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -1635,7 +1635,7 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, tmp_end++; if (!(tmp_end < end && tmp_end[1] == delim)) { /* No it is not. Set the password to NULL */ - kfree(vol->password); + kzfree(vol->password); vol->password = NULL; break; } @@ -1673,7 +1673,7 @@ cifs_parse_mount_options(const char *mountdata, const char *devname, options = end; }
- kfree(vol->password); + kzfree(vol->password); /* Now build new password string */ temp_len = strlen(value); vol->password = kzalloc(temp_len+1, GFP_KERNEL); @@ -4038,7 +4038,7 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, kuid_t fsuid) reset_cifs_unix_caps(0, tcon, NULL, vol_info); out: kfree(vol_info->username); - kfree(vol_info->password); + kzfree(vol_info->password); kfree(vol_info);
return tcon; diff --git a/fs/cifs/misc.c b/fs/cifs/misc.c index 8442b8b8e0be..a9b68cb38c12 100644 --- a/fs/cifs/misc.c +++ b/fs/cifs/misc.c @@ -99,14 +99,11 @@ sesInfoFree(struct cifs_ses *buf_to_free) kfree(buf_to_free->serverOS); kfree(buf_to_free->serverDomain); kfree(buf_to_free->serverNOS); - if (buf_to_free->password) { - memset(buf_to_free->password, 0, strlen(buf_to_free->password)); - kfree(buf_to_free->password); - } + kzfree(buf_to_free->password); kfree(buf_to_free->user_name); kfree(buf_to_free->domainName); - kfree(buf_to_free->auth_key.response); - kfree(buf_to_free); + kzfree(buf_to_free->auth_key.response); + kzfree(buf_to_free); }
struct cifs_tcon * @@ -136,10 +133,7 @@ tconInfoFree(struct cifs_tcon *buf_to_free) } atomic_dec(&tconInfoAllocCount); kfree(buf_to_free->nativeFileSystem); - if (buf_to_free->password) { - memset(buf_to_free->password, 0, strlen(buf_to_free->password)); - kfree(buf_to_free->password); - } + kzfree(buf_to_free->password); kfree(buf_to_free); }