diff options
| author | Steve French <sfrench@us.ibm.com> | 2009-02-17 01:29:40 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-03-16 17:52:44 -0700 |
| commit | fbb38fcb8e793f5df68be9992354d9d50cbd41ea (patch) | |
| tree | ea4ed8f6d683920aa792bf352c119606253f0d6d /fs | |
| parent | 4eb4e67499139d894b8c171fee87dbefb1562f35 (diff) | |
Fix oops in cifs_strfromUCS_le mounting to servers which do not specify their OS
commit 69765529d701c838df19ea1f5ad2f33a528261ae upstream.
Fixes kernel bug #10451 http://bugzilla.kernel.org/show_bug.cgi?id=10451
Certain NAS appliances do not set the operating system or network operating system
fields in the session setup response on the wire. cifs was oopsing on the unexpected
zero length response fields (when trying to null terminate a zero length field).
This fixes the oops.
Acked-by: Jeff Layton <jlayton@redhat.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'fs')
| -rw-r--r-- | fs/cifs/CHANGES | 2 | ||||
| -rw-r--r-- | fs/cifs/sess.c | 4 |
2 files changed, 4 insertions, 2 deletions
diff --git a/fs/cifs/CHANGES b/fs/cifs/CHANGES index 06e521a945c..088e9ae5c58 100644 --- a/fs/cifs/CHANGES +++ b/fs/cifs/CHANGES @@ -1,3 +1,5 @@ +Fix oops in cifs_dfs_ref.c when prefixpath is not reachable when using DFS. + Version 1.54 ------------ Fix premature write failure on congested networks (we would give up diff --git a/fs/cifs/sess.c b/fs/cifs/sess.c index 252fdc0567f..89fac77d1be 100644 --- a/fs/cifs/sess.c +++ b/fs/cifs/sess.c @@ -228,7 +228,7 @@ static int decode_unicode_ssetup(char **pbcc_area, int bleft, kfree(ses->serverOS); /* UTF-8 string will not grow more than four times as big as UCS-16 */ - ses->serverOS = kzalloc(4 * len, GFP_KERNEL); + ses->serverOS = kzalloc((4 * len) + 2 /* trailing null */, GFP_KERNEL); if (ses->serverOS != NULL) cifs_strfromUCS_le(ses->serverOS, (__le16 *)data, len, nls_cp); data += 2 * (len + 1); @@ -241,7 +241,7 @@ static int decode_unicode_ssetup(char **pbcc_area, int bleft, return rc; kfree(ses->serverNOS); - ses->serverNOS = kzalloc(4 * len, GFP_KERNEL); /* BB this is wrong length FIXME BB */ + ses->serverNOS = kzalloc((4 * len) + 2 /* trailing null */, GFP_KERNEL); if (ses->serverNOS != NULL) { cifs_strfromUCS_le(ses->serverNOS, (__le16 *)data, len, nls_cp); |