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| author | Steve French <smfltc@us.ibm.com> | 2006-02-22 17:31:52 -0600 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-02-22 15:20:33 -0800 |
| commit | 6cec2aed8686840906f6298391dc4fd04d9ba843 (patch) | |
| tree | a6ae4784522a03c5b8eb6041ef0da5e8c81b14dc /fs/cifs | |
| parent | c45ec6566021ba3162233b575e7bc76d57b86688 (diff) | |
| download | linux-6cec2aed8686840906f6298391dc4fd04d9ba843.tar.gz linux-6cec2aed8686840906f6298391dc4fd04d9ba843.tar.bz2 linux-6cec2aed8686840906f6298391dc4fd04d9ba843.zip | |
[PATCH] CIFS: CIFSSMBRead was returning an invalid pointer in buf on socket error
Thanks to Adrian Bunk for debugging the problem and to Shaggy for
helping find the solution.
Also added a fix for 64K pages we found in loosely-related testing
Signed-off-by: Dave Kleikamp <shaggy@austin.ibm.com>
Signed-off-by: Steve French <sfrench@us.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/cifs')
| -rw-r--r-- | fs/cifs/cifssmb.c | 7 | ||||
| -rw-r--r-- | fs/cifs/connect.c | 8 |
2 files changed, 8 insertions, 7 deletions
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c index 217323b0c896..b41e8b379652 100644 --- a/fs/cifs/cifssmb.c +++ b/fs/cifs/cifssmb.c @@ -1048,13 +1048,14 @@ CIFSSMBRead(const int xid, struct cifsTconInfo *tcon, cifs_small_buf_release(iov[0].iov_base); else if(resp_buf_type == CIFS_LARGE_BUFFER) cifs_buf_release(iov[0].iov_base); - } else /* return buffer to caller to free */ /* BB FIXME how do we tell caller if it is not a large buffer */ { - *buf = iov[0].iov_base; + } else if(resp_buf_type != CIFS_NO_BUFFER) { + /* return buffer to caller to free */ + *buf = iov[0].iov_base; if(resp_buf_type == CIFS_SMALL_BUFFER) *pbuf_type = CIFS_SMALL_BUFFER; else if(resp_buf_type == CIFS_LARGE_BUFFER) *pbuf_type = CIFS_LARGE_BUFFER; - } + } /* else no valid buffer on return - leave as null */ /* Note: On -EAGAIN error only caller can retry on handle based calls since file handle passed in no longer valid */ diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c index e488603fb1e7..ef5ae6f93c75 100644 --- a/fs/cifs/connect.c +++ b/fs/cifs/connect.c @@ -1795,10 +1795,10 @@ cifs_mount(struct super_block *sb, struct cifs_sb_info *cifs_sb, conjunction with 52K kvec constraint on arch with 4K page size */ - if(cifs_sb->rsize < PAGE_CACHE_SIZE) { - cifs_sb->rsize = PAGE_CACHE_SIZE; - /* Windows ME does this */ - cFYI(1,("Attempt to set readsize for mount to less than one page (4096)")); + if(cifs_sb->rsize < 2048) { + cifs_sb->rsize = 2048; + /* Windows ME may prefer this */ + cFYI(1,("readsize set to minimum 2048")); } cifs_sb->mnt_uid = volume_info.linux_uid; cifs_sb->mnt_gid = volume_info.linux_gid; |