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| author | Ronnie Sahlberg <lsahlber@redhat.com> | 2020-01-08 06:08:07 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-02-01 12:34:37 +0300 |
| commit | b396ec7241edcf75e12900de00f8e8998ed53a1f (patch) | |
| tree | 328de8051cc46afaff406703b9757bc0cdaf87ac | |
| parent | d65b067c25465df7468342957dfec3d4788a1807 (diff) | |
| download | linux-b396ec7241edcf75e12900de00f8e8998ed53a1f.tar.xz | |
cifs: set correct max-buffer-size for smb2_ioctl_init()
commit 731b82bb1750a906c1e7f070aedf5505995ebea7 upstream.
Fix two places where we need to adjust down the max response size for
ioctl when it is used together with compounding.
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com>
CC: Stable <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | fs/cifs/smb2ops.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index b5c1cba3e6a1..662256fa2a18 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -1461,7 +1461,9 @@ smb2_ioctl_query_info(const unsigned int xid, COMPOUND_FID, COMPOUND_FID, qi.info_type, true, buffer, qi.output_buffer_length, - CIFSMaxBufSize); + CIFSMaxBufSize - + MAX_SMB2_CREATE_RESPONSE_SIZE - + MAX_SMB2_CLOSE_RESPONSE_SIZE); } } else if (qi.flags == PASSTHRU_SET_INFO) { /* Can eventually relax perm check since server enforces too */ @@ -2634,7 +2636,10 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon, rc = SMB2_ioctl_init(tcon, &rqst[1], fid.persistent_fid, fid.volatile_fid, FSCTL_GET_REPARSE_POINT, - true /* is_fctl */, NULL, 0, CIFSMaxBufSize); + true /* is_fctl */, NULL, 0, + CIFSMaxBufSize - + MAX_SMB2_CREATE_RESPONSE_SIZE - + MAX_SMB2_CLOSE_RESPONSE_SIZE); if (rc) goto querty_exit; |