lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

SUNRPC,RPCSEC_GSS: remove unnecessary kmalloc of a checksum

Browse Source 
Remove unnecessary kmalloc of temporary space to hold the md5 result; it's
small enough to just put on the stack.

This code may be called to process rpc's necessary to perform writes, so
there's a potential deadlock whenever we kmalloc() here.  After this a
couple kmalloc()'s still remain, to be removed soon.

This also fixes a rare double-free on error noticed by coverity.

Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu>
Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
This commit is contained in:
J. Bruce Fields
2006-03-20 23:23:11 -05:00
committed by Trond Myklebust
parent 7a1218a277
commit 9e57b302cf
5 changed files with 12 additions and 17 deletions
Download Patch File Download Diff File Expand all files Collapse all files

5
net/sunrpc/auth_gss/gss_spkm3_seal.c
View File

@@ -57,7 +57,8 @@ spkm3_make_token(struct spkm3_ctx *ctx,
{
s32 checksum_type;
char tokhdrbuf[25];
struct xdr_netobj md5cksum = {.len = 0, .data = NULL};
char cksumdata[16];
struct xdr_netobj md5cksum = {.len = 0, .data = cksumdata};
struct xdr_netobj mic_hdr = {.len = 0, .data = tokhdrbuf};
int tokenlen = 0;
unsigned char *ptr;
@@ -115,13 +116,11 @@ spkm3_make_token(struct spkm3_ctx *ctx,
dprintk("RPC: gss_spkm3_seal: SPKM_WRAP_TOK not supported\n");
goto out_err;
}
kfree(md5cksum.data);
/* XXX need to implement sequence numbers, and ctx->expired */
return GSS_S_COMPLETE;
out_err:
kfree(md5cksum.data);
token->data = NULL;
token->len = 0;
return GSS_S_FAILURE;