Commit a4db5fe5 authored by J. Bruce Fields's avatar J. Bruce Fields Committed by Linus Torvalds
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[PATCH] knfsd: nfsd4: fix memory leak on kmalloc failure in savemem

The wrong pointer is being kfree'd in savemem() when defer_free returns with
an error.
Signed-off-by: default avatarBenny Halevy <>
Signed-off-by: default avatarJ. Bruce Fields <>
Signed-off-by: default avatarNeil Brown <>
Signed-off-by: default avatarAndrew Morton <>
Signed-off-by: default avatarLinus Torvalds <>
parent 28e05dd8
......@@ -199,24 +199,22 @@ defer_free(struct nfsd4_compoundargs *argp,
static char *savemem(struct nfsd4_compoundargs *argp, __be32 *p, int nbytes)
void *new = NULL;
if (p == argp->tmp) {
new = kmalloc(nbytes, GFP_KERNEL);
if (!new) return NULL;
p = new;
p = kmalloc(nbytes, GFP_KERNEL);
if (!p)
return NULL;
memcpy(p, argp->tmp, nbytes);
} else {
BUG_ON(p != argp->tmpp);
argp->tmpp = NULL;
if (defer_free(argp, kfree, p)) {
return NULL;
} else
return (char *)p;
static __be32
nfsd4_decode_bitmap(struct nfsd4_compoundargs *argp, u32 *bmval)
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