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authorDan Carpenter <dan.carpenter@oracle.com>2013-06-19 20:01:01 +0400
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2013-06-20 07:30:31 +0400
commite42d50baf43120a78985f13f6e9c8f92fae091c2 (patch)
treee9f91f6a06afe1696be14092344cdececfe82e99 /drivers/fmc/fmc-sdb.c
parente3a3c3a205554e564751cd9c0276b2af813d7a92 (diff)
downloadlinux-e42d50baf43120a78985f13f6e9c8f92fae091c2.tar.xz
FMC: NULL dereference on allocation failure
If we don't allocate "arr" then the cleanup path will dereference it and oops. Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com> Acked-by: Alessandro Rubini <rubini@gnudd.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/fmc/fmc-sdb.c')
-rw-r--r--drivers/fmc/fmc-sdb.c11
1 files changed, 6 insertions, 5 deletions
diff --git a/drivers/fmc/fmc-sdb.c b/drivers/fmc/fmc-sdb.c
index 74fb326f4af1..79adc39221ea 100644
--- a/drivers/fmc/fmc-sdb.c
+++ b/drivers/fmc/fmc-sdb.c
@@ -46,16 +46,17 @@ static struct sdb_array *__fmc_scan_sdb_tree(struct fmc_device *fmc,
onew = __sdb_rd(fmc, sdb_addr + 4, convert);
n = __be16_to_cpu(*(uint16_t *)&onew);
arr = kzalloc(sizeof(*arr), GFP_KERNEL);
- if (arr) {
- arr->record = kzalloc(sizeof(arr->record[0]) * n, GFP_KERNEL);
- arr->subtree = kzalloc(sizeof(arr->subtree[0]) * n, GFP_KERNEL);
- }
- if (!arr || !arr->record || !arr->subtree) {
+ if (!arr)
+ return ERR_PTR(-ENOMEM);
+ arr->record = kzalloc(sizeof(arr->record[0]) * n, GFP_KERNEL);
+ arr->subtree = kzalloc(sizeof(arr->subtree[0]) * n, GFP_KERNEL);
+ if (!arr->record || !arr->subtree) {
kfree(arr->record);
kfree(arr->subtree);
kfree(arr);
return ERR_PTR(-ENOMEM);
}
+
arr->len = n;
arr->level = level;
arr->fmc = fmc;