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| author | Jesper Juhl <jj@chaosbits.net> | 2011-03-14 04:05:56 -0700 |
|---|---|---|
| committer | James Bottomley <James.Bottomley@suse.de> | 2011-03-23 11:36:20 -0500 |
| commit | 6d1802539d218e24492c651bd0687ebfe7e14831 (patch) | |
| tree | 133b05930d8272259693c1e8bcce5ce1c8d98f1b /drivers/target/target_core_iblock.c | |
| parent | 8fc1858a42663248d5b362edc313786e0be7a639 (diff) | |
| download | linux-6d1802539d218e24492c651bd0687ebfe7e14831.tar.bz2 | |
[SCSI] target: Fix match_strdup() memory leaks
match_strdup() dynamically allocates memory and it is the responsabillity
of the caller to free that memory. The following three cases:
drivers/target/target_core_file.c:fd_set_configfs_dev_params()
drivers/target/target_core_iblock.c:iblock_set_configfs_dev_params()
drivers/target/target_core_configfs.c:target_core_dev_pr_store_attr_res_aptpl_metadata()
should be kfree()'ing the allocated memory once it is no longer needed.
It also makes sure to return -ENOMEM if the memory allocation in match_strdup()
should fail. For target_core_configfs.c, this patch adds kfree()'s around
Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, Opt_sa_res_key,
Opt_target_fabric, and Opt_target_node for the Persistent Reservations
Activate Persistence across Target Power Loss (APTPL=1) token parsing.
Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Nicholas A. Bellinger <nab@linux-iscsi.org>
Signed-off-by: James Bottomley <James.Bottomley@suse.de>
Diffstat (limited to 'drivers/target/target_core_iblock.c')
| -rw-r--r-- | drivers/target/target_core_iblock.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/target/target_core_iblock.c b/drivers/target/target_core_iblock.c index 3df570db0e4f..96d98cc8f85b 100644 --- a/drivers/target/target_core_iblock.c +++ b/drivers/target/target_core_iblock.c @@ -468,7 +468,7 @@ static ssize_t iblock_set_configfs_dev_params(struct se_hba *hba, const char *page, ssize_t count) { struct iblock_dev *ib_dev = se_dev->se_dev_su_ptr; - char *orig, *ptr, *opts; + char *orig, *ptr, *arg_p, *opts; substring_t args[MAX_OPT_ARGS]; int ret = 0, arg, token; @@ -491,9 +491,14 @@ static ssize_t iblock_set_configfs_dev_params(struct se_hba *hba, ret = -EEXIST; goto out; } - - ret = snprintf(ib_dev->ibd_udev_path, SE_UDEV_PATH_LEN, - "%s", match_strdup(&args[0])); + arg_p = match_strdup(&args[0]); + if (!arg_p) { + ret = -ENOMEM; + break; + } + snprintf(ib_dev->ibd_udev_path, SE_UDEV_PATH_LEN, + "%s", arg_p); + kfree(arg_p); printk(KERN_INFO "IBLOCK: Referencing UDEV path: %s\n", ib_dev->ibd_udev_path); ib_dev->ibd_flags |= IBDF_HAS_UDEV_PATH; |