valgrind complained about uninitialized memory.
As usual, valgrind was right, although the memory never was
actually referenced.
Signed-off-by: Hannes Reinecke <hare@xxxxxxx>
---
libmultipath/discovery.c | 27 +++++++++++++++++----------
libmultipath/sysfs.c | 6 ++++--
2 files changed, 21 insertions(+), 12 deletions(-)
diff --git a/libmultipath/discovery.c b/libmultipath/discovery.c
index 092930a..c59dbc2 100644
--- a/libmultipath/discovery.c
+++ b/libmultipath/discovery.c
@@ -321,7 +321,7 @@ static void
sysfs_set_rport_tmo(struct multipath *mpp, struct path *pp)
{
struct udev_device *rport_dev = NULL;
- char value[11];
+ char value[16];
char rport_id[32];
unsigned long long tmo = 0;
int ret;
@@ -349,7 +349,7 @@ sysfs_set_rport_tmo(struct multipath *mpp, struct path *pp)
* then set fast_io_fail, and _then_ set dev_loss_tmo
* to the correct value.
*/
- value[0] = '\0';
+ memset(value, 0, 16);
if (mpp->fast_io_fail != MP_FAST_IO_FAIL_UNSET &&
mpp->fast_io_fail != MP_FAST_IO_FAIL_ZERO &&
mpp->fast_io_fail != MP_FAST_IO_FAIL_OFF) {
@@ -367,17 +367,18 @@ sysfs_set_rport_tmo(struct multipath *mpp, struct path *pp)
goto out;
}
if (mpp->fast_io_fail >= tmo) {
- snprintf(value, 11, "%u", mpp->fast_io_fail);
+ snprintf(value, 16, "%u", mpp->fast_io_fail);
}
} else if (mpp->dev_loss > 600) {
condlog(3, "%s: limiting dev_loss_tmo to 600, since "
"fast_io_fail is not set", rport_id);
- snprintf(value, 11, "%u", 600);
+ snprintf(value, 16, "%u", 600);
} else {
- snprintf(value, 11, "%u", mpp->dev_loss);
+ snprintf(value, 16, "%u", mpp->dev_loss);
}
if (strlen(value)) {
- ret = sysfs_attr_set_value(rport_dev, "dev_loss_tmo", value, 11);
+ ret = sysfs_attr_set_value(rport_dev, "dev_loss_tmo",
+ value, strlen(value));
if (ret <= 0) {
if (ret == -EBUSY)
condlog(3, "%s: rport blocked", rport_id);
@@ -393,9 +394,9 @@ sysfs_set_rport_tmo(struct multipath *mpp, struct path *pp)
else if (mpp->fast_io_fail == MP_FAST_IO_FAIL_ZERO)
sprintf(value, "0");
else
- snprintf(value, 11, "%u", mpp->fast_io_fail);
+ snprintf(value, 16, "%u", mpp->fast_io_fail);
ret = sysfs_attr_set_value(rport_dev, "fast_io_fail_tmo",
- value, 11);
+ value, strlen(value));
if (ret <= 0) {
if (ret == -EBUSY)
condlog(3, "%s: rport blocked", rport_id);
@@ -405,9 +406,9 @@ sysfs_set_rport_tmo(struct multipath *mpp, struct path *pp)
}
}
if (tmo > 0) {
- snprintf(value, 11, "%u", mpp->dev_loss);
+ snprintf(value, 16, "%u", mpp->dev_loss);
ret = sysfs_attr_set_value(rport_dev, "dev_loss_tmo",
- value, 11);
+ value, strlen(value));
if (ret <= 0) {
if (ret == -EBUSY)
condlog(3, "%s: rport blocked", rport_id);
@@ -809,6 +810,9 @@ cciss_sysfs_pathinfo (struct path * pp)
static int
common_sysfs_pathinfo (struct path * pp)
{
+ if (!pp)
+ return 1;
+
if (!pp->udev) {
condlog(4, "%s: udev not initialised", pp->dev);
return 1;
@@ -1059,6 +1063,9 @@ pathinfo (struct path *pp, vector hwtable, int mask)
{
int path_state;
+ if (!pp)
+ return 1;
+
condlog(3, "%s: mask = 0x%x", pp->dev, mask);
/*
diff --git a/libmultipath/sysfs.c b/libmultipath/sysfs.c
index 0670e0a..8ba27d4 100644
--- a/libmultipath/sysfs.c
+++ b/libmultipath/sysfs.c
@@ -102,7 +102,7 @@ ssize_t sysfs_attr_set_value(struct udev_device *dev, const char *attr_name,
int fd;
ssize_t size = -1;
- if (!dev || !attr_name || !value)
+ if (!dev || !attr_name || !value || !value_len)
return 0;
snprintf(devpath, PATH_SIZE, "%s/%s", udev_device_get_syspath(dev),
@@ -152,9 +152,10 @@ sysfs_get_size (struct path *pp, unsigned long long * size)
char attr[255];
int r;
- if (!pp->udev)
+ if (!pp->udev || !size)
return 1;
+ attr[0] = '\0';
if (sysfs_attr_get_value(pp->udev, "size", attr, 255) == 0) {
condlog(3, "%s: No size attribute in sysfs", pp->dev);
return 1;
@@ -164,6 +165,7 @@ sysfs_get_size (struct path *pp, unsigned long long * size)
if (r != 1) {
condlog(3, "%s: Cannot parse size attribute", pp->dev);
+ *size = 0;
return 1;
}
--
1.7.10.4
--
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