dev_loss_tmo is a u32 value. However the kernel sysfs code prints it as
a signed integer. This means that if dev_loss_tmo is above INT_MAX, the
sysfs value will be a negative number. Parsing this was causing
sysfs_set_rport_tmo() to fail.

Signed-off-by: Benjamin Marzinski <bmarz...@redhat.com>
Signed-off-by: Martin Wilck <mwi...@suse.com>
---
 libmultipath/discovery.c | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/libmultipath/discovery.c b/libmultipath/discovery.c
index ffec5162..83a41a4a 100644
--- a/libmultipath/discovery.c
+++ b/libmultipath/discovery.c
@@ -583,7 +583,7 @@ sysfs_set_rport_tmo(struct multipath *mpp, struct path *pp)
        struct udev_device *rport_dev = NULL;
        char value[16], *eptr;
        char rport_id[32];
-       unsigned long long tmo = 0;
+       unsigned int tmo;
        int ret;
 
        sprintf(rport_id, "rport-%d:%d-%d",
@@ -607,8 +607,8 @@ sysfs_set_rport_tmo(struct multipath *mpp, struct path *pp)
                        "error %d", rport_id, -ret);
                goto out;
        }
-       tmo = strtoull(value, &eptr, 0);
-       if (value == eptr || tmo == ULLONG_MAX) {
+       tmo = strtoul(value, &eptr, 0);
+       if (value == eptr) {
                condlog(0, "%s: Cannot parse dev_loss_tmo "
                        "attribute '%s'", rport_id, value);
                goto out;
-- 
2.17.2

--
dm-devel mailing list
dm-devel@redhat.com
https://www.redhat.com/mailman/listinfo/dm-devel

Reply via email to