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>
---
libmultipath/discovery.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/libmultipath/discovery.c b/libmultipath/discovery.c
index ffec5162..6a45979a 100644
--- a/libmultipath/discovery.c
+++ b/libmultipath/discovery.c
@@ -583,7 +583,8 @@ 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;
+ long long ll_tmo;
+ unsigned int tmo = 0;
int ret;
sprintf(rport_id, "rport-%d:%d-%d",
@@ -607,13 +608,13 @@ 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) {
+ ll_tmo = strtoll(value, &eptr, 0);
+ if (value == eptr || ll_tmo > UINT_MAX || ll_tmo < INT_MIN) {
condlog(0, "%s: Cannot parse dev_loss_tmo "
"attribute '%s'", rport_id, value);
goto out;
}
-
+ tmo = (unsigned int)ll_tmo;
/*
* This is tricky.
* dev_loss_tmo will be limited to 600 if fast_io_fail
--
2.17.2
--
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