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udev: do not read UdevEvent object before checking it is non-NULL

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This commit is contained in:
Yu Watanabe 2019-03-05 10:31:20 +09:00
parent 589384be8d
commit 6d0fdf4513
1 changed files with 3 additions and 1 deletions
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4
src/udev/udev-event.c
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@ -821,13 +821,15 @@ int udev_event_execute_rules(UdevEvent *event,
usec_t timeout_usec,
Hashmap *properties_list,
UdevRules *rules) {
sd_device *dev = event->dev;
const char *subsystem, *action;
sd_device *dev;
int r;
assert(event);
assert(rules);
dev = event->dev;
r = sd_device_get_subsystem(dev, &subsystem);
if (r < 0)
return log_device_error_errno(dev, r, "Failed to get subsystem: %m");