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ipv6: add net device refcount tracker to rt6_probe_deferred()

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Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Eric Dumazet 2021-12-04 20:22:04 -08:00 • committed by Jakub Kicinski
parent 9038c32000
commit fb67510ba9
1 changed files with 3 additions and 2 deletions
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5
net/ipv6/route.c
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@ -593,6 +593,7 @@ struct __rt6_probe_work {
struct work_struct work; struct work_struct work;
struct in6_addr target; struct in6_addr target;
struct net_device *dev; struct net_device *dev;
netdevice_tracker dev_tracker;
}; };
static void rt6_probe_deferred(struct work_struct *w) static void rt6_probe_deferred(struct work_struct *w)
@ -603,7 +604,7 @@ static void rt6_probe_deferred(struct work_struct *w)
addrconf_addr_solict_mult(&work->target, &mcaddr); addrconf_addr_solict_mult(&work->target, &mcaddr);
ndisc_send_ns(work->dev, &work->target, &mcaddr, NULL, 0); ndisc_send_ns(work->dev, &work->target, &mcaddr, NULL, 0);
dev_put(work->dev); dev_put_track(work->dev, &work->dev_tracker);
kfree(work); kfree(work);
} }
@ -657,7 +658,7 @@ static void rt6_probe(struct fib6_nh *fib6_nh)
} else { } else {
INIT_WORK(&work->work, rt6_probe_deferred); INIT_WORK(&work->work, rt6_probe_deferred);
work->target = *nh_gw; work->target = *nh_gw;
dev_hold(dev); dev_hold_track(dev, &work->dev_tracker, GFP_KERNEL);
work->dev = dev; work->dev = dev;
schedule_work(&work->work); schedule_work(&work->work);
} }