Take a reference to make sure that the interface cannot go away during
if_clone_destroy() in case parallel threads try to. PR: kern/116837 Submitted by: Mikolaj Golub (to.my.trociny gmail.com) MFC after: 10 days
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=206488
@ -196,10 +196,11 @@ if_clone_createif(struct if_clone *ifc, char *name, size_t len, caddr_t params)
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int
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if_clone_destroy(const char *name)
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{
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int err;
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struct if_clone *ifc;
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struct ifnet *ifp;
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ifp = ifunit(name);
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ifp = ifunit_ref(name);
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if (ifp == NULL)
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return (ENXIO);
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@ -221,10 +222,14 @@ if_clone_destroy(const char *name)
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}
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#endif
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IF_CLONERS_UNLOCK();
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if (ifc == NULL)
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if (ifc == NULL) {
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if_rele(ifp);
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return (EINVAL);
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}
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return (if_clone_destroyif(ifc, ifp));
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err = if_clone_destroyif(ifc, ifp);
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if_rele(ifp);
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return err;
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}
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/*
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