Fix panic when loading kernel modules before root file system is mounted.
Make sure the rootvnode is always NULL checked. Differential Revision: https://reviews.freebsd.org/D22545 PR: 241639 MFC after: 1 week Sponsored by: Mellanox Technologies
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=355108
@ -2079,14 +2079,16 @@ linker_load_module(const char *kldname, const char *modname,
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*/
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KASSERT(verinfo == NULL, ("linker_load_module: verinfo"
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" is not NULL"));
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if (rootvnode == NULL)
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return (ENXIO);
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pathname = linker_search_kld(kldname);
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} else {
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if (modlist_lookup2(modname, verinfo) != NULL)
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return (EEXIST);
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if (rootvnode == NULL)
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return (ENXIO);
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if (kldname != NULL)
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pathname = strdup(kldname, M_LINKER);
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else if (rootvnode == NULL)
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pathname = NULL;
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else
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/*
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* Need to find a KLD with required module
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