Use sbuf_new_for_sysctl() instead of plain sbuf_new() to ensure sysctl
string returned to userland is nulterminated. PR: 195668
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svn2git
2020-12-20 02:59:44 +00:00
svn path=/head/; revision=279999
@ -2830,7 +2830,7 @@ sysctl_kern_sched_topology_spec(SYSCTL_HANDLER_ARGS)
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KASSERT(cpu_top != NULL, ("cpu_top isn't initialized"));
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topo = sbuf_new(NULL, NULL, 500, SBUF_AUTOEXTEND);
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topo = sbuf_new_for_sysctl(NULL, NULL, 512, req);
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if (topo == NULL)
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return (ENOMEM);
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@ -2839,8 +2839,7 @@ sysctl_kern_sched_topology_spec(SYSCTL_HANDLER_ARGS)
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sbuf_printf(topo, "</groups>\n");
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if (err == 0) {
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sbuf_finish(topo);
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err = SYSCTL_OUT(req, sbuf_data(topo), sbuf_len(topo));
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err = sbuf_finish(topo);
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}
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sbuf_delete(topo);
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return (err);
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