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-rw-r--r--sys/kern/imgact_elf.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/sys/kern/imgact_elf.c b/sys/kern/imgact_elf.c
index a8f3c6959b3b..5c4a9889a713 100644
--- a/sys/kern/imgact_elf.c
+++ b/sys/kern/imgact_elf.c
@@ -2303,13 +2303,16 @@ __elfN(note_prpsinfo)(void *arg, struct sbuf *sb, size_t *sizep)
sizeof(psinfo->pr_psargs), SBUF_FIXEDLEN);
error = proc_getargv(curthread, p, &sbarg);
PRELE(p);
- if (sbuf_finish(&sbarg) == 0)
- len = sbuf_len(&sbarg) - 1;
- else
+ if (sbuf_finish(&sbarg) == 0) {
+ len = sbuf_len(&sbarg);
+ if (len > 0)
+ len--;
+ } else {
len = sizeof(psinfo->pr_psargs) - 1;
+ }
sbuf_delete(&sbarg);
}
- if (error || len == 0)
+ if (error != 0 || len == 0 || (ssize_t)len == -1)
strlcpy(psinfo->pr_psargs, p->p_comm,
sizeof(psinfo->pr_psargs));
else {