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| author | markj <markj@FreeBSD.org> | 2016-10-02 01:18:34 +0000 |
|---|---|---|
| committer | markj <markj@FreeBSD.org> | 2016-10-02 01:18:34 +0000 |
| commit | d367a4b29c851b280bbda5f7dc46d14fd9dfe5a8 (patch) | |
| tree | 488bda4abad4224428425f9fa27a8480b4955578 /sys | |
| parent | 667eddb95879f196b969957103569ae77c4cd420 (diff) | |
| download | FreeBSD-src-d367a4b29c851b280bbda5f7dc46d14fd9dfe5a8.zip FreeBSD-src-d367a4b29c851b280bbda5f7dc46d14fd9dfe5a8.tar.gz | |
MFC r306220:
Re-check the systrace probe ID before calling dtrace_probe().
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/cddl/dev/systrace/systrace.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/cddl/dev/systrace/systrace.c b/sys/cddl/dev/systrace/systrace.c index 88e680a..014a007 100644 --- a/sys/cddl/dev/systrace/systrace.c +++ b/sys/cddl/dev/systrace/systrace.c @@ -193,7 +193,8 @@ systrace_probe(struct syscall_args *sa, enum systrace_probe_t type, int retval) memset(uargs, 0, sizeof(uargs)); if (type == SYSTRACE_ENTRY) { - id = sa->callp->sy_entry; + if ((id = sa->callp->sy_entry) == DTRACE_IDNONE) + return; if (sa->callp->sy_systrace_args_func != NULL) /* @@ -215,7 +216,8 @@ systrace_probe(struct syscall_args *sa, enum systrace_probe_t type, int retval) */ curthread->t_dtrace_systrace_args = uargs; } else { - id = sa->callp->sy_return; + if ((id = sa->callp->sy_return) == DTRACE_IDNONE) + return; curthread->t_dtrace_systrace_args = NULL; /* Set arg0 and arg1 as the return value of this syscall. */ |
