diff options
| -rw-r--r-- | usr/src/uts/common/dtrace/fasttrap.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/usr/src/uts/common/dtrace/fasttrap.c b/usr/src/uts/common/dtrace/fasttrap.c index fc3d87574a..2dc2620535 100644 --- a/usr/src/uts/common/dtrace/fasttrap.c +++ b/usr/src/uts/common/dtrace/fasttrap.c @@ -25,7 +25,7 @@ */ /* - * Copyright (c) 2013, Joyent, Inc. All rights reserved. + * Copyright (c) 2015, Joyent, Inc. All rights reserved. */ #include <sys/atomic.h> @@ -928,6 +928,17 @@ fasttrap_pid_enable(void *arg, dtrace_id_t id, void *parg) mutex_enter(&pidlock); p = prfind(probe->ftp_pid); + if (p == NULL) { + /* + * So it's not that the target process is being born, + * it's that it isn't there at all (and we simply + * happen to be forking). Anyway, we know that the + * target is definitely gone, so bail out. + */ + mutex_exit(&pidlock); + return (0); + } + /* * Confirm that curproc is indeed forking the process in which * we're trying to enable probes. |