diff options
Diffstat (limited to 'usr/src/uts/common/dtrace')
| -rw-r--r-- | usr/src/uts/common/dtrace/dtrace.c | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/usr/src/uts/common/dtrace/dtrace.c b/usr/src/uts/common/dtrace/dtrace.c index 290494147f..a5dd75f944 100644 --- a/usr/src/uts/common/dtrace/dtrace.c +++ b/usr/src/uts/common/dtrace/dtrace.c @@ -6120,6 +6120,23 @@ dtrace_probe(dtrace_id_t id, uintptr_t arg0, uintptr_t arg1, continue; } + /* + * Clear the string space, since there's no + * helper to do it for us. + */ + if (DTRACE_USTACK_STRSIZE(rec->dtrd_arg) != 0) { + int depth = DTRACE_USTACK_NFRAMES( + rec->dtrd_arg); + size_t strsize = DTRACE_USTACK_STRSIZE( + rec->dtrd_arg); + uint64_t *buf = (uint64_t *)(tomax + + valoffs); + void *strspace = &buf[depth + 1]; + + dtrace_bzero(strspace, + MIN(depth, strsize)); + } + DTRACE_CPUFLAG_SET(CPU_DTRACE_NOFAULT); dtrace_getupcstack((uint64_t *) (tomax + valoffs), |