Mercurial > illumos > illumos-gate
changeset 13666:ab986bc53f59
2551 jstack may deal in stale ustack helper frames
Reviewed by: Joshua M. Clulow <josh@sysmgr.org>
Reviewed by: Adam Leventhal <ahl@delphix.com>
Approved by: Gordon Ross <gwr@nexenta.com>
| author | Richard Lowe <richlowe@richlowe.net> |
|---|---|
| date | Wed, 28 Mar 2012 05:42:57 +0100 |
| parents | d9114464c195 |
| children | 042db6341598 |
| files | usr/src/uts/common/dtrace/dtrace.c |
| diffstat | 1 files changed, 17 insertions(+), 0 deletions(-) [+] |
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--- a/usr/src/uts/common/dtrace/dtrace.c Wed Apr 04 21:58:47 2012 +0100 +++ b/usr/src/uts/common/dtrace/dtrace.c Wed Mar 28 05:42:57 2012 +0100 @@ -6107,6 +6107,23 @@ 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),