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| author | Patrick Mooney <pmooney@pfmooney.com> | 2016-03-02 22:37:08 +0000 |
|---|---|---|
| committer | Patrick Mooney <pmooney@pfmooney.com> | 2016-03-02 23:59:18 +0000 |
| commit | 6a7a17065e9b79219d42a410443bee8f28ad1d93 (patch) | |
| tree | 68da90c72fa5365f253f5d9e95bd2dd0755f9f41 /usr/src/uts/common | |
| parent | bb1c698417dc9189c85dd69f6d0fbee19e9a2dde (diff) | |
| download | illumos-joyent-6a7a17065e9b79219d42a410443bee8f28ad1d93.tar.gz | |
OS-5204 lxbrand panic in br_issig_stop handler
Reviewed by: Jerry Jelinek <jerry.jelinek@joyent.com>
Diffstat (limited to 'usr/src/uts/common')
| -rw-r--r-- | usr/src/uts/common/brand/lx/os/lx_ptrace.c | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/usr/src/uts/common/brand/lx/os/lx_ptrace.c b/usr/src/uts/common/brand/lx/os/lx_ptrace.c index 2ec0abd0c1..0f521df61b 100644 --- a/usr/src/uts/common/brand/lx/os/lx_ptrace.c +++ b/usr/src/uts/common/brand/lx/os/lx_ptrace.c @@ -1611,6 +1611,17 @@ lx_ptrace_issig_stop(proc_t *p, klwp_t *lwp) VERIFY(MUTEX_HELD(&p->p_lock)); /* + * In very rare circumstances, a process which is almost completely + * through proc_exit() may incur issig checks in the current thread via + * clean-up actions. The process will still be branded, but the thread + * will have already been stripped of any LX-specific data on its way + * to the grave. Bail early if the brand data is missing. + */ + if (lwpd == NULL) { + return (0); + } + + /* * If we do not have an accord, bail out now. Additionally, if there * is no valid signal then we have no reason to stop. */ |