diff options
Diffstat (limited to 'freebsd/sys/kern/subr_sleepqueue.c')
| -rw-r--r-- | freebsd/sys/kern/subr_sleepqueue.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/freebsd/sys/kern/subr_sleepqueue.c b/freebsd/sys/kern/subr_sleepqueue.c index e8e221c8..99a9d67f 100644 --- a/freebsd/sys/kern/subr_sleepqueue.c +++ b/freebsd/sys/kern/subr_sleepqueue.c @@ -590,6 +590,19 @@ sleepq_catch_signals(void *wchan, int pri) } else { mtx_unlock(&ps->ps_mtx); } + + /* + * Do not go into sleep if this thread was the + * ptrace(2) attach leader. cursig() consumed + * SIGSTOP from PT_ATTACH, but we usually act + * on the signal by interrupting sleep, and + * should do that here as well. + */ + if ((td->td_dbgflags & TDB_FSTP) != 0) { + if (ret == 0) + ret = EINTR; + td->td_dbgflags &= ~TDB_FSTP; + } } /* * Lock the per-process spinlock prior to dropping the PROC_LOCK |