Author: delphij
Date: Mon Jun 15 18:16:23 2015
New Revision: 284418
URL: https://svnweb.freebsd.org/changeset/base/284418
Log:
MFC r283889,r283891:
Clear p_stops when doing PT_DETACH and PROCFS_CTL_DETACH.
Without this, if a process was being traced by truss(1), which
uses different p_stops bits than gdb(1), the latter would
misbehave because of the unexpected bits.
Reported by: jceel
Submitted by: sef
Sponsored by: iXsystems, Inc.
Modified:
stable/10/sys/fs/procfs/procfs_ctl.c
stable/10/sys/kern/sys_process.c
Directory Properties:
stable/10/ (props changed)
Modified: stable/10/sys/fs/procfs/procfs_ctl.c
==============================================================================
--- stable/10/sys/fs/procfs/procfs_ctl.c Mon Jun 15 15:34:20 2015
(r284417)
+++ stable/10/sys/fs/procfs/procfs_ctl.c Mon Jun 15 18:16:23 2015
(r284418)
@@ -235,6 +235,7 @@ out:
} else
PROC_LOCK(p);
p->p_oppid = 0;
+ p->p_stops = 0;
p->p_flag &= ~P_WAITED; /* XXX ? */
sx_xunlock(&proctree_lock);
Modified: stable/10/sys/kern/sys_process.c
==============================================================================
--- stable/10/sys/kern/sys_process.c Mon Jun 15 15:34:20 2015
(r284417)
+++ stable/10/sys/kern/sys_process.c Mon Jun 15 18:16:23 2015
(r284418)
@@ -963,6 +963,7 @@ kern_ptrace(struct thread *td, int req,
CTR1(KTR_PTRACE, "PT_DETACH: pid %d", p->p_pid);
p->p_oppid = 0;
p->p_flag &= ~(P_TRACED | P_WAITED | P_FOLLOWFORK);
+ p->p_stops = 0;
/* should we send SIGCHLD? */
/* childproc_continued(p); */
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